Discover Water最新文献

Biosurfactant-producing bacteria counteract hydrocarbon-driven delay of sulfolane migration in groundwater. 产生生物表面活性剂的细菌抵消了烃类驱动的地下水中环己烷迁移的延迟。

Discover Water Pub Date : 2025-01-01 Epub Date: 2025-05-20 DOI: 10.1007/s43832-025-00228-8

Erica Pensini, Caitlyn Hsiung, Alejandro G Marangoni

{"title":"Biosurfactant-producing bacteria counteract hydrocarbon-driven delay of sulfolane migration in groundwater.","authors":"Erica Pensini, Caitlyn Hsiung, Alejandro G Marangoni","doi":"10.1007/s43832-025-00228-8","DOIUrl":"10.1007/s43832-025-00228-8","url":null,"abstract":"Sulfolane is a worldwide water-soluble pollutant, which typically migrates rapidly in impacted aquifers, with risks to water bodies and drinking water wells. Sulfolane migration may be delayed in sites co-polluted by hydrocarbons, which move more slowly and in which sulfolane partitions. However, when bacteria such as Pseudomonas aeruginosa aerobically biodegrade hydrocarbons and sulfolane, they generate biosurfactants (such as rhamnolipids). These enclose sulfolane within micelles and droplets, as seen by optical microscopy, and hamper its partitioning into hydrocarbons, as shown by Fourier transform infrared spectroscopy. Therefore, biosurfactants have the potential to accelerate sulfolane migration in groundwater, compared to scenarios where biosurfactant-producing bacteria are absent. These findings will aid safe management of impacted sites, where aerobic bacterial bioremediation is used for pollutant clean-up. When aerobic bacterial activity is promoted to enable pollutant biodegradation, sulfolane migration may accelerate before clean-up is complete, begging for careful monitoring of pollutant plumes.Graphical abstract: ","PeriodicalId":29971,"journal":{"name":"Discover Water","volume":"5 1","pages":"36"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12092487/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144128880","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Water security in Mbagathi and Stony Athi catchments within Kenya's SGR corridor under environmental and socio-economic change. 环境和社会经济变化下肯尼亚SGR走廊内Mbagathi和Stony Athi流域的水安全。

Discover Water Pub Date : 2025-01-01 Epub Date: 2025-07-09 DOI: 10.1007/s43832-025-00251-9

Catherine C Sang, Daniel O Olago

{"title":"Water security in Mbagathi and Stony Athi catchments within Kenya's SGR corridor under environmental and socio-economic change.","authors":"Catherine C Sang, Daniel O Olago","doi":"10.1007/s43832-025-00251-9","DOIUrl":"10.1007/s43832-025-00251-9","url":null,"abstract":"Water insecurity, driven by urbanization, population growth, land use and climate change, poses a global challenge. This study examines water supply and demand trends in the Mbagathi-Stony Athi sub-catchments, highlighting urbanization's impact in a semi-arid context. Using GIS, and the WEAP model, various scenarios were simulated. Results show annual rainfall increased insignificantly (p = 0.61) from 1981 to 2019. By 2063, rainfall is projected to rise by 12.43% (RCP 4.5) and 21.02% (RCP 8.5). Mean temperature increased by 0.88 °C (1981-2019) and is projected to rise by 1.70 °C (RCP 4.5) and 1.75 °C (RCP 8.5) by 2063. Land use analysis (2000-2019) showed a 53.67% increase in built-up areas and a 99.32% decline in wetlands. Between 2000 and 2019, the annual supply, demand, and unmet demand increased by 171.64%, 147.56%, and 73%, respectively. Land use changes between 2000 and 2019, particularly the increase in shrublands and decline in bare land, contributed to a 25.51% decrease in surface runoff and a 3.55% rise in total annual evapotranspiration. Future projections indicate surface runoff decreases of up to 4.47% under RCP 4.5 and increases of 9.38% under RCP 8.5. Potential evapotranspiration is projected to rise by 23.39% (reference), 16.44% (RCP 4.5), and 11.19% (RCP 8.5). Water demand will increase across all scenarios, peaking at 184% under high urbanization, while unmet demand will rise by up to 162.47% under irrigation expansion. Water scarcity is expected to worsen due to climate change, population growth, and land use shifts. These findings inform sustainable water resource management in development corridors.","PeriodicalId":29971,"journal":{"name":"Discover Water","volume":"5 1","pages":"51"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12241286/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144627265","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimizing water supply systems in developing regions: a sustainable approach using ESCO model system for urban water supply in Dehradun, India 优化发展中地区的供水系统：利用 ESCO 模型系统为印度德拉敦城市供水提供可持续方法

Discover Water Pub Date : 2024-08-09 DOI: 10.1007/s43832-024-00107-8

Paritosh Singh Rana, Ram Swaroop Uniyal, Krishana Pallava Chamola, Ashish Kumar Srivastava

引用次数: 0

Minimum environmental flow assessment: a fuzzy TOPSIS decision-making system for selecting the best approach 最小环境流量评估：选择最佳方法的模糊 TOPSIS 决策系统

Discover Water Pub Date : 2024-08-08 DOI: 10.1007/s43832-024-00113-w

M. Sedighkia, B. Datta

引用次数: 0

Investigation and detection of multiple antibiotic-resistant pathogenic bacteria in municipal wastewater of Dhaka city 调查和检测达卡市城市污水中的多种耐抗生素病原菌

Discover Water Pub Date : 2024-07-27 DOI: 10.1007/s43832-024-00114-9

Abu Bakkar Siddique, Atia Munni, Maruf Hasan, Rayhan Raj, Md. Abdul Mutalib, Md. Tajuddin Sikder, Tatsufumi Okino, Ayesha Ahmed, Md. Shakhaoat Hossain

引用次数: 0

Drought trend and its association with land surface temperature (LST) over homogeneous drought regions of India (2001–2019) 印度同质干旱地区的干旱趋势及其与地表温度（LST）的关系（2001-2019 年）

Discover Water Pub Date : 2024-07-26 DOI: 10.1007/s43832-024-00115-8

Animesh Choudhury

引用次数: 0

Geospatial insights into groundwater contamination from urban and industrial effluents in Faisalabad 费萨拉巴德城市和工业废水对地下水污染的地理空间分析

Discover Water Pub Date : 2024-07-24 DOI: 10.1007/s43832-024-00110-z

Abdul Quddoos, Khalid Muhmood, Iram Naz, Rana Waqar Aslam, Syed Yasir Usman

引用次数: 0

Phosphorus removal by free water surface constructed wetlands for the wastewater treatment: bibliometric and bibliographic review 利用自由水体表面建造的湿地进行废水处理除磷：文献计量学和文献综述

Discover Water Pub Date : 2024-07-23 DOI: 10.1007/s43832-023-00050-0

Renato Zimiani de Paula, Luciane Fontana, T. A. de Jesus