厨余垃圾腐殖化过程中胡敏酸对石油烃污染土壤生物降解的影响OA
Effect of humic acid on biodegradation of petroleum hydrocarbon-contaminated soil during humification of kitchen waste
微生物修复是一种经济且环境友好的方法,可用于降解污染土壤中的石油烃.然而,由于土壤中02含量较低,微生物活性受到限制,导致修复周期较长,从而限制了生物修复的广泛应用.探讨了厨余垃圾在不同堆肥阶段产生的胡敏酸对污染土壤中石油烃微生物降解的影响.结果显示:经过35 d的反应,添加堆肥28 d产物的实验组(H-28)中,石油烃降解率达到(79.82±1.03)％,半衰期为14.9 d;而未添加厨余垃圾堆肥产物的对照(CK)组中,石油烃降解率仅为(41.13±0.05)％,半衰期为46.3 d.这主要是因为堆肥28 d后(H-28)的产物中,胡敏酸的酚类和醌类物质含量达到最高,表现出更强的氧化还原能力,从而显著提升了石油烃污染土壤中脱氢酶和H2O2酶的活性.因此,厨余垃圾堆肥产物中的胡敏酸可作为一种有效的生物修复激活剂,以用于提高石油烃污染土壤的修复效率.
Bioremediation is regarded as an economical and environmentally sustainable approach for degrading total petroleum hydrocarbons in contaminated soils.However,due to limited oxygen in the soil,microbial activity is restricted and remediation periods are prolonged,which limits the broader application of bioremediation.This study examined the effect of humic acid derived from kitchen waste composting products at various composting stages on the microbial degradation of petroleum hydrocarbons in soil.After 35 days of incubation,the degradation rate of petroleum hydrocarbons in the H-28 group(H-28),with composted KWCP reached(79.82±1.03)％,with a half-life of 14.9 d,while the CK group(without KWCP)showed only(41.13±0.05)％degradation and a half-life of 46.3 d.This enhanced degradation was primarily attributed to the high concentrations of phenols and quinones in the 28-day(H-28)compost product,which exhibited superior redox capacity.This capacity significantly improved the activity of dehydrogenase and catalase in petroleum hydrocarbon-contaminated soil.Therefore,humic acid in kitchen waste compost products can serve as an effective activator to improve the remediation efficiency of petroleum hydrocarbon-contaminated soil.
周皓杰;宋天顺;谢婧婧
南京工业大学 生物与制药工程学院,江苏南京 211800南京工业大学 生物与制药工程学院,江苏南京 211800南京工业大学 生物与制药工程学院,江苏南京 211800
生物科学
石油烃降解胡敏酸厨余垃圾堆肥
petroleum hydrocarbon degradationhumic acidkitchen wastecomposting
《生物加工过程》 2026 (2)
169-176,8
南京市建设行业科研计划(Ks2133)
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