Water Practice and Technology最新文献_第5页

UV/periodate and UV/chlorine for dye degradation and real wastewater treatment: a comparative study UV/高碘酸盐和UV/氯降解染料及实际废水处理的比较研究

Water Practice and Technology Pub Date : 2023-10-01 DOI: 10.2166/wpt.2023.160

Soheila Madihibidgoli, Fatemeh Asghari, Sahel Cheraghi, Hadis Hamidinia, Elnaz Shagerdi, Sahar Asadnezhad

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Valorization of lignocellulosic solid waste obtained from essential oil industry for bio-oil production and dye removal 从精油工业中获得的木质纤维素固体废物的增值用于生物油生产和染料去除

Water Practice and Technology Pub Date : 2023-10-01 DOI: 10.2166/wpt.2023.154

Sourodipto Modak, Priyanka Katiyar, Sanjeev Yadav, Annapurna Hans

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Innovating superparamagnetic chitosan hybrid nanoparticles for a high-efficiency separation of oil from oil–water emulsions 创新的超顺磁性壳聚糖杂化纳米颗粒用于油与油水乳液的高效分离

Water Practice and Technology Pub Date : 2023-10-01 DOI: 10.2166/wpt.2023.158

Anup Kumar Bairagi, Soumya Sanjeeb Mohapatra, Abanti Sahoo, Saurabh Chokhoba Tembhurne

{"title":"Innovating superparamagnetic chitosan hybrid nanoparticles for a high-efficiency separation of oil from oil–water emulsions","authors":"Anup Kumar Bairagi, Soumya Sanjeeb Mohapatra, Abanti Sahoo, Saurabh Chokhoba Tembhurne","doi":"10.2166/wpt.2023.158","DOIUrl":"https://doi.org/10.2166/wpt.2023.158","url":null,"abstract":"Abstract In an era marked by rapid industrialization and heightened automobile usage, the demand for crude oil has surged, inducing ecological degradation and resource depletion. Effective management of intricate oily wastewater presents a formidable challenge. While diverse methods like gravity separation, centrifugation, and membrane techniques are employed for oil-water separation, gravity separation is the prevailing choice, yet limited to unstable emulsions. These methods often involve toxic substances harmful to marine life. Our research focuses on separating oil microemulsions in aqueous solutions. This study explores the application of superparamagnetic chitosan coagulants, revealing an optimal 10 ml dosage for peak efficiency. Aiming for rapid oil separation, we achieved a breakthrough with just 30 minutes, establishing a new benchmark. Rigorous VSM testing solidified the particles' magnetic capabilities, augmented through size reduction. Notably, at a 15% oil concentration, a remarkable 99.26% efficiency in oil separation was achieved, offering potential in microbiology, medicine, and drug delivery systems.","PeriodicalId":23794,"journal":{"name":"Water Practice and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134978327","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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Evaluation of adsorption potential of illite/quartz/kaolinite/montmorillonite for Cr(VI), Ni(II), and Cu(II) ions and modeling of experimental results by artificial neural networks 伊利石/石英/高岭石/蒙脱土对Cr(VI)、Ni(II)和Cu(II)离子的吸附电位评价及实验结果的人工神经网络建模

Water Practice and Technology Pub Date : 2023-10-01 DOI: 10.2166/wpt.2023.134

Kavitha Balasubramani, D. Sarala Thambavani

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Model parameter sensitivity and identifiability for urban river water quality: impact of domestic wastewater discharges from on-site treatment facilities 城市河流水质模型参数敏感性和可辨识性:现场处理设施排放生活污水的影响

Water Practice and Technology Pub Date : 2023-10-01 DOI: 10.2166/wpt.2023.166

Yoshihiko Inagaki, Elias Habineza, Hieu Minh Dang, Rodgers Makwinja, Masahito Komori, Yutaka Sakakibara

{"title":"Model parameter sensitivity and identifiability for urban river water quality: impact of domestic wastewater discharges from on-site treatment facilities","authors":"Yoshihiko Inagaki, Elias Habineza, Hieu Minh Dang, Rodgers Makwinja, Masahito Komori, Yutaka Sakakibara","doi":"10.2166/wpt.2023.166","DOIUrl":"https://doi.org/10.2166/wpt.2023.166","url":null,"abstract":"Abstract River water quality degradation is a risk to human health. Hence, many water quality models have been developed to predict the future states of water bodies and understand how the current water treatment systems will respond to future pollution loads and climatic drivers. A Japanese river was evaluated with the River Water Quality Model No.1 (RWQM1), and parameter sensitivity and identifiability analyses were executed on the model output using parameter sensitivity ranking, collinearity index, and Fisher Information Matrix-derived criterion. Among RWQM1 kinetic parameters, those related to hydrolysis, growth of aerobicheterotrophs, and first-stage nitrifiers were the most influential. Reactive soluble organic substances included in untreated gray waters, in addition to a prevalence ratio of the most advanced on-site treatment facility, strongly contributed to the model output variability. A remediation analysis revealed that a renewal to the most advanced on-site treatment facility by 20% increment was almost equivalent to the 70% decrease in the effluent concentration from an on-site treatment facility producing the highest pollutant load in terms of a BOD concentration decrease in the stream. This study provided baseline data assisting in policy implementation regarding the management of effluents from on-site treatment facilities.","PeriodicalId":23794,"journal":{"name":"Water Practice and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135809737","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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Sol–gel catalysts immobilized on stainless steel meshes for Ba2+ removal in a continuous flow process: an experimental design 不锈钢网固载溶胶-凝胶催化剂在连续流动过程中去除Ba2+的实验设计

