Water Security最新文献_第4页

Adaptable community participatory design to provide water that is Estético, Seguro, y Saludable (pleasant, safe, and healthy) in the Ecuadorian Amazon 适应性社区参与式设计，在厄瓜多尔亚马逊地区提供est<s:1> tico, Seguro, y Saludable(宜人，安全和健康)的水

Water Security Pub Date : 2023-12-01 DOI: 10.1016/j.wasec.2023.100150

Josh Kearns , Alexis Gropper , Jose Luis Muñoz , Pablo Yepéz

{"title":"Adaptable community participatory design to provide water that is Estético, Seguro, y Saludable (pleasant, safe, and healthy) in the Ecuadorian Amazon","authors":"Josh Kearns , Alexis Gropper , Jose Luis Muñoz , Pablo Yepéz","doi":"10.1016/j.wasec.2023.100150","DOIUrl":"https://doi.org/10.1016/j.wasec.2023.100150","url":null,"abstract":"<div><p>A pedagogical framework was developed for water that is aesthetically pleasant, microbiologically safe, and healthy from a chemical perspective for consumption by vulnerable individuals and over lifetimes. This “pleasant, safe, and healthy” framework was used to facilitate discussion of drinking water source selection and design of treatment approaches with Ecuadorian Amazonian communities affected by petrochemical and agrichemical pollution and partially or totally lacking in centralized water infrastructure. Iterative participatory discussion identified biological slow sand filtration and biochar adsorption as unit processes for addressing microbiological and chemical water contaminants with which communities had some prior familiarity. However, significant shortcomings and knowledge gaps were discovered in extant approaches that led to poor treatment performance and disuse of previous water interventions. A workshop was conducted to bring communities’ and local implementers’ understanding and abilities in line with current best-practices for sustainable provision of pleasant, safe, and healthy drinking water using local materials.</p></div>","PeriodicalId":37308,"journal":{"name":"Water Security","volume":"20 ","pages":"Article 100150"},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138501548","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

Decentralised solar-based water treatment – Bridging the last mile to water security in low- and middle-income countries? 分散式太阳能水处理——为中低收入国家的水安全架起最后一英里的桥梁?

Water Security Pub Date : 2023-11-28 DOI: 10.1016/j.wasec.2023.100146

Brandon Reyneke , Tinta C. Morris , Pilar Fernández-Ibáñez , Kevin G. McGuigan , Ashley Heida , Kerry A. Hamilton , Wesaal Khan

引用次数: 0

A review of water reuse applications and effluent standards in response to water scarcity 针对水资源短缺的水再利用应用和出水标准综述

Water Security Pub Date : 2023-11-27 DOI: 10.1016/j.wasec.2023.100154

Drew Rich , Esber Andiroglu , Kathryn Gallo , Sivakumar Ramanathan

{"title":"A review of water reuse applications and effluent standards in response to water scarcity","authors":"Drew Rich , Esber Andiroglu , Kathryn Gallo , Sivakumar Ramanathan","doi":"10.1016/j.wasec.2023.100154","DOIUrl":"https://doi.org/10.1016/j.wasec.2023.100154","url":null,"abstract":"<div><p>In recent decades, population growth and various environmental hazards induced by climate change impacts have highlighted economic and public health stresses which brought water scarcity to front lines at a global scale. Over two billion people live in countries that are experiencing water scarcity, while double that number live in countries that experience water scarcity at least one month a year [5]. Lack of clean water can lead to severe impacts both in terms of health and well-being and reduced economic growth [4,5]. The challenges associated with water scarcity are only projected to be exacerbated by various complex factors causing unsustainable management and withdrawals of key water sources in the decades ahead. Water scarcity can be addressed through two approaches, defined as improved water efficiency practices and the introduction of different water streams that could replace traditionally sourced potable water. While regulations have been implemented to make water use practices more efficient, water use efficiency alone has not been enough to overcome the increasing water demand. With recent advancements and technologies in treatment and monitoring water reuse has been thrust back into the spotlight as a viable option to help create a more sustainable water supply. Globally water reuse is in varying stages of implementation based on geographic, cultural, legislative, and economic factors. Levels of use range from advanced, with some countries receiving a majority of their water from recycled sources, to non-existent. This paper will focus on the legislative framework that exists in the United States today for municipal water reuse.</p></div>","PeriodicalId":37308,"journal":{"name":"Water Security","volume":"20 ","pages":"Article 100154"},"PeriodicalIF":0.0,"publicationDate":"2023-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138447928","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

Editorial: Climate, hydrology, and water-management challenges for water security in India 社论:印度水安全面临的气候、水文和水管理挑战

Water Security Pub Date : 2023-11-26 DOI: 10.1016/j.wasec.2023.100156

Vimal Mishra , V.M. Tiwari

引用次数: 0

Editorial of “Water security for sustainable development” 《水安全促进可持续发展》社论

Water Security Pub Date : 2023-11-25 DOI: 10.1016/j.wasec.2023.100157

Ankit Agarwal , Archana Sarkar , Ashish Pandey , Arun Kumar , Ashutosh Sharma

引用次数: 0

Inequalities in water, sanitation and hygiene: Challenges and opportunities for measurement and monitoring 水、环境卫生和个人卫生方面的不平等:衡量和监测的挑战和机遇

Water Security Pub Date : 2023-10-20 DOI: 10.1016/j.wasec.2023.100143

Sarah Dickin , Sara Gabrielsson

引用次数: 0

Missing the middle: Deep cyanobacteria layers pose a “known unknown” risk to water security 缺少中间:深层蓝藻层对水安全构成“已知未知”的风险

