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Generally, development in the pulp and paper industry requires extensive cutting of trees, which in effect contributes to deforestation. The dramatic growth in demand for wood supply, combined with the increasingly increasing cost of timber, has created a surge of interest in the use of non-wood plant fibres for paper production in widely developed countries. The use of waste material in pulping and paper-based industries could be beneficial as it helps prevent the need for disposal, which currently increases agricultural costs and causes environmental deterioration due to pollution and fires. The manufacture of sugarcane bagasse paper may help to minimize deforestation in the development of paper utilizing wood, which also contributes to the creation of biodegradable, biocompatible, and eco-friendly paper utilizing non-wood fibre. This would help the industry to develop sustainable technology in the current economy and environmental order. In the meantime, the magnetic material inside the paper acts as a filler can improves the quality and strength of the paper. While the incorporation of paper radiation will also improve the quality of pulp production, by preventing the presence of fungi on paper. This will be widely used on food wrapping or packaging that is clean is the most important aspect that should be taken to prevent food from being damaged. Biodegradable implies that it can be spontaneously broken down by microorganisms such as bacteria, fungi under some circumstances such as temperature, humidity and others. [ABSTRACT FROM AUTHOR]

The application of insecticides on local product filter paper can be made in three ways: droplet use pipette, manual spray, and printing spray. Insecticides play an essential role in a paper, mainly used for testing susceptibility. The way the insecticide is applied affects the distribution on the paper surface. The purpose of calculating the distribution of insecticides on local filter paper is to determine the amount of insecticide in the cavity volume of ordinary paper. The research aims to get the data quality of impregnated paper local production with various spray techniques. To determine the volume of voids on paper and determine the distribution of insecticides can be using ImageJ software. The type of paper used is locally produced filter paper with insecticide lambda cyhalothrin with a predetermined concentration. The study results showed that with the spray machine method, the distribution of insecticides was more evenly distributed than the standard spray method. The range of paper cavity volumes with a spray machine is shorter than the volume range of paper cavities sprayed manually (0.005113), while those with ordinary sprays are (0.007349). These differences indicate that the spray machine is better than the manual spray method. [ABSTRACT FROM AUTHOR]

Super teak is a fast grown species of teak (Tectona grandis Linn. f) derived from several clones. This has facilitated plantation rotations as short as 5 years. The main target of conventional plantation teak was initially for high value logs. Young teak wood from plantation forest usually has a small diameter. Moreover, the wood from very young stems is unsuitable for direct utilization, but advance wood processing technology can improve the wood properties of small diameter logs. This study aimed to assess the potential utilization of young super teak for high quality products namely furniture, flooring, and veneer, and assess the possibility of the use of manufacture waste for pulp paper and wood pellets as side products. The evaluation were carried out according to the National Indonesian Standard and other international standard requirements. 18 logs from wet (Bogor) and dry (Magetan) sites representing large, medium, and small diameter classes were collected. According to SNI 01-0608-1989 Timber for Furniture, 5-year-old super teak was suitable for furniture production. Furthermore, according to SNI 7732.1: 2011: Teak Veneer, the super teak was classified as Grade C because of the presence of sapwood, pinholes, tight and lose knots. According to Australian Timber Flooring Association, 5-year-old super teak was classifiesd as soft flooring group, the same group as mature teak & radiata pine. The young super teak was classified as Class Quality/Group II with very low active alkali consumption and low Kappa Number according to Indonesian wood fibre criteria for pulp and paper materials and Association of Pulp and Paper in Brazil. Finally, based on SNI 802: 2014 Wood Pellet, the super teak was recommended as by-products for utilising the wood waste. [ABSTRACT FROM AUTHOR]

A significant demand has been placed on the building material industry, especially in the last decade due to the increasing population, which causes a chronic shortage of building materials. The current study aims at utilizing waste paper to produce papercrete bricks and study their engineering properties, a step towards sustainable development. Papercrete is rapidly gaining popularity in the building construction industry worldwide because of its environmental friendliness, low-cost and lightweight. The study considered literature and related ideas up to conceptualization and design of the trial ratio used in testing. Trial mixes of paper sludge, sand, and cement at different proportions made papercrete bricks of dimensions 220×110×102 mm. The tests conducted included compressive strength and water absorption. The mixes of paper sludge, sand, and cement in the ratio of 50, 35, and 15%, respectively, gave the best results. The compressive strength increased with the increase in the curing period. The rate at which the papercrete bricks absorbed water reduced as the curing period increased for all the papercrete trial mixes. It was concluded that percentages of paper sludge less than 50% are recommended for non-load bearing walls such as parapet walls and partition walls. [ABSTRACT FROM AUTHOR]

