West Bengal Pollution Control Board, Paribesh Bhawan, Kankinara 743126, India.
J Hazard Mater. 2009 Dec 15;172(1):485-90. doi: 10.1016/j.jhazmat.2009.06.156. Epub 2009 Jul 4.
Rhizopus oryzae biomass (ROB), depending on the age of the culture has been found to adsorb lindane, an organochloro pesticide from its aqueous solution to the extent of 63-90%. The adsorption process does not depend on the pH of the solution or incubation temperature and is very rapid during the first 15 min and reaches equilibrium within 60 min following pseudo-second-order rate model. The adsorption capacity of 1g ROB towards lindane is 107.5 microg as calculated from pseudo-second-order curve. The equilibrium isotherm data better fit to Freundlich (R=0.98) than Langmuir model (R=0.54). Removal of lipids from ROB with organic solvents reduces its adsorption capacity by 55-68% indicating the importance of hydrophobic interaction in the present adsorption process. SEM-EDX analysis reveals that lindane is adsorbed on the biomass. This study shows that ROB may be a good biosorbent for the removal of lindane from water.
米根霉生物量（ROB），根据培养物的年龄不同，从其水溶液中吸附林丹（一种有机氯农药）的程度为 63-90%。吸附过程不依赖于溶液的 pH 值或孵育温度，在前 15 分钟内非常迅速，并在遵循拟二级速率模型 60 分钟内达到平衡。根据拟二级曲线计算，1g ROB 对林丹的吸附容量为 107.5μg。平衡等温线数据更符合 Freundlich 模型（R=0.98），而不是 Langmuir 模型（R=0.54）。用有机溶剂去除 ROB 中的脂质会使其吸附能力降低 55-68%，表明疏水性相互作用在目前的吸附过程中很重要。SEM-EDX 分析表明林丹被吸附在生物量上。本研究表明，ROB 可能是一种从水中去除林丹的良好生物吸附剂。
