Department of Civil Engineering, Indian Institute of Technology Madras, Chennai 600036, India.
J Hazard Mater. 2009 Dec 30;172(2-3):606-17. doi: 10.1016/j.jhazmat.2009.07.043. Epub 2009 Jul 18.
Cr(VI) reduction studies were carried out with chromium reducing bacteria (CRB), sulphate reducing bacteria (SRB) and iron reducing bacteria (IRB), individually and in combination. Biokinetic parameters such as maximum specific growth rate (micro(max)), half saturation constant (K(s)), yield coefficient (Y(T)) and inhibition coefficient (K(i)) for individual cultures were evaluated. A mathematical model was proposed for simulating the chromium reduction, COD utilization and biomass growth, by individual cultures as well as by a combination of two or three different cultures, for different initial Cr(VI), SO(4)(2-) and Fe(III) concentrations. The biokinetic parameters evaluated from one set of experiments for individual cultures were utilized in all the validation studies. The performance of the mathematical model in terms of the dimensionless modified coefficient of efficiency (E) indicated that the proposed model simulates the system behavior very well.
进行了六价铬还原研究，使用了铬还原菌（CRB）、硫酸盐还原菌（SRB）和铁还原菌（IRB），分别进行了研究，并进行了组合研究。评估了单个培养物的生物动力学参数，如最大比生长速率（micro(max)）、半饱和常数（K(s)）、产率系数（Y(T)）和抑制系数（K(i)）。提出了一个数学模型，用于模拟单个培养物以及两种或三种不同培养物的组合对不同初始 Cr(VI)、SO(4)(2-)和 Fe(III)浓度的铬还原、COD 利用和生物量生长。在所有验证研究中，都使用了从一组单独培养物的实验中评估的生物动力学参数。从无量纲修正效率系数（E）的角度来看，该数学模型的性能表明，该模型很好地模拟了系统的行为。
