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The silicon-based cleaning waste sulfuric acid with hydrogen peroxide and steel acid cleaning waste liquid with large amount of ferrous ions and partial free hydrochloric acid are used as raw materials. Then an appropriate dosage of iron oxide powder was employed.A new economical and efficient composite water treatment macromolecular flocculant polyferric sulfate（PFCS） was synthesized. The structure and composition of PFCS were studied by FTIR, XRD and XPS. The paper waste water containing 279.9 mg/L CODCr and 4.1 mg/L total phosphorus was treated by the product. When the additive amount was 800 mg/L, the removal rate of CODCr was 71.49% and the removal rate of total phosphorus was 99.02%. [ABSTRACT FROM AUTHOR]

This paper introduces the conventional treatment methods of agriculture wastewater, including chemical methods and biological methods. These methods have problems of low efficiency, secondary pollution and high cost. Based on the significant advantages of microalgae purification of wastewater that can achieve pollutant removal and wastewater resource utilization, the current research status of microalgae purification of agriculture wastewater is described, and the problems of microalgae purification of agriculture wastewater are presented with respect to the current research. In view of these problems, suggestions are given to solve the problems of microalgae purification of agriculture wastewater, which provide a reference for the future use of microalgae to purify agriculture wastewater. [ABSTRACT FROM AUTHOR]

To comprehend the newest research progress, hotspots, and development trends concerning coal fly ash’s role in environmental remediation, this paper objectively reflects scientific contributions and influences from related countries（regions）,institutions, and individuals. An econometric analysis of the relevant literature included in the Web of ScienceTM core collection database of ISI Web of Knowledge from 1990～2022 was conducted. Specifically, the TOP10 countries（regions） were considered in terms of publication numbers, high-yield authors, source journals, important research institutions, as well as research hotspots to evaluate the current state of coal fly ash application and research in the field of environmental remediation since 1990. This paper serves as a guide to understand the research direction, development trend, and research hotspots of coal fly ash in the field of environmental remediation. [ABSTRACT FROM AUTHOR]

Aiming at the source of farmland backwater and the characteristics of farmland retreat water pollution, this paper summarizes the domestic and international source control measures and ecological purification technology that can be used to treat farmland retreat water. After years of development and application, source control measures can reduce the amount of receding water and receding water pollution load at the source, which is a key strategy to control retreat water・ Ecological treatment technology has become the best retreat water treatment method available in rural areas because of its ecological benefits, construction costs and other advantages・ This paper summarizes the existing non-point pollution treatment modes, and provides a kind of ecological retention and purification of farmland retreat water treatment ide-血, and finally looks forward to the future development direction of farmland receding water treatment technology and provides reference for the future management of farmland retreat water. [ABSTRACT FROM AUTHOR]

This paper first summarizes the source, distribution and harm to human body of microplastics in the water environment・ Primary and secondary micro plastics can enter the drinking water through surface runoff and sewage plant effluent, which can be absorbed by human body and cause a variety of toxic effects. Then, the treatment principle, removal effect, advantages and disadvantages of new technologies such as membrane technology, magnetic separation, electrocoagulation, photocatalytic degradation and biodegradation were discussed, focusing on the research progress and effectiveness of new technologies・ Finally, the prospect of experimental research and subsequent disposal is put forward・ This paper summarizes the research progress of microplastics removal technology in water environment, in order to provide reference for further reducing energy consumption, improving the removal rate of microplastics in water environment and forming a stable process in the future. [ABSTRACT FROM AUTHOR]

This paper systematically summarizes the ecological restoration efficiency of different aquatic plants on slightly polluted water bodies, such as rivers・ Explain the purification mechanism of aquatic plant restoration water body and analyze the influencing factors (temperature, transparency, pollutant concentration) and the interaction mechanism of aquatic plants in the purification process・ The results showed that the pollutant removal rate of Hg, Fe, Cu and Zn were 32. 6% 〜39・ 7%, 44・ 9% ~ 51 ・ 4%, 63・ 7% ~ 70. 5%, 74・7% ~79・4%, respectively. The removal rate of Co, Ni, Cu, and Zn were 44. 7% 〜45. 3%, 55. 7% ~ 59・ 3%, 64・ 8% ~69・ 4%, and 61.3% 〜65. 4%, respectively. This paper can provide a theoretical basis for the preferred work of aquatic plants in ecological restoration projects. [ABSTRACT FROM AUTHOR]

