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Impact of seeding bacteria, tillage, and addition nutrients on bioremediation of oil-contaminated soil

机译:种子细菌,耕作和添加营养对油污土生物修复的影响

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This paper is dedicated to the effect of adding high-efficiency hydrocarbon-degrading bacteria into the petroleum-polluted soil on its bioremediation process, with the soil in Yan an, north Shanxi as the research object. The biodegradation rates of petroleum hydrocarbons, bacteria count and half-life of petroleum hydrocarbons were studied for three different experimental conditions: (1) Injecting of microbes into the soil;(2) tilling combined inoculum;(3) adding nutrients combined inoculum .The result showed that inoculum promoted the biodegradation rate and increased bacteria number, the oil removal efficiency were 73.4%, increasing 17% than the control, and half-life of petroleum hydrocarbons shortened from 52 days to 9 days;under tilling combined inoculum condition, bacteria number increased, the oil removal efficiency were 96.7%, increasing 23.3% than the control, and half-life of petroleum hydrocarbons shortened from 9 days to 5 days;under adding nutrients and inoculum condition, bacteria number increased,the oil removal efficiency were 87 %,increasing 13.6% than the control, and half-life of petroleum hydrocarbons shortened from 9 days to 6 days. It is quite clear that tilling combined inoculums comprehensive bioremediation promotes the biodegradation rate and shortens the half-life of the petroleum contaminants in polluted soil.
机译:本文致力于将高效碳氢化合物降解细菌添加到石油污染土壤中的生物修复过程中的效果,尤安,北山西作为研究对象。研究了石油烃,石油烃的细菌数和半衰期的生物降解率,进行了三种不同的实验条件:(1)将微生物注射到土壤中;(2)耕作鞘内;(3)加入营养成分组合。结果表明,接种物促进了生物降解率和细菌数增加,除油效率为73.4%,比对照增加17%,石油烃的半衰期从52天缩短到9天;在耕作耕种中,细菌数量增加,除油效率为96.7%,增长23.3%,比对照,石油烃的半衰期从9天至5天缩短;在增加营养和接种条件下,细菌数量增加,除油效率增加了87 %,增长比对照增加13.6%,石油烃的半衰期从9天缩短至6天。非常清楚的是,耕种组合的接种综合生物修复促进了生物降解率,缩短了污染土壤中石油污染物的半衰期。

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