Search

Based on laser inspection photography and control variable method, the development formula of indandione was systematically studied, the formulations were optimised, the influence of adding glacial acetic acid and chlorine salt to the formula on the development effect of fingermarks was further studied. The results showed that the optimal formula was formula: 0.25 g indandione, 225 mL ethyl acetate, 225 mL petroleum ether, 25 mL ice acetic acid, 25 mL storage solution (0.2 g zinc chloride, 30 mL ethanol), and suitable for domestic climate environment, which had a good effect on the porous objects of fresh and within 20 d of the aged left fingermarks; fingermark fluorescence was significantly enhanced. The ex-perimental results provide a method to follow for optimizing the formulation of indandione fingerprint de-velopment, realizing the colorimetric and fluorescence dual-mode development of sweat latent fingermarks on porous objects. But attention should be paid to the characteristics of the porous object and the control of the amount of glacial acetic acid and the type of chlorine salt. [ABSTRACT FROM AUTHOR]

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]

Copyright of Applied Chemical Industry is the property of Shaanxi Research Design Insitute of Petroleum & Chemical Industry and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Applied Chemical Industry is the property of Shaanxi Research Design Insitute of Petroleum & Chemical Industry and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

This paper provides an overview of the current research status on the physical, chemical, and engineering characteristics of saline-alkali soils, focusing on issues such as dilatation, collapsibility, and freeze-thaw damage in the soil materials of saline-alkali soil regions. To mitigate the adverse effects of saline-alkali soils on engineering projects, common stabilization methods are summarized and their respective solidification mechanisms are analyzed. Furthermore, this paper reviews the physical and mechanical properties of saline-alkali soils after solidification through various approaches, particularly in cold regions. The prospects for the future development of solidifying saline-alkali soils are discussed, along with potential directions for engineering research in this field. [ABSTRACT FROM AUTHOR]

This paper summarized recent research progress on the influencing factors and the enhancement methods of heat and mass transfer in falling film absorbers. In terms of influencing factors, this paper discussed tube spacing and diameter, solution inlet flow rate, temperature and concentration, coverage ratio of heat transfer surface, cooling water temperature and flow rate and water vapor pressure. In terms of enhancement methods, this paper summarized the methods of using additives in absorbent and optimizing the heat transfer surface of falling film absorbers. The research direction of the next stage will be to explain the influence mechanism of additives on heat and mass transfer through molecular dynamics simulation and enhance heat and mass transfer by integrating various methods. [ABSTRACT FROM AUTHOR]

This paper aims to analyze the demand and trends of chemical new materials in sports equipment and provide corresponding evaluations, justifications, and recommendations. This paper provides an overview of the eurrent status and progress of this topic, summarizing the existing research achievements. Furthermore, it proposes strengthening collaboration between the development of chemical new materials and the sports equipment manufacturing industry, promoting technological innovation and knowledge transfer, to enhance the quality and performance of sports equipment and meet eonsumersz demand for high-quality products. This research makes significant theoretical contributions and practical implications in fostering the development and application of chemical new materials, advancing technological progress, and enhancing market competitiveness in the sports equipment industry. [ABSTRACT FROM AUTHOR]

Fhis paper systematically analyzes the hazards posed by Spirogyra. The algae starts to grow in late spring and early summer, forming algal mats on the water surface, emitting fishy odors, disrupting the ecosystem balance Jeopardizing water quality, and impacting the waterJ s ecological landscape. Analysis reveals that SpirogyraJ s growth is influenced by hydrodynamic conditions, light intensity, nutrients, water temperature, and other factors. The study focuses on in-situ control methods for Spirogyra, emphasizing its systematic prevention and controL While emergency removal can involve physical and chemical methods, long-term Spirogyra control requires adopting biological approaches. Moreover, Spirogyra exhibits robust reproduction under harsh environmental conditions, making it suitable for bioremediation due to its carbon sequestration and adsorption capacity, applicable to water ecosystems. The paper discusses the prospects of Spirogyra in the water environment concerning water body nutrients, the ecological environment, and biomonitoring evaluatio n. [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 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]

The demand for diesel has been decreasing year on year in recent years, LCO (light cycle oil of FCC unit), as the main component of diesel pools, has encountered the problem of overcapacity. The key to solving the overcapacity of LCO is to make reasonable use of the rich bicyclic aromatic hydrocarbon components in LCO and explore new technologies for the conversion of suitable aromatics to aromatics. Starting from the structural composition of LCO, this paper systematically summarizes the recent development status of six technologies for producing various high-value products using LCO as raw material. Among them, LTAG technology has a high yield of high octane gasoline, but reducing reaction hydrogen consumption is a major challenge; LCO preparation of BTX is an effective method for oil conversion, but high hydrogen consumption low selectivity of BTX lead to poor tech no-economics; the preparation of COP- NA resin by LCO can produce high-performance B resin with by-production of high cetane diesel components. However, the curing and crosslinking agents used still have the problem of being expensive. Finally, summary and outlook were made on the current technical issues of LCO production of high-value products. [ABSTRACT FROM AUTHOR]

