| 亚铁活化次氯酸钠降解土壤中阿特拉津 |
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| 引用本文： | 黄凤莲,邹璇,陈灿,钟振宇,李小明,万勇,刘婉蓉. 亚铁活化次氯酸钠降解土壤中阿特拉津[J]. 环境工程, 2021, 39(2): 160-165,172. DOI: 10.13205/j.hjgc.202102026 |
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| 作者姓名： | 黄凤莲 邹璇 陈灿 钟振宇 李小明 万勇 刘婉蓉 |
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| 作者单位： | 湖南省环境保护科学研究院,长沙410004;湖南省环境保护科学研究院,长沙410004;湖南大学环境科学与工程学院,长沙410082;湖南大学环境科学与工程学院,长沙410082;生态环境部固体废物与化学品管理技术中心,北京100029 |
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| 基金项目： | 国家重点研发计划（2018YFC1800400）。 |
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| 摘 要： | 通过考察NaClO添加量、n(Fe2+)∶n(NaClO)、反应时间、土壤pH、腐植酸与无机阴离子对阿特拉津降解效率的影响,对比Fe2+/NaClO氧化处理后土壤微生物群落的变化情况,探究了FeSO4活化NaClO对土壤中阿特拉津的降解性能.结果 表明:当NaClO添加量为10 mmol,n(Fe2+)∶n(NaClO...
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| 关 键 词： | 亚铁活化 次氯酸钠 阿特拉津 土壤修复 微生物群落 |
| 收稿时间： | 2020-02-28 |
DEGRADATION OF ATRAZINE BY FERROUS ACTIVATED SODIUM HYPOCHLORITE |
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| Affiliation: | 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 |
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| 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%. |
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