Electrokinetic Remediation of Heterogeneous and Low Permeability Soils Contaminated by Hydrophobic Organic Compounds
疏水性有机化合物污染的异质低渗透土壤的动电修复
基本信息
- 批准号:0100073
- 负责人:
- 金额:$ 23.38万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Continuing Grant
- 财政年份:2001
- 资助国家:美国
- 起止时间:2001-09-15 至 2005-08-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Throughout the United States, hydrophobic organic compound (HOC) contamination has become a widespread and pervasive problem. HOCs, which include tars, creosotes, petroleum residues, and chlorinated solvents, are commonly used in a myriad of different industries. They are generally classified as irritants and/or toxins, and many have been identified as lethal carcinogens. Therefore, in order to protect public health and the environment, sites with existing contamination urgently need remediation. Unfortunately, removing HOC contamination has proved to be very difficult. These compounds are extremely persistent due to their low aqueous solubilities, and their distribution within the subsurface is highly dependent on particle and macro-scale heterogeneities. In spite of attempts to develop efficient HOC remediation technologies, very few have been successful. In-situ flushing with surfactants/cosolvents, though, has been shown to be promising. Surfactants/cosolvents are pumped into the subsurface to increase HOC desorption/solubilization by lowering interfacial tension. Once in solution, the contaminants are mobilized towards wells where the solution is commonly pumped out and treated. The effectiveness of the flushing process, however, depends largely on the extent of contaminant desorption and solubilization, and the degree of interaction between the solution, contaminant, and soil.The objective of this research is therefore to characterize the distribution of HOCs in heterogeneous soil environments and develop and evaluate the electrokinetic enhancement technique for the remediation of HOCs under difficult heterogeneous subsurface conditions. Though electrokinetically enhanced flushing has great potential, the physicochemical reactions and transport mechanisms are complex. A complete fundamental and conceptual understanding of the various components of the process is essential. To achieve this goal, the following tasks will be performed: (1) characterization of the HOCs in heterogeneous soils, (2) evaluation of surfactants/cosolvents for enhanced HOC desorption and solubilization, (3) assessment of HOC removal from particle-scale heterogeneous soils, (4) assessment of HOC removal from macro-scale heterogeneous soils, and (5) development of design guidelines for remediating HOC-contaminated soils.In conjunction with the research objectives, the project will offer educational opportunities and infrastructure improvements for geotechnical and geoenvironmental education at both the graduate and undergraduate student levels. Equipment for the research, especially the physical two-dimensional simulation models, will serve as important demonstration tools for classroom instruction.
在整个美国,疏水性有机化合物(HOC)污染已经成为一个广泛和普遍的问题。 HOCs包括焦油、杂酚油、石油残留物和氯化溶剂,通常用于无数不同的行业。 它们通常被归类为刺激物和/或毒素,许多已被确定为致命的致癌物质。 因此,为了保护公众健康和环境,存在污染的场地迫切需要修复。 不幸的是,事实证明,去除HOC污染非常困难。 这些化合物是非常持久的,由于其低的水溶性,其分布在地下是高度依赖于颗粒和宏观尺度的异质性。 尽管试图开发有效的HOC补救技术,但很少成功。 然而,用表面活性剂/助溶剂原位冲洗已被证明是有前途的。 将表面活性剂/助溶剂泵入地下,通过降低界面张力来增加HOC的解吸/溶解。 一旦在溶液中,污染物被移动到威尔斯井中,在那里溶液通常被泵出和处理。 然而,冲洗过程的有效性,在很大程度上取决于污染物的解吸和溶解的程度,以及溶液,污染物和土壤之间的相互作用的程度,因此,本研究的目的是表征HOCs在异质土壤环境中的分布,并开发和评估电动增强技术修复HOCs在困难的异质地下条件下。 虽然电动强化冲洗具有巨大的潜力,但其物理化学反应和传输机制复杂。 对这一过程的各个组成部分有一个完整的基本和概念性的理解是必不可少的。 为实现这一目标,将执行以下任务:(1)非均质土壤中HOC的表征,(2)用于增强HOC解吸和增溶的表面活性剂/共溶剂的评价,(3)从颗粒尺度非均质土壤中去除HOC的评估,(4)从宏观尺度非均质土壤中去除HOC的评估,及(5)发展修复受HOC污染土壤的设计指引。结合研究目标,该项目将为研究生和本科生的岩土工程和地质环境教育提供教育机会和基础设施改善程度. 研究设备,特别是物理二维仿真模型,将作为课堂教学的重要演示工具。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Krishna Reddy其他文献
