Ground Water Monitoring and Remediation最新文献_第9页

Sole Source Aquifer Program: Statute, Regulation, and Guidance—Community-Based Groundwater Protection 单一水源含水层计划:法规、法规和指南——基于社区的地下水保护

IF 1.9 4区环境科学与生态学

Ground Water Monitoring and Remediation Pub Date : 2023-10-23 DOI: 10.1111/gwmr.12622

Charles Job

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In my Experience: Groundwater-Surface-Water Interactions Reflect the Path of Least Resistance 根据我的经验:地下水-地表水-水的相互作用反映了阻力最小的路径

IF 1.9 4区环境科学与生态学

Ground Water Monitoring and Remediation Pub Date : 2023-10-20 DOI: 10.1111/gwmr.12621

Donald Rosenberry

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Simulating the Spatial Extent of Thermally Enhanced Reaction Zones for Low Temperature Thermal Treatment 模拟低温热处理热增强反应区的空间范围

IF 1.9 4区环境科学与生态学

Ground Water Monitoring and Remediation Pub Date : 2023-10-09 DOI: 10.1111/gwmr.12616

Qianli Xie, Kevin G. Mumford, Bernard H. Kueper

{"title":"Simulating the Spatial Extent of Thermally Enhanced Reaction Zones for Low Temperature Thermal Treatment","authors":"Qianli Xie, Kevin G. Mumford, Bernard H. Kueper","doi":"10.1111/gwmr.12616","DOIUrl":"10.1111/gwmr.12616","url":null,"abstract":"Low temperature thermal treatment (LTTT) is a technology that can enhance aqueous-phase degradation reactions for organic constituents in groundwater. Understanding heat transfer in groundwater is important for the design of LTTT applications. In this study, the effect of permeability heterogeneity on temperature distributions during and after the application of heat was investigated by numerical modeling. An enhanced reaction zone was determined for the hydrolysis of 1,1,1-trichloroethane (1,1,1-TCA) using an average half-life considering the temperature history during and after heating. For hydrolysis reactions, the average half-life could be reduced substantially by reaching a high temperature for a short period of time because their reaction rates increase exponentially with increased temperatures. Results showed that the enhanced reaction zone was shifted downstream of the heater well zone at high groundwater velocities. This suggests that heaters should be shifted upstream of the target treatment zone to fully utilize the applied heat. In addition, permeability heterogeneity leads to greater macroscopic dispersion at higher velocities. This resulted in higher spreading of heat and faster heat dissipation in the simulations with a heterogeneous permeability condition compared with a homogenous permeability condition. As a result, the enhanced reaction zone was smaller in simulations with higher levels of permeability heterogeneity at a mean velocity of 0.3 m/day.","PeriodicalId":55081,"journal":{"name":"Ground Water Monitoring and Remediation","volume":"44 1","pages":"72-82"},"PeriodicalIF":1.9,"publicationDate":"2023-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135093075","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bioremediation of Chlorate and Chromium Contamination with Native Microbial Culture in Cold Climate 寒冷气候下利用本地微生物培养对氯酸盐和铬污染进行生物修复

IF 1.9 4区环境科学与生态学

Ground Water Monitoring and Remediation Pub Date : 2023-08-24 DOI: 10.1111/gwmr.12610