This paper first describes the key problems that limit the development of metal-halide coordination polymer(XCP) materials, such as poor thermal stability, moisture resistance, heavy metal exudation and so on. Then it is mentioned that the halogen coordination atom is introduced into the traditional coordination polymer・ This strategy can not only effectively improve the light absorption capacity of the material, but also stabilize the excited electrons, which is of great significance to enhance the photocatalytic performance of the materiaL This paper further reviews the research on the photocatalytic degradation of organic pollutants, selective organic synthesis, hydrogen production from water cracking and CO2 reduction of halogenated metal coordination polymer materials, and prospects the application of such materials in the field of photocatalysis・ In order to construct long-term stable XCP to achieve efficient photocatalysis, to provide theoretical reference for expanding the application scale and exploring the structure-activity relationship between structure and performance. [ABSTRACT FROM AUTHOR]

This paper introduces the classification - selection and packaging carrier of phase change materials, and expounds the application progress of porous phase change materials in heating field. The application research shows that the application of phase change materials in building envelope can stabilize room temperature fluctuation, reduce heating load and reduce energy consumption. Combining phase change materials with heating devices can effectively improve heating efficiency, reduce heat loss and reduce carbon emissions. The combination of passive thermal storage and active heating system has better heating effect, and the optimal combination of them has important research significance and application prospect. [ABSTRACT FROM AUTHOR]

The research progress of MXenes/polysaccharide composites in water treatment in recent five years was summarized・ The preparation method of MXene and the main types of MXenes/polysaccharide composites in water treatment were introduced・ The applications of MXenes/polysaccharide composites in water purification, water oil separation and seawater desalination were discussed・ The development prospects and challenges of MXene/polysaccharide composites were prospected・ The research in this paper has reference value for further design of MXene/polysaccharide composites with high efficiency water treatment. [ABSTRACT FROM AUTHOR]

This paper summarizes the utilization status of low-rank coal and biomass resources in China, expounds the synergistic effect mechanism of coal and biomass co-pyrolysis, systematically summarizes the effects of heating rate, pyrolysis temperature, biomass type, mixing ratio, reactor type, carrier gas flow rate and pyrolysis atmosphere on the synergistic effect in the process of coal and biomass co-pyrolysis, and analyzes and looks forward to the development direction and research direction of coal and biomass co-pyrolysis technolog y・ The co-pyrolysis of coal and biomass can combine the advantages of pyrolysis alone and exert a synergistic effect in the pyrolysis process to improve the yield and quality of pyrolysis products・ It can also alleviate the problems of low■:rank coal and biomass burning in large quantities polluting the environment and low energy utilization. Therefore, many scholars at home and abroad have explored the synergistic effect mechanism of co-pyrolysis and the influence of different factors on the synergistic effect from different angles and methods, so as to help the clean utilization of low-rank coal and the efficient utilization of biomass resources. [ABSTRACT FROM AUTHOR]

This research is carried out by the current status of soil chlorinated hydrocarbon pollution in China and the limitations of applying biochar for soil remediation・ In light of the practical problems that the properties of biochar are lini让ed by functional groups, the number of adsorption sites and the long-term efficacy in the practical remediation application is poor, this paper systematically reviews the different modification methods and how these methods enhance properties of biochar・ The characteristics of biocharbased materials immobilized microorganisms have been analyzed・ Furthermore, in order to provide new thoughts for biochar as a remediation material into soil chlorinated hydrocarbons contamination, a detailed investigation into the mechanism and efficiency of acid-alkali modified biochar, metals modified biochar and biochar-based materials immobilized microorganisms on the removal of chlorinated hydrocarbons has been provided. [ABSTRACT FROM AUTHOR]

The kinds of solid waste as aggregates, cementitious materials and fibers mixed with concrete to make renewable and recyclable green building materials, which will be a way to obtain the greatest environmental and economic benefits through 3D concrete printing technology・ This paper discusses the effects of various types of solid waste and recycled materials on the printability, rheological properties, extrusibility, constructability, mechanical anisotropy and durability of 3D printed environmentally friendly concrete. [ABSTRACT FROM AUTHOR]