The target of this idea is to plan the paper cutting machine utilizing Geneva component. This machine is utilized to decrease the manual work of paper cutting, and furthermore efficient. This machine is exceptionally valuable for paper fabricating industry likewise we can keep away from the human blunders and it can be used in schools, collages stationary shops, paper stores, etc. This project is designed by chain drive, Geneva mechanism, paper cutter, hinge joint and spring. This machine will minimize the errors occurred while cutting papers using hands and it will also reduce the risk of paper cutting.Thisventures is fixated on the plan and manufacture of an Automatic paper cutting machine utilizing some privately discovered materials. Paper is one of the significantly utilized material in our everyday exercises in bringing data's down essential data's, it is vital that there is a machine that can deal with it at a homegrown level to give the ideal structure for different use.The machine is tried and the yield is assessed. [ABSTRACT FROM AUTHOR]

There is a shortage of paper and paper products in Uzbekistan. In this regard, this work presents the results of studies of the possibility of obtaining paper from cotton cellulose and using cotton cellulose in combination with waste paper. Were studied methods of making prototypes of paper from cotton cellulose obtained from different varieties of cotton linti, as well as from a mixture of this cellulose in combination with waste paper at different ratios. [ABSTRACT FROM AUTHOR]

Quality and productivity are the things that are most often the focus of discussion in the production process. PT. Papertech Indonesia is one of the companies producing cardboard products or paper board industry (hard paper). The products produced in addition to core paper also produce other types of paper including: Chip Board, Super Chip Board, Cone Board, Core B. In producing paper, the thing that most affects the quality of a product is the change grade or the change in the type of product. If at the time of change grade there is an error in the settings it will cause problems, namely sheet break or broken paper. Sheet Break is broken paper which can cause a decrease in machine productivity and add defective products in the warehouse, this defect product is meant to not meet the specifications of the consumer. Six Sigma approaches and Failure Mode Effect Analysis (FMEA) used in this study to determine the sigma level value for sheet breaks, factors that cause sheet breaks and find solutions to reduce risk. The results showed that there are two machines that often experience Sheet Break, namely Couch Roll & Lumbreaker and Dryer 1st Group machines which are caused by various factors. Based on the value of the Risk Priority Number which is the largest for the cause of Sheet Break, namely unstable vacuum during Change Grade, Lack of understanding and skills in the Change Grade state, Lack of understanding of the steps for Change Grade. Based on these results, recommendations are given to minimize the causes of priority Sheet Breaks carried out for each category and each cause, one of the recommendations given is the use of appropriate vacuum equipment, conducting regular monitoring, training employees and implementing Kaizen. With these recommendations, PT. Indonesian papertech can use these recommendations as a form of improvement in order to minimize the occurrence of sheet breaks. [ABSTRACT FROM AUTHOR]

Briquettes produced from scrap paper are known for their low calorific value. The calorific value of briquettes from waste paper is in the fourth rank after waste wood, charcoal, and sawdust. Therefore, the correct ratio of composition mixture to create a higher calorific value is required. Spent Coffee Ground (SCG) has been selected as an added material in the composition of biomass mixture since SCG has a high calorific value and is easily found. The purpose of the study is to find the correct ratio that may increase the calorific value of the bio-briquettes made of scrap paper, based on comparative testing and analysis. There are four composition mixture samples used in the study. The first composition mixture is 90% of scrap paper and 10% adhesive; the second one is 70% of scrap paper, 20% of SCG, and 10% adhesive; the third composition mixture is 50% of scrap paper, 40% of SCG, 10% of adhesive; and the fourth composition mixture includes 30% of scrap paper, 60% of SCG and 10% of adhesive. The study shows that the greater ratio of SCG used in the composition will result in a higher calorific value. The research concludes that briquettes achieve their best performances in the composition mixture of 40% of SCG. In the proposed ratio, briquettes are not brittle and produce 5.366 kcal/kg of calorific value; 6.58% of water content; 5.37% of ash content; 28.28% of volatile matter; and 8.91% of shatter index. Therefore, the studied composition can be considered to produce the most efficient biomass briquettes made from scrap paper [ABSTRACT FROM AUTHOR]