This paper focuses on the utilization ways and research status of phosphorus tailings resources in phosphorus magnesium fertilizer, calcium magnesium phosphate fertilizer, phosphorus containing organic fertilizer, medium and trace element fertilizer and compound fertilizer, and emphasizes the botanical avail-ability of nutrients in phosphorus tailings resources, with a view to providing theoretical support for the fertilizer utilization of phosphorus tailings resources. Promote the full quantitative utilization of mineral resources and nutrients, and promote the green transformation and upgrading of the fertilizer industry. [ABSTRACT FROM AUTHOR]

This paper mainly reviews the research status of PV technology in the separation of organic mixtures in recent years. The main research achievements of PV technology in the separation of polar/non-polar mixture, aromatic/alkane, isomeric, and removal of sulfide in gasoline are described in detail. At the same time, we look forward to the development direction of PV technology in the field of separating organic mixtures and provide a reference for the subsequent research on the separation of organic mixtures by PV technology. [ABSTRACT FROM AUTHOR]

Based on the grasp of the current situation of modified bio-asphalt research, the paper summarizes the preparation process of modified bio-asphalt, analyzes its modification mechanism and evaluates its modification effect, aiming to provide reference for the research and application of modified bio-asphalt. The analysis shows that:balancing the high and low temperature performance of modified bio-asphalt is the key to solving the defects of bio-asphalt in the future; the establishment of a joint preparation system of modifier, bio-oil and matrix asphalt is conducive to improving the availability and research value of bio-asphalt. [ABSTRACT FROM AUTHOR]

This paper provides an introduction to groundwater PRE technology, in situ bioremediation technology, and in situ chemical oxidation technology. It also presents a summary of the core-shell structure and physical and chemical preparation methods of nZVI. Furthermore, it discusses the mechanism by which nZVI degrades heavy metals, non-metallic inorganic substances, halogenated organics, and antibiotics in groundwater through processes such as adsorption/reduction, precipitation etc. The interaction mechanism between nZVI and microorganism coupling system is described along with an analysis of the promoting and inhibiting effects that nZVI has on microorganisms. Additionally, the research progress on removing groundwater pollutants using coupling systems is discussed. Finally, the future research focus for coupling technologies is proposed. [ABSTRACT FROM AUTHOR]

Based on the research status and progress of remediation technology combination of contaminated soil and groundwater in petrochemical sites at home and abroad- This paper summarizes the advantages, disadvantages and application scenarios of each restoration technology combination, summarizes the existing problems of the restoration technology combination, such as unclear restoration mechanism, insufficient coordination of contaminated soil and groundwater restoration, and few pilot demonstration research results of actual contaminated sites. The development trend of restoration technology combination research and application is also prospected. In order to provide important reference for the development and application of low-cost and efficient remediation technology of contaminated soil and groundwater in petrochemical sites. [ABSTRACT FROM AUTHOR]

This paper firstly describes the basic principle of low-temperature plasma technology. Secondly, the applications of plasma in surface modified carbon nanotubes, graphite, graphene oxide and new porous carbon materials are introduced respectively. And some research results in this field at home and abroad are listed. Some shortcomings of surface modification by low-temperature plasma are discussed and its future development is prospected. [ABSTRACT FROM AUTHOR]

This paper introduces the development history of inorganic coagulants, including iron salt coagulants, aluminum salt coagulants and titanium salt coagulants, focuses on the mechanism of action and research progress of a new type of coagulant (zirconium salt coagulants), and summarizes and prospects the future research and application direction of zirconium salt coagulants on this basis. [ABSTRACT FROM AUTHOR]

The special wetting surface structure for oil-water separation is introduced this paper, including superhydrophobic-superoleophilic surfaces, superhydrophilic-underwater superoleophobic surfaces and su- perhydrophilic-superoleophobic surfaces. The preparation method and properties of PLA oil-water separation materials are summarized, such as impregnation, spraying, electrostatic spinning, phase separation, grafting, supercritical CO2 foaming and 3D printing. Future development trend is prospected. [ABSTRACT FROM AUTHOR]

This paper describes the occurrence characteristics of microplastics in sewage treatment plants, discusses the mechanism of removal of microplastics by physical, chemical and biological treatment, and analyzes and evaluates the results of existing microplastic removal technologies. On this basis, the existing problems in the removal process of microplastics were pointed out, and the research on removal of microplastics was prospected. [ABSTRACT FROM AUTHOR]

