硅酸盐细菌对赤泥中钾的浸出研究  

Potassium Leached from Red Mud by Silicate Bacteria

作　　者：郭贵香[1] 杨爱江[1,2] 邓秋静[1] 薛洪其 袁翔[1] 金祖雪 

机构地区：[1]贵州大学资源与环境工程学院,贵阳550025 [2]贵州大学环境工程规划设计研究所,贵阳550025

出　　处：《硅酸盐通报》2016年第6期1658-1663,共6页Bulletin of the Chinese Ceramic Society

基　　金：贵州省教育厅项目(黔教合KY字(2015)330号);贵州特色重点建设学科项目(黔科合人才团队[2012]4005号);贵州省科学技术基金项目(黔科合J字[2013]2126号)

摘　　要：为评价硅酸盐细菌对赤泥中钾元素的浸出影响,在赤泥中接种经纯化、驯化的硅酸盐细菌,选择浸出时间、摇床转速、实验温度和赤泥投加量进行单因素实验,研究赤泥中钾元素的浸溶效果并通过正交实验得出最佳浸溶条件。结果表明,当赤泥投加量为1 g·L-1,实验温度为32.5℃,浸出时间为3 d,摇床转速为150 r·min-1时,硅酸盐细菌对赤泥中含钾矿物中钾元素的浸溶效果最好,其浸出率为84.63%。实验为赤泥提钾的综合利用提供一定参考依据。In order to evaluate the effect of silicate bacterial leaching of potassium from red mud,inoculated the purified,acclimated silicate bacteria to the red mud,selected leaching time,shaking speed,temperature and red mud dosage of experimental variables did single factor experiments,studied the potassium leaching effect on red mud and through orthogonal test obtained the optimum leaching conditions.The results showed that when the red mud dosage was 1 g·L-1,the experimental temperature was 32.5 ℃,the leaching time were 3 d,and the table concentrator speed was 150 r·min-1,the best leaching effect of silicate bacteria on potassium of potassium-Bearing mineral of red mud,the leaching rate was 84.63%.The experiment provided some reference for the comprehensive utilization of red mud extracting potassium.

关 键 词：硅酸盐细菌 赤泥 钾 浸出毒性 

分 类 号：TU526[建筑科学—建筑技术科学]