Water Practice & Technology最新文献_第9页

Mechanism and performances of methyl orange and Congo red adsorption by MnO2–PVP composite MnO2-PVP 复合材料吸附甲基橙和刚果红的机理与性能

Water Practice & Technology Pub Date : 2024-02-13 DOI: 10.2166/wpt.2024.032

Afsar Khan, Zhengwei Han, Yu Xie, Chenquan Ni, Muhammad Arif

{"title":"Mechanism and performances of methyl orange and Congo red adsorption by MnO2–PVP composite","authors":"Afsar Khan, Zhengwei Han, Yu Xie, Chenquan Ni, Muhammad Arif","doi":"10.2166/wpt.2024.032","DOIUrl":"https://doi.org/10.2166/wpt.2024.032","url":null,"abstract":"\u0000 \u0000 Azo dyes are commonly used in textile industries; however, when these dyes cross the permissible limit set by the World Health Organization, they produce many health issues related to the brain, liver, kidneys, respiration, and sexual system. Herein, polyvinyl pyrrolidone (PVP)-supported manganese oxide (MnO2) was studied for azo dye removal from an aqueous medium. The adsorption mechanism study demonstrated that the dye adsorption by MnO2–PVP composite was not only due to the electrostatic force of attraction but also involved the ion exchange amid the hydroxide group and dye molecules. The surface area of the composite (120 m2 g−1) was larger than that of metal oxide (102 m2 g−1). The point of zero charge and surface area were improved from 5.2 and 102 to 5.6 and 120 m2 g−1, respectively. The dye removal capacity of MnO2–PVP composite was significantly higher than that of plain MnO2. The film diffusion control adsorption kinetic mechanism and the kinetic data were well fitted to the pseudo-second-order equation. Experiments were conducted as a function of initial dye concentration (5–200 mg L−1), pH (3–10), temperature (298–328 K), and adsorbent dosage (0.05–0.4 g) in batch adsorption systems. The thermodynamic investigations confirm that the dye adsorption process was endothermic in nature.","PeriodicalId":104096,"journal":{"name":"Water Practice & Technology","volume":"118 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139840654","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}

引用次数: 0

Mechanism and performances of methyl orange and Congo red adsorption by MnO2–PVP composite MnO2-PVP 复合材料吸附甲基橙和刚果红的机理与性能

Water Practice & Technology Pub Date : 2024-02-13 DOI: 10.2166/wpt.2024.032

Afsar Khan, Zhengwei Han, Yu Xie, Chenquan Ni, Muhammad Arif

{"title":"Mechanism and performances of methyl orange and Congo red adsorption by MnO2–PVP composite","authors":"Afsar Khan, Zhengwei Han, Yu Xie, Chenquan Ni, Muhammad Arif","doi":"10.2166/wpt.2024.032","DOIUrl":"https://doi.org/10.2166/wpt.2024.032","url":null,"abstract":"\u0000 \u0000 Azo dyes are commonly used in textile industries; however, when these dyes cross the permissible limit set by the World Health Organization, they produce many health issues related to the brain, liver, kidneys, respiration, and sexual system. Herein, polyvinyl pyrrolidone (PVP)-supported manganese oxide (MnO2) was studied for azo dye removal from an aqueous medium. The adsorption mechanism study demonstrated that the dye adsorption by MnO2–PVP composite was not only due to the electrostatic force of attraction but also involved the ion exchange amid the hydroxide group and dye molecules. The surface area of the composite (120 m2 g−1) was larger than that of metal oxide (102 m2 g−1). The point of zero charge and surface area were improved from 5.2 and 102 to 5.6 and 120 m2 g−1, respectively. The dye removal capacity of MnO2–PVP composite was significantly higher than that of plain MnO2. The film diffusion control adsorption kinetic mechanism and the kinetic data were well fitted to the pseudo-second-order equation. Experiments were conducted as a function of initial dye concentration (5–200 mg L−1), pH (3–10), temperature (298–328 K), and adsorbent dosage (0.05–0.4 g) in batch adsorption systems. The thermodynamic investigations confirm that the dye adsorption process was endothermic in nature.","PeriodicalId":104096,"journal":{"name":"Water Practice & Technology","volume":"127 28","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139780960","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}

