DEGRADATION OF ATRAZINE BY FERROUS ACTIVATED SODIUM HYPOCHLORITE

HUANG Feng-lian; ZOU Xuan; CHEN Can; ZHONG Zhen-yu; LI Xiao-ming; WAN Yong; LIU Wan-rong

doi:10.13205/j.hjgc.202102026

Volume 39 Issue 2

Jul. 2021

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2021 > 39(2): 160-165,172

HUANG Feng-lian, ZOU Xuan, CHEN Can, ZHONG Zhen-yu, LI Xiao-ming, WAN Yong, LIU Wan-rong. DEGRADATION OF ATRAZINE BY FERROUS ACTIVATED SODIUM HYPOCHLORITE[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(2): 160-165,172. doi: 10.13205/j.hjgc.202102026

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HUANG Feng-lian, ZOU Xuan, CHEN Can, ZHONG Zhen-yu, LI Xiao-ming, WAN Yong, LIU Wan-rong. DEGRADATION OF ATRAZINE BY FERROUS ACTIVATED SODIUM HYPOCHLORITE[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(2): 160-165,172. doi: 10.13205/j.hjgc.202102026

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DEGRADATION OF ATRAZINE BY FERROUS ACTIVATED SODIUM HYPOCHLORITE

doi: 10.13205/j.hjgc.202102026

1. Hunan Research Academy of Environmental Sciences, Changsha 410004, China;
2. College of Environmental Science and Engineering, Hunan University, Changsha 410082, China;
3. Solid Waste and Chemicals Management Center, Ministry of Environmental Protection, Beijing 100029, China

Received Date: 2020-02-28
Available Online: 2021-07-19

Abstract

Abstract

This study investigated the feasibility of atrazine degradation in soil by using Fe²⁺-activated hypochlorite (NaClO). The effect of main factors such as oxidant dosage, the Fe²⁺ to NaClO molar ratio, initial soil pH, etc. on the degradation of atrazine was considered. The results showed that after 8 h reaction, 82% of atrazine could be degraded when NaClO dosage was 10 mmol at Fe²⁺/NaClO molar ratio of 1:1. The degradation of atrazine followed the pseudo-first-order model. ESR result confirmed that the Fe²⁺/NaClO system yielded more HO· than that of NaOCl alone to participate in atrazine degradation. The Fe²⁺/NaClO process could operate over a wide pH range (3~9), while humic acid and inorganic anions (Cl^-, HCO₃^-) in the soil matrix had a negative effect on atrazine degradation. After the Fe²⁺/NaClO treatment, the soil microbial community was obviously affected, and the relative abundance of Proteobacteria rose from 25.46% to 72.73%.
- ferrous activation,
- sodium hypochlorite,
- atrazine,
- soil remediation,
- microbial community

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References

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