This paper mainly reviews the oxidoreductases(cytochrome P450, laccase and peroxidase) and hydrolases (lipase, cellulase, esterase and haloalkane dehalogenase) in bioremediation・ OxidoreductasES use NADP or NAD+ as coenzymes to transfer electrons, and the energy generated in these enzyme-mediated biochemical reactions degrade dyes, polycyclic aromatic hydrocarbons or pesticides; hydrolases convert toxic pollutants into non-toxic compounds by breaking chemical bonds such as ester bonds, peptide bonds and carbon-halogen bonds・ The methods to improve the effect of enzyme bioremediation, such as adding surface activity, enzyme immobilization and genetic engineering, were summarized・ The problems existing in the production and practical application of enzymes and the future development trend were analyzed. [ABSTRACT FROM AUTHOR]

This paper systematically reviews the research status of perovskite in the field of mercury removal from flue gas, compares the diflerences of perovskite mercury removal before and after regulation, summarizes the application achievements of A・ position, B-position regulation and AB position co-regulation of perovskite mercury removal, discusses the influence of active sites, oxidation species and reaction parameters on mercury removal performance, and summarizes the corresponding mercury removal paths and reaction mechanisms of different types of perovskite, compares and analyzes the advantages and disadvantages of three mercury removal technologies・ It is proposed that the continuous development of regulated perovsk让e is a feasible strategy to get rid of the dependence of mercury removal on HC1 and overcome the shortcomings of poor sulfur resistance and water resistance of mercury removal materials. [ABSTRACT FROM AUTHOR]

The research progress on simulation and optimization of pressure swing adsorption purification technology for low concentration coal is reviewed. The adsorbent and pressure swing adsorption process are briefly and clearly introduced. From the perspective of the development trend of adsorbents, simulation and optimization can improve the performance of adsorbents and the ratio of raw materials, and improve the effectiveness of adsorbents. From the perspective of the development trend of pressure swing adsorption, simulation and optimization of pressure swing adsorption equipment can make its automation effect better and economic benefit higher. This paper summarizes and points out that simulation and optimization play an important role in this technology from both perspectives, which improves the efficiency and productivity. While bringing a lot of convenience to the technology, there are also areas for further improvement from both perspectives. From the perspective of adsorbent, the simulation and optimization of multicomponent mixtures still need to be improved; from the perspective of pressure swing adsorption, there are still limitations in the dynamic change simulation in the actual operation, and the safety optimization in the operation of the device should be considered more. [ABSTRACT FROM AUTHOR]

This paper mainly introduced the principle of mechanical activation, the application of mechanical activation in slow-release fertilizer, effect factors of mechanical activation on the characteristics of fertilizer, and the green evaluation methods of mechanical activation were reviewed.And the future research direction of mechanical activation was prospected, in order to provide reference for the realization of green production and efficient application of mechanical activation in fertilizer. [ABSTRACT FROM AUTHOR]

This paper summarizes the research progress of carbon and iron based conductive materials promoting methanogenesis of DIET in recent years was reviewed. The mechanism of direct interspecific electron transfer was summarized, and the structural characteristics, electron transfer mechanism and effect of enhancing anaerobic methanogenesis of waste activated sludge were summarized. The shortcomings of the current research are pointed out, and the future research direction is prospected. [ABSTRACT FROM AUTHOR]

This paper summarizes the research progress of sludge resource utilization technology, analyzes the mechanism of different pretreatment processes on the dissolution of sludge substances and the dissolution effect, and compares the advantages and shortcomings of different pretreatment methods; summarizes the resource recycling and utilization pathways such as protein recovery, alginate recovery and anaerobic fermentation after sludge pretreatment; and provides suggestions and perspectives on the engineering application of sludge pretreatment and resource utilization. The recommendations and prospects for the engineering application of sludge pretreatment and resource utilization are also provided. [ABSTRACT FROM AUTHOR]

This paper reviews the development status of graft copolymers and the research progress of humic acid copolymers. Humic acid has a variety of oxygen-containing functional groups, such as carboxyl group, phenol hydroxyl group and other groups, and humic acid molecules have the abilities of redox, hydrophilic, complex, adsorption, dispersion and easy graft copolymerization modification. Humic acid copolymers were introduced from different uses. Because of their low cost, green and safe characteristics, they have broad application prospects in industry, agriculture, animal husbandry and medicine. [ABSTRACT FROM AUTHOR]

