Işik Mustafa, Sponza Delia Teresa
Department of Environmental Engineering, Engineering Faculty, Dokuz Eylul University, Buca Kaynaklar Campus, 35160, Izmir, Turkey.
Chemosphere. 2004 Apr;55(1):119-28. doi: 10.1016/j.chemosphere.2003.10.008.
Decolorization and inhibition kinetic characteristics of two azo dyes namely Reactive Black 5 (RB 5) and Direct Brown 2 (DB 2) were investigated with partially granulated anaerobic mixed culture using glucose (3000 mg l(-1) COD) as carbon source and electron donor during batch incubation. Monod, zero-, first-, and second-order reaction kinetic models were tested in order to determine the most suitable rate model of substrate and color removal kinetic. The course of the decolorization and substrate removal process approximates to first-order kinetic model under batch conditions. Decolorization, and substrate removal were achieved effectively under test conditions but ultimate removal of azo dyes and substrate were not observed at high dye concentrations. Aromatic amine and volatile fatty acid accumulation were observed proportionally at a higher azo dye concentration. A competitive kinetic model that describes the anaerobic co-metabolism of increasing RB 5 and DB 2 dye concentrations with glucose as co-substrate has been developed based on the experimental data.
在分批培养期间，以葡萄糖（3000 mg l(-1) COD）作为碳源和电子供体，使用部分颗粒化的厌氧混合培养物研究了两种偶氮染料即活性黑5（RB 5）和直接棕2（DB 2）的脱色和抑制动力学特性。测试了莫诺德、零级、一级和二级反应动力学模型，以确定最合适的底物去除速率模型和颜色去除动力学模型。在分批条件下，脱色和底物去除过程的进程近似于一级动力学模型。在测试条件下有效地实现了脱色和底物去除，但在高染料浓度下未观察到偶氮染料和底物的最终去除。在较高的偶氮染料浓度下，观察到芳香胺和挥发性脂肪酸成比例积累。基于实验数据，建立了一个竞争动力学模型，该模型描述了以葡萄糖作为共底物时，增加RB 5和DB 2染料浓度的厌氧共代谢过程。
