MACRO-KINETICS BEHAVIOR OF GOLD RECOVERY BY ACTIVATED CARBON FIBERS (ACFs) IN A FLUIDIZED BED

作     者：ZHANG Xiaoping CHEN Shuixia ZENG Hanmin 

作者机构：Department of Environmental Science and EngineeringSouth China University of TechnologyGuangzhou 510641P.R.China Key Laboratory of Polymeric Composite&Functional MaterialsThe Ministry of Education of ChinaMaterials Science InstituteZhongshan University 

出 版 物：《Chinese Journal of Reactive Polymers》 (中国反应性高分子（英文版）)

年 卷 期：2002年第11卷第2期

页      面：143-146页

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 

基　　金：Natural Science Foundation of Guangdong Province (№: 970513) and The High Technology Research and Development Program of China (№: 863-715-004-0240) 

主　　题：Fluidization Functional fiber Aurum Reaction rate 

摘      要：The recovery of Au by activated carbon fibers (ACFs) was carried out in a 40mm diameter, 1200mm height fluidized bed. The rates of reaction of the functional fibers with Au3+ in the pure aurum solution and in the aurum-containing wastewater were measured respectively at the different solution flow rates, and compared with the results under the static solution conditions. Experimental results indicated that the reaction rates in fluidization are notably higher than those in the static state and increase with the increase of solution flow rate. It demonstrates that the thickness of the concentration boundary layer is decreased and a uniform temperature field is established in the bed due to increasing of the turbulent extent with the relative fiber/solution velocity.