This study explores the possibility of removing residual optical brighteners in paper, caused by the migration of OBAs from commercially available papers through water during an instance of water damage. From the standpoint of conservation treatment, this OBA removal experiment was conducted in the hope of providing a treatment method for the removal of OBAs as a reference point for the conservation community. This study presents an example case of removing offset OBAs, and the results of the removal experiment are discussed in order to explore the feasibility of the proposed treatment method. The results demonstrated that the removal of offset OBAs using a compatible conservation treatment is feasible. A combination of daylight bleaching with alkaline water and aqueous hydrogen peroxide solution is recommended, and the time of exposure to sunlight should be shortened as much as possible if performed on a bright, sunny day. However, performing such treatment on the actual cultural artefact will require careful assessment with regards to necessity and safety. [ABSTRACT FROM AUTHOR]

Cellulase enzymes in the refining process in paper making are known to reduce energy and grinding costs. The industry requires large amounts of cellulases related to the low activity of cellulases produced. The optimization process is known to increase the value of cellulase activity produced. In the process of cellulase production, carbon sources based on cellulose waste, such as grass and bagasse, can reduce production costs. The purpose of this study is to find out the optimum fermentation carbon source that produces the highest cellulase activity between grass and bagasse by actinomycetes ID07–287. It also aims to increase the value of cellulase activity by optimizing the concentration of selected carbon sources and the pH of the fermentation media. This research includes the preparation of grass biomass and bagasse, the production of cellulase enzymes for the selection of the optimum carbon source, and the optimization of the production of carbon source concentrations and the pH of the fermentation media. Based on the research results, it is known that grass is the best fermentation carbon source, with an activity value of 0.086 U/mL. The results of optimization of production, at a concentration of 2%, is the optimum concentration with an activity value of 0.099 U / mL and the pH of the fermentation media 9 produces an optimum activity value of 0.107 U/mL. [ABSTRACT FROM AUTHOR]

It is essential to use enzymes as a substituting chemical to enhance the properties of pulp and paper. However, there is a limited match between the material and the enzymes applied. Therefore, this research aims to increase pulp and paper properties enzymatically by adding papaya latex bio-activator in the recycled pulp process using the hydrolyzing method. The results showed that this bio-activator made the fiber bulky due to the storage of more water in the pulp, thereby expanding the fiber surface, which facilitated tearing and increasing fibrillation in the refining process. This process led to changes in the surface morphology of fiber and structure of pulp fibers, which were determined from the Scanning Electron Microscopy (SEM) test. It also increased fiber fibrillation, which led to a rise in bond strength between fibers capable of raising paper properties. In conclusion, papaya latex bio-activator reduces the use of chemical hydrogen peroxide (H2O2), increases fibrillation in the refining process and reduces environmental liquid waste pollution. [ABSTRACT FROM AUTHOR]

Variation of fly ash and pulp paper composition at 110°C for 6 hours was carried out to discern the effect of fly ash and pulp paper addition in papercrete. sixth variations in paper pulp and fly ash composition were employed to perceive the characteristic that occurs in the sample. The papercrete material composition was weighed, mixed until it became homogeneous and then casted in a mold with a size of 18 x 5 x 2 cm3. Papercrete samples were allowed to stand within the mold at room temperature for 24 hours and released from the mold to stand again for the next 24 hours, after which it heated at 110°C for 6 hours. Characterization using XRF, SEM-EDX as well as Mechanical and physical tests carried out after the samples was cold. Papercrete with sample code K6 has the highest flexural strength and density value of 2.03 MPa and 2.4 gr/cm3 while papercrete with sample code K1 has the lowest flexural strength and porosity value of 0.4 MPa and 17.89%. Characterization shows that the chemical composition of the samples was dominated by the oxide compound CaO and SiO2 in papercrete. [ABSTRACT FROM AUTHOR]

