首页> 外文期刊>Waste management & research >Organic wastes to enhance phyto-treatment of diesel-contaminated soil
【24h】

Organic wastes to enhance phyto-treatment of diesel-contaminated soil

机译:有机废物可增强对柴油污染土壤的植物处理

获取原文
获取原文并翻译 | 示例
获取外文期刊封面目录资料

摘要

Toxic inorganic and organic chemicals are major contributors to environmental contamination and pose major health risks to human population. In this work, Dracaena reflexa and Podocarpus polystachyus were investigated for their potential to remove hydrocarbons from 2.5% and 1% diesel fuel-contaminated soil amended individually with 5% organic wastes (tea leaf, soy cake and potato skin) for a period of 270 days. Loss of 90% and 99% oil was recorded in soil contaminated with 2.5% and 1% oil with soy cake amendment, respectively, compared with 52% and 62% in unamended soil with D. reflexa at the end of 270 days. Similarly, 84% and 91% oil loss was recorded for P. polystachyus amended with organic wastes in 2.5% and 1% oil, respectively. Diesel fuel disappeared more rapidly in the soil amendment with SC than in other organic waste supplementation. It was evident that plants did not accumulate hydrocarbon from the soil, while the number of hydrocarbon-utilizing bacteria was high in the rhizosphere, thus suggesting that the mechanism of the oil degradation was rhizodegradation. The kinetic model result indicated a high rate of degradation in soil amendment with SC at 1% with D. reflexa compared with other treatments. Thus, a positive relationship was observed between diesel hydrocarbon degradation with plant biomass production. Dracaena reflexa with organic wastes amendment has a greater potential of restoring hydrocarbon-contaminated soil compared to P. polystachyus plant.
机译:有毒的无机和有机化学物质是造成环境污染的主要因素,对人类健康构成重大威胁。在这项工作中,对龙血树和罗汉松进行了研究,研究了它们从2.5%和1%柴油污染的土壤中去除碳氢化合物的可能性,这些土壤分别用5%的有机废物(茶叶,大豆饼和土豆皮)进行了270年的改良。天。在270天结束时,经豆饼改良剂污染的2.5%和1%的油污染的土壤分别记录有90%和99%的油损失,相比之下,在D. reflexa的未改良土壤中分别损失了52%和62%。同样,用有机废物在2.5%和1%的油中修正的多角腐霉(P. polystachyus)分别记录有84%和91%的油损失。与其他有机废物补充剂相比,添加SC的土壤改良剂中柴油的消失速度更快。显然,植物没有从土壤中积累碳氢化合物,而根际中利用碳氢化合物的细菌数量很高,这表明油的降解机理是根际分解。动力学模型结果表明,与其他处理相比,D。reflexa的SC改良土壤改良剂降解率为1%。因此,观察到柴油烃降解与植物生物量产生之间的正相关。与P. polystachyus植物相比,带有有机废物改良剂的龙血树具有恢复碳氢化合物污染土壤的更大潜力。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号