Water Practice and Technology Pub Date : 2023-10-01 DOI: 10.2166/wpt.2023.156

Lisandra N. Bueno, Michel Zampieri Fidelis, Eduardo Abreu, Angelo Marcelo Tusset, Giane Gonçalves Lenzi

{"title":"Sol–gel catalysts immobilized on stainless steel meshes for Ba2+ removal in a continuous flow process: an experimental design","authors":"Lisandra N. Bueno, Michel Zampieri Fidelis, Eduardo Abreu, Angelo Marcelo Tusset, Giane Gonçalves Lenzi","doi":"10.2166/wpt.2023.156","DOIUrl":"https://doi.org/10.2166/wpt.2023.156","url":null,"abstract":"Abstract This study describes the use of a continuous flow system for photocatalytic reactions employing a TiO2 sol–gel structured catalyst. The catalyst was immobilized on various stainless steel meshes to investigate the barium(II) removal. To verify its photocatalytic activity, batch tests were carried out and the results were compared to the commercial catalyst P25. Effects of thermal treatment on the structured catalyst were investigated. The continuous flow photocatalytic tests were conducted under different experimental conditions through an experimental design to verify the effect of the parameters (pH and volume flow). The results of the batch tests indicated that the TiO2 sol–gel catalyst showed very similar activity to the TiO2 P25 when used in powder suspension (32% reduction of Ba2+). In the continuous flow process, maximum adhesion of catalysts on meshes was found at a calcination temperature of 623 K. The experimental design indicated the pH as a significant parameter in the studied conditions. It was observed that at pH levels close to 7, also indicated by the study of the zero charge point and lower flow rates, it was possible to obtain ∼20% removal of Ba2+ ions, in a continuous flow reactor with a residence time of 83 min.","PeriodicalId":23794,"journal":{"name":"Water Practice and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134937022","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

Novel solar simulated photocatalytic heterolysis of pharmaceutical wastewater via slag nanocomposite immobilization: optimization using response surface methodology 基于炉渣纳米复合材料固定化的新型太阳能模拟光催化制药废水异分解:响应面法优化

Water Practice and Technology Pub Date : 2023-10-01 DOI: 10.2166/wpt.2023.152

Kingsley Safo, Hussien Noby, Masatoshi Mitsuhara, Hiroshi Naragino, Ahmed H. El-Shazly

{"title":"Novel solar simulated photocatalytic heterolysis of pharmaceutical wastewater via slag nanocomposite immobilization: optimization using response surface methodology","authors":"Kingsley Safo, Hussien Noby, Masatoshi Mitsuhara, Hiroshi Naragino, Ahmed H. El-Shazly","doi":"10.2166/wpt.2023.152","DOIUrl":"https://doi.org/10.2166/wpt.2023.152","url":null,"abstract":"Abstract This study converted slag from the steelmaking industry into an Fe2O3-rich nanocomposite using solvothermal technique for photodegradation of pharmaceutical wastewater in an immobilized mode. The nanocomposite was characterized using XRF, SEM, EDX, TEM, FTIR, XRD, and UV–Vis spectrometer. The XRF analysis result reveals a significant increase in the weight percent of Fe2O3 and SiO2, with a decrease in CaO content. The SEM images revealed the spherical and heterogeneous nature of the nanocomposite in shape and structure, while the FTIR confirms the increase in the vibration band of Si–O–Si and Fe–O with a reduction in the wide stretch mode of Ca–O. The XRD result illustrated the crystalline peak of Fe2O3 with a nanoparticle crystal size of 15.17 nm. The slag nanocomposite was used for the photodegradation of paracetamol. The optimum operating parameters were obtained using response surface methodology at an R2 value of 0.99 and p-value &lt; 0.05. The degradation efficiency obtained at the optimum value was 96.96%. The degradation efficiency of the fifth repeated cycle of the immobilized nanocomposite was 77.89%. The degradation mechanism revealed that OH• radical was the major species of the degradation process. This work showed that slag nanocomposite might be effectively used for pharmaceutical wastewater treatment.","PeriodicalId":23794,"journal":{"name":"Water Practice and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134934695","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

