生物修复油性海水的最佳条件。
Optimal conditions for bioremediation of oily seawater.
机构信息
School of Civil Engineering, Universiti Sains Malaysia, 14300 Nibong Tebal, Penang, Malaysia.
出版信息
Bioresour Technol. 2010 Dec;101(24):9455-60. doi: 10.1016/j.biortech.2010.07.077. Epub 2010 Jul 22.
To determine the influence of nutrients on the rate of biodegradation, a five-level, three-factor central composite design (CCD) was employed for bioremediation of seawater artificially contaminated with crude oil. Removal of total petroleum hydrocarbons (TPH) was the dependent variable. Samples were extracted and analyzed according to US-EPA protocols. A significant (R(2)=0.9645, P<0.0001) quadratic polynomial mathematical model was generated. Removal from samples not subjected to optimization and removal by natural attenuation were 53.3% and 22.6%, respectively. Numerical optimization was carried out based on desirability functions for maximum TPH removal. For an initial crude oil concentration of 1g/L supplemented with 190.21 mg/L nitrogen and 12.71 mg/L phosphorus, the Design-Expert software predicted 60.9% hydrocarbon removal; 58.6% removal was observed in a 28-day experiment.
为了确定营养物质对生物降解速率的影响，采用五水平三因子中心组合设计（CCD）对受原油污染的海水进行生物修复。总石油烃（TPH）的去除率为因变量。根据美国环保署的协议对样品进行提取和分析。生成了一个显著的（R²=0.9645，P<0.0001）二次多项式数学模型。未进行优化的样品去除率和自然衰减去除率分别为 53.3%和 22.6%。基于最大 TPH 去除的理想函数进行了数值优化。对于初始浓度为 1g/L 的原油，添加 190.21mg/L 的氮和 12.71mg/L 的磷，Design-Expert 软件预测的烃类去除率为 60.9%；在 28 天的实验中观察到 58.6%的去除率。
Zotero 插件