强化电动法修复高浓度铬污染土壤

IF 0.7 4区地球科学 Q4 GEOSCIENCES, MULTIDISCIPLINARY

Earth Sciences Research Journal Pub Date : 2021-06-01 DOI:10.15446/ESRJ.V25N2.93896

Guo Lin, L. Jun, Chenxu Yao, Zhang Xiaocun

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引用次数: 0

摘要

如何引用项目郭，张，X.，陈，Y.，刘，J.（2021）。强化电动法修复高浓度铬污染土壤。《地球科学研究杂志》，25（2），247-253。DOI：https://doi.org/10.15446/esrj.v25n2.93896高浓度铬盐自生产以来对环境造成了严重污染。长期存在的铬残留污染了土壤，部分污染土壤的总铬浓度已达30000 mg/kg。针对铬污染土壤的修复，提出了强化电动法。为了提高铬污染土壤的电动修复效率，提出了两种强化电动修复技术：电动氧化强化修复技术和电动强化修复技术。氧化剂氧化铬污染土壤中的Cr（III），增加溶解Cr（VI）的含量，从而提高电修复的效率，以寻找合适的PRB介质作为提高修复效率的突破口。实验结果表明，与传统的电动技术相比，强化电动法能有效提高土壤中总铬的去除率，为强化电动修复铬污染土壤提供技术支持。pH控制系统使阳极和阴极电解质的pH始终保持酸性，H+的迁移速度比OH-的迁移速度快，阳极附近土壤的pH低于阴极附近。强化电动法修复高浓度铬污染土壤

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Remediation of high concentration chromium contaminated soil by Enhanced Electrodynamic Method

How to cite item Guo, L., Zhang, X., Chen, Y., & Liu, J. (2021). Remediation of high concentration chromium contaminated soil by Enhanced Electrodynamic Method. Earth Sciences Research Journal, 25(2), 247-253. DOI: https://doi.org/10.15446/ esrj.v25n2.93896 High concentration of chromium salt has caused serious pollution to the environment since its production. The longstanding chromium residue has polluted the soil, and the total chromium concentration of some polluted soil has reached 30000 mg / kg. For the remediation of chromium contaminated soil, the enhanced electrodynamic method was proposed. In order to improve the efficiency of electrokinetic remediation of chromium contaminated soil, two enhanced electrokinetic remediation technologies were proposed: Electrokinetic oxidation enhanced remediation technology and electrokinetic enhanced remediation technology. Cr (III) in soil was polluted by oxidant chromium oxide to increase the content of dissolved Cr (VI),so as to improve the efficiency of electric repair, in order to find a suitable PRB medium as a breakthrough to improve the repair efficiency. The experimental results show that compared with the traditional electrodynamic technology, the enhanced electrodynamic method can effectively improve the removal rate of total chromium in the soil, and provide technical support for the enhanced electrodynamic remediation of chromium contaminated soil. The pH control system makes the pH of anode and cathode electrolyte always maintain acidic, and the H+ migration speed is faster than that of OH-, and the pH of soil near the anode is lower than that near the cathode. ABSTRACT Remediation of high concentration chromium contaminated soil by Enhanced Electrodynamic Method

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来源期刊

Earth Sciences Research Journal 地学-地球科学综合

CiteScore

1.50

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： ESRJ publishes the results from technical and scientific research on various disciplines of Earth Sciences and its interactions with several engineering applications. Works will only be considered if not previously published anywhere else. Manuscripts must contain information derived from scientific research projects or technical developments. The ideas expressed by publishing in ESRJ are the sole responsibility of the authors. We gladly consider manuscripts in the following subject areas: -Geophysics: Seismology, Seismic Prospecting, Gravimetric, Magnetic and Electrical methods. -Geology: Volcanology, Tectonics, Neotectonics, Geomorphology, Geochemistry, Geothermal Energy, ---Glaciology, Ore Geology, Environmental Geology, Geological Hazards. -Geodesy: Geodynamics, GPS measurements applied to geological and geophysical problems. -Basic Sciences and Computer Science applied to Geology and Geophysics. -Meteorology and Atmospheric Sciences. -Oceanography. -Planetary Sciences. -Engineering: Earthquake Engineering and Seismology Engineering, Geological Engineering, Geotechnics.