Corrigendum: Water Practice and Technology 1 April 2023; 18 (4): 947–966: Synthesis of activated carbon from banana peels for dye removal of an aqueous solution in textile industries: optimization, kinetics, and isotherm aspects. Talbachew Tadesse Nadew, Mestawot Keana, Tsegaye Sisay, Belay Getye, Nigus Gabbiye Habtu. https://doi.org/10.2166/wpt.2023.042 勘误:水的实践和技术2023年4月1日;纺织工业用香蕉皮合成活性炭:优化、动力学和等温线方面。Talbachew Tadesse nadu, Mestawot Keana, Tsegaye Sisay, Belay Getye, Nigus Gabbiye Habtu。https://doi.org/10.2166/wpt.2023.042

Water Practice and Technology Pub Date : 2023-10-01 DOI: 10.2166/wpt.2023.149

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Performance evaluation of water supply distribution system: a case study of Muke Turi town, Oromia region, Ethiopia 供水分配系统绩效评价——以埃塞俄比亚奥罗米亚地区Muke Turi镇为例

Water Practice and Technology Pub Date : 2023-09-27 DOI: 10.2166/wpt.2023.150

Solomon Ayele Negese, Habtamu Hailu Kebede

{"title":"Performance evaluation of water supply distribution system: a case study of Muke Turi town, Oromia region, Ethiopia","authors":"Solomon Ayele Negese, Habtamu Hailu Kebede","doi":"10.2166/wpt.2023.150","DOIUrl":"https://doi.org/10.2166/wpt.2023.150","url":null,"abstract":"Abstract Adequate and sustainable supply of potable water in urban areas of developing countries is often a challenge. This study assessed the performance of the water supply system in Muke Turi town, Oromia, Ethiopia. The Water Geospatial Engineering Modeling System (WaterGEMS) model was used for hydraulic analysis of the distribution network. The water losses were determined by different indicators including non-revenue water (NRW), losses per pipe connection (LPC), losses per main pipe length (LMPL), unavoidable annual real losses (UARL), and infrastructure leakage index (ILI). The water supply coverage of the town was found as 43.34%, which is considerably low. From the hydraulic analysis, the velocity of flow in 54.2% of the pipe and pressure at 60% of the nodes were found within the recommended ranges. The NRW was estimated at 37.61%, which is above the acceptable limit. Of which, the real losses are the major ones with 37.14%. Moreover, the LPC and LMPL were found to be 298 l/d and 29,709 l/km/d, respectively, which are again above the recommended limits. Based on ILI, the annual real losses were estimated to be 4.31 times the UARL. Finally, it was concluded that access to water in the town is inadequate which is exacerbated by high losses.","PeriodicalId":23794,"journal":{"name":"Water Practice and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135535952","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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Development of flood inundation maps for the Chaliyar Basin, Kerala under climate change scenarios 气候变化情景下喀拉拉邦Chaliyar盆地洪水淹没图的开发

Water Practice and Technology Pub Date : 2023-09-27 DOI: 10.2166/wpt.2023.148

Nagireddy Venkata Jayasimha Reddy, R. Arunkumar

{"title":"Development of flood inundation maps for the Chaliyar Basin, Kerala under climate change scenarios","authors":"Nagireddy Venkata Jayasimha Reddy, R. Arunkumar","doi":"10.2166/wpt.2023.148","DOIUrl":"https://doi.org/10.2166/wpt.2023.148","url":null,"abstract":"Abstract Floods are one of the extreme events and widespread natural disasters that significantly affect the civil infrastructure and livelihoods of people. Recently, climate change has significantly altered the rainfall pattern and increased flood events worldwide, especially in India. Therefore, it has become essential to map potential flood inundation regions for various future extreme events to develop appropriate flood mitigation and management strategies. This study aims to develop flood inundation maps for different return periods under climate change scenarios for the Chaliyar basin, Kerala. The Hydrologic Engineering Center-Hydrologic Modelling System model was used to simulate streamflow under SSP2-4.5 and SSP5-8.5 scenarios. Later, flood inundation maps were developed for different return periods using the Hydrologic Engineering Center-River Analysis System model. It was observed that for the near future (2031–2040) and far future (2071–2080), simulated streamflow is higher for SSP5-8.5. However, the mid-future (2051–2060) resulted in a higher streamflow for SSP2-4.5 than the SSP5-8.5 scenario. A maximum of 19.52 m of water surface elevation occurred at Kizhupparamba during mid-future for SSP2-4.5, followed by 18.38 m of water surface elevation at Cheekode during the near future for SSP5-8.5, for 100-year return period events. This study showed that hydrologic and hydraulic models could be effectively combined for mapping the flood inundation areas.","PeriodicalId":23794,"journal":{"name":"Water Practice and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135536148","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