Pub Date : 2021-01-01DOI: 10.35248/2252-5211.21.11.420
Aditi Roy
The conventional sewage treatment systems have always been considered as a successful approach in treating sewage. However, the constraints and complications regarding the centralized approaches are progressively surfacing. Factors like improper design of the plants, poor maintenance, lack of reliable electricity supply and skilled labour has led to the non-functioning of most of the plants in the country. The present scenario of sewage treatment systems in India require a total paradigm shift from centralized to decentralized approaches where the sewage could be treated in the source itself. Thus, it is required to have an alternate approach from a disposal based linear system to a recovery based closed system. The decentralized approaches for treating sewage allows flexibility in management and possess greater benefits in terms of technical, economic, environmental and social aspects. Apart from the centralized systems, the decentralized sewage treatment systems are more reliable, cost–effective and have better efficiency in treating sewage without leaving any sludge for disposal. The potential advantages of decentralized systems signify that it is a method that deserves greater applications and attention by every section of society from policy makers to every interested members of the public.
{"title":"Potential for Applicability of Decentralized Approaches in Sewage Treatment Systems in Indian Scenario","authors":"Aditi Roy","doi":"10.35248/2252-5211.21.11.420","DOIUrl":"https://doi.org/10.35248/2252-5211.21.11.420","url":null,"abstract":"The conventional sewage treatment systems have always been considered as a successful approach in treating sewage. However, the constraints and complications regarding the centralized approaches are progressively surfacing. Factors like improper design of the plants, poor maintenance, lack of reliable electricity supply and skilled labour has led to the non-functioning of most of the plants in the country. The present scenario of sewage treatment systems in India require a total paradigm shift from centralized to decentralized approaches where the sewage could be treated in the source itself. Thus, it is required to have an alternate approach from a disposal based linear system to a recovery based closed system. The decentralized approaches for treating sewage allows flexibility in management and possess greater benefits in terms of technical, economic, environmental and social aspects. Apart from the centralized systems, the decentralized sewage treatment systems are more reliable, cost–effective and have better efficiency in treating sewage without leaving any sludge for disposal. The potential advantages of decentralized systems signify that it is a method that deserves greater applications and attention by every section of society from policy makers to every interested members of the public.","PeriodicalId":14393,"journal":{"name":"International Journal of Waste Resources","volume":"19 1","pages":"1-8"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80747984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.35248/2252-5211.21.11.416
Gemachis Genati, Mahmud Ahmednur, G. Berihun, Abraham Teym
Background: All over the world, countries are battling with waste management and governments are investing huge sums of money to tackle waste issues. Household solid wastes in Debre Berhan town are observed on the road, burning inside the village, and disposed of in sewerage. Objective: This study was aimed to assess the status of household solid waste management practice and associated factors in Debre Berhan town from March 1- March 30, 2020. Methods: Community-based cross-sectional study design was conducted in the household of Debre Berhan. Data was collected from 722 households, which were selected through multi-stage sampling from three kebeles. The Obtained data were entered using Epidata and finally analyzed using SPSS Version 21. Bivariate and multivariate analyses were done to identify the independent predictors of good solid waste management practice. Odds ratio with 95% confidence intervals and p-value <0.05 were used to assess the level of significance between determinant factors and the practice of solid waste management. Result: The majority of the households, 473(67.4%) solid waste management practice were poor. Age of the respondent (AOR = 4.9, 95% CI = 2.6-9.3 ), Educational level of the household heads (AOR = 0.54, 95% CI = 0.32-0.92), Attitude of Household head on Solid waste management (AOR = 0.90, 95% CI = 0.06-0.15), cleanup campaign participation (AOR = 0.61, 95% CI = 0.39-0.95) and house ownership (AOR = 0.45, 95% CI = 0.29-0.70) were significantly associated with household solid waste management practice in the study area. Conclusion and Recommendation: The current study revealed that solid waste management practice was poor. Educational level, homeownership, attitude, cleanup campaign participation, and attitude on solid waste management were found to be associated with solid waste management practice. The municipality should increase door-to-door solid waste collection service coverage, promote households on solid waste segregation, reuse, and proper disposal through continuous awareness creation campaigns and community-based programs.
