Department of Chemistry, Maulana Azad National Institute of Technology (A Deemed University), Bhopal 462 051, India.
J Colloid Interface Sci. 2010 Apr 15;344(2):497-507. doi: 10.1016/j.jcis.2010.01.007. Epub 2010 Jan 14.
This article describes the use of bottom ash [a power plant waste] and de-oiled soya [an agricultural waste] as effective adsorbents for the removal of a hazardous azo dye [Chrysoidine Y] from its aqueous solutions. This paper presents an experimental study and discussion of the adsorption characteristics of this dye on the two adsorbents. The adsorbents have been characterized, and also the effects of time, temperature, concentration, pH, and sieve size on the extent of adsorption have been evaluated. Batch adsorption measurements, kinetic studies, and column operations have been performed to elucidate the dye uptake capacity of the adsorbents. The monolayer adsorption capacities at 30 degrees C have been found from Langmuir analysis to be 7.27x10(-5) mol g(-1) and 3.35x10(-5) mol g(-1) for bottom ash and de-oiled soya, respectively. Adsorption kinetics experimental data are indicative of pseudo-second order kinetics during these processes. Column experiments indicate practical utility of the adsorbents for eradicating hazardous dyes from effluents. The recovery of the adsorbed dye from bottom ash and de-oiled soya, have been found to be 85% and 99%, respectively.
本文描述了使用底灰（一种电厂废物）和脱油大豆（一种农业废物）作为有效吸附剂，从水溶液中去除危险偶氮染料（金橙 Y）。本文对该染料在两种吸附剂上的吸附特性进行了实验研究和讨论。对吸附剂进行了表征，并评估了时间、温度、浓度、pH 值和筛网尺寸对吸附程度的影响。进行了批量吸附测量、动力学研究和柱操作，以阐明吸附剂的染料吸收能力。从朗缪尔分析得出，在 30°C 时，底灰和脱油大豆的单层吸附容量分别为 7.27×10(-5)mol g(-1)和 3.35×10(-5)mol g(-1)。吸附动力学实验数据表明，这些过程中存在拟二级动力学。柱实验表明，吸附剂在从废水中消除危险染料方面具有实际应用价值。从底灰和脱油大豆中回收吸附的染料，分别为 85%和 99%。
