Water Science & Technology: Water Supply最新文献_第4页

Adsorption of fluoride from water using Al–Mg–Ca ternary metal oxide-coated sand 铝镁钙三元金属氧化物包覆砂对水中氟化物的吸附研究

Water Science & Technology: Water Supply Pub Date : 2023-10-13 DOI: 10.2166/ws.2023.269

Kiana Modaresahmadi, Amid Khodadoust, James Wescott

{"title":"Adsorption of fluoride from water using Al–Mg–Ca ternary metal oxide-coated sand","authors":"Kiana Modaresahmadi, Amid Khodadoust, James Wescott","doi":"10.2166/ws.2023.269","DOIUrl":"https://doi.org/10.2166/ws.2023.269","url":null,"abstract":"Abstract An aluminum–magnesium–calcium-coated sand (AMCCS) sorbent was evaluated as a low-cost ternary metal oxide adsorbent for adsorption and removal of fluoride from water with potential application in flow-through water filtration systems. The AMCCS sorbent coating contained mostly amorphous oxides of aluminum, magnesium, and calcium. The adsorption of fluoride occurred in less than an hour, while fluoride adsorption followed pseudo-second-order kinetics. The favorable adsorption of fluoride onto the AMCCS sorbent occurred according to the Langmuir and Freundlich adsorption equations, whereas the physical adsorption of fluoride onto the AMCCS sorbent occurred based on the Dubinin–Radushkevich adsorption equation. The adsorption of fluoride occurred over a broad pH range from 2 to 10.5 with a decrease in adsorption at pH above 10.5, indicative of the adsorption of fluoride onto the positively charged surface of AMCCS sorbent at pH below the AMCCS sorbent pHPZC of 10.4. The AMCCS sorbent was able to remove fluoride from natural waters with appreciable alkalinity, total hardness and total dissolved solids, indicative of AMCCS sorbent selectivity for fluoride adsorption. The AMCCS sorbent was re-coated and reused after several adsorption cycles, rendering the AMCCS sorbent a recyclable and sustainable adsorbent for effective and rapid removal of fluoride from water.","PeriodicalId":23573,"journal":{"name":"Water Science & Technology: Water Supply","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135805651","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: 1

Equitable supply in intermittently operated rural water networks in emerging economies 新兴经济体中间歇性运行的农村供水网络的公平供应

Water Science & Technology: Water Supply Pub Date : 2023-10-13 DOI: 10.2166/ws.2023.268

Varghese Kurian, Prasanna Mohandoss, Srinesh Chandrakesa, Saravanan Chinnusamy, Shankar Narasimhan, Sridharakumar Narasimhan

引用次数: 0

Assessment of forest food–water resources nexus and its utilization efficiency based on the Gaussian model 基于高斯模型的森林食物-水资源关系及其利用效率评价

Water Science & Technology: Water Supply Pub Date : 2023-10-13 DOI: 10.2166/ws.2023.267

Weiguang Xie, Huaquan Ma

引用次数: 0

New production pathway of musty 2,4,6-tribromoanisole during raw water disinfection processes at a surface water treatment plant 地表水处理厂原水消毒过程中霉性2,4,6-三溴苯甲醚的新生产途径

Water Science & Technology: Water Supply Pub Date : 2023-10-13 DOI: 10.2166/ws.2023.264

Hunter Adams, Susheera Pochiraju, Keisuke Ikehata, Mark Southard, Sam Reeder, Emily Appleton, Daniel Nix

{"title":"New production pathway of musty 2,4,6-tribromoanisole during raw water disinfection processes at a surface water treatment plant","authors":"Hunter Adams, Susheera Pochiraju, Keisuke Ikehata, Mark Southard, Sam Reeder, Emily Appleton, Daniel Nix","doi":"10.2166/ws.2023.264","DOIUrl":"https://doi.org/10.2166/ws.2023.264","url":null,"abstract":"Abstract The City of Wichita Falls’ Cypress Environmental Laboratory developed a comprehensive taste and odor (T&O) monitoring program to identify T&O compounds, their point of origin, and how to mitigate each T&O event to lessen its impact and maintain consumer confidence. In January 2023, a T&O compound was detected in the water system using sensory analysis with a threshold odor number (TON) of 3, guiding further analytical testing to identify for musty compounds. The unknown was confirmed to be 2,4,6-tribromoanisole (2,4,6-TBA) at a maximum of 9.86 ng/L. Its point of origin for production was tracked to a raw water line using chlorine dioxide as a primary disinfectant. Jar tests were performed to confirm that the mode of production was excess-free chlorine from the generation of chlorine dioxide in the presence of bromide in raw water. The event was mitigated using powdered activated carbon in clarifiers to adsorb and settle out the compound, resulting in a non-detectable level (a TON of 1 and &lt;5.00 ng/L for 2,4,6-TBA). This paper discusses the unique generation pathway within a full-scale treatment plant and how a monitoring and response program can be used to help detect a T&O event at an early stage and aid the mitigation process.","PeriodicalId":23573,"journal":{"name":"Water Science & Technology: Water Supply","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135918101","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

