| 硝酸盐还原条件下对氯硝基苯的生物还原转化 |
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| 引用本文： | 査清云,吴锦华,李平,王向德,杨波.硝酸盐还原条件下对氯硝基苯的生物还原转化[J].环境工程学报,2012,6(7):2169-2172. |
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| 作者姓名： | 査清云 吴锦华 李平 王向德 杨波 |
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| 作者单位： | 1. 华南理工大学环境科学与工程学院,污染控制与生态修复广东省普通高等学校重点实验室,工业聚集区污染控制与生态修复教育部重点实验室,广州510006
2. 深圳大学化学与化工学院,深圳,518060 |
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| 基金项目： | 国家自然科学基金资助项目（50708039）；国家“863”高技术研究发展计划项目（2009AA063902）；中央高校基本科研业务费资助项目（2009zm0202）；教育部新教师基金（20070561011）；广东省自然科学基金资助项目（05300188） |
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| 摘 要： | 针对对氯硝基苯和硝酸盐复合污染问题,以乙醇作为共基质,通过间歇式实验,在基质充足和不足2种条件下考察了NO3-对对氯硝基苯还原过程影响。实验结果表明,在基质充足条件下,对氯硝基苯和NO3-还原过程不互相产生抑制作用。当初始COD浓度为100 mg/L,由于基质不足,NO3-对对氯硝基苯还原过程产生竞争性抑制作用,且抑制作用随着NO3-浓度升高而增强,当NO3-浓度为150 mg/L和300 mg/L时,与空白样相比对氯硝基苯还原速率分别下降20%和54%,且溶液中出现NO2-积累,浓度分别为33.68 mg/L和44.92 mg/L。当采用生物法修复氯硝基苯化合物和硝酸盐复合污染水体时,应考虑基质的供给和硝酸盐的影响。
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| 关 键 词： | 对氯硝基苯 硝酸盐 反硝化 |
Effect of nitrate reduction on the microbial reductive transformation of para-chloronitrobenzene |
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| Zha Qingyun,Wu Jinhu,Li Ping,Wang Xiangde and Yang Bo.Effect of nitrate reduction on the microbial reductive transformation of para-chloronitrobenzene[J].Techniques and Equipment for Environmental Pollution Control,2012,6(7):2169-2172. |
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| Authors: | Zha Qingyun Wu Jinhu Li Ping Wang Xiangde and Yang Bo |
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| Institution: | 1.Key Laboratory of Environmental Protection and Eco-Remediation of Guangdong Regular Higher Education Institutions, Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters,Ministry of Education, School of Environmental Science and Engineering,South China University of Technology,Guangzhou 510006,China; 2.School of Chemistry and Chemical Engineering,Shenzhen University,Shenzhen 518060,China) |
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| Abstract: | The effect of NO-3 on para-chloronitrobenzene(p-CNB) reduction was investigated under the conditions of sufficient substrate and insufficient substrate with batch experiments due to the combined pollution of p-CNB and NO-3.Ethanol was used as co-substrate.Both p-CNB reduction and NO-3 reduction proceeded successfully with sufficient substrate.However,p-CNB reduction was competitively inhibited by NO-3 when substrate was insufficient(COD=100 mg/L).The inhibiting effect enhanced as the NO-3 concentrations increased.p-CNB reduction rate decreased by 20% and 54% when compared to the control,as initial NO-3 concentrations were 150 mg/L and 300 mg/L,respectively.Nitrite accumulation was also observed with a concentration of 33.68 mg/L and 44.92 mg/L in the above tests.It indicated that the effects of co-substrate and nitrate should be taken into account when anaerobic biological treatment is applied for the remediation of chloronitrobenzenes contaminated waters. |
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| Keywords: | para-chloronitrobenzene nitrate denitrification |
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