Discovering Diverse-Frequent Patterns in Transactional Databases
发现事务数据库中的不同频率模式
- DOI:
- 发表时间:
2011 - 期刊:
- 影响因子:0
- 作者:
Somya Srivastava;Krishna Reddy - 通讯作者:
Krishna Reddy
Interestingness Measures for Rare Association Rules and Periodic-Frequent Patterns
稀有关联规则和周期频繁模式的兴趣度测量
- DOI:
- 发表时间:
2011 - 期刊:
- 影响因子:0
- 作者:
Akshat Surana;Krishna Reddy;U. Kiran;Mohak Sharma;A. Sainani - 通讯作者:
A. Sainani
Secure Cluster based Routing Using Multiobjective Trust Centric Reptile Search Algorithm for WSN
使用 WSN 的多目标信任中心爬行动物搜索算法进行基于安全集群的路由
- DOI:
- 发表时间:
2023 - 期刊:
- 影响因子:0
- 作者:
Seresane Venkata;Krishna Reddy;Jayanthi Keshava Murthy - 通讯作者:
Jayanthi Keshava Murthy
An improved dummy generation approach for infeasible regions
一种改进的不可行区域虚拟生成方法
- DOI:
10.1007/s10489-022-04379-2 - 发表时间:
2023 - 期刊:
- 影响因子:5.3
- 作者:
S. Siddiqie;Anirban Mondal;Krishna Reddy - 通讯作者:
Krishna Reddy
An ion-independent intermediate underlies the evolutionary switch between sodium and proton-coupled glutamate transporter homologues
- DOI:
10.1016/j.bpj.2023.11.1156 - 发表时间:
2024-02-08 - 期刊:
- 影响因子:
- 作者:
Krishna Reddy;Burha Rasool;Olga Boudker - 通讯作者:
Olga Boudker
Krishna Reddy的其他文献
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{{ truncateString('Krishna Reddy', 18)}}的其他基金
Collaborative Research: Development of Novel Chitosan-Biochar-Bentonite Composite Barrier Resilient to Changing Climate: Synthesis, Characterization, and Containment Mechanisms
合作研究:开发适应气候变化的新型壳聚糖-生物炭-膨润土复合屏障:合成、表征和遏制机制
- 批准号:
2225303 - 财政年份:2022
- 资助金额:
$ 23.38万 - 项目类别:
Standard Grant
GOALI: Innovative Biochar-Slag-Soil Cover System for Zero Emissions at Landfills
GOALI:创新的生物炭-矿渣-土壤覆盖系统,实现垃圾填埋场零排放
- 批准号:
1724773 - 财政年份:2017
- 资助金额:
$ 23.38万 - 项目类别:
Standard Grant
EAPSI: Regulation of Neuronal Communication by Protein Lipid Modifications
EAPSI:通过蛋白质脂质修饰调节神经元通讯
- 批准号:
1515360 - 财政年份:2015
- 资助金额:
$ 23.38万 - 项目类别:
Fellowship Award
Modeling Coupled Dynamic Processes in Landfills: Holistic Long-Tern Performance Management to Improve Sustainability
垃圾填埋场耦合动态过程建模:整体长期绩效管理以提高可持续性
- 批准号:
1537514 - 财政年份:2015
- 资助金额:
$ 23.38万 - 项目类别:
Standard Grant
Sustainable Biocover System for Methane Oxidation in Landfills
垃圾填埋场甲烷氧化的可持续生物覆盖系统
- 批准号:
1200799 - 财政年份:2012
- 资助金额:
$ 23.38万 - 项目类别:
Standard Grant
First US-India Workshop on Global Geoenvironmental Engineering Challenges; in conjunction with 6th International Congress on Environmental Geotechnics (6ICEG); November 2010; India
第一届美印全球地球环境工程挑战研讨会;
- 批准号:
1045516 - 财政年份:2010
- 资助金额:
$ 23.38万 - 项目类别:
Standard Grant
Remediation of Contaminated Subsurface Using Nanoscale Iron Particles
使用纳米级铁颗粒修复受污染的地下
- 批准号:
0727569 - 财政年份:2007
- 资助金额:
$ 23.38万 - 项目类别:
Standard Grant
GOALI: Field Monitoring and Performance Evaluation of Four Bioreactor Landfills
GOALI:四个生物反应器垃圾填埋场的现场监测和性能评估
- 批准号:
0600441 - 财政年份:2006
- 资助金额:
$ 23.38万 - 项目类别:
Standard Grant
U.S.-Korea Cooperative Research: Electrokinetic-Enhanced Bioremediation of Metal-Contaminated Soils
美韩合作研究:金属污染土壤的电动增强生物修复
- 批准号:
0425994 - 财政年份:2004
- 资助金额:
$ 23.38万 - 项目类别:
Standard Grant
Workshop on Emerging Geoenvironmental Engineering Technologies for Pollution Control and Remediation
污染控制与修复新兴地质环境工程技术研讨会
- 批准号:
0335343 - 财政年份:2003
- 资助金额:
$ 23.38万 - 项目类别:
Standard Grant
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