Water Practice & Technology最新文献_第2页

Study of novel Zn-MOF-II modified polymeric membrane in wastewater treatment containing oily waste and humic acid (NOM) 新型 Zn-MOF-II 改性聚合物膜在含油废物和腐殖酸（NOM）废水处理中的应用研究

Water Practice & Technology Pub Date : 2024-07-08 DOI: 10.2166/wpt.2024.178

Sapna Gawali, Ajay V. Gawali, Nagarjuna Reddy, P. S. Reddy, S. Dharaskar, Snigdha Khuntia, M. Sinha, Surendra Sasi Kumar Jampa

{"title":"Study of novel Zn-MOF-II modified polymeric membrane in wastewater treatment containing oily waste and humic acid (NOM)","authors":"Sapna Gawali, Ajay V. Gawali, Nagarjuna Reddy, P. S. Reddy, S. Dharaskar, Snigdha Khuntia, M. Sinha, Surendra Sasi Kumar Jampa","doi":"10.2166/wpt.2024.178","DOIUrl":"https://doi.org/10.2166/wpt.2024.178","url":null,"abstract":"\u0000 \u0000 The prime objective of the present work was to synthesise the polymeric membrane with Zn-MOF-II nanoparticles using the phase inversion method to purify oily wastewater and NOM. The dead-end filtration system was utilised to analyse the performance of fabricated membranes (without and with Zn-MOF-II), various feeds of 100 ppm concentration used, such as organic pollutants and oil effluent at 250 kPa and atmospheric temperature conditions. The following study involves the compaction factor, pure water flux, all mixed matrix membrane permeability, humic acid rejection, and oil–water emulsion rejection, contact angle, and liquid–liquid displacement porosimetry (LLDP). Scanning electron microscopy (SEM) and Fourier transforms infrared spectroscopy-attenuated total reflection (FTIR-ATR) goniometer were used to characterise the polymeric membranes. The FTIR-ATR spectra of the modified membrane exhibit a characteristic peak between 2,900 and 3,000 cm−1 associated with the presence of the –COOH group. The nanoparticles and polymer matrix were well compatible, as evidenced by SEM images of the polymeric membrane containing Zn-MOF-II nanoparticles. The maximum value of percentage rejection of oily wastewater (above 88.89%) and humic acid (above 86.88%) was obtained for the polymeric membrane containing Zn-MOF-II nanoparticles.","PeriodicalId":104096,"journal":{"name":"Water Practice & Technology","volume":"119 49","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141667837","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

Overview of the low-cost technologies for household water treatment in developing countries 发展中国家家庭水处理低成本技术概览

Water Practice & Technology Pub Date : 2024-07-08 DOI: 10.2166/wpt.2024.177

O. Mdee, Amina Lwasa, N. Sadiki

引用次数: 0

Multiple conceptual hydrological models for simulating streamflow in data-sparse river basins: an application of the Vietnamese Cau river basin 用于模拟数据稀缺流域流量的多种概念水文模型：越南考河流域的应用

Water Practice & Technology Pub Date : 2024-07-08 DOI: 10.2166/wpt.2024.181

Thach Tran Tuan

{"title":"Multiple conceptual hydrological models for simulating streamflow in data-sparse river basins: an application of the Vietnamese Cau river basin","authors":"Thach Tran Tuan","doi":"10.2166/wpt.2024.181","DOIUrl":"https://doi.org/10.2166/wpt.2024.181","url":null,"abstract":"\u0000 \u0000 Streamflow plays a critical role in water resources management, requiring precise estimation, especially in data-sparse river basins. In this study, multiple hydrological models (HYMOD, GR4J, and NAM) are presented and employed to simulate streamflow in the data-sparse Vietnamese Cau river basin at the Thac Rieng station, providing an illustrative example. Four indices named Nash–Sutcliffe efficiency (NSE), correlation coefficient (r), Kling–Gupta efficiency (KGE), and root mean square error (RMSE) are implemented to quantitatively assess model performance. Firstly, using the available hydrometeorological data from 1 January 1960 to 31 December 1981, parameters in each model are determined using the Shuffled Complex Evolution University of Arizona optimization method. The results show that three models reproduced acceptably observed streamflow, with NSE ranging from 0.65 to 0.75, r and KGE varying between 0.72 and 0.87, and RMSE is less than 6.5% of the observed streamflow magnitude. Secondly, the NAM model was found as the most suitable for simulating observed streamflow in the studied river basin. Thirdly, three models were applied to simulate streamflow in the period from 1 January 1982 to 31 December 2022, revealing similar magnitudes of four statistical indicators of observed and estimated streamflow. The capability of the three models in simulating streamflow in data-sparse river basins is finally discussed.","PeriodicalId":104096,"journal":{"name":"Water Practice & Technology","volume":" 708","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141669391","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

