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当前位置: 首页 > 文章 > 石油污染土壤生物修复对土壤酶活性的影响 农业环境科学学报 2013 (06) 1178-1184
Position: Home > Articles > Effect of Soil Enzyme Activities During Bioremediation of Crude Oil-Contaminated Soil Journal of Agro-Environment Science 2013 (06) 1178-1184

石油污染土壤生物修复对土壤酶活性的影响

作  者：
王华金;朱能武;杨崇;党志;吴平霄
单  位：
华南理工大学环境与能源学院;工业聚集区污染控制与生态修复教育部重点实验室
关键词：
土壤;石油;生物修复;土壤酶活性;总石油烃
摘  要：
土壤酶活性是土壤微生物生物化学过程的综合反映。为了探究石油污染土壤生物修复过程中土壤酶活性变化规律研究,采用筛选和分离的3株对石油烃有良好降解效果的降解菌构建了混合菌体系,开展了石油污染土壤模拟生物修复实验,考察了不同修复时期土壤石油烃残留量、石油烃表观降解率以及四种土壤酶(脲酶、过氧化氢酶、脱氢酶、脂肪酶)活性的变化。结果表明,石油污染土壤经40d生物修复后,石油烃表观降解率达到64.4%。在石油污染土壤的生物修复过程中,脲酶活性在0～24d上升较快,24d后趋于稳定;过氧化氢酶和脱氢酶活性的变化规律相似,均在前期上升随后略有下降;脂肪酶活性有一个快速上升阶段(0～16d),而后又出现明显的下降。进一步统计分析表明,脲酶与石油烃残留量呈显著负相关性(r=-0.916,P<0.05);过氧化氢酶和脱氢酶活性与石油烃残留量呈极显著负相关性,相关系数分别为-0.974(P<0.01)和-0.969(P<0.01);而脂肪酶活性与石油烃残留量的相关性不显著(P>0.05)。
译  名：
Effect of Soil Enzyme Activities During Bioremediation of Crude Oil-Contaminated Soil
作  者：
WANG Hua-jin 1 , ZHU Neng-wu 1,2* , YANG Chong 1 , DANG Zhi 1,2 , WU Ping-xiao 1,2 (1. College of Environment and Energy, South China University of Technology, Guangzhou 510006; 2. Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou 510006)
关键词：
soil; crude oil; bioremediation; soil enzyme activity; total petroleum hydrocarbon
摘  要：
Soil enzyme activity comprehensively reflects the soil microorganism biochemical process. In order to explore the changes of soil enzyme activities during bioremediation of crude oil-contaminated soil,constructed crude oil degrading bacterial consortium were built with-three strains isolated from oil-contaminated soil, bioremediation experiments of crude oil-contaminated soil were conducted, and the change of total petroleum hydrocarbon(TPH), apparent degradation efficiencies and soil enzyme activities(urease, catalase, dehydrogenase and lipase)were examined during the crude oil-contaminated soil bioremediation. The results showed that the apparent degradation efficiency of crude oil reached 64.4% after 40 d of bioremediation. Urease activity rapidly increased during 0～24 d, then tended to be stable.The catalase activity and dehydrogenase activity increased in early stage then slightly declined. However, lipase activity had a rapid rise phase(0～16 d), then obviously slowed down. The results of statistical analysis showed that soil urease activity and TPH had significant negative relationship (-0.916, P<0.05). Catalase and dehydrogenase activities were both significantly correlated with soil TPH concentration, and their correlation coefficients were -0.974(P<0.01)and -0.969(P<0.01), respectively. However, soil lipase activity did not have significant correlation-ship with TPH(P>0.05). Therefore, soil enzyme activities are potential valuable indicators of oil biodegradation.

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