引用次数: 0

Research progress of persistent organic pollutants in water: classification, sources, potential risks, and treatment approaches 水中持久性有机污染物的研究进展：分类、来源、潜在风险和处理方法

Water Practice & Technology Pub Date : 2024-02-13 DOI: 10.2166/wpt.2024.031

Aindrila Mandal, P. Senthil Kumar, C. S. Poorva, Lohita Srinivasa Raju, Senthil Rathi Balasubramani, G. Rangasamy

引用次数: 0

Photobleaching of face mask dyes BB and CR using novel BPPNTs-V2O5 nanotube composites: DFT studies of self-assembly and nanoclusters 使用新型 BPPNTs-V2O5 纳米管复合材料对面罩染料 BB 和 CR 进行光漂白：自组装和纳米团簇的 DFT 研究

Water Practice & Technology Pub Date : 2024-02-13 DOI: 10.2166/wpt.2024.026

K. Sivasankari, R. Naveenkumar, B. Karthikeyan

引用次数: 0

Research progress of persistent organic pollutants in water: classification, sources, potential risks, and treatment approaches 水中持久性有机污染物的研究进展：分类、来源、潜在风险和处理方法

Water Practice & Technology Pub Date : 2024-02-13 DOI: 10.2166/wpt.2024.031

Aindrila Mandal, P. Senthil Kumar, C. S. Poorva, Lohita Srinivasa Raju, Senthil Rathi Balasubramani, G. Rangasamy

引用次数: 0

From drainage to resource: a practice approach to reuse greywater for household irrigation purposes 从排水到资源：将中水回用于家庭灌溉的实践方法

Water Practice & Technology Pub Date : 2024-02-13 DOI: 10.2166/wpt.2024.033

Anh Dao Ngo Ho, C. P. Leo, Anh Tuan Ta, Thanh Quang Nguyen

{"title":"From drainage to resource: a practice approach to reuse greywater for household irrigation purposes","authors":"Anh Dao Ngo Ho, C. P. Leo, Anh Tuan Ta, Thanh Quang Nguyen","doi":"10.2166/wpt.2024.033","DOIUrl":"https://doi.org/10.2166/wpt.2024.033","url":null,"abstract":"\u0000 \u0000 The United Nations indicates that available freshwater resources will decrease significantly due to pollution growth and urbanization; two-thirds of the world's population may face water shortages by 2030. Extended use of greywater is one of the main alternatives for reducing potable water consumption in urban areas. Recently, the reuse of treated greywater for home gardens, peri-urban agriculture, and landscaping has become a widespread concern in many developing countries. This paper presents a study on a low-cost system that can perform greywater treatment for household use. This treatment system employed physical filtration by ceramic filters, quartz gravel, hollow fiber membrane, and UV disinfection. Three greywater samples collected from the kitchen, washing basins, and bathroom were investigated. The operation process determines the system's effectiveness by considering turbidity, coliform, Biochemical Oxygen Demand (BOD5), and Chemical Oxygen Demand (COD) concentration of the inlet and outlet water. As a result, high removal efficiency (i.e., >60%) could be obtained for each investigated parameter. Results also showed that grey water generated from washing basins has the highest potential for reuse since the water quality after treatment satisfies the water reuse standards for household irrigation. The findings encourage further exploration and implementation of greywater reuse practices.","PeriodicalId":104096,"journal":{"name":"Water Practice & Technology","volume":"62 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139781551","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}

引用次数: 0

From drainage to resource: a practice approach to reuse greywater for household irrigation purposes 从排水到资源：将中水回用于家庭灌溉的实践方法