The article examines the structure of silk fibers and ways of efficient use of fiber waste. Based on the analysis of the composition and structure of the fibers, it is possible to use them for paper production. The use of short staple fibers in the production of stock paper and the processes of preparing them for incorporation into paper pulp are widely covered. Information is provided on the technological process of cleaning fibers before adding them to paper pulp. The influence of the mass fraction of fibers in paper on its strength, breaking and tearing has been thoroughly analyzed and illustrated by means of graphs. For the production of high-quality paper, for example, valuable paper, for the preparation of paper used in printing, drawing, painting, etc. Fiber semi-finished products must be cut to the required length and separated into individual fibrils before crushing (grinding). The technology of preparation of natural silk waste as raw material for paper production is presented. In addition to silk fiber cotton fiber was also studied in the research work. Theoretically, the effect of fibers in tearing and breaking of paper is shown in the pictures. The use of fibers in the production of anti-counterfeiting paper and the process of adding them to the pulp are given. [ABSTRACT FROM AUTHOR]

Paper-based food packaging serves to maintain product quality for a longer period. The addition of nanocellulose as a coating agent on paper can improve the quality of the recycled paper. Modification of nanocellulose with Al3+ can occur due to the interaction between Al3+ ions and the electrostatic negative surface charge of nanocellulose which can degrade microbial cells. Modification of nanocellulose was carried out by soaking it in AlCl3 solution then homogenized by an ultrasonic wave which was used for defibrillation of nanocellulose and encourage crosslinking of nanocellulose and Al3+ ions. The paper coating technique uses a deep coating by immersing the paper in modified nanocellulose suspension. The variations of AlCl3 concentration used were 0.01, 0.05, 0.1, and 0.15 N as much as 25 ml on 1 g dry base nanocellulose. The concentrations of nanocellulose used were 0.5, 1, 1.5, and 2 g in 25 ml of Al3+ solution. The results of paper water absorption and WVTR test showed that modified nanocellulose can reduce the absorption of water vapor and water absorption from the paper, so it has water resistance. Nanocellulose coated can increase the hydrophobicity of the paper based on contact angle test. Antimicrobial test on coating paper also showed antimicrobial activity on E.coli test bacteria and not on S. aureus bacteria. [ABSTRACT FROM AUTHOR]

Karnaphuli Paper Mill (KPM) is the country's largest and state-owned paper mill, located at Chandraghona, Chattogram, alongside the Karnaphuli River. At present, 10 to 12 tonnes of paper are being produced daily, resulting in approximately 1000 to 1200 tonnes of waste effluents every day. The water of the Karnaphuli River is being polluting due to untreated effluents discharged from KPM outlets, posing a threat to the Karnaphuli River's aquatic lives. Thus, this research is carried out to test the raw effluents of KPM and the Karnaphuli River water, to compare the water quality with the World Health Organization (WHO) and Bangladesh Environmental Conservative Rules (BECR, 1997) standards to find out the effects of this water on aquatic lives and to suggest remedial measures. Raw effluents were collected from three points of outlets of KPM, and the river water were collected from ten points at upstream and ten points at downstream of outlet at an interval of 100 m each to test the water quality parameters, such as, pH, BOD, COD, total dissolved solids (TDS), Alkalinity, Hardness, Chloride, Turbidity, Fecal coliform, Al, Sn, and Co. The test results were found to be satisfactory, except a few parameters at few locations, which might have negative impacts on river water and aquatic lives. To mitigate the unacceptable concentrations, it is suggested to set up an effluent treatment plant (ETP) to treat the KPM effluents before discharging into the Karnaphuli River. [ABSTRACT FROM AUTHOR]

The "Trim loss issue" (TLP) perhaps uttermost intriguing issues with regards to structure of advancement research It targets to determine the best cutting example of several things of varying lengths from a load of regular size measurable to meet the clients' wants while reducing waste due to trim misfortune. The subsequent numerical pattern is exceptionally nonconvex in nature went with a few imperatives with additional limitations of paired factors. This evades the utilization of straight advancement techniques. In this review work we utilize synergetic differential advancement (SDE) for the arrangement of this sort of issues. Four theoretical yet significant instances of trim misfortune issue emerging are used in the paper industry the test. The exploratory outcomes contrasted and those of different procedures show the capability of the SDE to take care of the issue. This paper includes introduction which explains a complete terminologies related to cutting stock problem, in literature review section we discuss various mathematical model which already exist in literature, in next section we discuss about mathematical formulation to reduce wastage. [ABSTRACT FROM AUTHOR]

