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首页> 外文期刊>Journal of Polymers and the Environment >Biosorption of Malachite Green from Aqueous Solutions onto Polylactide/Spent Brewery Grains Films: Kinetic and Equilibrium Studies
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Biosorption of Malachite Green from Aqueous Solutions onto Polylactide/Spent Brewery Grains Films: Kinetic and Equilibrium Studies

机译：孔雀石绿从水溶液对聚丙交酯/废啤酒糟薄膜的生物吸附：动力学和平衡研究

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摘要

Batch experiments were conducted to study the biosorption of Malachite Green (MG) onto polylactide (PLA)/spent brewery grains (SBGs) films. Films were prepared by solvent-casting method using dichloromethane. Effects of contact time, pH, salt concentration, and optimal experimental condition was evaluated. At pH 6.89 and low salt concentration, Malachite Green was removed effectively. The isotherm data fitted the Freundlich model with 0.969 R2 value and 0.738 slope implying chemisorptions process. The biosorption process followed pseudo-second order kinetics with calculated adsorption capacity at equilibrium (qe) of 0.572 mg/g at 23 ℃. The investigation showed that PLA/SBGs films are effective in dye removal from textile, paper and leather industries effluents.
机译：进行批处理实验以研究孔雀石绿（MG）在聚丙交酯（PLA）/废啤酒糟（SBGs）膜上的生物吸附。使用二氯甲烷通过溶剂浇铸法制备膜。评估了接触时间，pH，盐浓度和最佳实验条件的影响。在pH 6.89和低盐浓度下，孔雀石绿被有效去除。等温线数据以0.969 R2值和0.738斜率拟合Freundlich模型，表明化学吸附过程。生物吸附过程遵循拟二级动力学，在23℃下的平衡吸附量（qe）为0.572 mg / g。调查表明，PLA / SBGs膜可有效去除纺织，造纸和皮革行业废水中的染料。

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