Water Practice & Technology Pub Date : 2024-02-13 DOI: 10.2166/wpt.2024.033

Anh Dao Ngo Ho, C. P. Leo, Anh Tuan Ta, Thanh Quang Nguyen

{"title":"From drainage to resource: a practice approach to reuse greywater for household irrigation purposes","authors":"Anh Dao Ngo Ho, C. P. Leo, Anh Tuan Ta, Thanh Quang Nguyen","doi":"10.2166/wpt.2024.033","DOIUrl":"https://doi.org/10.2166/wpt.2024.033","url":null,"abstract":"\u0000 \u0000 The United Nations indicates that available freshwater resources will decrease significantly due to pollution growth and urbanization; two-thirds of the world's population may face water shortages by 2030. Extended use of greywater is one of the main alternatives for reducing potable water consumption in urban areas. Recently, the reuse of treated greywater for home gardens, peri-urban agriculture, and landscaping has become a widespread concern in many developing countries. This paper presents a study on a low-cost system that can perform greywater treatment for household use. This treatment system employed physical filtration by ceramic filters, quartz gravel, hollow fiber membrane, and UV disinfection. Three greywater samples collected from the kitchen, washing basins, and bathroom were investigated. The operation process determines the system's effectiveness by considering turbidity, coliform, Biochemical Oxygen Demand (BOD5), and Chemical Oxygen Demand (COD) concentration of the inlet and outlet water. As a result, high removal efficiency (i.e., >60%) could be obtained for each investigated parameter. Results also showed that grey water generated from washing basins has the highest potential for reuse since the water quality after treatment satisfies the water reuse standards for household irrigation. The findings encourage further exploration and implementation of greywater reuse practices.","PeriodicalId":104096,"journal":{"name":"Water Practice & Technology","volume":"426 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139841382","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}

引用次数: 0

Compounding morphometric parameters for prioritization of vulnerable watersheds for land restoration planning in Beas sub basin using geospatial techniques 利用地理空间技术复合形态计量参数，确定易受影响流域的优先次序，以便在比斯河流域进行土地恢复规划

Water Practice & Technology Pub Date : 2024-02-12 DOI: 10.2166/wpt.2024.028

Sunil Nehra, K. Sur, V. Verma, B. Pateriya

{"title":"Compounding morphometric parameters for prioritization of vulnerable watersheds for land restoration planning in Beas sub basin using geospatial techniques","authors":"Sunil Nehra, K. Sur, V. Verma, B. Pateriya","doi":"10.2166/wpt.2024.028","DOIUrl":"https://doi.org/10.2166/wpt.2024.028","url":null,"abstract":"\u0000 \u0000 The Beas sub basin falling under Indus basin in northern India is experiencing notable changes due to human interventions since the rise of civilization in the Indus valley. The incessant anthropogenic pressure, infrastructural development, deforestation and encroachment have made the sub basin more vulnerable to land degradation, erosion and landslides. Thus this study attempts to classify the watersheds based on morphometric characteristics and prioritize the watersheds for sub basin management as a whole so that restoration process can concentrated on the high risk prone watersheds. In this study ALOS PALSAR DEM of 12.5 meters was used to extract the drainage network, watershed, sub basin and basin boundary complemented by topographic and hydrological maps. The study analyses 49 morphometric parameters under the categories like linear, areal and relief characteristics. The result classifies the erosion capacity of total 4126 streams with the cumulative length of 12,287.51 km over a sub basin area of 19,338.8 Km2. The morphometric parameters were integrated for each watershed and compounded factor was given to rank vulnerability in GIS environment. The results depicted that sub watershed number 2, 6, 12, 16 were high risk prone and underlined as area which requires immediate attention for soil water conservation measure.","PeriodicalId":104096,"journal":{"name":"Water Practice & Technology","volume":"19 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139784979","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}

引用次数: 0

Iron, manganese, and lead contamination in groundwater of Bangladesh: a review 孟加拉国地下水中的铁、锰和铅污染：综述

