EFFECT OF DIFFERENT REMEDIATION METHODS ON THE DEGRADATION RATE OF PETROLEUM HYDROCARBON AND ENZYME ACTIVITY IN PETROLEUM CONTAMINATED SOIL

IF 0.6 4区环境科学与生态学 Q4 ECOLOGY

Applied Ecology and Environmental Research Pub Date : 2023-01-01 DOI:10.15666/aeer/2104_28192832

F. Xiao, B. Zhou, M. Duan, X. Chen

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Abstract

. In order to explore the effects of different remediation methods on the degradation rate of total petroleum hydrocarbons and enzyme activity in oil-contaminated soil, a study was conducted using six different treatments, including adding rhamnolipid (S), organic fertilizer (F), degradation bacteria (J), rhamnolipid + degrading bacteria (SJ), organic fertilizer + rhamnolipid (SF), and organic fertilizer + degradation bacteria (FJ), to remediate the oil-contaminated soil. The study examined the changes in the degradation rate of total petroleum hydrocarbons and the activity of four soil enzymes (urease, peroxidase, dehydrogenase, and lipase) at different cultivation times. The results showed that after 60 days of remediation, all treatments improved the degradation rate of total petroleum hydrocarbons in the contaminated soil. The best result was achieved with the FJ treatment, with a degradation rate of 31.72%. The enzyme activity in all treatments was significantly higher than that of the control at different cultivation periods. Statistical analysis showed that the activity of urease, peroxidase, and lipase was significantly negatively correlated with the residual rate of total petroleum hydrocarbons in the contaminated soil. The activity of dehydrogenase was highly significantly negatively correlated with the residual rate of total petroleum hydrocarbons in the contaminated soil.

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不同修复方法对石油污染土壤中石油烃降解速率及酶活性的影响

．为探讨不同修复方法对石油污染土壤中总石油烃降解速率和酶活性的影响，采用添加鼠李糖脂(S)、有机肥(F)、降解细菌(J)、鼠李糖脂+降解细菌(SJ)、有机肥+鼠李糖脂(SF)、有机肥+降解细菌(FJ) 6种不同处理对石油污染土壤进行修复。研究了不同栽培时间土壤中总石油烃降解率及脲酶、过氧化物酶、脱氢酶、脂肪酶4种土壤酶活性的变化。结果表明，经过60 d的修复，所有处理均提高了污染土壤中总石油烃的降解率。FJ处理效果最好，降解率为31.72%。各处理在不同培养时期的酶活性均显著高于对照。统计分析表明，脲酶、过氧化物酶和脂肪酶活性与污染土壤中总石油烃残留率呈显著负相关。脱氢酶活性与污染土壤中总石油烃残留率呈极显著负相关。

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来源期刊

Applied Ecology and Environmental Research ECOLOGY-ENVIRONMENTAL SCIENCES

CiteScore

1.40

自引率

14.30%

发文量

104

审稿时长

14 months

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