背景:在世界各地，各国都在与废物管理作斗争，政府正在投入大量资金来解决废物问题。在Debre Berhan镇，人们在路上看到生活固体废物，在村内焚烧，并在下水道中处理。目的:本研究旨在评估2020年3月1日至3月30日Debre Berhan镇生活垃圾管理现状及其影响因素。方法:以社区为基础的横断面研究设计在Debre Berhan家进行。数据来自722户家庭，这些家庭是通过多阶段抽样从三个家庭中选择的。所得数据使用Epidata录入，最后使用SPSS Version 21进行分析。进行了双变量和多变量分析，以确定良好固体废物管理实践的独立预测因素。采用95%置信区间和p值<0.05的优势比来评估决定因素与固体废物管理实践之间的显著性水平。结果:绝大多数家庭，473户(67.4%)固体废物管理实践较差。调查对象的年龄(AOR = 4.9, 95% CI = 2.6-9.3)、户主的教育程度(AOR = 0.54, 95% CI = 0.32-0.92)、户主对固体废物管理的态度(AOR = 0.90, 95% CI = 0.06-0.15)、清洁运动参与(AOR = 0.61, 95% CI = 0.39-0.95)和房屋所有权(AOR = 0.45, 95% CI = 0.29-0.70)与研究地区的家庭固体废物管理实践显著相关。结论与建议:目前的研究表明，固体废物管理实践很差。研究发现，受教育程度、是否拥有房屋、态度、参与清洁运动和对固体废物管理的态度与固体废物管理实践有关。市政当局应增加挨家挨户的固体废物收集服务覆盖面，通过持续的提高认识活动和社区项目，促进家庭对固体废物的分类、再利用和适当处置。
{"title":"Assessment of Household Solid Waste Management Practice and Associated Factors in Debre Berhan Town, Amhara Regional State, Ethiopia","authors":"Gemachis Genati, Mahmud Ahmednur, G. Berihun, Abraham Teym","doi":"10.35248/2252-5211.21.11.416","DOIUrl":"https://doi.org/10.35248/2252-5211.21.11.416","url":null,"abstract":"Background: All over the world, countries are battling with waste management and governments are investing huge sums of money to tackle waste issues. Household solid wastes in Debre Berhan town are observed on the road, burning inside the village, and disposed of in sewerage. Objective: This study was aimed to assess the status of household solid waste management practice and associated factors in Debre Berhan town from March 1- March 30, 2020. Methods: Community-based cross-sectional study design was conducted in the household of Debre Berhan. Data was collected from 722 households, which were selected through multi-stage sampling from three kebeles. The Obtained data were entered using Epidata and finally analyzed using SPSS Version 21. Bivariate and multivariate analyses were done to identify the independent predictors of good solid waste management practice. Odds ratio with 95% confidence intervals and p-value <0.05 were used to assess the level of significance between determinant factors and the practice of solid waste management. Result: The majority of the households, 473(67.4%) solid waste management practice were poor. Age of the respondent (AOR = 4.9, 95% CI = 2.6-9.3 ), Educational level of the household heads (AOR = 0.54, 95% CI = 0.32-0.92), Attitude of Household head on Solid waste management (AOR = 0.90, 95% CI = 0.06-0.15), cleanup campaign participation (AOR = 0.61, 95% CI = 0.39-0.95) and house ownership (AOR = 0.45, 95% CI = 0.29-0.70) were significantly associated with household solid waste management practice in the study area. Conclusion and Recommendation: The current study revealed that solid waste management practice was poor. Educational level, homeownership, attitude, cleanup campaign participation, and attitude on solid waste management were found to be associated with solid waste management practice. The municipality should increase door-to-door solid waste collection service coverage, promote households on solid waste segregation, reuse, and proper disposal through continuous awareness creation campaigns and community-based programs.","PeriodicalId":14393,"journal":{"name":"International Journal of Waste Resources","volume":"11 1","pages":"1-25"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85377849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.35248/2252-5211.21.11.421
Vasudevan Subramanyan
{"title":"Human, Swine Waste Pose Dual Threats to Water Quality after Flooding","authors":"Vasudevan Subramanyan","doi":"10.35248/2252-5211.21.11.421","DOIUrl":"https://doi.org/10.35248/2252-5211.21.11.421","url":null,"abstract":"","PeriodicalId":14393,"journal":{"name":"International Journal of Waste Resources","volume":"531 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80179719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.35248/2252-5211.21.11.422
Wenshan Guo
{"title":"Holistic Assessment of Plastic Pollution in the Caribbean","authors":"Wenshan Guo","doi":"10.35248/2252-5211.21.11.422","DOIUrl":"https://doi.org/10.35248/2252-5211.21.11.422","url":null,"abstract":"","PeriodicalId":14393,"journal":{"name":"International Journal of Waste Resources","volume":"12 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86028332","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.35248/2252-5211.21.11.407
A. G. Abadi
Fly ash F had utilized in many fields, cement replacement, geopolymer, and Nano solid material with endless applications. However, due to its low reactivity, slow hydration reaction and low early strength, the usage of Fly F represented low percentage in admixtures less than 25 wt%. Properties can be modified by mechanical activation to achieve higher added value product. The activation depends on the equipment type and its particle size range of milling. The paper reviewed the milling equipment, and tested the particle size, surface properties, and chemical compositions of activated ash. Increasing in the surface area, pozzolana activity and the reduction of crystalline dense layers of fly ash F, leading to microstructure and structural variations which can be invoked to spread the ash industrial applications.