This paper discusses that wear, corrosion, fracture and other damages often occur in the use of composite materials, resulting in microcracks on the surface or inside, shortening the service life of materials and even causing equipment failure・ Scholars have incorporated self-healing microcapsules into cement building materials, metal protective coatings, asphalt modification, glass fiber and other composite materials, so that their service cycle, self-healing ability, thermal stability and mechanical properties have been greatly improved・ This paper summarizes and evaluates the preparation methods and mechanism of cement building materials, metal protective coatings, asphalt modified and glass fiber microcapsule composites, and compares the types, performance characteristics and research directions of different microcapsule composites. The paper pointed out the problems to be solved in low temperature resistance, compounding and healing speed of microcapsule composites, in order to provide reference value for related future research ・ [ABSTRACT FROM AUTHOR]

This paper mainly reviewed the influences of process parameters including the selection of precursors, particle size of raw materials, pyrolysis method, pyrolysis temperature, heating rate, residence time and pyrolysis pressure during the process of biochar pyrolysis preparation・ Various modification methods have been employed to modify the surface structure, functional groups and the quantity and morphological structure of biochar to improve its structural stability, high efficiency of adsorption as well as reusability, with a view to using biochar to solve pollution problems of various pollutants in wastewater environment. This paper analyzes the problems and deficiencies of biochar still in the preparation process・ Currently, as an adsorption material, the adsorption performance of biochar needs to be improved in the direction of sewage treatment, soil remediation and gas purification. It also provides scientific basis and theoretical basis for future research directions such as optimization of preparation process, reasonable selection of modification methods, interaction of various factors in the process of use, cost estimation and recyclability・ [ABSTRACT FROM AUTHOR]

This paper reviews the synthesis methods and basic properties of high temperature resistant natural modified AMPS filtrate reducer, high temperature resistant zwitterionic AMPS filtrate reducer and high temperature resistant rigidized modified AMPS filtrate reducer. And introduces the introduction of silicon, starch and graphene into natural modified AMPS filtrate reducer to improve salt and calcium resistance, the addition of cationic groups to ionic AMPS filtrate reducer to enhance electrostatic adsorption capacity and the introduction of rigid groups to rigidized modified AMPS filtrate reducer to increase molecular rigidity ・ This paper also evaluates the research directions of natural modified AMPS fluid loss additive, amphoteric AMPS fluid loss additive and rigidified AMPS fluid loss additive, with a view to providing a good reference for the development of new natural modified materials, the development of synthetic materials with multiple properties, and the introduction of other rigid groups with a ring structure. [ABSTRACT FROM AUTHOR]

Combining with the domestic and international research progress, this paper systematically elaborated the formation mechanism and dynamic change of humic acid during composting, and the influence mechanisms of composting technology on the yield and structural characteristics of humic acid. In order to provide a scientific reference for improving the humic efficiency of agricultural solid waste, this paper analyzed the composting humic process and the driving mechanism of composting technology. This review is of great significance to optimize agricultural composting technology and strengthen the practical application of humic acids, and promote the sustainable development of agriculture and soil. [ABSTRACT FROM AUTHOR]

This paper summarizes the research progress of multiphase catalysts in the organic wastewater treatment process CSCWO, including discussing the characteristics of refractory organic wastewater and the limitations of traditional treatment methods, introducing the principles and advantages of SCWO and CSCWO, reviewing the types, performance, synthesis methods and influencing factors of multiphase catalysts in CSCWO, and looking forward to the development prospects of CSCWO technology in the futurE. Developing new and efficient catalysts, especially metal oxide catalysts and non-noble metal catalysts, is of great significance for promoting the wide application of CSCWO technology・ At the same time, it is also necessary to optimize the synthesis process and parameters of multiphase catalysts, reveal the reaction mechanism and dynamic changes of multiphase catalysts in CSCWO, and provide guidance for the design of catalysts. [ABSTRACT FROM AUTHOR]