Sonodynamic Therapy (SDT) is a non-invasive means of eaneer treatment using focused ultrasound. The synergistic strategy based on SDT for liver cancer has high research significance and clinical translational value. This paper summarized the therapeutic mechanism and common acoustic sensitivities of SDT, analyzed the reasons why it is difficult to satisfy the current treatment of liver cancer tumors based on single mode acoustic dynamic therapy, and focused on the research progress of acoustic dynamic therapy, chemotherapy, photodynamic therapy, photothermal therapy and other dual synergistic treatment modes, as well as multi-mode synergistic therapy based on acoustic dynamic therapy. The aim is to provide reference and guidance for the future SDT collaborative mode treatment of liver cancer and other types of cancer. At the same time, it points out that SDT collaborative therapy still faces problems in the research process, such as the insignificant effect of single therapy and the few studies on multi-modal combined therapy. Finally, it puts forward the development prospect of developing new acoustic sensitizing agents, exploring the mechanism of combined therapy and realizing real-time diagnosis and treatment. [ABSTRACT FROM AUTHOR]

This paper mainly reviewed the study progress of CO2 separation membranes based on zeolite materials, including the CO2/CH4 separation performance of zeolite inorganic membranes with different topological structures and zeolite-filled mixed matrix membranes. The current research bottlenecks and corresponding improvement methods of the two membranes were discussed. According to the above points, the following two points were proposed as future research focus to promote the industrialization of zeolite- based CO2 separation membranes: preparation and defects-healing of ultra-thin inorganic membranes, structural regulation and structure-activity relationship research of mixed matrix membranes. [ABSTRACT FROM AUTHOR]

In order to solve the problems of high cost of microemulsion use and the limitation of microe- mulsion application in high temperature and high salt strata, this paper conducted a systematic research on the development of chemically driven microemulsions and the unique properties of nanoparticles, and summarized the synergistic effect between nanoparticles and microemulsions, the effect of nanoparticle incorporation on the applicability of salinity to the microemulsions as well as the influence on the rheological properties. The current status of nanoparticle synergistic microemulsion research at home and abroad is summarized and reviewed, and the synergistic effect between nanoparticles and microemulsions is summarized to produce mechanisms such as low interfacial tension, change of wettability, reduction of chemical adsorption, enhancement of stability, and improvement of rheological ratio. At present, the application of nanoparticles in microemulsions is still in the exploratory stage, which requires further theoretical analysis and experimental research. [ABSTRACT FROM AUTHOR]

To evaluate the potential hazards of antibiotics in the environment, this paper reviews the sources of antibiotics, and the occurrence status of antibiotics in different environmental media, including water environment, soil and sediment, and food, and the analysis shows that the concentration level of antibiotics varies significantly in different environmental media, and shows obvious seasonal and regional differences. [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]

Copyright of Applied Chemical Industry is the property of Shaanxi Research Design Insitute of Petroleum & Chemical Industry and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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]

This paper takes degassed heavy oil in Liaohe oilfield as the research object, by compounding anionic, non-ionic surfactants, and alkaline agents, studied its viscosity reducing effect on heavy oil and the dynamic stability of emulsion. The optimal compounding system was selected and the effects of interfacial tension and droplet size on the stability of emulsions in compounding systems were investigated from a microscopic point of view. The results showed that all the four single surfactants reduced the viscosity of heavy oil emulsions, among which sodium oleate had significant viscosity reduction effect, but the stability is slightly poor. In the binary compounding system, the solute ratio of sodium oleate to APE-9 is 6: 1, with the best synergistic effect, heavy oil emulsions not only reduces viscosity but also improves stability, and the viscosity reduction rate continues to be above 97%. In ternary system, the addition of Na2CO3 further reduces the interfaeial tension and increases the droplet size of the emulsion, exhibiting excellent dynamic stability. [ABSTRACT FROM AUTHOR]

Introduce the composition and pollution hazards of oily sludge. This article briefly describes the sources and characteristics of three types of oil sludge with high content, including tank bottom sludge, floor sludge, and refinery sludge. This paper mainly analyzes the technological principles of the traditional hot technologies of oily sludge resource treatment, such as pyrolysis, surfactant, reinjection profile control, lotion, etc・, as well as the advantages and limitations of the relevant processes and the application status at home and abroad. Explored two emerging technologies for treating oil sludge, namely microwave radiation and ultrasonic treatment, with the aim of providing reference suggestions for the resource utilization of oily sludge. [ABSTRACT FROM AUTHOR]