{"title":"Fly Ash F Morphology and Particle Surface Modification via Mechanical Activation","authors":"A. G. Abadi","doi":"10.35248/2252-5211.21.11.407","DOIUrl":"https://doi.org/10.35248/2252-5211.21.11.407","url":null,"abstract":"Fly ash F had utilized in many fields, cement replacement, geopolymer, and Nano solid material with endless applications. However, due to its low reactivity, slow hydration reaction and low early strength, the usage of Fly F represented low percentage in admixtures less than 25 wt%. Properties can be modified by mechanical activation to achieve higher added value product. The activation depends on the equipment type and its particle size range of milling. The paper reviewed the milling equipment, and tested the particle size, surface properties, and chemical compositions of activated ash. Increasing in the surface area, pozzolana activity and the reduction of crystalline dense layers of fly ash F, leading to microstructure and structural variations which can be invoked to spread the ash industrial applications.","PeriodicalId":14393,"journal":{"name":"International Journal of Waste Resources","volume":"46 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76101476","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.35248/2252-5211.21.11.408
M. Faizan
SARS-CoV-2, most commonly known as Coronavirus, was emerged first in the Wuhan city of China in the late 2019 and proved to be an unprecedented threat to the whole world since then. It has truly imposed a restriction on human lives in many countries and has taught us a new way of living. Being the second-most populous country in the world and one of the top contenders in the hierarchy in terms of coronavirus infection, India is facing far extreme consequences of this unrestrained outbreak than many other countries in the same league. Apart from all the other challenges put forward by the existence of SAR-CoV-2, there is a need of proper management to handle the different types of solid waste especially Biomedical Waste (BMW) emerging from different health care facilities, quarantine homes, and centers, that is appearing in a huge amount every day and the possible challenges we are facing while confronting the problem of this waste, that could be a source itself to spread this contagious virus, if not handled and treated properly. In this paper, we have discussed briefly the susceptibility of the virus due to biomedical waste produced daily as a result of curing infected patients. This paper also put across the challenges and the solution to handle this waste in India before it is disposed of.
{"title":"Solid Waste Management in India under Covid 19 Pandemic: Challenges and Solutions","authors":"M. Faizan","doi":"10.35248/2252-5211.21.11.408","DOIUrl":"https://doi.org/10.35248/2252-5211.21.11.408","url":null,"abstract":"SARS-CoV-2, most commonly known as Coronavirus, was emerged first in the Wuhan city of China in the late 2019 and proved to be an unprecedented threat to the whole world since then. It has truly imposed a restriction on human lives in many countries and has taught us a new way of living. Being the second-most populous country in the world and one of the top contenders in the hierarchy in terms of coronavirus infection, India is facing far extreme consequences of this unrestrained outbreak than many other countries in the same league. Apart from all the other challenges put forward by the existence of SAR-CoV-2, there is a need of proper management to handle the different types of solid waste especially Biomedical Waste (BMW) emerging from different health care facilities, quarantine homes, and centers, that is appearing in a huge amount every day and the possible challenges we are facing while confronting the problem of this waste, that could be a source itself to spread this contagious virus, if not handled and treated properly. In this paper, we have discussed briefly the susceptibility of the virus due to biomedical waste produced daily as a result of curing infected patients. This paper also put across the challenges and the solution to handle this waste in India before it is disposed of.","PeriodicalId":14393,"journal":{"name":"International Journal of Waste Resources","volume":"3 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81882032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.35248/2252-5211.21.11.399
N. Campelo, José Silva
This research deals with the use of sludge from the Water Treatment Plant of Ponta do Ismael, in the city of Manaus, state of Amazonas, Brazil, as a filler fraction in hot-mixed asphalt concrete, replacing the mineral filler traditionally used in this region (Portland cement). Five asphalt mixtures were analysed, one as reference (100% Portland cement) and four others, using sludge in the proportions of 25%, 50%, 75% and 100%, by mass, reaching a maximum of 5%, in relation to the total mass of the mixture. Specimens of the five asphalt mixtures were moulded and the results according to Marshall stability, flow value, static indirect tensile strength, resilient modulus and repeated-load indirect fatigue (fatigue life) were analysed. All the physical and mechanical properties of the five mixtures met the specifications of Brazilian standards, having mixtures with sludge showing better performances than the reference mixture.
