草酸青霉新分离株菌丝球对活性染料的生物吸附作用
Biosorption of reactive dyes by the mycelium pellets of a new isolate of Penicillium oxalicum.
作者信息
Zhang S J, Yang M, Yang Q X, Zhang Y, Xin B P, Pan F
机构信息
State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, P.R. China.
出版信息
Biotechnol Lett. 2003 Sep;25(17):1479-82. doi: 10.1023/a:1025036407588.
Three reactive dyes were rapidly adsorbed by the mycelium pellets of Penicillium oxalicum. Dye removal of Reactive Blue 19 was up to 60% in 10 min and 91% in 80 min. Dye adsorption isotherms fitted Langmuir model well and the maximum adsorption capacities at 20 degrees C were calculated to be 160 mg g(-1) for Reactive Blue 19, 122 mg g(-1) for Reactive Red 241 and 137 mg g(-1) for Reactive Yellow 145, respectively. The pellets exhibited a high dye adsorption capacity (80-180 mg g(-1)) for all of the 3 dyes over a wide pH range (pH 2-10), and the maximum adsorption was obtained at pH 2. The adsorption capacity was mildly increased by increasing salinity.
三种活性染料能被草酸青霉的菌丝球快速吸附。活性蓝19在10分钟内的染料去除率高达60%，80分钟内可达91%。染料吸附等温线与朗缪尔模型拟合良好，20℃时活性蓝19、活性红241和活性黄145的最大吸附量分别计算为160 mg g⁻¹、122 mg g⁻¹和137 mg g⁻¹。在较宽的pH范围（pH 2 - 10）内，菌丝球对所有三种染料都表现出较高的染料吸附容量（80 - 180 mg g⁻¹），且在pH 2时获得最大吸附量。通过增加盐度，吸附容量略有增加。
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