This paper introduces the structure of g-C3N4 nanotubes, three formation methods of C3N4 nanotubes, template method, supramolecular precursor assemblies and nano-/microsheet scrolling・ Based on the latest research results obtained by domestic and foreign researchers in g-C3 N4 nano tubes, the research on photocatalytic production of H2, degradation of pollutant, reduction of C02, formation of H202 and sensor from g-C3N4 nanotube composite are presented・ At present, the materials compounded with g-C3N4 nanotubes are limited to single atoms or small molecules, in order to enhance the application of g-C3N4 nanotubes, the researchers should try the study of g-C3 N4 nanotubes and polymer composite based on the existing nanotube and polymer composite data・ The future opportunities and challenges of C3N4 nanotube materials are presented. [ABSTRACT FROM AUTHOR]

This paper summarized the research progress and application characteristics of foam fluid in fracturing and EOR, and proposed that foam fluid still has problems such as insufficient stability in the formation environments, limited EOR improvement, and reservoir damage・ The colloidal gas aphron(CGA) fluids, analyzed and demonstrated that CGA, as a fracturing fluid and displacement fluid, has good application prospects in EOR, and puts forward prospects for its future research. [ABSTRACT FROM AUTHOR]

The synthesis methods of magnetic-gold nanoparticles and their application in biomedical diagnosis and treatment in recent years are reviewed・ This paper summarizes the preparation method of magnetic nanoparticles, the synthesis method of magnetic-gold nanoparticles, the application of magnetic nanoparticles as imaging contrast agent in biomedical multimodal imaging and u background-free, imaging, and the application of magnetic-gold nanoparticles as an integrated probe in biomedical diagnosis and treatment. Finally, the future development direction and application prospect of magnetic-gold nanoparticles are discussed. [ABSTRACT FROM AUTHOR]

This study outlines the characteristics of microbial aerosol emissions from bioreactors, analyzes the mechanism of microbial aerosol generation, and the effects of several factors, such as microbial growth conditions, gas composition, and gas flow rate and inlet loading, on bioaerosol emissions・ In addition, exposure risks in microbial aerosol environments and different control measures are presented as potential solutions to reduce microbial aerosol emissions・ The aim of this paper is to make more people aware of the importance of controlling microbial aerosol emissions and to make biotechnology treatment of VOCs more environmentally friendly. [ABSTRACT FROM AUTHOR]

This paper focuses on the physical and chemical properties of calcium sulfate whiskers and the modification mechanism of asphalt. The research results of surface modification, preparation process and properties of calcium sulfate whiskers are sorted out. The existing problems and future research directions of calcium sulfate whisker modified asphalt are put forward・ It is pointed out that the future research should focus on the preparation process of calcium sulfete whiskers and the research on the flexibility and toughening of composite materials・ Finally, by analyzing the application advantages of calcium sulfate whisker modified asphalt prepared by phosphogypsum, it has broad application prospects for promoting the high value-added utilization of phosphorus solid waste. [ABSTRACT FROM AUTHOR]

The characteristics of potassium ferrate and its application in water treatment are reviewed, and the advantages and disadvantages of potassium ferrate in water treatment are analyzed・ This paper focuses on overcoming the shortcomings of single application of potassium ferrate and the research progress of combining potassium ferrate with other technologies・ The degradation principle of various combined technologies of potassium ferrate for pollutants in water was analyzed, and the research reports of pollutants in water at home and abroad were systematically reviewed, finally, the development of potassium ferrate combined technology in the future water environmental treatment is prospected. [ABSTRACT FROM AUTHOR]

The paper analyzes the emission characteristics of industrial air pollutants in Chongqing from 2000 to 2021 using atmospheric pollutant emission data, the LMDI model was used to analyze the main fluencing factors of industrial S02 emissions in Chongqing, based on the grey GM(1,1) model, the chan・ ges in industrial SO2 emissions in Chongqing from 2022 to 2030 were predicted・ The results showed that the emission of industrial SO2 in Chongqing decreased from 664 200 t to 41 700 t, a decrease of 93.7% from 2000 to 2021, the scale of economic development(AG) always has a positive driving effect on SO2 emissions, while industrial structure(AS) and energy consumption intensity(Af) and SO2 emission inten・ sity(AZ) mainly inhibits SO2 emissions・ The industrial SO2 emissions in Chongqing will be reduced to 15 600 t in 2025 and will continue to decrease to 4 700 t by 2030. [ABSTRACT FROM AUTHOR]