Water Security Pub Date : 2023-09-01 DOI: 10.1016/j.wasec.2023.100142

Kevin J. Erratt , Irena F. Creed , Erika C. Freeman , Charles G. Trick

引用次数: 0

Release of geogenic fluoride from contaminated soils of Rajasthan, India: Experiments and geochemical modeling 印度拉贾斯坦邦受污染土壤中地源氟化物的释放:实验和地球化学模拟

Water Security Pub Date : 2023-08-01 DOI: 10.1016/j.wasec.2023.100140

Bhawna Thakur , Vijay A. Loganathan , Anupma Sharma , Rakesh K. Sharma , Alison Parker

{"title":"Release of geogenic fluoride from contaminated soils of Rajasthan, India: Experiments and geochemical modeling","authors":"Bhawna Thakur , Vijay A. Loganathan , Anupma Sharma , Rakesh K. Sharma , Alison Parker","doi":"10.1016/j.wasec.2023.100140","DOIUrl":"https://doi.org/10.1016/j.wasec.2023.100140","url":null,"abstract":"<div><p>Management of groundwater contaminants, that are primarily of geogenic origin, such as fluoride, is a major public health concern. Worldwide, around 200 million people are dependent on drinking water<span> resources that contain elevated levels of fluoride that exceeds WHO’s drinking water threshold limit of 1.5 mg/L. According to the Ministry of Drinking Water and Sanitation of India, about 11.7 million people, mostly in the Rajasthan state, are exposed to high fluoride risk. It is important to understand the soil–water interaction mechanisms to properly assess the fluoride contamination that are primrily due to geogenic origins prevalent in the region. In this study, batch desorption experiments were performed with soils obtained from varied depths at two sites in Rajasthan that has high fluoride levels in groundwater. The fluoride release kinetics followed a pseudo first-order kinetic model. The results of the batch experiments indicate higher release of fluoride from lower soil layers when compared to the upper layers. Further, the release of fluoride was dependent on pH wherein higher release was noticed under basic pH. Since the natural pH of the soils from this region is ca. pH 8 it is expected to play a vital role in the continued release of fluoride to the groundwater system. Furthermore, a simplified geochemical model, incorporating a general composite approach, has been used to simulate the experimental results that include dissolved Al and Al-F surface complexes. The model was able to capture the observed experimental results for various soils within a reasonable RMSE of 11.74%. The results of this study not only further the current understanding of the fate and transport mechanisms of fluoride in the contaminated subsurface but also would aid in designing remedial strategies to ensure future water security in this region.</span></p></div>","PeriodicalId":37308,"journal":{"name":"Water Security","volume":"19 ","pages":"Article 100140"},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49712366","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

Experiments and geochemical modelling of arsenic interaction with clay-dominated soil from Rupnagar district of Punjab, India 砷与印度旁遮普鲁普纳格尔地区粘土土相互作用的实验和地球化学模拟

Water Security Pub Date : 2023-08-01 DOI: 10.1016/j.wasec.2023.100139

Hafsa Nazir, Vijay A. Loganathan

{"title":"Experiments and geochemical modelling of arsenic interaction with clay-dominated soil from Rupnagar district of Punjab, India","authors":"Hafsa Nazir, Vijay A. Loganathan","doi":"10.1016/j.wasec.2023.100139","DOIUrl":"10.1016/j.wasec.2023.100139","url":null,"abstract":"<div><p>The present study investigates the interaction of the soil in Garhbaga village, located in the Rupnagar district of Punjab, India for As(V) adsorption under the influence of pH, contact time and varying arsenic concentrations. To understand the geochemical controls of arsenic mobilization in the region, batch sorption experiments were performed using soil obtained from arsenic contaminated district of Punjab. This study presents a novel approach by employing surface complexation models (SCMs) to investigate arsenic adsorption onto natural soils in the Punjab region, which has not been explored in previous literature. Furthermore, a comparison between Fe-based models, assuming ferrihydrite binding, and general composite (GC) approach, assuming adsorption on soil component surfaces, has not been conducted before, adding to the originality of this research. The adsorption kinetic experiment indicates about 70% adsorption of As(V) in about 4 h. The results of batch isotherm experiment shows that As(V) adsorption saturation onto the soil is reached at an aqueous concentration of about 0.89 mgL<sup>−1</sup>. The results of the pH edges study shows a maximum As(V) adsorption of 93.88% at a pH of 4. The Langmuir’s isotherm was the best fitted because the value of linear regression coefficient (R<sup>2</sup> = 0.997) which verifies the monolayer adsorption of As(V). It was observed that the pseudo first order model best fitted for explaining the kinetic of As(V) adsorption onto the soil because it showed higher value of linear regression coefficient (R<sup>2</sup> = 0.995). Further, three different diffused layer models under varied assumptions were used to capture the batch experimental results. The surface complexation model with general-composite (GC) approach fairly predicted the experimental results when compared to Fe-oxide based models. The GC model was able to capture the observed experimental results for adsorption isotherm and pH edges for the soil within reasonable RMSE of 6.22 % and 7.97 %, respectively.</p></div>","PeriodicalId":37308,"journal":{"name":"Water Security","volume":"19 ","pages":"Article 100139"},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44184502","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

Informing watershed management in data-scarce Indian Himalayas 为数据匮乏的印度喜马拉雅山脉流域管理提供信息

Water Security Pub Date : 2023-08-01 DOI: 10.1016/j.wasec.2023.100138

Bhargabnanda Dass , Denzil Daniel , Nishant Saxena , Anita Sharma , Debashish Sen , Sumit Sen

引用次数: 2