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- W4385725535 endingPage "165970" @default.
- W4385725535 startingPage "165970" @default.
- W4385725535 abstract "Electrokinetic remediation (EKR) technology is a promising method to remove heavy metals from low permeability soil, because it is environmentally friendly, efficient and economical, and can realize in-situ remediation. In this paper, the basic principles and related physical and chemical phenomena of EKR are systematically summarized, and three limiting problems of EKR technology are put forward: the weak ability of dissolving metals, focusing effect, and energy consumption. There are many methods to solve these technical problems, but there is a lack of systematic summary of the causes of problems and solutions. Based on various enhanced EKR technologies, this paper summarizes the main ideas to solve the limiting problems. The advantages and disadvantages of each technology are compared, which has guiding significance for the development of new technology in the future. This paper also discusses the dissolution of residual heavy metals, which is rare in other articles. The energy consumption of EKR and the remediation effect are equally important, and both can be used as indicators for evaluating the feasibility of new technologies. This paper reviews the influence of various electric field conditions on power consumption, such as renewable energy supply, new electrode materials and electrode configurations, suitable voltage values and functional electrolytes. In addition, a variety of energy consumption calculation methods are also introduced, which are suitable for ohmic heat loss, energy distribution when there is non-target ion competition, and power consumption of specific ions in various metal ions. Researchers can make selective reference according to their actual situations. This paper also systematically introduces the engineering design and cost calculation of EKR, lists the research progress of some engineering cases and pilot-scale tests, analyzes the reasons why it is difficult to apply EKR technology in large-scale engineering at present, and puts forward the future research direction." @default.
- W4385725535 created "2023-08-11" @default.
- W4385725535 creator A5023796474 @default.
- W4385725535 creator A5037989560 @default.
- W4385725535 creator A5066914924 @default.
- W4385725535 creator A5069345693 @default.
- W4385725535 creator A5086191722 @default.
- W4385725535 creator A5087469652 @default.
- W4385725535 date "2023-12-01" @default.
- W4385725535 modified "2023-10-14" @default.
- W4385725535 title "Electrokinetic remediation for the removal of heavy metals in soil: Limitations, solutions and prospection" @default.
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