Hu Rong, Huang Jian-Bo, Yang Zhou-Ping, Cheng Zi-Zhang, Jing De-Jun, Huang Qian-Ming
College of Biology and Science, Sichuan Agricultural University, Ya' an 625014, Sichuan, China.
Ying Yong Sheng Tai Xue Bao. 2011 Dec;22(12):3293-9.
With a shaker, this paper studied the characteristics of the biosorption of crystal violet and malachite green by Rhodotorula graminis Y-5 under different adsorption time, initial pH, and temperature, as well as the desorption and recycling use of the dyes. The biosorption of crystal violet and malachite green by R. graminis Y-5 had the peaks (93.8% and 87.7%, respectively) at pH 7.0, dye concentration 50 mg x L(-1), 150 r x min(-1), 30 degrees C, and lasting 10 hours. After desorption, the biosorption rate of crystal violet and malachite green by R. graminis was 85.5% and 78.5%, respectively, indicating that the biosorption of crystal violet and malachite green was reversible, and the recycling use of the dyes by R. graminis was quite good, i. e., the dyes were renewable and could be recycled. Biosorption could be the mechanism of the decolorization of the dyes. The dyes were mostly adsorbed on the R. graminis surface -OH. The adsorption process was fast, efficient, and reversible, suggesting that R. graminis had a high potential for waste water treatment.
本文利用振荡器研究了禾本科红酵母Y-5在不同吸附时间、初始pH值和温度下对结晶紫和孔雀石绿的生物吸附特性，以及染料的解吸和循环利用情况。禾本科红酵母Y-5对结晶紫和孔雀石绿的生物吸附在pH值为7.0、染料浓度为50 mg·L⁻¹、转速为150 r·min⁻¹、温度为30℃且持续10小时的条件下达到峰值（分别为93.8%和87.7%）。解吸后，禾本科红酵母对结晶紫和孔雀石绿的生物吸附率分别为85.5%和78.5%，表明结晶紫和孔雀石绿的生物吸附是可逆的，禾本科红酵母对染料的循环利用效果良好，即染料具有可再生性且可循环利用。生物吸附可能是染料脱色的机制。染料主要吸附在禾本科红酵母表面的-OH上。吸附过程快速、高效且可逆，表明禾本科红酵母在废水处理方面具有很高的潜力。
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