The paper took the Yuelai eco-city in Yubei district of Chongqing as the study area, selected and collected soil samples from existing typical sponge facilities, extracted TWP by density separation method, analyzed TWP in different types of sponge facilities qualitatively and quantitatively after extraction, and analyzed the "sink" and "source" of TWP in sponge facilities for this experiment. The "sink" and u sourceanalysis of TWP in sponge facilities was conducted to assess the ecological release risk of TWP in different sponge facilities・ The result showed that the sampling points of each sponge facility were currently at low risk level・ The ecological risk indexed from high to low is parking lot > rainwater catchment point > sewer inlet > bioretention zone > rain garden・ The ecological risk index of the parking lot was 31, and the ecological risk index of the sewer inlet, bioretention zone and rain garden were all less than 10. [ABSTRACT FROM AUTHOR]

This paper introduced the main influencing factors of sludge dewatering performance and sludge conditioning technologies, and reviewed the research progress of biochar for sludge conditioning, including the characteristics of biochar, modification methods, combined conditioning methods and the mechanisms of improving sludge dewaterability・ The prospect of biochar conditioning technology was presented, and it was suggested that in-depth studies about biochar modification and joint conditioning methods could be developed for providing references for the theoretical research and engineering applications of biochar in sludge conditioning. [ABSTRACT FROM AUTHOR]

This paper reviews some modification methods of biochar, including magnetic modification, heteroatom doping modification, ball milling modification, acid-base modification, and focuses on the application of these modified biochar in the adsorption of antibiotics. Biochar, as an efficient and low-cost adsorbent, has the potential to adsorb antibiotics because of the increasing environmental impact of antibiotics in wastewater. The removal mechanism of antibiotics from wastewater by modified biochar was also analyzed, including electrostatic interaction, H bond, 济interaction, and surface complexation. Some short・ comings of modified biochar were summarized and the corresponding prospects for future work were put forward, so that modified biochar could be better used in the treatment of antibiotics in wastewater and play a greater role in environmental remediation. [ABSTRACT FROM AUTHOR]

The changes of physicochemical properties of sludge during thermal drying were first described・ Macromolecular organics in sludge were decomposed into micromolecule organics, and the forms of acidsoluble, oxidizable and reducible heavy metals were transformed into stable residue, which reduced the environmental risk of sludge disposal・ Then, the problems and causes of in thermal drying process of sludge were analyzed・ Aiming at the problem of sludge vicosity, the methods of dry sludge back mixing, adding viscosity reducing substances and reforming drying equipment were summarized ・ In view of the pollution gas problem, this paper summarized the methods of adding add让ives and the reduction of temperature to inhibit the release of polluted gas, and the pollution gas was treated by absorption, adsorption and biological methods. In view of the equipment corrosion, the main measures of using anti-corrosion pipes, anti-corrosion coatings, adding corrosion inhib让ors and reducing the sand content of sludge were summarized・ Finally, the suggestions on research trend and development of sludge thermal drying technology were proposed. [ABSTRACT FROM AUTHOR]

This paper first introduces the algal-bacteria symbiosis mainly from the relationship between bacteria and algae・ Then, the mechanism of treatment of heavy metal wastewater by algal-bacteria symbiosis was described, mainly through the adsorption of heavy metal attached to the cell wall surface, and then transported heavy metal into the cell for biological enrichment, and the formation of complex between extracellular polymer and heavy metal to remove heavy metal ・ Finally, the present situation of treatment of livestock and poultry wastewater, mine wastewater and textile wastewater by algal symbiosis is reviewed ・ The advantages and existing problems of the treatment of heavy metal wastewater by algal-bacteria symbiosis are summarized, and the development prospect is prospected. [ABSTRACT FROM AUTHOR]

This paper summarizes the research status of the influence of different support properties on carbonyl sulfur hydrolysis catalysts and the influence of carrier pore structure on carbonyl sulfur hydrolysis conversion. The catalytic mechanism of carbonyl sulfur hydrolysis were discussed・ The mechanism of oxygen poisoning, sulfur poisoning and chlorine poisoning of hydrolytic catalyst was emphatically introduced・ On this basis, the future research direction of carbonyl sulfur hydrolysis catalyst was prospected, which provided theoretical support for the subsequent development of high efficiency hydrolysis catalyst. [ABSTRACT FROM AUTHOR]