This study aimed to evaluate the preparation and characterization of paper towels from watermelon rind waste. The paper towel manufacturing process had several stages: the drying process, pulping process, bleaching process, and printing process. There were five treatments, including paper towels use of NaOH 2.5 M with pulp recycling, paper towels use of 1 NaOH with pulp recycling, paper towels use of 1 NaOH, paper towels use of 1 NaOH with additives, and paper towels use of 1 NaOH with different drying time (110 oC for 60 minutes with ten days of the natural drying). Several characterizations have been employed, such as physical and mechanical properties and optical and chemical properties. The treatments of paper towels were tested, and the test results were compared with SNI 7891: 2017. From the FTIR test, it was observed that the functional groups formed from paper towels from watermelon rind waste. From the Microscope test, paper towels from watermelon skin should be added with materials with long fibers. Based on Physical and Mechanical Characterization, paper towels comply with the SNI. Based on optical characterization, it complies with the SNI for treatments 4 and 5. Chemical characterization is higher than standard. It can be concluded that the natural paper towels from watermelon rind waste comply with the standard of SNI ISO 7891:2017 about Basic Paper towels within the parameter of grammage and water absorption capacity, Tensile strength except for the parameter of tensile strength, pH extract, and fluorescence. [ABSTRACT FROM AUTHOR]

The paper soap is an innovation in making soap. The form of paper soap is unique like thin sheets paper. The addition of natural compounds such as virgin coconut oil (VCO) and whey kefir in soap making could improve the quality of paper soap as herbal product. This research aims to determine the optimum formulation of herbal paper soap in three whey kefir mass composition 8%, 18% and 23%. The paper soap makes using a hot process with additional glycerin as a plasticizer. The characterization of herbal paper soap is using parameters tested of pH value, stability of foam, unsaponified fat, organoleptic test, and water content. The characteristic of paper soap has a thickness of 1 mm, smells good, and slightly yellowish. The best herbal paper soap is obtained for a composition of 8% with water content, unsaponified fat, pH, and foam stability 28%, 0.39%, 8 and 83% respectively. Therefore, the herbal paper soap with whey kefir of 8% has complied SNI no. 3532-2016 standard. [ABSTRACT FROM AUTHOR]

The major aim of this study is to compare the power generation of carbon felt electrode and carbon paper electrode operated Microbial fuel cells (MFC) using restaurant wastewater. Restaurant wastewater samples were collected from MFC with carbon felt electrode (N=13) and carbon paper electrode (N=13) operated for 10 days (G power 80%). Voltage was measured using a multimeter and current, power, power density was calculated from it for both groups. The Power generation was found to be high in MFC operated with carbon felt electrode (410 mW/m2) due to its active surface area, strong conductivity, and good biocompatibility compared to carbon paper electrode (121 mW/m2). The independent sample T-test was done which showed that the power generation of MFC operated with carbon felt electrode (p<0.001) found to be significantly higher compared with MFC operated with carbon paper electrode. The study shows that carbon felt electrode operated MFC is able to achieve higher power generation compared to carbon paper electrode. [ABSTRACT FROM AUTHOR]

Paper is now an integral feature of humanoid existence in a multitude of ways, and it is getting more and more popular. In ordinary life, a massive portion of paper is consumed. The difficulty of finding feedstock is becoming ever more acute as paper consumption rises. This ultimately led to the extraction of resources. Since the demand for paper has skyrocketed, recycling paper has become much more popular. The accumulation of vast quantities of waste paper in any big organization, notably institutions of higher education such as schools and universities, seems to be fairly prevalent. It's also worthwhile to make optimum use of recyclable materials (office files, craft papers, registers, etc.). A recyclable machine will help minimise energy consumption and paper waste. The valuable feature of salvaging would be that it lessens the environmental impact by a couple of percent. The design and fabrication of both humanly and remotely controlled paper recycling programmes are studied using previous literature. producing a lightweight, easily handled composting machinery that can be deployed to ease the process and reduce the cost of paper production. Then the effluents would be treated employing various natural filters due to paper recycling. Hibiscus, gooseberry, and vetiver are being used to treat the contaminated water. All of these constituents operate together to clear the water of surplus particles. Waste water treatment is indeed a process of preventing impurities from effluent and transferring them to an effluent that may be recycled into the water cycle. The process of turning waste water into fresh water that can be dispersed directly into the ecosystem. The effluent holds a variety of natural substances, which may also degrade the overall quality of the water. As nothing more than a corollary, water treatment principally helps to clear debris and other pathogens. The level of trash, which is routinely emitted into the ether, is reduced in terms of treatment of wastewater, boosting the atmosphere's health. In this study, both paper reutilization and waste water treatment studies are carried out using various literature. [ABSTRACT FROM AUTHOR]

