从水相中吸附溶解的活性红染料至由农业废料制备的活性炭上。
Adsorption of dissolved Reactive red dye from aqueous phase onto activated carbon prepared from agricultural waste.
作者信息
Senthilkumaar S, Kalaamani P, Porkodi K, Varadarajan P R, Subburaam C V
机构信息
Department of Chemistry, Faculty of Engineering, PSG College of Technology, Coimbatore 641 004, India.
出版信息
Bioresour Technol. 2006 Sep;97(14):1618-25. doi: 10.1016/j.biortech.2005.08.001. Epub 2005 Sep 22.
The adsorption of Reactive red dye (RR) onto Coconut tree flower carbon (CFC) and Jute fibre carbon (JFC) from aqueous solution was investigated. Adsorption studies were carried out at different initial dye concentrations, initial solution pH and adsorbent doses. The kinetic studies were also conducted; the adsorption of Reactive red onto CFC and JFC followed pseudosecond-order rate equation. The effective diffusion coefficient was evaluated to establish the film diffusion mechanism. Quantitative removal of Reactive red dye was achieved at strongly acidic conditions for both the carbons studied. The adsorption isotherm data were fitted well to Langmuir isotherm and the adsorption capacity were found to be 181.9 and 200 mg/g for CFC and JFC, respectively. The overall rate of dye adsorption appeared to be controlled by chemisorption, in this case in accordance with poor desorption studies.
研究了活性红染料（RR）从水溶液中吸附到椰树花碳（CFC）和黄麻纤维碳（JFC）上的情况。在不同的初始染料浓度、初始溶液pH值和吸附剂剂量下进行了吸附研究。还进行了动力学研究；活性红在CFC和JFC上的吸附遵循准二级速率方程。评估了有效扩散系数以确定膜扩散机制。在所研究的两种碳中，在强酸性条件下实现了活性红染料的定量去除。吸附等温线数据与朗缪尔等温线拟合良好，CFC和JFC的吸附容量分别为181.9和200 mg/g。染料吸附的总速率似乎受化学吸附控制, 在这种情况下，这与较差的解吸研究结果一致。
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