Prabhu Azhagapillai, Al Shoaibi Ahmed, Srinivasakannan C
Department of Chemical Engineering, The Petroleum Institute, Abu Dhabi, UAE E-mail:
Water Sci Technol. 2015;72(9):1594-600. doi: 10.2166/wst.2015.372.
The work reports a facile synthesis procedure for preparation of porous sulfonated carbons and its suitability for adsorption of phenol. The sulfonated carbon was synthesized utilizing a simplified, single-step, shorter duration process by sulfonation, dehydration and carbonization of sucrose in sulfuric acid and tetraethylorthosilicate. The surface and internal structures of the adsorbents were characterized utilizing various characterization techniques to understand the porous nature and surface functional groups of the porous matrix. Adsorption capacity was found to be highest for the sample heat treated at 600 °C, with the maximum adsorption capacity of 440 mg/g at 30 °C. The adsorption isotherms were tested with the Freundlich and Langmuir adsorption isotherms models to identify the appropriate adsorption mechanism.
该工作报告了一种制备多孔磺化碳的简便合成方法及其对苯酚的吸附适用性。磺化碳是通过在硫酸和正硅酸乙酯中对蔗糖进行磺化、脱水和碳化，利用简化的单步、短时间工艺合成的。利用各种表征技术对吸附剂的表面和内部结构进行表征，以了解多孔基质的多孔性质和表面官能团。发现600℃热处理的样品吸附容量最高，在30℃时最大吸附容量为440mg/g。用Freundlich和Langmuir吸附等温线模型测试吸附等温线，以确定合适的吸附机理。