Water Practice & Technology Pub Date : 2024-02-12 DOI: 10.2166/wpt.2024.030

Md. Zahidul Islam, M. Mostafa

{"title":"Iron, manganese, and lead contamination in groundwater of Bangladesh: a review","authors":"Md. Zahidul Islam, M. Mostafa","doi":"10.2166/wpt.2024.030","DOIUrl":"https://doi.org/10.2166/wpt.2024.030","url":null,"abstract":"\u0000 Groundwater is a vital source of safe drinking water in Bangladesh and most South Asian countries. The study aimed to identify the sources and assess the contamination of Fe, Mn, and Pb in groundwater. The study considered published articles, reports, and data repositories of concerned departments over the past two decades using various search engines, including Web of Science, Scopus, Science Direct, Google Scholar, etc. The study results showed the concentrations of Fe, Mn, and Pb in groundwater exceeded 55.93, 75.44, and 37.50%, respectively, of different standards, including the World Health Organization and United Nations Environmental Protection Agency. The concentrations of Fe, Mn, and Pb ranged from 0.003 to 16.6, 0.00063 to 3.11, and 0.0006 to 3.01 mg/L, respectively, and followed the order Fe > Mn > Pb in the groundwater of Bangladesh. Sources of Fe and Mn in groundwater are mostly geogenic in origin, while Pb contamination in groundwater is anthropogenic and derives from industry dust piles, vehicle exhaust discharge, lead pipes, faucets, fixtures, and batteries. The higher levels of heavy metals in groundwater cause health and environmental hazards. The study recommended that the higher concentrations of Fe, Mn, and Pb in groundwater make it unsuitable for drinking purposes and should be treated before consumption.","PeriodicalId":104096,"journal":{"name":"Water Practice & Technology","volume":"70 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139844091","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}

引用次数: 0

Removal of pollutants from landfill leachate by adsorption with nano zero-valent iron particles: adsorption isotherms and kinetic studies 用纳米零价铁颗粒吸附去除垃圾填埋场渗滤液中的污染物：吸附等温线和动力学研究

Water Practice & Technology Pub Date : 2024-02-12 DOI: 10.2166/wpt.2024.029

S. Göçer, Z. Zaimoğlu, Kevser Cirik

{"title":"Removal of pollutants from landfill leachate by adsorption with nano zero-valent iron particles: adsorption isotherms and kinetic studies","authors":"S. Göçer, Z. Zaimoğlu, Kevser Cirik","doi":"10.2166/wpt.2024.029","DOIUrl":"https://doi.org/10.2166/wpt.2024.029","url":null,"abstract":"\u0000 Nano zero-valent iron (nZVI) is an effective adsorbent for removing various organic and inorganic contaminants. In this study, nZVI particles, synthesized in our previous work, were used for landfill leachate pretreatment. The adsorption performance was tested at various adsorbent concentrations (50–500 mg Fe0/L), pH (3–8), and contact times (15–330 min). Chemical oxygen demand, dissolved organic carbon (DOC), nitrate (NO3-), and ammonium (NH4+) removal efficiency were approximately 75%, 60, 57, and 33%, respectively. The obtained data were fitted well by the Langmuir isotherm and adsorption kinetics of pseudo-second-order equations (R2 > 0.9). The adsorption capacities were found to be 29.62, 21.01, and 3.12 mg/g for DOC, NH4+, and NO3−, respectively, at Fe0 concentration of 50 mg Fe0/L, pH of 8, and contact time of 120 min, which was determined as the effective operational conditions in this work. The obtained removal levels were higher compared to the conventional activated carbon adsorption (72.3%). Results suggest that nZVI has the potential to create effective adsorption relevant to landfill leachate pretreatment, thereby providing more efficient biological treatment by decreasing important pollutants before biological treatment.","PeriodicalId":104096,"journal":{"name":"Water Practice & Technology","volume":"58 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139844648","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}

引用次数: 0

Water Practice &amp; Technology最新文献

Water Practice & Technology最新文献