Kumari Kumud, Abraham T Emilia
Regional Research Laboratory, Council for Scientific and Industrial Research, Thiruvananthapuram, Kerala 695 019, India.
Bioresour Technol. 2007 Jul;98(9):1704-10. doi: 10.1016/j.biortech.2006.07.030. Epub 2006 Sep 25.
The nonviable biomass of Aspergillus niger, Aspergillus japonica, Rhizopus nigricans, Rhizopus arrhizus, and Saccharomyces cerevisiae were screened for biosorption of textile dyes. The selected anionic reactive dyes were C.I. Reactive Black 8, C.I. Reactive Brown 9, C.I. Reactive Green 19, C.I. Reactive Blue 38, and C.I. Reactive Blue 3. Experiments were conducted at initial dye concentration of 50, 100, 150 and 200mg/L. The effect of initial dye concentration, dose of biosorbent loading, temperature, and pH on adsorption kinetics was studied. S. cerevisiae and R. nigricans were good biosorbents at initial dye concentration of 50mg/L, 1g% (w/v) biomass loading and 29+/-1 degrees C. R. nigricans adsorbed 90-96% dye in 15min, at 20 degrees C and pH 6.0. The data showed an optimal fit to the Langmuir and Freundlich isotherms. The maximum uptake capacity (Q(o)) for the selected dyes was in the range 112-204mg/g biomass.
对黑曲霉、日本曲霉、黑根霉、少根根霉和酿酒酵母的无活性生物质进行了纺织染料生物吸附筛选。所选的阴离子活性染料为C.I.活性黑8、C.I.活性棕9、C.I.活性绿19、C.I.活性蓝38和C.I.活性蓝3。实验在初始染料浓度为50、100、150和200mg/L的条件下进行。研究了初始染料浓度、生物吸附剂负载量、温度和pH对吸附动力学的影响。在初始染料浓度为50mg/L、生物质负载量为1g%（w/v）且温度为29±1℃时，酿酒酵母和黑根霉是良好的生物吸附剂。在20℃和pH 6.0条件下，黑根霉在15分钟内吸附了90-96%的染料。数据显示与朗缪尔等温线和弗伦德利希等温线拟合良好。所选染料的最大吸附容量（Q(o)）在112-204mg/g生物质范围内。
