Research on the preparation of Mg-Al-Zr composite oxides and their adsorption capability for boron

doi:10.11894/iwt.2018-0489

Industrial Water Treatment ›› 2019, Vol. 39 ›› Issue (5): 20-23. doi: 10.11894/iwt.2018-0489

• Research and Experiment • Previous Articles Next Articles

Research on the preparation of Mg-Al-Zr composite oxides and their adsorption capability for boron

Guangzhuang Hu(),Wei Zhang,Yuantao Chen*(),Chen Liu,Cheng Xu,Rong Liu

School of Chemistry and Chemical Engineering, Qinghai Normal University, Xining 810008, China

Received:2019-04-01 Online:2019-05-20 Published:2019-08-07
Contact: Yuantao Chen E-mail:1125547439@qq.com;chenyt@qhnu.edu.cn
Supported by:
国家自然科学基金项目(21667024);青海省自然科学基金项目(2016-ZJ-912)

镁铝锆复合金属氧化物的制备及对硼吸附性能的研究

胡广壮(),张炜,陈元涛*(),刘晨,许成,刘蓉

青海师范大学化学化工学院, 青海西宁 810008

通讯作者: 陈元涛 E-mail:1125547439@qq.com;chenyt@qhnu.edu.cn
作者简介:胡广壮(1992-),研究生在读。电话:13327696552, E-mail:1125547439@qq.com
基金资助:
国家自然科学基金项目(21667024);青海省自然科学基金项目(2016-ZJ-912)

Abstract

Abstract:

The Mg-Al-Zr composite metal oxides were prepared successfully, and the influences of initial concentration of boron, solution pH, contact time, temperature and chlorine ion concentration on the adsorption capability of Mg-Al-Zr composite metal oxides for boron in solution were investigated. The results showed that the chlorine ions concentration had a very little influence on boron adsorption. When the temperature was 25℃, dosage of Mg-Al-Zr composite metal oxides 2.5 g/L, pH of the solution 6, adsorption time 300 min and boron mass concentration 200 mg/L, the adsorption effect of boron was the best and the adsorption capacity reached 34.07 mg/g. The adsorption of Mg-Al- Zr composite metal oxides for boron was in accordance with pseudo-second-order kinetic model and Langmuir adsorption isotherm model.

Key words: Mg-Al-Zr composite metal oxides, boron containing wastewater, co-precipitation method

摘要：

实验成功制备了镁铝锆复合金属氧化物。考察了硼初始浓度、溶液pH、接触时间、温度、Cl^-浓度对镁铝锆复合金属氧化物对溶液中硼吸附效果的影响。结果表明，Cl^-浓度对硼的吸附影响很小，在温度为25℃，镁铝锆复合金属氧化物投加量为2.5 g/L，溶液pH为6，吸附时间为300 min，硼质量浓度为200 mg/L时，对硼的吸附效果最好，吸附量可以达到34.07 mg/g。镁铝锆复合金属氧化物对硼的吸附平衡符合准二级动力学模型和Langmuir吸附等温模型。

关键词: 硼, 复合氧化物, 吸附, 共沉淀法

CLC Number:

X703.1

Guangzhuang Hu,Wei Zhang,Yuantao Chen,Chen Liu,Cheng Xu,Rong Liu. Research on the preparation of Mg-Al-Zr composite oxides and their adsorption capability for boron[J]. Industrial Water Treatment, 2019, 39(5): 20-23.

胡广壮,张炜,陈元涛,刘晨,许成,刘蓉. 镁铝锆复合金属氧化物的制备及对硼吸附性能的研究[J]. 工业水处理, 2019, 39(5): 20-23.

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https://www.iwt.cn/EN/Y2019/V39/I5/20

Figures/Tables 8

References 5

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4	米晓云, 徐圣楠, 刘如浩, 等. Ti:Al₂O₃纳米粉体的共沉淀法合成及表征[J]. 无机化学学报, 2011, 27 (12): 2401- 2404. URL
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温度/℃	Langmuir			Freundlich
温度/℃	C_smax/(mg·g^-1)	b/(mg·g^-1)	R²	K_F	n	R²
25	34.07	8.19×10^-3	0.976	0.723	1.52	0.961
35	26.60	2.48×10^-2	0.987	2.266	2.17	0.968
45	25.00	5.01×10^-2	0.966	4.468	3.00	0.820

温度/℃	Langmuir			Freundlich
温度/℃	C_smax/(mg·g^-1)	b/(mg·g^-1)	R²	K_F	n	R²
25	34.07	8.19×10^-3	0.976	0.723	1.52	0.961
35	26.60	2.48×10^-2	0.987	2.266	2.17	0.968
45	25.00	5.01×10^-2	0.966	4.468	3.00	0.820

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