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| STUDY ON THE REMEDIATION EFFECT OF CITRIC ACID, EDTA AND SAPONIN ON ARSENIC CONTAMINATED SOIL |
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Received:December 26, 2019
Revised:January 17, 2020
Accepted:January 21, 2020
Published Online:July 16, 2020
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| DOI： |
| KeyWord:arsenic contaminated soil； citric acid； EDTA； saponin; remediation |
| Author | Institution |
| YANG FEI |
BGRIMM MTC TECHNOLOGY Ltd. Co. |
| ZHAO SHUTING |
BGRIMM MTC TECHNOLOGY Ltd. Co. |
| SHI YEHONG |
BGRIMM MTC TECHNOLOGY Ltd. Co. |
| FENG XIANJIN |
BGRIMM MTC TECHNOLOGY Ltd. Co. |
| LI HUACHANG |
BGRIMM MTC TECHNOLOGY Ltd. Co. |
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| Abstract: |
| Arsenic pollution has become a serious problem in the world. Arsenic in soil, air and water is threatening crop production and human health. Remediating arsenic contaminated soil has become a research hotspot at home and abroad. Arsenic pollution also exists in copper smelting process. In this paper, a soil with serious arsenic pollution around a smelter in Jiangxi Province was taken as the research object. Through laboratory research, the effects of the concentration, liquid-soil ratio and extraction time of citric acid, EDTA and sapogenin on arsenic extraction were explored, and the causes were analyzed. The results showed that the arsenic extraction rate of citric acid, EDTA and sapogenin was related to their concentration, liquid-soil ratio and extraction time, and the comprehensive removal capacity was 50g/L citric acid, 40g/L sapogenin and 30g/L EDTA, respectively, which reached the highest extraction rate 68.54%、61.94%、55.70% when the liquid-soil ratio was 20mL/g and extraction time was 24h. This study can provide technical reference for arsenic contaminated soil remediation. |
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