本研究涉及使用来自巴西亚马逊州马瑙斯市Ponta do Ismael水处理厂的污泥作为热混合沥青混凝土的填料，取代该地区传统使用的矿物填料(波特兰水泥)。分析了五种沥青混合物，一种作为参考(100%波特兰水泥)，另外四种使用污泥的比例分别为25%，50%，75%和100%，按质量计算，最大达到5%，相对于混合物的总质量。对5种沥青混合料进行了模制，并对其马歇尔稳定性、流动值、静态间接抗拉强度、弹性模量和重复载荷间接疲劳(疲劳寿命)进行了分析。五种混合物的所有物理和机械性能均符合巴西标准的规格，与污泥混合的混合物表现出比参考混合物更好的性能。
{"title":"Use of Wastewater Treatment Sludge (WTS) As Filler in Hot-Mixed Asphalt Concrete","authors":"N. Campelo, José Silva","doi":"10.35248/2252-5211.21.11.399","DOIUrl":"https://doi.org/10.35248/2252-5211.21.11.399","url":null,"abstract":"This research deals with the use of sludge from the Water Treatment Plant of Ponta do Ismael, in the city of Manaus, state of Amazonas, Brazil, as a filler fraction in hot-mixed asphalt concrete, replacing the mineral filler traditionally used in this region (Portland cement). Five asphalt mixtures were analysed, one as reference (100% Portland cement) and four others, using sludge in the proportions of 25%, 50%, 75% and 100%, by mass, reaching a maximum of 5%, in relation to the total mass of the mixture. Specimens of the five asphalt mixtures were moulded and the results according to Marshall stability, flow value, static indirect tensile strength, resilient modulus and repeated-load indirect fatigue (fatigue life) were analysed. All the physical and mechanical properties of the five mixtures met the specifications of Brazilian standards, having mixtures with sludge showing better performances than the reference mixture.","PeriodicalId":14393,"journal":{"name":"International Journal of Waste Resources","volume":"43 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81334488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.35248/2252-5211.21.11.428
D. Makris
{"title":"Comparing the Pathogen Numbers in Backyard and Commercial Composts","authors":"D. Makris","doi":"10.35248/2252-5211.21.11.428","DOIUrl":"https://doi.org/10.35248/2252-5211.21.11.428","url":null,"abstract":"","PeriodicalId":14393,"journal":{"name":"International Journal of Waste Resources","volume":"22 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78051228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.35248/2252-5211.21.11.419
Elaine Cristina Bucioli, A. Faria, ra Mara Martins-Franchetti, Lusiane Malafatti Picca, D. Attili-Angelis
The use of synthetic plastics generates environmental impacts due to their low biodegradability and inadequate disposal. One of the alternatives to minimize this problem is the use of biodegradable polymers and/or the production of blends with desired industrial and eco-friendly characteristics. The biodegradation of PHBV (Poly (Hydroxybutyrate-co-Hydroxyvalerate)), LDPE (Low Density Polyethylene) and LDPE / PHBV (70/30) blends in soil column was evaluated using Scanning Electron Microscopy (SEM), Fourier Transform Infrared (FTIR), and mass loss. Through SEM it was possible to observe micro morphological changes on the surface of the PHBV and the blends, in accordance with the mass loss variation. PHBV samples showed a reduction of 43.9 % and the blend had a reduction of 15.7 %, during their biodegradation process. FTIR analysis revealed that the crystallinity of the polymeric materials changed, suggesting the biodegradation of these films. Soil samples were characterized by determination of pH, organic matter (%), moisture (%), and CFU of the microbial community. The blend was susceptible to soil microbial activity, with significant changes in its micro morphology. The used 70/30 ratio (LDPE/ PHBV) showed susceptibility to soil microorganisms, favoring the increase of its microbial community. The use of polymeric blends also favors the reduction of the amount of polymers present in the environment because some of them are biodegradable.
