Degradation of Trichloroethylene in Groundwater Using Iron Catalyzed Calcium Peroxide Systems

• Published in: E3S web of conferences Vol. 143; p. 2046
• Main Authors: Zhang, Kegang, Wang, Xiaodong, Zhang, Xiaohui, Peng, Shengjie
• Format: Journal Article
• Language: English
• Published: EDP Sciences 01-01-2020
• ISSN: 2267-1242; 2267-1242
• DOI: 10.1051/e3sconf/202014302046

The application of calcium peroxide (CaO
2
) activated with ferrous ion chelate sodium citrate （TCD）to stimulate the degradation of trichloroethylene (TCE) was investigated. The experimental results show that the removal efficiency of TCE increases first and then decreases with the increase of CaO
2
and Na
2
S
2
O
8
dosage; the chelation ratio of Fe(II)/TCD, too much or too little, will affect the removal efficiency of TCE; when the molar ratio of CaO
2
/ Fe(II)/ TCD/ TCE is 18/6/6/1, the removal efficiency of TCE is the highest, reaching 97.99% within 200Min. The results demonstrated that the technique of CaO
2
activated with ferrous ion is a highly promising technique in in situ chemical oxidation (ISCO) remediation in TCE contaminated sites.