The global production of paper is on the rise, thus leading to increasing amounts of waste in different stages of paper manufacture. Paper sludge waste is the most abundant and there is a big potential to reuse it after appropriate processing. This research paper analyses paper sludge waste fired at 900°C temperature for 2 h in terms of mineral composition, particle density and water demand in cement-based mixtures, as well as the effect of paper sludge waste on the density, ultrasonic pulse velocity, compressive strength and mineral composition of cement-based specimens. In the cement paste mixtures 0%, 2.5%, 5%, 7.5% and 10% of cement was replaced with paper sludge waste fired at 900°C temperature for 2 h. The ratio between water and solid substances was 0.35. Gehlenite and calcium oxide were found to prevail in the mineral composition of paper sludge waste, whereas water demand of cement-based mixture incorporating paper sludge waste increased 30%. The intensity of XRD curves revealed that a higher content (more than 7.5%) of paper sludge waste fired at 900°C temperature for 2 h in the mix increases the amount of portlandite and reduces the amounts of cement minerals: alite and belite. An empirical equation was drawn on the grounds of statistical analysis to calculate the compressive strength according paper sludge waste content fired at 900°C temperature for 2 h. The correlation and determination factors more than 0.9 demonstrate that the change of compressive strength in relation to paper sludge waste content can be described by the second degree polynomial equation and the optimum content of paper sludge waste fired at 900°C temperature for 2 h in the cement matrix is 5%. The highest density and ultrasonic pulse velocity values of cement stone specimens after 28 days of curing were obtained of specimens containing 5% paper sludge waste. [ABSTRACT FROM AUTHOR]

The utilization of waste into potential energy sources has received much attention in recent years. Various technology was applied with the purpose to convert waste into a useful product. One of the applications of waste to energy ideas is refuse derived fuel (RDF). In Universitas Pertamina Area, paper and plastic are two types of waste that generate large amounts of waste every day. It is due to main activities coming from educational and office activities. The generation of paper waste reached 129.1 kg/day, while 93.9 kg of plastic waste was thrown away at the temporary waste shelter every day. In this research, the various compositions of paper and plastic waste (0%, 25%, 50%, 75%, 100%) were pelletized into RDF to investigate the water content, ash content, and calorific value the RDF then compared to the standard. The result showed that all RDF compositions had passed the standard quality of RDF from the point of water content and ash content (RDF standar is <25% of water content and 20% of ash content). On the other hand, the calorific value of RDF (paper 100%) did not meet the RDF Standard (15 MJ/kg) while the rest of the RDF composition had passed the standard. When combined with the amount of waste generation, the composition of 100% plastic waste was the highest potential caloric value reached 3,954.0 MJ/day. The potential of waste utilization into RDF can be proposed as a solution for waste management, especially in the university area. [ABSTRACT FROM AUTHOR]

This paper presents the results obtained from the analyses performed on seaweed and paper made with algal biomass addition using different analytical techniques, such as scanning electron microscopy with energy dispersive X-ray analysis (SEM-EDX) and the ion beam analysis (IBA) techniques Particle-induced X-ray emission (PIXE) and gamma-ray emission (PIGE). The analyzed samples consisted of seaweed from the Ulva rigida C. Agardh 1823 species collected from the Black Sea coast, Romania, and filter papers with different mass addition (0.5, 1, 2, 4 and 8%) of seaweed. Seaweed introduced into the paper can dislodge some of the cellulose fibers, helping to reduce the amount of stranded seaweed that is currently not valorized in Romania. From the analysis of the results, it results that no potential toxic elements have been identified in the algae structure and the algal biomass could be used in the filter paper manufacture. [ABSTRACT FROM AUTHOR]