{"title":"Benefits of Disposing Polyhydroxybutyrate-Co-Hydroxyvalerate (PHBV) Blends in Soil, as Alternative for Low Density Polyethylene","authors":"Elaine Cristina Bucioli, A. Faria, ra Mara Martins-Franchetti, Lusiane Malafatti Picca, D. Attili-Angelis","doi":"10.35248/2252-5211.21.11.419","DOIUrl":"https://doi.org/10.35248/2252-5211.21.11.419","url":null,"abstract":"The use of synthetic plastics generates environmental impacts due to their low biodegradability and inadequate disposal. One of the alternatives to minimize this problem is the use of biodegradable polymers and/or the production of blends with desired industrial and eco-friendly characteristics. The biodegradation of PHBV (Poly (Hydroxybutyrate-co-Hydroxyvalerate)), LDPE (Low Density Polyethylene) and LDPE / PHBV (70/30) blends in soil column was evaluated using Scanning Electron Microscopy (SEM), Fourier Transform Infrared (FTIR), and mass loss. Through SEM it was possible to observe micro morphological changes on the surface of the PHBV and the blends, in accordance with the mass loss variation. PHBV samples showed a reduction of 43.9 % and the blend had a reduction of 15.7 %, during their biodegradation process. FTIR analysis revealed that the crystallinity of the polymeric materials changed, suggesting the biodegradation of these films. Soil samples were characterized by determination of pH, organic matter (%), moisture (%), and CFU of the microbial community. The blend was susceptible to soil microbial activity, with significant changes in its micro morphology. The used 70/30 ratio (LDPE/ PHBV) showed susceptibility to soil microorganisms, favoring the increase of its microbial community. The use of polymeric blends also favors the reduction of the amount of polymers present in the environment because some of them are biodegradable.","PeriodicalId":14393,"journal":{"name":"International Journal of Waste Resources","volume":"23 1","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86368998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.35248/2252-5211.20.10.373
A. Vavouraki
Adsorption experiments of polyphenols from olive mill wastewater (OMW) using a cross-linked styrene– divinylbenzene polymer namely FPX 66 as a sorbent have been conducted. In particular the process of adsorption of phenolic compounds and carbohydrate derived from OMW by FPX 66 was rapid. A 68 and 60% reduction of polyphenols and carbohydrates, respectively was observed within the first 1 h. FPX 66 resin adsorption capacity increased by increasing polyphenol concentration values. At OMW-effluent-pH below 7.5 polyphenol removal from FPX 66 was high (77%) and for pH greater than 9.0 decreased (40%). Adsorption kinetics and equilibrium studies were carried out, fitting the equilibrium data to both Langmuir and Freundlich models. Batch adsorption models, based on the assumption of the pseudo-first-order, pseudo-second-order and intraparticle diffusion mechanism showed that kinetic data of the adsorption of polyphenols derived from OMW on FPX 66 resin followed the pseudosecond- order than the pseudo-first-order and intraparticle diffusion. Regeneration studies showed that low pH value was efficient for the recovery of phenolic compounds implying that the main mechanism of regeneration might be the chemisorption. These results of adsorption kinetics and equilibrium studies indicate the efficiency of FPX 66 resin as polyphenol sorbent from OMW effluent.
{"title":"Removal of Polyphenols from Olive Mill Wastewater by FPX 66 Resin: Part II. Adsorption Kinetics and Equilibrium Studies","authors":"A. Vavouraki","doi":"10.35248/2252-5211.20.10.373","DOIUrl":"https://doi.org/10.35248/2252-5211.20.10.373","url":null,"abstract":"Adsorption experiments of polyphenols from olive mill wastewater (OMW) using a cross-linked styrene– divinylbenzene polymer namely FPX 66 as a sorbent have been conducted. In particular the process of adsorption of phenolic compounds and carbohydrate derived from OMW by FPX 66 was rapid. A 68 and 60% reduction of polyphenols and carbohydrates, respectively was observed within the first 1 h. FPX 66 resin adsorption capacity increased by increasing polyphenol concentration values. At OMW-effluent-pH below 7.5 polyphenol removal from FPX 66 was high (77%) and for pH greater than 9.0 decreased (40%). Adsorption kinetics and equilibrium studies were carried out, fitting the equilibrium data to both Langmuir and Freundlich models. Batch adsorption models, based on the assumption of the pseudo-first-order, pseudo-second-order and intraparticle diffusion mechanism showed that kinetic data of the adsorption of polyphenols derived from OMW on FPX 66 resin followed the pseudosecond- order than the pseudo-first-order and intraparticle diffusion. Regeneration studies showed that low pH value was efficient for the recovery of phenolic compounds implying that the main mechanism of regeneration might be the chemisorption. These results of adsorption kinetics and equilibrium studies indicate the efficiency of FPX 66 resin as polyphenol sorbent from OMW effluent.","PeriodicalId":14393,"journal":{"name":"International Journal of Waste Resources","volume":"1 1","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76819208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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