Biosorption of Pb(II) by Nonliving Lichen Biomass of Cladonia rangiformis Hoffm
Biosorption of Pb(II) by Nonliving Lichen Biomass of Cladonia rangiformis Hoffm
复制标题
Cladonia rangiformis Hoffm 非生命地衣生物量对 Pb(II) 的生物吸附
DOI：
10.22059/ijer.2012.509
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发表时间：
2012
影响因子：
3.2
通讯作者：
A. Çakıcı
中科院分区：
文献类型：
--
作者：
F. Ekmekyapar;A. Aslan;Y. Bayhan;A. Çakıcı
有毒金属的毒性极大，对环境的污染是一个严重的问题
对水生生物和人类的影响生物吸附是去除金属的传统工艺的替代技术。石蕊地衣生物量对Pb（II）离子的吸附在这项研究中提出。采用批式吸附实验研究了地衣生物质对Pb（II）的吸附性能，并考察了金属离子初始浓度、初始pH、吸附剂浓度、搅拌速度和接触时间对吸附效果的影响。最适pH值为5.0，即溶液的自然pH值。浓度范围为30至150 mg/L的Pb（II）进行了研究，金属离子的生物吸附去除效率为99.5%。在15 ℃下，用Freundlich吸附模型对吸附数据进行了拟合，并确定了回归常数。的
结果表明，石蕊生物质是一种较好的吸附剂，可用于去除水中的Pb（II）。
Environmental contamination by toxic metals is a serious problem due to their extreme toxicity
towards aquatic life and humans. Biosorption is an alternative technology to conventional processes for the removal of metals. Biosorption of Pb(II) ions on the lichen biomass of Cladonia rangiformis Hoffm. is presented in this research. Batch experiments were conducted to study the biosorption properties of lichen biomass for Pb(II) and the effects of initial metal ion concentration, initial pH, biosorbent concentration, stirring speed and contact time on biosorption efficiency. The optimum pH value was found out 5.0 which was the native pH value of solution. Concentrations ranging from 30 to 150 mg/L Pb(II) were studied and the biosorptive removal efficiency of the metal ions was obtained as 99.5%. The experimental biosorption data were fitted to the Freundlich adsorption model and the regression constants were determined at 15oC. The
results indicated that the biomass of Cladonia rangiformis is a suitable biosorbent for removing Pb(II) from aqueous solutions.