Int J Phytoremediation. 2014;16(7-12):1241-56. doi: 10.1080/15226514.2013.828009.
Bioremediation of soil polluted by pentachlorophenol (PCP) is of great importance due to the persistence and carcinogenic properties of PCP. Phytoremediation has long been recognized as a promising approach for removal of PCP from soil. The present study was conducted to investigate the capability of four plant species; white clover, ryegrass, alfalfa, and rapeseed grown alone and in combination to remediate pentachlorophenol contaminated soil. After 60 days cultivation, white clover, raygrass, alfalfa, and rapeseed all significantly enhanced the degradation of PCP in soils. Alfalfa showed highest efficiency for the removal of PCP in single cropping flowed by rapeseed and ryegrass. Mixed cropping significantly enhanced the remediation efficiencies as compared to single cropping; about 89.84% of PCP was removed by mixed cropping of rapeseed and alfalfa, and 72.01% of PCP by mixed cropping of rape and white clover. Mixed cropping of rapeseed with alfalfa was however far better for the remediation of soil PCP than single cropping. An evaluation of soil biological activities as a monitoring mechanism for the bioremediation process of a PCP-contaminated soil was made using measurements of microbial counts and dehydrogenase activity.
由于五氯苯酚（PCP）的持久性和致癌性，受其污染土壤的生物修复具有重要意义。植物修复长期以来一直被认为是从土壤中去除 PCP 的一种很有前途的方法。本研究旨在探讨四种植物（白三叶草、黑麦草、紫花苜蓿和油菜）单独及组合种植修复五氯苯酚污染土壤的能力。经过 60 天的培养，白三叶草、黑麦草、紫花苜蓿和油菜均显著提高了土壤中 PCP 的降解能力。在单一种植中，紫花苜蓿对 PCP 的去除效率最高，其次是油菜和黑麦草。与单一种植相比，混合种植显著提高了修复效率；油菜和紫花苜蓿的混合种植去除了约 89.84%的 PCP，而油菜和白三叶草的混合种植去除了 72.01%的 PCP。然而，油菜与紫花苜蓿混合种植对土壤 PCP 的修复效果远优于单一种植。采用微生物计数和脱氢酶活性测量，对受 PCP 污染土壤的生物修复过程进行了土壤生物活性评估，作为生物修复过程的监测机制。
