鸡蛋壳基多孔碳酸钙对刚果红吸附特性研究
收稿日期: 2021-01-26
网络出版日期: 2021-08-11
基金资助
广西科技师范学院青年科研项目(GXKS2020QN026);来宾市科学研究与技术开发计划项目(来科能202408);来宾市碳酸钙资源加工和应用重点实验室(来科能193203);广西科技计划项目(桂科AD20297139);广西科技师范学院青年科研创新团队—无机材料制备及清洁生产攻关小组(GXKS2020QNTD04)
Study on adsorption characteristics of multi-pore calcium carbonate made from egg shell powder for Congo red
Received date: 2021-01-26
Online published: 2021-08-11
陈燕萌 , 何春妮 , 潘亭 , 王永仕 , 蒙莫姬 , 蓝峻峰 . 鸡蛋壳基多孔碳酸钙对刚果红吸附特性研究[J]. 无机盐工业, 2021 , 53(8) : 91 -95 . DOI: 10.19964/j.issn.1006-4990.2021-0061
By using waste egg shell as raw material and sodium dodecyl sulfate as template,porous calcium carbonate particles were prepared by template method,and their apparent morphology was analyzed by scanning electron microscope.Porous cal-cium carbonate particles were used to study the adsorption of Congo red,the optimal adsorption conditions were as follows：at room temperature,porous calcium carbonate content of 0.15 g,25 mL of Congo red solution with mass concentration of 300 mg/L,adsorption time of 7 h,and under this condition the adsorption rate was about 93%.The adsorption isothermal model and kine-tic model showed that the adsorption of porous calcium carbonate to Congo red belonged to monolayer adsorption,and the ad-sorption kinetics was in line with the quasi-second-order kinetics.Infrared spectrum analysis showed that the adsorption of Congo red by porous calcium carbonate was mainly physical adsorption.
Key words： egg shell; porous calcium carbonate; Congo red; adsorption characteristics
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