This paper investigates the mechanism of foaming water on asphalt adhesion and cohesion using a combination of macro and microscopic methods such as molecular dynamics simulations, water boiling tests, surface free energy tests and pull-out tests. The results show that water molecules repel asphalt molecules on the molecular scale-thus weakening the interfacial energy between asphalt; on the macroscopic scale, it is found that the anti-boiling spalling of foam asphalt and aggregate is reduced, the foaming water is detrimental to the adhesion and cohesion of asphalt, and the more foaming water there is, the more obvious the damage to the adhesion and cohesion of asphalt. The interfacial energy of foam asphalt is highly correlated with its cohesive and adhesive properties, and the multi-scale effects of foaming water on the cohesive/adhesive properties of foam asphalt can be explained at macroscopic and microscopic molecular scales. [ABSTRACT FROM AUTHOR]

This paper reviews the characteristics of membrane distillation technology and the current research progress and hot issues, and compares the latest research progress of membrane distillation technology in terms of membrane material characteristics, membrane wetting and pollution, membrane material modification, research and application in oil and gas field produced water, etc. Membrane distillation technology was found to have great potential for the treatment of oilfield talent effluent, and the energy consumption limitation of membrane distillation technology can be improved by using low-grade thermal energy and coupling other processes. The improvement of membrane materials to obtain high flux and pollution resistant hydrophobic membranes is the key to achieve industrial application of membrane distillation technology. [ABSTRACT FROM AUTHOR]

This paper introduces the characteristics of lightweight aggregate concrete, analyzes the design method of lightweight aggregate mix ratio, summarizes the research progress of different lightweight aggregate concrete properties affected by various factors at home and abroad in recent years, explores the microscopic representation of lightweight aggregate concrete, points out the existing defects of lightweight aggregate concrete such as poor workability, easy to block pumpability, and gives reasonable suggestions. The future development direction and application prospect of lightweight aggregate concrete are prospected. [ABSTRACT FROM AUTHOR]

This paper reviews the development of research on one-dimensional self-assembly of gold nano-particles. The experimental strategies to realize 1D self-assembly of gold nanoparticles are first introduced; the applications of gold self-assembled 1D nanomaterials in colorimetric sensing, Raman enhancement, electronic devices and biomedicine are then summarized; remarks on future directions of this research topic are presented. [ABSTRACT FROM AUTHOR]

This paper comprehensively discusses the pathways of heavy metals into the plant root epidermis, the short-range transport pathway through the horizontal transport of coplanar and plasmodesmata, and the long-range transport pathway through the xylem and phloem for loading and unloading. The transport of heavy metal ions by the coplanar pathway is slow, while the transport of heavy metal ions by the extra plastid pathway has low resistance to migration and high rate. Cell wall adsorption and resolution are en-dogenous factors affecting the transport of heavy metal ions into the root xylem via the cytoplasmic ectodomain pathway, but the development of the Casparian strip and suberin in the root cortex, which constitute the ectodomain barrier, can block the ectodomain pathway of heavy metal ion migration to the xylem. Plant transpiration and root pressure provide the driving force for the long-distance transport of heavy metal ions in the xylem and are related to the transpiration rate of plants. The mechanism of plant detoxification and tolerance to heavy metals is mainly induced by the production of metallothionein, the formation of phytoch-elating pep tides (PCs) in stressed plants and the regionalization of heavy metals by vesicles. [ABSTRACT FROM AUTHOR]

This paper mainly focuses on the classification of PPCPs in water bodies, their sources and their hazards, and focuses on the treatment technology of PPCPs in wastewater at home and abroad, comparing the advantages and disadvantages of each treatment technology and the current status of its application, with a view to discovering highly efficient measures for the treatment of PPCPs in wastewater, and providing reference for the development of wastewater treatment technology of PPCPs. [ABSTRACT FROM AUTHOR]

The research status of functional particle plugging control systems such as pre crosslinking, slow expansion, core-shell microsphere and environmental stimulation response are reviewed. The particle plugging control system can overcome the shortcomings of conventional gel plugging agent, such as high initial viscosity, not easy to pump, uncontrollable gel forming time and dilution of formation water, it has been developed actively in recent years. This paper analyzes the influence of preparation method, composition, application environmental conditions, etc. of particle system on particle physical properties and swelling performance, discusses the mechanism of particle system in reservoir from aspects of molecular structure of particles, interaction between particles and dynamic migration behavior, and finally summarizes and prospects the research and application of particle plugging control system, to provide technical and theoretical support for improving oil recovery through water drive development in the middle and later stages of oil reservoirs. [ABSTRACT FROM AUTHOR]

