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过氧化氢及类芬顿试剂对土壤碳、氮和微生物的影响
周 洋1, 邓亚梅2, 朱凤晓2, 赵广超1, 方国东2, 王荣富3, 周东美2
1.安徽师范大学环境科学与工程学院;2.中国科学院土壤环境与污染修复重点实验室(南京土壤研究所);3.安徽农业大学资源与环境学院
摘要:
基于过氧化氢(H2O2)的芬顿或类芬顿试剂被广泛应用于有机污染土壤的修复,但其对土壤基本性质及微生物群落的影响研究较少。本文以H2O2和不同的芬顿体系为研究对象,系统考察了H2O2、V2O3/H2O2、柠檬酸铁/H2O2体系对土壤有机质、铵态氮、硝态氮及微生物的影响。结果表明:H2O2在土壤中快速被分解,同时伴随着土壤有机质含量的显著下降和铵态氮含量的显著升高,土壤硝态氮含量变化不明显。高通量测序分析发现,H2O2和芬顿试剂显著降低了土壤微生物的多样性。
关键词:  H2O2  类芬顿  土壤性质  微生物多样性  群落结构
DOI:10.13758/j.cnki.tr.2020.05.014
分类号:X53
基金项目:江苏省杰出青年基金项目(BK20170050)和国家重点研发计划课题(2017YFA0207001)资助。
Effect of Hydrogen Peroxide and Fenton-like Reagent on Soil Carban, Nitrogen and Microoganism
ZHOU Yang1, DENG Yamei2, ZHU Fengxiao2, ZHAO Guangchao1, FANG Guodong2, WANG Rongfu3, ZHOU Dongmei2
1.College of Environmental Science and Engineering, Anhui Normal University;2.Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences;3.School of Resources and Environment, Anhui Agricultural University
Abstract:
Hydrogen peroxide-based Fenton or Fenton-like reactions have been used extensively for the remediation of organic pollutants in the contaminated sites. However, the effects of H2O2 or Fenton reactions on soil properties and microbial communities are not fully understood. In this study, the effects of H2O2 and different Fenton reagents including H2O2, H2O2/V2O3 and H2O2/citrate chelated ferric on soil properties and microbial communities were studied. The results showed that H2O2 was decomposed quickly in soil accompanied with obvious degradation of soil organic matter (SOM), dramatic increase of soil ammonium nitrogen, and slight change of soil nitrate nitrogen. High-throughput sequencing was used to analyze microbial multi-samples and biome structure in soil, and it was found that H2O2 and Fenton reagents significantly reduced soil microbial diversity.
Key words:  H2O2  Fenton-like  Soil properties  Soil microbial diversity  Community structure

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