Projection of monthly surface flows by an optimized SWAT–MLP: a case study 利用优化的SWAT-MLP预测每月地面流量:一个案例研究

Water Science & Technology: Water Supply Pub Date : 2023-10-13 DOI: 10.2166/ws.2023.265

Gao Furong, Sarmistha Hossain

引用次数: 0

Water footprint approach in measuring the potential of bioenergy production from agricultural products 用水足迹法衡量农产品生产生物能源的潜力

Water Science & Technology: Water Supply Pub Date : 2023-10-12 DOI: 10.2166/ws.2023.263

Fangfang Zeng

{"title":"Water footprint approach in measuring the potential of bioenergy production from agricultural products","authors":"Fangfang Zeng","doi":"10.2166/ws.2023.263","DOIUrl":"https://doi.org/10.2166/ws.2023.263","url":null,"abstract":"Abstract Promoting the supply of energy from biomass to reduce the emission of greenhouse gases has resulted in focusing on the production of important products from the perspective of energy and ultimately, increasing water consumption. Therefore, in the present study, an index called water footprint was used to investigate the link between water and bioenergy. For this purpose, information related to grain maize crops was collected in the study plains of Fujian province in eastern China. Based on the calculations, it was found that the water footprint of maize products in the province was equal to 3,728 m3/ton on average, and the water footprint of its biomass was estimated to be 219.6 m3/ton. Moreover, the investigation of the water footprint of maize biomass energy showed that the highest and lowest water footprints per unit of energy are found in Ningde and Zhangzhou, respectively. It was also found that the plains of Zhangzhou, Ningde and Xiamen have little priority for biomass production because the water footprint of their biomass energy is less than 900 MJ/m3. On the other hand, Nanping and Putian plains with bioenergy water footprints between 1,500 and 1,800 MJ/m3 have high priority for using maize biomass for energy production.","PeriodicalId":23573,"journal":{"name":"Water Science & Technology: Water Supply","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135968168","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

Experimental study on the performance of the dielectric barrier discharge technique in the treatment of simulated groundwater with high iron and manganese content 介质阻挡放电技术处理高铁、高锰模拟地下水的试验研究

Water Science & Technology: Water Supply Pub Date : 2023-10-12 DOI: 10.2166/ws.2023.270

Yixin Jin, Xuezhi Li, Lida Ma, Wenjie Tian, Linlin Zhang, Aonan Liu

{"title":"Experimental study on the performance of the dielectric barrier discharge technique in the treatment of simulated groundwater with high iron and manganese content","authors":"Yixin Jin, Xuezhi Li, Lida Ma, Wenjie Tian, Linlin Zhang, Aonan Liu","doi":"10.2166/ws.2023.270","DOIUrl":"https://doi.org/10.2166/ws.2023.270","url":null,"abstract":"Abstract Groundwater with high concentrations of iron and manganese is harmful to the human body and modern industries. Conventional methods of treating iron and manganese have the disadvantage of high costs and complex control processes. A dielectric barrier discharge (DBD) water treatment system was built to remove iron and manganese from groundwater in this paper. Single-factor experiments were used to analyze the effect of discharge power, initial iron and manganese concentrations, gas flow rate, liquid flow rate, initial pH, flocculant and capture agent process parameters on iron and manganese removal rates. It was found that Fe2+ removal rates can reach 97.31% and Mn2+ removal rates can reach 81.42% when the initial concentrations of Fe2+ and Mn2+ are 6 and 3 mg/L, respectively. The use of 10 mg/L NaHCO3 or 5 mg/L Ca(OH)2 increased the removal rate of Fe2+ to 99% but had no effect on the removal rate of Mn2+. It was found that the optimum treatment time for Mn2+ was different for different process parameters, mainly in the range of 9–15 min, which needs to be noted in future production applications. This work shows that DBD can effectively remove iron and manganese ions from groundwater and analyzes the removal mechanism.","PeriodicalId":23573,"journal":{"name":"Water Science & Technology: Water Supply","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136057682","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 productivity maximization and ecosystem monitoring to estimate tourism economic value 水生产力最大化与生态系统监测估算旅游经济价值

