期刊
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
卷 22, 期 4, 页码 699-705出版社
WILEY
DOI: 10.1002/etc.5620220403
关键词
polychlorinated biphenyl; sandy soil; biodegradation; chemical pretreatment; kinetic
This article reports the results of various biodegradation experiments on polychlorinated biphenyl (PCB)-contaminated sandy soil employing a mixed culture of acclimatized bacteria. Following the optimization of different variables without chemical pretreatment. the elimination rate achieved of Aroclor(R) 1242 ill Slurry-phase reactors was 61 % after four months of treatment, with the presence of biphenyl as cosubstrate being the most important factor affecting PCB biodegradation. The biodegradation occurred as a first-order process, and it proved most effective in respect to dichlorinated biphenyls (100% removal), followed by trichlorinated (92%) and tetrachlorinated biphenyls (24%). The results also showed that the degradability of PCBs in soil may be enhanced by an advanced oxidation pretreatment (Fenton reaction), producing almost 100% elimination of PCBs at the end of the integrated chemical-biological process and 72% mineralization of the intermediates generated during the chemical pretreatment.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据