醋酸氧铝的制备及其对刚果红的吸附试验研究  

Preparation and Adsorption Performance for Congo Red of Aluminium Subacetate

作　　者：刘礼俊 王丁 李中林 吕凤程 李玉平[1,2] 张伟光[1,2] 李义兵 LIU Lijun;WANG Ding;LI Zhonglin;LYU Fengcheng;LI Yuping;ZHANG Weiguang;LI Yibing(Department of Materials Science and Engineering,Guilin University of Technology,Guilin 541000,China;Collaborative Innovation Center for Exploration of Nonferrous Metal Deposits and Efficient Utilization of Resources in Guangxi,Guilin University of Technology,Guilin 541000,China)

机构地区：[1]桂林理工大学材料科学与工程学院,广西桂林541000 [2]桂林理工大学有色金属矿产勘查与资源高效利用省部共建协同创新中心,广西桂林541000

出　　处：《湿法冶金》2022年第6期523-529,共7页Hydrometallurgy of China

基　　金：广西创新驱动发展专项资金资助项目(桂科AA17204084);广西科技计划项目(重大专项)(桂科AA22067077);广西科技计划项目(重大专项)(桂科AA22068077)。

摘　　要：研究了以异丙醇铝为原料,冰醋酸为结晶剂,采用水热合成法制备醋酸氧铝,并借助XRD、SEM、N_(2)吸附-脱附法和FT-IR对所制备醋酸氧铝进行表征,考察了吸附时间、溶液初始pH对醋酸氧铝吸附刚果红的影响。结果表明:所制备的醋酸氧铝为分级、分层结构,在25℃、溶液初始pH=4、溶液中初始刚果红质量浓度300 mg/L、pH=3的醋酸氧铝用量0.5 g/L条件下,醋酸氧铝对刚果红的吸附量可达580.68 mg/g,脱除率达96.78%;吸附过程符合准二级动力学吸附模型和Langmuir等温吸附模型;经4次循环吸附后,醋酸氧铝对刚果红的吸附量仍能维持在562.47 mg/g左右,可重复使用。Aluminium subacetate was prepared by hydrothermal synthesis using aluminium isopropoxide as raw material and glacial acetic acid as crystallising agent,and was characterised by XRD,SEM,N_(2)adsorption-desorption method and FT-IR.The effects of adsorption time,initial solution pH on adsorption of Congo red by aluminium subacetate were examined.The results show that the prepared aluminium subacetate is a graded and layered structure,and the adsorption for Congo red can reach 580.68 mg/g and the removal rate can reach 96.78%under the conditions of 25℃,initial solution pH of 4,initial Congo red mass concentration of 300 mg/L and aluminium subacetate amount of 0.5 g/L(pH=3).After four adsorption cycles,aluminium subacetate adsorption amount for Congo red is still maintained at about 562.47 mg/g,and it can be reused.

关 键 词：醋酸氧铝 制备 水热合成法 刚果红 吸附 

分 类 号：TQ424[化学工程] O647.3[理学—物理化学]