Vertical electrical sounding for characterizing subsurface tectonic features and their impacts on groundwater occurrences: a case study of basaltic Jbab uplifting in southern Syria 垂直电法探测地下构造特征及其对地下水分布的影响：叙利亚南部玄武岩贾巴卜隆起案例研究

Water Practice & Technology Pub Date : 2024-07-06 DOI: 10.2166/wpt.2024.165

Jamal Asfahani

{"title":"Vertical electrical sounding for characterizing subsurface tectonic features and their impacts on groundwater occurrences: a case study of basaltic Jbab uplifting in southern Syria","authors":"Jamal Asfahani","doi":"10.2166/wpt.2024.165","DOIUrl":"https://doi.org/10.2166/wpt.2024.165","url":null,"abstract":"\u0000 Eighteen vertical electrical soundings (VES) were carried out by applying the Schlumberger configuration to characterize the main subsurface tectonic features and determine their impacts on groundwater occurrences of the uplifted Jbab area in Southern Syria. Different interpretative approaches were used to interpret these VES distributed on one longitudinal profile (LP) and four transverse profiles TP1, TP2, TP3, and TP4. The originality of this work is the conjoint use of Pichgin and Habibullaev technique, the fractal concentration-number (C–N) modeling technique, and the 1D inversion technique as an integrated interpretative approach (IIA) in subsurface basalt characterization. This IIA proves its efficacy while interpreting the VES data, in delineating the main subsurface geology and the tectonic conditions and their influences on the groundwater distributions in a basaltic Jbab environment. Several optimum VES points are accordingly proposed and arranged according to their importance for drilling wells for groundwater extraction. The integrated developed geoelectrical technology described in this paper is recommended to be applied for characterizing similar basaltic areas worldwide.","PeriodicalId":104096,"journal":{"name":"Water Practice & Technology","volume":" 18","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141671670","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

Optimum hydraulic retention time, the best microbial community genus, and carbon sources in woodchip denitrifying bioreactors: a mini review 木屑脱氮生物反应器中的最佳水力停留时间、最佳微生物群落属种和碳源：微型综述

Water Practice & Technology Pub Date : 2024-07-05 DOI: 10.2166/wpt.2024.175

Sasan Faramarzmanesh

引用次数: 0

Fabrication and characterization of magnetic graphene oxide-g-poly(acrylamide)/gelatin hydrogel nanocomposites for effective adsorption of copper ions from aqueous solutions 磁性氧化石墨烯-聚（丙烯酰胺）/明胶水凝胶纳米复合材料的制备与表征，用于有效吸附水溶液中的铜离子