Significant progress has been made in the research of photocatalytic oxidation denitrification materials, building upon traditional denitrification technologies. This paper provides an overview of this progress, with a specific focus on various categories of catalysts, including titanium-based, zinc-based, iron-based, carbon-based, and bismuth-based catalysts. The analysis primarily delves into the band gap structure, denitrification mechanisms, and conversion efficiency of these photocatalytic oxidation denitrification materials, offering a comprehensive comparison. Additionally, the study explores the impact of various modification techniques, such as constructing heterojunctions, ion doping, surface modifications, and morphology regulation, on the catalytic activity of these photocatalytic materials. The findings indicate that key areas of future development and research in this field include adjusting the electronic structure of catalysts, creating heterostructures, expanding the absorption range to encompass visible light, and enhancing the catalystsJ resistance to water and sulfur. These aspects are expected to be pivotal directions for vancement and in-depth investigation. [ABSTRACT FROM AUTHOR]

This paper reviews the damage mechanism of SBS-modified asphalt binder under typical plateau climate conditions (freeze-thaw, salt erosion, intense ultraviolet radiation, and their coupling effects), and discusses the means to improve the durability of SBS modified asphalt under special plateau climate conditions. The results show that the durability of SBS・modified binder asphalt is higher than that of base asphalt, but the durability of SBS modified asphalt in high让ude plateau areas still needs to be improved. Through a summary of existing research, it is found that the application of POE (polyolefin elastomer) and CR (crumb rubber) ean improve its durability, and enhance its suitability for use in high plateau areas. [ABSTRACT FROM AUTHOR]

This paper reviews the sources, emissions, transfer of microplastics and their major health risks, describes the research progress on microplastic removal by more widely used advanced oxidation processes, such as UV/H2O2, ozone/H2O2, UV-induced photocatalysis, solar/visible light-induced photocatalysis, and sulfate radical advanced oxidation, and gives a future research direction on the treatment of microplastics by advanced oxidation processes. [ABSTRACT FROM AUTHOR]

This paper systematically summarizes the current research status of red mud in alkali removal and activation, analyzes and compares the advantages and existing problems of each method, lists the application research of red mud in cementitious materials at home and abroad, and provides reference for the preparation of cementitious materials by red mud. [ABSTRACT FROM AUTHOR]

This paper introduces the preparation materials and methods of hydroxyapatite, as well as the meehanism of repairing contaminated soil, and focuses on the research progress in three aspects: The remediation effect of hydroxyapatite on heavy metal contaminated soil, the improvement of soil microbial community structure and the enhancement of soil enzyme activity, and analyzes the application advantages of hydroxyapatite. The future synthesis and application direction of hydroxyapatite are proposed. [ABSTRACT FROM AUTHOR]

Based on relevant domestic and international research on POPs in bioretention facilities, this paper reviews the removal efficiency and influencing factors of POPs in bioretention facilities, the adsorption characteristics of POPs by facility media, and the mechanism and response of microorganisms and plants in the facilities to POPs. It also looks forward to future development directions, in order to provide theoretical basis for improving the service life of bioretention facilities and controlling POPs. [ABSTRACT FROM AUTHOR]

This paper reviews the structural characteristics, application fields, and potential impacts on the environment and health of naphthalene-based PAHs. It provides a detailed analysis of non-catalytic thermal condensation, pressure-induced eondensation, and various catalytic condensation methods, especially the catalytic mechanisms of AlC13, HF/BF3, transition metals, and solid superacids SO4²/MxOy, revealing their condensation reaction mechanisms, advantages, and limitations. Finally, the unresolved issues and challenges in the field of naphthalene-based PAH eondensation are proposed, providing an in-depth reference for promoting scientific research and technological development in related fields. [ABSTRACT FROM AUTHOR]

This paper summarizes the types and research progress of synthetic-based drilling fluids at home and abroad, and describes the main influencing factors affecting synthetic-based drilling fluids. And the development trend and prospect of synthetic-based drilling fluids are also prospected, and it is believed that the development types of synthetic-based drilling fluids are mainly based on bio-based and gas-t〇・oil, which will provide a reference basis for the subsequent development of drilling fluids in unconventional oil and gas fields. [ABSTRACT FROM AUTHOR]

This paper introduced the relevant research on the transient temperature and humidity field measurement and performance evaluation of proton exchange membrane (PEM) electrochemical systems in recent years, and summarized the system control strategies(including PID, neuron network and fuzzy control, etc・). Intelligent PID control technologies such as fuzzy and neural networks have developed rapidly, and have better immunity and response speed in multiple-input and multiple-output systems. Since the proton exchange membrane system involves complex processes such as heat and mass transfer, electrochemical reactions, etc・, the theoretical modeling is relatively complex. Data-driven models can effectively combine theoretical models and experimental data and are simple to solve. It can provide operation data for PID real-time control and is an effective solution to improve the dynamic characteristics of PEM electrochemical system. [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]

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 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]