Ozacar Mahmut, Sengil I Ayhan
Department of Chemistry, Science and Arts Faculty, Sakarya University, 54100 Sakarya, Turkey.
Bioresour Technol. 2005 May;96(7):791-5. doi: 10.1016/j.biortech.2004.07.011.
An attempt to alleviate the problem caused by the presence of metal complex dyes, mostly used in textile industries, in the textile effluents was undertaken. The effects of adsorbent particle size, pH, adsorbent dose, contact time and initial dye concentrations on the adsorption of metal complex dyes by pine sawdust was investigated. Acidic pH was favorable for the adsorption of metal complex dyes. A contact time of 120 min was required to reach the equilibrium. The experimental isotherm data were analyzed using the Langmuir, Freundlich and Temkin equations. The equilibrium data fit well the Langmuir isotherm. The monolayer adsorption capacities are 280.3 and 398.8 mg dye per g of pine sawdust for Metal Complex Blue and Metal Complex Yellow, respectively. The results indicate that pine sawdust could be employed as low-cost alternative to commercial activated carbon in aqueous solution for the removal of metal complex dyes.
人们尝试减轻纺织废水中金属络合染料（主要用于纺织工业）所造成的问题。研究了吸附剂粒径、pH值、吸附剂用量、接触时间和初始染料浓度对松木屑吸附金属络合染料的影响。酸性pH值有利于金属络合染料的吸附。达到平衡需要120分钟的接触时间。使用朗缪尔（Langmuir）、弗伦德利希（Freundlich）和坦金（Temkin）方程对实验等温线数据进行了分析。平衡数据很好地符合朗缪尔等温线。对于金属络合蓝和金属络合黄，每克松木屑的单层吸附容量分别为280.3和398.8毫克染料。结果表明，在水溶液中去除金属络合染料时，松木屑可作为商业活性炭的低成本替代品。
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