Decolorization and degradation of chrome black T simulated wastewater by Trichoderma koningiopsis were studied.The effects of reaction time,initial chrome black T concentration,bacteria dosage,glucose dosage,temperature and rotational speed on the degradation of chrome black T by Trichoderma koningiopsis were investigated with the removal efficiency of chrome black T as the index.The optimum conditions for the treatment of chrome black T by Trichoderma koningiopsis were determined by orthogonal experiments,and the treatment characteristics were studied.The results showed that the optimal conditions for the degradation of chrome black T simulated wastewater by Trichoderma koningiopsis were as follows:20 mg/L of initial chrome black T concentration,7.5 g/L of bacteria dosage,and 140 r/min of rotational speed,0.4 g/L of glucose as an additive carbon source,at 30 ℃ for 20 h.The removal efficiency of chrome black T could reach 96.8％under the optimum conditions,and the removal efficiency of mixed dye wastewater by Trichoderma koningiopsis could reach about 90％.Adsorption of chrome black T by Trichoderma koningiopsis belonged to homogeneous monolayer adsorption and belonged to first-order kinetics.The results showed that the treatment of chrome black T by Trichoderma koningiopsis was achieved through the synergistic effect of biological adsorption and degradation.
关键词
拟康宁木霉/铬黑T/生物降解/生物吸附/一级动力学
Key words
Trichoderma koningiopsis/chrome black T/biodegradation/biosorption/first-order kinetic
维普
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