Mehdi Motevasselin, Beata Gorczyca, Indra Kalinovich, Richard Sparling

{"title":"Bioremediation of Chlorate and Chromium Contamination with Native Microbial Culture in Cold Climate","authors":"Mehdi Motevasselin, Beata Gorczyca, Indra Kalinovich, Richard Sparling","doi":"10.1111/gwmr.12610","DOIUrl":"10.1111/gwmr.12610","url":null,"abstract":"Chlorate and hexavalent chromium are two chemicals with adverse health effects that may cause groundwater contamination in industrial areas. The objective of this study was to determine if the native microorganisms collected from a site contaminated with chlorate and chromate can lower the concentration of these chemicals in groundwater to acceptable regulatory levels. Several anaerobic microcosm experiments were conducted with synthetic groundwater (media), native microorganisms, acetate as an electron donor, nitrogen, phosphorus, and minerals. The microorganisms utilized 2200 mg/L acetate to remove 1000 mg/L of chlorate and 3 mg/L of hexavalent chromium entirely from the media provided that the groundwater is supplemented with additional nitrogen and phosphorous (with the Carbon:Nitrogen:Phosphorous molar ratio of 100:10:5). The added trace minerals solution prepared based on American Type Culture Collection (ATCC) 1191 medium did not improve the remediation process. Native microbial culture derived from the contaminated site removed the chlorate and chromate from the synthetic groundwater at 20 °C in about 40 days. The same removal was achieved at 10 °C, but in a longer timespan of 80 days. This work confirmed the importance of ensuring the presence of sufficient N and P to stimulate chlorate- and chromate-reducing bacteria in the groundwaters.","PeriodicalId":55081,"journal":{"name":"Ground Water Monitoring and Remediation","volume":"44 1","pages":"46-56"},"PeriodicalIF":1.9,"publicationDate":"2023-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/gwmr.12610","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126377016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Monte-Carlo Chemical Budget Approach to Assess Ambient Groundwater Flow in Bedrock Open Boreholes 评估基岩露天钻孔中环境地下水流的蒙特卡洛化学预算方法

IF 1.9 4区环境科学与生态学

Ground Water Monitoring and Remediation Pub Date : 2023-08-22 DOI: 10.1111/gwmr.12611

Philip T. Harte

{"title":"A Monte-Carlo Chemical Budget Approach to Assess Ambient Groundwater Flow in Bedrock Open Boreholes","authors":"Philip T. Harte","doi":"10.1111/gwmr.12611","DOIUrl":"10.1111/gwmr.12611","url":null,"abstract":"In low-permeability rocks, ambient groundwater flow in open boreholes may go undetected using conventional borehole-flowmeter tools and alternative approaches may be needed to identify flow. Understanding ambient flow in open boreholes is important for tracking of cross contamination in groundwater. Chlorinated volatile organic compound (CVOC) concentrations from three open boreholes set in a crystalline-rock aquifer (two of three open boreholes) and a siltstone aquifer (one of three open boreholes) were examined using a new approach and associated software program called the AFCE (Aqueous-Flow-Concentration-Estimator). The program allows comparison of coupled chemical datasets through a Monte-Carlo simulation and a chemical-budget approach to assess ambient groundwater flow in open boreholes. The coupled datasets required for the comparison include aqueous CVOC concentrations from groundwater samples from (1) discrete fractures, such as those measured from temporary deployment of straddle-borehole packer assemblies; and (2) the concentration of the open borehole (wellbore) water, as measured by a vertical profile of passive samplers from within the same open borehole. Because results from the passive samplers represent a composite mixture of the results from the discrete samples under ambient groundwater-flow conditions, potentially at unknown proportions, the comparison between coupled datasets affords the ability to discern likely water contributions of CVOC from discrete fractures (or fracture zones), and which fractures may be dominating the water chemistry of the open borehole.","PeriodicalId":55081,"journal":{"name":"Ground Water Monitoring and Remediation","volume":"44 1","pages":"57-71"},"PeriodicalIF":1.9,"publicationDate":"2023-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124540844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Newsline 时事纵横

IF 1.9 4区环境科学与生态学

Ground Water Monitoring and Remediation Pub Date : 2023-07-31 DOI: 10.1111/gwmr.12598

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Issue Information - ISSN page 问题信息-ISSN页面

IF 1.9 4区环境科学与生态学

Ground Water Monitoring and Remediation Pub Date : 2023-07-31 DOI: 10.1111/gwmr.12462

引用次数: 0