An Enhanced Electrokinetic/Waste Fe(OH)3 Permeable Reactive Barrier System for Soil Remediation in Sulfide Mine Areas

被引：2
|
作者：
Fan, Yifeng [1 ,2 ]
Tu, Lingyun [1 ]
Liao, Changjun [2 ]
Li, Qiujun [2 ]
Lu, Dengjun [1 ]
机构：
[1] Guangxi Univ, Coll Light Ind & Food Engn, Nanning 530004, Peoples R China
[2] Guangxi Bossco Environm Protect Technol Co Ltd, Nanning 530007, Peoples R China
来源：
SUSTAINABILITY | 2022年 / 14卷 / 22期
关键词：
electrokinetic remediation; ferric hydroxide; permeable reactive barrier; soil; sulfide mine areas; CONTAMINATED SOIL; HEAVY-METALS; ELECTRODE; CADMIUM; PB; CR; REMOVAL; AGENTS; EDDS; ACID;
D O I：
10.3390/su142215342
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Traditional electrokinetic (EK) technology can remove contaminants from soil, but the efficiency is generally low. This study reports on the combination of enhanced EK and a waste ferric hydroxide (Fe(OH)(3)) permeable reactive barrier (PRB) for the remediation of soil in sulfide mine areas. Hydroxyethylene diphosphonic acid (HEDP) and FeCl3 were used as a compound chelating agent. The experimental results showed that EK combined with PRB technology (95.32% Cd removal) was more effective than single EK in removing cadmium (Cd) from the contaminated soil, because of the compound chelating agent and PRB filled with sustainable Fe(OH)(3) adsorbent. Additionally, the application of PRB in combination with HEDP was able to increase the sulfate removal rate to 96.19%. The accumulated energy consumption of these two systems was 182.4 and 356 kWh/m(3), respectively, after EK remediation using PRB.
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页数：12
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