文献类型：期刊文献

英文题名：Sulfuric Acid Leaching of Aluminum from Activated Coal Spoil

作者：Sun, Xiaoxue[1];Sun, Yuzhu[1];Yu, Jianguo[1]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Sch Chem Engn, Shanghai 200237, Peoples R China

年份：2016

卷号：35

期号：6

起止页码：1575

外文期刊名：ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY

收录：;EI(收录号：20164703028176);WOS:【SCI-EXPANDED(收录号:WOS:000393419700003)】；

基金：This work was financially supported by National High Technology Research and Development Program of China (863 Program, No. 2011AA06A102), National Natural Science Foundation of China (No. 21306053), Key Project of Scientific Research Innovation of Shanghai Municipal Education Commission (No. 14ZZ063), and Fundamental Research Funds for the Central Universities (WB1213008).

语种：英文

外文关键词：coal spoil; sulfuric acid leaching; response surface methodology; Box-Behnken design; leaching kinetic

摘要：This article investigated the leaching processes of activated coal spoil (ACS) aimed at recovering aluminum resource into high value-added products. The effects of particle size, H2SO4 concentration, solid-to-liquid ratio, temperature, and stirring speed on aluminum extraction were experimentally studied with a single factor experiment. Based on the single factor experimental results, the response surface method with a Box-Behnken design was used to determine the key operating conditions, where a predictive equation was established to describe quantitatively the relationships of the relative process parameters. Finally, the leaching kinetic data were successfully examined according to the Avrami model and the apparent activation energy (E-a) was calculated as 51.07 kJ/mol for ACS and 72.88 kJ/mol for non-ACS, which proved the necessity of activation. (C) 2016 American Institute of Chemical Engineers Environ Prog, 35: 1575-1583, 2016