上流式生物柱系统中固定化嗜水气单胞菌生物量对铅的生物吸附：过程优化的析因设计。
Biosorption of lead using immobilized Aeromonas hydrophila biomass in up flow column system: factorial design for process optimization.
机构信息
Water Pollution Research Laboratory, Department of Applied Chemistry, Institute of Technology, Banaras Hindu University, Varanasi 221005, India.
出版信息
J Hazard Mater. 2010 May 15;177(1-3):312-22. doi: 10.1016/j.jhazmat.2009.12.034. Epub 2009 Dec 28.
Free and immobilized biomass of Aeromonas hydrophila has been utilized for the removal of Pb(II) from aqueous solution. Fitness of Langmuir sorption model to the sorption data indicated the sorption was monolayer and uptake capacity of biomass was 163.9 and 138.88 mg/g for the free and immobilized biomass respectively. 85.38% Pb(II) removal was achieved at bed height of 19 cm and flow rate of 2 mL/min and BDST model was in a good agreement with the experimental results (r(2)>0.997). An attempt has been made to optimize the process conditions for the maximum removal using Central Composite Design with the help of Minitab 15 software and the result predicted by optimization plots was 88.27% which is close to the experimental data i.e. 85.38%. Sorption-desorption studies revealed that polysulfone immobilized biomass could reused up to 16 cycles and bed was completely exhaust after 33 cycles.
已利用自由态和固定化气单胞菌生物量从水溶液中去除 Pb(II)。Langmuir 吸附模型拟合吸附数据的结果表明，吸附为单层，自由态和固定化生物量的吸附容量分别为 163.9 和 138.88 mg/g。在床高为 19 cm 和流速为 2 mL/min 的条件下，可实现 85.38%的 Pb(II)去除，BDST 模型与实验结果吻合较好（r(2)>0.997）。利用 Minitab 15 软件的中心复合设计尝试优化最大去除率的工艺条件，优化图预测的结果为 88.27%，接近实验数据，即 85.38%。吸附-解吸研究表明，聚砜固定化生物量可重复使用 16 次，在 33 次循环后，床层完全耗尽。
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