Universidade Federal de Mato Grosso, DRM-UFMT, Mato Grosso, Brazil.
J Hazard Mater. 2011 Feb 15;186(1):675-82. doi: 10.1016/j.jhazmat.2010.11.054. Epub 2010 Nov 20.
The objective of this study is to examine the adsorption behavior of Sumifix Brilliant Orange 3R textile dye from aqueous solution on smectite sample, an abundant Amazon clay. The original smectite clay mineral has been collected from Amazon region, Brazil. The compound 2-aminomethylpyridine was anchored onto smectite surface by heterogeneous route. The ability of these materials to remove the Sumifix Brilliant Orange 3R textile dye from aqueous solution was followed by a series of adsorption isotherms, using a batchwise process. The maximum number of moles adsorbed was determined to be 1.26 and 2.07 mmol g(-1) for natural and modified clay samples, respectively. The energetic effects caused by dye cations adsorption were determined through calorimetric titrations. Thermodynamics indicated the existence of favorable conditions for such dye-nitrogen interactions.
本研究旨在考察从水溶液中吸附亮橙 3R 纺织染料的行为，所用吸附剂为丰富的巴西亚马逊黏土蒙脱石。原始蒙脱石粘土矿物是从巴西亚马逊地区采集的。通过非均相途径将 2-氨甲基吡啶化合物固定在蒙脱石表面。通过批量处理，使用一系列吸附等温线来跟踪这些材料从水溶液中去除亮橙 3R 纺织染料的能力。天然和改性粘土样品的最大吸附摩尔数分别为 1.26 和 2.07mmol g(-1)。通过量热滴定法确定了染料阳离子吸附引起的能量效应。热力学表明，这种染料-氮相互作用存在有利条件。
