Gupta Vinod Kumar, Jain Rajeev, Varshney Shaily, Saini Vipin Kumar
Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India.
J Colloid Interface Sci. 2007 Mar 15;307(2):326-32. doi: 10.1016/j.jcis.2006.12.003. Epub 2006 Dec 8.
The wheat husk, an agricultural by-product, has been activated and used as an adsorbent for the adsorption of Reactofix Navy Blue 2 GFN from aqueous solution. In this work, adsorption of Reactofix Navy Blue 2 GFN on wheat husk and charcoal has been studied by using batch studies. The equilibrium adsorption level was determined to be a function of the solution pH, adsorbent dosage, dye concentration and contact time. The equilibrium adsorption capacities of wheat husk and charcoal for dye removal were obtained using Freundlich and Langmuir isotherms. Thermodynamic parameters such as the free energies, enthalpies and entropies of adsorption were also evaluated. Adsorption process is considered suitable for removing color, COD from waste water.
麦麸，一种农业副产品，已被活化并用作从水溶液中吸附活性固色藏青2 GFN的吸附剂。在这项工作中，通过批次研究对活性固色藏青2 GFN在麦麸和木炭上的吸附进行了研究。确定平衡吸附水平是溶液pH值、吸附剂用量、染料浓度和接触时间的函数。使用弗伦德里希等温线和朗缪尔等温线获得了麦麸和木炭对染料去除的平衡吸附容量。还评估了吸附的自由能、焓和熵等热力学参数。吸附过程被认为适用于去除废水中的颜色、化学需氧量。