Water Science & Technology: Water Supply Pub Date : 2023-10-09 DOI: 10.2166/ws.2023.262

Maozheng Fu, Zhenrong Luo, Liying Feng, Xiaoping Que

{"title":"Water productivity maximization and ecosystem monitoring to estimate tourism economic value","authors":"Maozheng Fu, Zhenrong Luo, Liying Feng, Xiaoping Que","doi":"10.2166/ws.2023.262","DOIUrl":"https://doi.org/10.2166/ws.2023.262","url":null,"abstract":"Abstract Water supply from a common pool resource based on productivity indicators for different uses is one of the goals of planning in dry areas. Productivity indicators are defined based on time, geographical location and hydrological conditions in the form of food security, economic benefits and ecosystem restoration. This study was conducted in order to evaluate the contrast between economic criteria and food security in the exploitation of water resources in Lu'an city in Anhui province of China. Probabilistic modeling based on the prediction of uncertain values using the Latin hypercube technique was used for hydrological variables and water resources. The method of data mining and trend analysis of dependent variables was also simulated to estimate economic values in the water cycle. Statistical information of 32 years from 1991 to 2022 has been collected and used as an annual average per population. The results showed that the economic value of water consumption in the tourism industry has increased compared to agriculture. The total water provided for food security is equal to 6.5 m3 per person, the excess of which can be allocated to other uses through weighting indicators based on ecosystem and quality.","PeriodicalId":23573,"journal":{"name":"Water Science & Technology: Water Supply","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135094330","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

Evaluation energy flow and analysis of energy economy for agricultural yield production in different geographical regions of China 中国不同地理区域农业产量生产能量流评价与能源经济分析

Water Science & Technology: Water Supply Pub Date : 2023-10-09 DOI: 10.2166/ws.2023.261

Kai Li

{"title":"Evaluation energy flow and analysis of energy economy for agricultural yield production in different geographical regions of China","authors":"Kai Li","doi":"10.2166/ws.2023.261","DOIUrl":"https://doi.org/10.2166/ws.2023.261","url":null,"abstract":"Abstract Dry and humid climates have different potentials for providing soil moisture. Agricultural drought is a confirmed criterion for evaluating production potential in agriculture, which is discussed in this research. Therefore, this research aims to investigate drought using meteorological and agricultural drought indicator data in four climatic regions of China (humid, semi-humid, semi-arid and dry). For this purpose, climatic information was collected in the last 20 years, and the values of the standard precipitation index (SPI) and reconnaissance drought index (RDI) were determined. Examining the indicators indicates that the indicators are high in all the years under review in dry areas. In the semi-arid region, there was a significant decrease in the average value of the indices in July and August in the years 2017–2022. Drought indicators did not show a critical situation in humid and semi-humid areas, and there was sufficient moisture for plants throughout the year. The results showed that there was a high correlation between the SPI and the RDI in all the identified areas. In addition to rainfall, the RDI also includes transpiration and is more sensitive, especially in dry areas where transpiration is higher than rainfall.","PeriodicalId":23573,"journal":{"name":"Water Science & Technology: Water Supply","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135149375","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 Supply 1 May 2023; 23 (5): 2197–2209. Evaluation on real-time self-organization algorithm of forest cultivation, tea planting, and tea processing for sustainable ecosystem management of agricultural water resources. Zhenhong Wang, Liyong Zhang, Minfeng Song, Sangjie Luobu, Jiumei, Danzhen, Hong Peng 更正:供水2023年5月1日;23(5): 2197-2209。面向农业水资源生态系统可持续管理的森林种植、茶叶种植和茶叶加工实时自组织算法评价王振红，张立勇，宋敏峰，罗桑杰，九梅，丹珍，彭红

Water Science & Technology: Water Supply Pub Date : 2023-10-06 DOI: 10.2166/ws.2023.271

引用次数: 0