初始油浓度和分散剂对污染海水中原油生物降解的影响。
Effect of initial oil concentration and dispersant on crude oil biodegradation in contaminated seawater.
机构信息
School of Civil Engineering, Universiti Sains Malaysia, 14300 Nibong Tebal, Penang, Malaysia.
出版信息
Bull Environ Contam Toxicol. 2010 Apr;84(4):438-42. doi: 10.1007/s00128-010-9954-7. Epub 2010 Mar 12.
The effects of initial oil concentration and the Corexit 9500 dispersant on the rate of bioremediation of petroleum hydrocarbons were investigated with a series of ex-situ seawater samples. With initial oil concentrations of 100, 500, 1,000 and 2,000 mg/L, removal of total petroleum hydrocarbons (TPHs) with dispersant were 67.3%, 62.5%, 56.5% and 44.7%, respectively, and were 64.2%, 55.7%, 48.8% and 37.6% without dispersant. The results clearly indicate that the presence of dispersant enhanced crude oil biodegradation. Lower concentrations of crude oil demonstrated more efficient hydrocarbon removal. Based on these findings, bioremediation is not recommended for crude oil concentrations of 2,000 mg/L or higher.
用一系列的现场海水样本，研究了初始油浓度和分散剂 Corexit 9500 对石油烃生物修复速率的影响。初始油浓度为 100、500、1000 和 2000mg/L 时，添加分散剂处理的总石油烃（TPH）去除率分别为 67.3%、62.5%、56.5%和 44.7%，未添加分散剂时的去除率分别为 64.2%、55.7%、48.8%和 37.6%。结果清楚地表明，分散剂的存在增强了原油的生物降解。较低浓度的原油表现出更高效的烃类去除。基于这些发现，不建议对 2000mg/L 或更高浓度的原油进行生物修复。
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