鸡蛋壳基多孔碳酸钙对刚果红吸附特性研究

doi:10.19964/j.issn.1006-4990.2021-0061

无机盐工业 ›› 2021, Vol. 53 ›› Issue (8): 91-95.doi: 10.19964/j.issn.1006-4990.2021-0061

鸡蛋壳基多孔碳酸钙对刚果红吸附特性研究

陈燕萌¹(),何春妮¹,潘亭¹,王永仕²,蒙莫姬²,蓝峻峰¹()

1.广西科技师范学院,广西来宾 546199
2.来宾市检验检测中心

收稿日期:2021-01-26 出版日期:2021-08-10 发布日期:2021-08-11
作者简介:陈燕萌（1986— ）,女,硕士,实验师,主要研究方向为碳酸钙材料制备与应用研究;E-mail： 277153429@qq.com。
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

Chen Yanmeng¹(),He Chunni¹,Pan Ting¹,Wang Yongshi²,Meng Moji²,Lan Junfeng¹()

1. Guangxi Science & Technology Normal University,Laibin 546199,China
2. Laibin Inspection and Testing Center

Received:2021-01-26 Published:2021-08-10 Online:2021-08-11

摘要/Abstract

摘要：

以废弃物鸡蛋壳为原料,以十二烷基硫酸钠为模板剂,采用模板法制成多孔碳酸钙微粒,并用扫描电镜对其进行表观形貌分析。将多孔碳酸钙微粒应用于刚果红的吸附研究,得出较佳吸附条件为：室温、多孔碳酸钙添加量为0.15 g、质量浓度为300 mg/L 的刚果红溶液25 mL、吸附时间为7 h,该条件下的吸附率约为93%。通过吸附等温模型和动力学模型分析,表明多孔碳酸钙对刚果红的吸附属于单分子层吸附,吸附动力学比较符合准二级动力学;红外光谱分析表明多孔碳酸钙对刚果红的吸附主要以物理吸附为主。

关键词: 鸡蛋壳, 多孔碳酸钙, 刚果红, 吸附特性

Abstract:

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

中图分类号:

TQ132.32

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.

Chen Yanmeng,He Chunni,Pan Ting,Wang Yongshi,Meng Moji,Lan Junfeng. Study on adsorption characteristics of multi-pore calcium carbonate made from egg shell powder for Congo red[J]. Inorganic Chemicals Industry, 2021, 53(8): 91-95.

图/表 11

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参考文献 19

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吸附模型	模型参数	温度/℃
吸附模型	模型参数	20	30	40
Langmuir	Q_max	21.46	23.87	27.32
	K_L	0.35	0.32	0.25
	R²	0.980	0.997	0.975
Freundlich	n	4.57	3.75	2.54
	K_F	9.30	8.73	7.42
	R²	0.385	0.803	0.795

吸附动力学模型	吸附动力学方程	k	C	R²
准一级动力学模型	ln（Q_e-Q_t）=-0.582 6t+1.662	0.582 6	1.662	0.866
准二级动力学模型	t/Q_t=0.044 8t+0.007 5	0.044 8	0.007 5	0.999

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鸡蛋壳基多孔碳酸钙对刚果红吸附特性研究

Study on adsorption characteristics of multi-pore calcium carbonate made from egg shell powder for Congo red

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