Department of Civil Engineering, University College of Engineering, Ramanathapuram, TN, India.
Department of Chemistry, University College of Engineering, Ramanathapuram, TN, India.
Ecotoxicol Environ Saf. 2015 Aug;118:177-182. doi: 10.1016/j.ecoenv.2015.04.033.
The discarded materials from different sources can be utilized as effective materials in wastewater remediation. This proposed study was aimed mainly to investigate the possibility of Effective Microorganisms based compost (EMKC), which is derived from the kitchen solid waste, as a non-conventional low cost adsorbent for the removal of malachite green from aqueous solution. Batch experiments were carried out to evaluate the optimum operating parameters like pH (2-9), initial dye concentration (50-1000mg/L), adsorbent particle size (0.6-2.36mm) and adsorbent dosage (2-12g/L). EMKC recorded maximum uptake of 136.6mg/g of MG at pH 8, initial dye concentration 1000mg/L, adsorbent particle size 1.18mm and adsorbent dosage 4g/L. Two and three parameter adsorption models were employed to describe experimental biosorption isotherm data. The results revealed that the Sips model resulted in better fit than other models. The pseudo-first and -second order models were applied to describe kinetic data, of which the pseudo-second order described experimental data better with high correlation coefficient. This investigation suggested that EMKC could be an effective and low cost material for the removal of malachite green dye from aqueous solution.
从不同来源的废弃材料可以被利用为废水修复的有效材料。本研究主要旨在探讨基于有效微生物的堆肥（EMKC）的可能性，它是由厨房固体废物衍生而来，作为一种非传统的低成本吸附剂，用于从水溶液中去除孔雀石绿。进行了批量实验，以评估最佳操作参数，如 pH（2-9）、初始染料浓度（50-1000mg/L）、吸附剂粒径（0.6-2.36mm）和吸附剂用量（2-12g/L）。在 pH 8、初始染料浓度 1000mg/L、吸附剂粒径 1.18mm 和吸附剂用量 4g/L 的条件下，EMKC 记录到最大的 MG 吸附量为 136.6mg/g。采用双参数和三参数吸附模型来描述实验吸附等温线数据。结果表明，Sips 模型比其他模型具有更好的拟合度。拟一级和拟二级模型被用于描述动力学数据，其中拟二级模型能够更好地描述实验数据，具有较高的相关系数。本研究表明，EMKC 可以作为一种有效且低成本的材料，用于从水溶液中去除孔雀石绿染料。
