Department of Marine Biotechnology, University of Maryland Baltimore County and Institute of Marine & Environmental Technology, University of Maryland, Baltimore, MD, USA.
Curr Opin Biotechnol. 2013 Jun;24(3):482-8. doi: 10.1016/j.copbio.2012.10.004. Epub 2012 Oct 23.
The remediation of polychlorinated biphenyls (PCBs) in soils and sediments remains a particularly difficult problem to solve. The possibility of in situ degradation by microorganisms has been pursued for many years since this approach has the potential to provide a cost-effective and environmentally sustainable alternative to dredging for treatment of PCB impacted sites. Being hydrophobic, PCBs partition into organic material and accumulate in anoxic environments well poised to support anaerobic dechlorination of highly chlorinated congeners; products of which are susceptible to complete aerobic degradation. Laboratory research over the past 25 years is now leading to new microbial technologies that could soon be tested for treatment of PCB impacted sediments in the field.
多氯联苯（PCBs）在土壤和沉积物中的修复仍然是一个特别难以解决的问题。由于这种方法具有替代疏浚处理 PCB 污染场地的成本效益和环境可持续性，因此多年来一直致力于通过微生物的原位降解来实现。由于 PCBs 具有疏水性，因此会分配到有机物质中，并在缺氧环境中积累，这非常有利于支持高度氯化同系物的厌氧脱氯；其产物易于完全有氧降解。过去 25 年的实验室研究现在正在引领新的微生物技术的发展，这些技术可能很快就会在现场处理 PCB 污染沉积物的领域进行测试。