Water Practice & Technology Pub Date : 2024-07-04 DOI: 10.2166/wpt.2024.171

Parinaz Kheiry, Hossein Hosseinzadeh, M. Saraei, Bakhshali Masoumi

{"title":"Fabrication and characterization of magnetic graphene oxide-g-poly(acrylamide)/gelatin hydrogel nanocomposites for effective adsorption of copper ions from aqueous solutions","authors":"Parinaz Kheiry, Hossein Hosseinzadeh, M. Saraei, Bakhshali Masoumi","doi":"10.2166/wpt.2024.171","DOIUrl":"https://doi.org/10.2166/wpt.2024.171","url":null,"abstract":"\u0000 \u0000 In this work, a magnetic nanocomposite adsorbent was synthesized by crosslinking graft copolymerization of gelatin and acrylamide onto graphene oxide nanosheets in the presence of Fe3O4 nanoparticles. The structure of nanocomposites was characterized by using FTIR, SEM, TEM, XRD, VSM and point of zero charge (pHpzc). The prepared nanocomposites were employed as bioadsorbents for adsorption of copper ions. The effects of adsorption parameters under different conditions were studied in detail through batch experiments. The maximum ion adsorption capacity of 259 g. g−1 was achieved under the optimum conditions that found to be: pH=8.0, copper concentration=80 mg L-1, adsorbent dosage=0.5 mg mg. L−1, contact time=2 hours, and temperature=60 °C. The kinetics and isotherms of adsorption fitted well at various ion concentrations (40, 80 and 160 mg L−1) using second-order and Langmuir models with the R2=0.9991 and 0.9928, respectively. Moreover, the thermodynamic parameters shown that the adsorption process was spontaneous and endothermic. In addition, the adsorbents depicted excellent regeneration ability after six adsorption-desorption cycles and maintained 89 % of its initial adsorption capacity. In conclusion, the obtained results confirmed that the prepared environmentally friendly nanocomposites with high adsorption capacities could be effective adsorbents for the elimination of different ions from wastewaters.","PeriodicalId":104096,"journal":{"name":"Water Practice & Technology","volume":" 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141678504","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

Suitability of cyclic voltammetry for the measurement of sodium borohydride (NaBH4) in a solution of Cr(VI)/organic compounds/NaBH4 循环伏安法测量六价铬/有机化合物/NaBH4 溶液中的硼氢化钠 (NaBH4) 的适用性

Water Practice & Technology Pub Date : 2024-07-04 DOI: 10.2166/wpt.2024.174

Ousmanou Njoya, Seidou Pam, Joseph Sadrack Ondoua Oyono

{"title":"Suitability of cyclic voltammetry for the measurement of sodium borohydride (NaBH4) in a solution of Cr(VI)/organic compounds/NaBH4","authors":"Ousmanou Njoya, Seidou Pam, Joseph Sadrack Ondoua Oyono","doi":"10.2166/wpt.2024.174","DOIUrl":"https://doi.org/10.2166/wpt.2024.174","url":null,"abstract":"\u0000 \u0000 Cr(VI) reduction by NaBH4 enhanced by organic compounds has been proven to be an effective method. The effort for optimized and efficient application of the method was the reason for the determination of residual NaBH4 in the Cr(VI)/organic compounds/NaBH4 reduction system for reducing agent dosage efficiency. This work showed a suitable detection of NaBH4 standard samples using Pt and Au as working electrode, respectively, and graphite rod as an auxiliary electrode and Ag/AgCl as a reference electrode. In the presence of organic compounds (acetate, citrate, and EDTA), interference was observed in the NaBH4 measurement on Pt electrode making it an unsuitable method for NaBH4 measurement in the presence of organic compounds. As the Au plate electrode was used as a working electrode, NaBH4 solutions measurement in the presence of organic compounds (acetate, citrate and EDTA) by peaks at −0.55 V was found to be affected by the coexisting organic compounds. However, no significant interference of the aforementioned organic compounds was observed at the −0.27 V peak values. The presence of Cr(VI) coexisting with NaBH4 was found to interfere with the NaBH4 measurement using both working electrodes, with a strong correlation between Cr(VI) concentration and the peak values obtained at 0.27 V of Au electrode.","PeriodicalId":104096,"journal":{"name":"Water Practice & Technology","volume":" 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141677646","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

Preparation of low-cost biochar from discarded tea waste for aqueous phase removal of hexavalent chromium [Cr(VI)]: kinetics, isotherm, and recyclability analysis 利用废弃茶叶废料制备低成本生物炭用于水相去除六价铬[Cr(VI)]：动力学、等温线和可回收性分析