In current work, the paper mill effluent is treated with electro-coagulation used as a iron and aluminum as sacrificial materials. Various operating parameters such as pH, treatment time and applied voltage were assorted and their influence on efficiency of electro-coagulation was studied. From the experimental investigation it has been found out that at optimum operating conditions like pH 7, treatment time 60 min and applied voltage 20V, COD and Turbidity removal efficiency were highest. [ABSTRACT FROM AUTHOR]

Every person on the planet uses solid materials. Natural resources are typically utilised in the production of new papers. Trees must be cut down to make way for new paper products. The authors want that this manuscript will raise public awareness about recycling and the relevance of solid waste management (SWM). Many forms of environmental problems may arise as a result of the depletion of natural resources. A survey was conducted for this purpose, in which 144 out of 180 participants took part. All age groups, all income levels, all types of citizens, and all levels of educated persons have participated in this study. After examining the results of this survey, it has been determined that the public is unaware of the socioeconomic benefits of recycling and solid waste management. People are also unaware of the cost-effectiveness of recycling. It could be a job-creating enterprise or industry. It became beneficial for the welfare of society, employment and environment. [ABSTRACT FROM AUTHOR]

Hydroxyapatite, Ca10(PO4)6(OH2) is major mineral constituent of vertebrate bones and teeth. It is extensively used in biomedical field due to its biocompatible, bioactive and osteoconductive properties. Hydroxyapatite (HAp) has recently gained attention as efficient adsorbents, owing to its physical and chemical nature as it can substitute both cationic and anionic complexes present in an aqueous solution in its atomic arrangement. The Hydroxyapatite has been reported to be an efficient adsorbent in removing divalent heavy metal ions. In this work, an attempt has been made to synthesis hydroxyapatite by wet chemical precipitation method by extracting the calcium source from paper sludge ash. Experimental works were carried out under controlled condition by maintaining pH, temperature, stirring speed and aging period. The obtained powder is optimized at 6000C based on the TG-DTA results. The presence of hydroxyl ion in the apatite lattice was confirmed by absorption bands at 3410.15 cm−1 through FT-IR studies. The mean pore diameter and pore volume of the HAp was deducted through BET analysis as 45.22 nm and 1.7100 cm3g−1. [ABSTRACT FROM AUTHOR]

Effect of a natural compound extracted from Piper Betel leaf by determining bactericidal and or bacteriostatic effect to check antimicrobial efficacy on the pathogenic microorganisms. Bioactive compound extracted in different solvents i.e distilled water, ethanol, and methanol, and its effectivity was determined by measuring the zone of clearance (1 group and 96 samples per group by keeping threshold 0.05 and G power 80%, coincidence interval 95%, and enrollment ratio as 1) by agar diffusion method using kanamycin (30) as a control for the different time period (24 Hrs, 48Hrs and 72Hrs) at 37°C. Promising results were found for the zone of clearance in Escherichia.coli with a significance of about P<0.001 in the ethanol extract after 72 hours of incubation. Compared to 10% extract application where growth of S.aureus was reduced to 4%, addition of 100% crude inhibits bacterial growth up to 95% approximately. For S.aureus and E.coli though ethanol extract was found effective however no significant effect was observed for inhibiting Pseudomonas. Novel bioactive compound extracted from Piper Betel leaf was found effective against pathogens and can be used as a natural component with antimicrobial efficacy in the field of medicine. [ABSTRACT FROM AUTHOR]

The demand for cement has grown due to the rapid growth of the building sector. Cement manufacture, on the other hand, produces more greenhouse gases and carbon dioxide. As a result, different construction materials must be sought. Paper pulp is made from waste from the paper industry. Every year, the paper industry consumed a significant amount of land in the surrounding area. Some wastes are thrown on land as a disposal method, while some businesses burn their industrial waste in incinerators, causing serious air pollution issues. The impact of employing paper pulp and crushed stone dust as partial replacements in concrete is discussed in this study. The advantages of using paper pulp with crushed stone are explored in this study. Furthermore, this research presents the findings of an experimental inquiry for M35 grade concrete employing wastepaper as an extra ingredient in concrete mixes for housing projects. [ABSTRACT FROM AUTHOR]