This paper summarized and analyzed the scope of carbon emission accounting in industrial parks and the decoupling relationship between carbon emission and economic development in industrial parks based on one-dimensional or two-dimensional decoupling models, and discussed the influence of various factors on the decoupling relationship in the decoupling effect model based on LMDI decomposition method and Tapio decoupling model, with a view to providing reference for carbon emission inventory establishment, decoupling degree analysis, driver identification and comprehensive assessment. On this basis, it is suggested that industrial parks should formulate a carbon emission inventory reasonably, consider carbon emission drivers in multiple dimensions and build a more comprehensive indicator system. [ABSTRACT FROM AUTHOR]

Based on the research of bismuth based photo catalyst in recent years, this paper summarized the main preparation methods of several bismuth based composite oxides (BiVO4, Bi2WO6, Bi2MoO6, CuBi2O4 and BiFeO3), such as precipitation method, solid phase sintering method, hydrothermal method, sol gel method, etc., and introduced the common modification methods such as precious metal deposition, morphology control, ion doping and heterojunction construction. The modified bismuth based composite oxide photo catalyst shows better photocatalytic activity due to the expansion of the visible light range and the increase of the electron mobility, which can play a more effective role in the environmental protection fields such as the treatment of harmful waste gas, new poutines, dye wastewater and photocatalytic antibacterial. This paper provides a reference for the development and utilization of bismuth based composite oxide photo catalyst in the field of environmental protection. [ABSTRACT FROM AUTHOR]

Focusing on the form and release characteristics of phosphorus in the surplus sludge, this paper expounds the influence of biological phosphorus removal process and chemical synergistic phosphorus removal method on the difference of phosphorus form, analyzes the phosphorus release and transformation mechanism in the two key stages of hydrolysis and acidification of the surplus sludge, and clarifies that the factors such as hydrolase, acid producing bacteria, temperature and additional carbon source mainly improve the acid fermentation efficiency by affecting the enzyme activity, microbial metabolic activity and growth rate, thereby improving the release rate and conversion efficiency of phosphorus. By summing up, the paper points out the existing disputes in the research and looks forward to the future development direction. [ABSTRACT FROM AUTHOR]

The evaluation status of sludge residue was analyzed, and the content of main pollutants in the residue was analyzed. Based on the content of main pollutants, from two aspects of physical and chemical indicators and biological toxicity of sludge at home and abroad are reviewed in this paper residue ecological safety evaluation methods, and compare the two, summarizes the advantages and disadvantages of evaluation methods and the scope of application, points out: the residue of the single evaluation has certain limitations, make full use of the residue after processing the basic physical and chemical properties, combined with the group biological toxicity tests, can in order to establish safety evaluation system containing sludge pyrolysis residue. [ABSTRACT FROM AUTHOR]

This paper summarizes morphological characteristics and physicochemical properties of MSN, and expounds the various characteristics of MSN, such as ultra-high specific surface area and controllable pore size, special mesoporous structure, ultra-high adsorption capacity, targeted delivery and intelligent response in controlling and releasing substance, stable dispersion on the high-temperature and high-salt condition. Besides, this paper summarizes the two applications of MSN in EOR, including stabilizing Pickering emulsion and intelligent controlling/releasing surfactant. It also pointed out that the application of MSN in biomedicine are enlightening, aiming to provide a reference for the practical application of MSN in the EOR. [ABSTRACT FROM AUTHOR]

This paper summarizes the background of hydrogen fuel cell power generation technology, dis- cusses that the sources of hydrogen in hydrogen fuel cell include coal to hydrogen, natural gas to hydrogen, industrial by-product hydrogen and electrolytic water to hydrogen, and investigates the current application direction of hydrogen fuel cell, and analyzes the advantages, characteristics and application status of hydrogen fuel cell power generation technology at home and abroad from the perspective of technical level, safe operation and green environmental protection. Finally, the development of hydrogen fuel cell power generation technology is prospected from the aspects of battery performance, production cost and energy utilization. [ABSTRACT FROM AUTHOR]