Water Practice & Technology Pub Date : 2024-07-03 DOI: 10.2166/wpt.2024.172

Deepa Kannaujiya, Devesh Vishwakarma, Shikha

{"title":"Preparation of low-cost biochar from discarded tea waste for aqueous phase removal of hexavalent chromium [Cr(VI)]: kinetics, isotherm, and recyclability analysis","authors":"Deepa Kannaujiya, Devesh Vishwakarma, Shikha","doi":"10.2166/wpt.2024.172","DOIUrl":"https://doi.org/10.2166/wpt.2024.172","url":null,"abstract":"\u0000 \u0000 The paper reports the application of iron–Jatropha leaf extract functionalized biochar derived from discarded tea waste to remove hexavalent chromium from aqueous matrices. The surface of the FeJa@TB was prepared from discarded tea waste and was functionalized by FeSO4, FeCl3, and Jatropha leaf extract. The batch mode adsorption experiments with various experimental conditions such as pH, contact time, initial adsorbate concentration, and temperature, were conducted to evaluate the ability of the adsorbent to remove Cr(VI). Kinetics of the sorption were analyzed by fitting the sorption data on various models namely, pseudo-first-order, pseudo-second-order, and intra-particle diffusion models. The kinetic study concluded that chemisorption was the chief mechanism for the adsorptive removal of Cr(VI) as the sorption followed a pseudo-second-order model. Sorption data fitted better to the Freundlich isotherm model, suggesting multilayer Cr(VI) coverage onto the biochar surface. Thermodynamic parameters ΔG°, ΔH°, and ΔS° were computed to observe the influence of temperature on the process of sorption. The study concluded that the adsorptive removal of Cr(VI) onto biochar was non-spontaneous and exothermic with fewer randomness at the solid–liquid interface. The prepared biochar was recyclable up to six times with insignificant removal efficiency loss.","PeriodicalId":104096,"journal":{"name":"Water Practice & Technology","volume":" 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141680890","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

Review paper on applications of the HEC-RAS model for flooding, agriculture, and water quality simulation 关于 HEC-RAS 模型在洪水、农业和水质模拟方面应用的综述论文

Water Practice & Technology Pub Date : 2024-07-03 DOI: 10.2166/wpt.2024.173

Norsaliha Najwa Zainal, Siti Hidayah Abu Talib, M. S. Abustan, M. A. Rashid

引用次数: 0

Investigation of optimum conditions for the recovery of magnesium ammonium phosphate from human urine using the Box-Behnken design 利用方框-贝肯设计研究从人体尿液中回收磷酸铵镁的最佳条件

Water Practice & Technology Pub Date : 2024-07-03 DOI: 10.2166/wpt.2024.169

Zelal Isik, Begum Caliskan, Pinar Belibagli, N. Dizge

{"title":"Investigation of optimum conditions for the recovery of magnesium ammonium phosphate from human urine using the Box-Behnken design","authors":"Zelal Isik, Begum Caliskan, Pinar Belibagli, N. Dizge","doi":"10.2166/wpt.2024.169","DOIUrl":"https://doi.org/10.2166/wpt.2024.169","url":null,"abstract":"\u0000 Urine from domestic wastewater greatly increases the nutritional value of wastewater. Urine has a high concentration of nutrients and minerals that can be utilized as plant growth agents, according to a chemical analysis. Due to its high phosphate, nitrogen, and potassium content, human urine can serve as a sustainable substitute for chemical fertilizers. Struvite, also referred to as MAP, can be considered as a sustainable fertilizer and it is a magnesium ammonium phosphate crystal with the chemical formula of MgNH4PO4·6H2O. Struvite may be formed from many types of wastewater, one inexpensive and reliable source for struvite formation being human urine. However, struvite formation requires an external magnesium supply due to the extremely low concentration of magnesium in human urine. In this work, magnesium ammonium phosphate was precipitated from human urine by examining the effects of Mg2+ dose, temperature, and pH on struvite crystals. Several experiments for struvite precipitation were created using the Box-Behnken design. Struvite crystals formed upon the addition of a magnesium source at 20 °C, pH 10, and a mole ratio of 1:1. The results show that the large-scale application and nutrient recovery of struvite crystals from human urine are promising.","PeriodicalId":104096,"journal":{"name":"Water Practice & Technology","volume":" 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141681155","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

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