Collaborative disposal of beryllium-containing wastewater with modified graphite@chitosan from waste lithium-ion batteries

Xu Zhao; Fang Hu; Xipeng Yang; Yige Sun; Guanqing Lin; Haoshuai Li; Zhiwu Lei; Yucheng Su; Khan Muhammad Yaruq Ali; Eming Hu; Hongqiang Wang; Qingliang Wang

doi:10.1016/j.ijbiomac.2024.137698

Collaborative disposal of beryllium-containing wastewater with modified graphite@chitosan from waste lithium-ion batteries

Int J Biol Macromol. 2024 Nov 15;283(Pt 2):137698. doi: 10.1016/j.ijbiomac.2024.137698. Online ahead of print.

Authors

Xu Zhao¹, Fang Hu², Xipeng Yang³, Yige Sun⁴, Guanqing Lin⁵, Haoshuai Li², Zhiwu Lei², Yucheng Su², Khan Muhammad Yaruq Ali², Eming Hu², Hongqiang Wang², Qingliang Wang⁶

Affiliations

¹ School of Nuclear Science and Technology, University of South China, Hengyang 421001, Hunan, China.
² School of Resource Environment and Safety Engineering, University of South China, Hengyang 421001, Hunan, China.
³ School of Resource Environment and Safety Engineering, University of South China, Hengyang 421001, Hunan, China; Non-ferrous Heavy Metal Pollution Control Equipment Hunan Engineering Laboratory, Science Environmental Protection Co., Ltd., Changsha 410000, Hunan, China; Hunan New Energy Wastewater Resource Treatment Engineering Technology Research Center, Science Environmental Protection Co., Ltd., Changsha 410000, Hunan, China.
⁴ College of Resources and Environment, Anhui Agricultural University, Hefei 230000, Anhui, China.
⁵ School of Resource Environment and Safety Engineering, University of South China, Hengyang 421001, Hunan, China; Guangzhou Yueyouyan Mineral Resources Technology Co., LTD., Institute of Comprehensive Utilization of Resources, Guangdong Academy of Sciences, Guangzhou 510630, Guangdong Province, China.
⁶ School of Resource Environment and Safety Engineering, University of South China, Hengyang 421001, Hunan, China. Electronic address: 670566869@qq.com.

PMID: 39549787
DOI: 10.1016/j.ijbiomac.2024.137698

Abstract

In order to recover and effectively remove beryllium from beryllium-containing wastewater and relieve the environmental pressure caused by waste batteries. In this study, the gel material was synthesized based on the modified graphite material separated from the waste battery, and the graphite-@chitosan composite gel (CWBG@CH) was designed and synthesized. Interestingly, CWBG@CH has a maximum fitted adsorption capacity (Q_emax) of 83.54 mg/g at pH = 6 and 35 °C. The adsorption process of CWBG@CH is controlled by surface complexation and electrostatic attraction. Strong coordination and synergistic adsorption between Be and the carbonic acid/hydroxyl group and phosphoric acid/amino group on CWBG@CH enhances the adsorption capacity and selectivity of CWBG@CH for Be. At the same time, the adsorption-desorption efficiency of the CWBG@CH in 5 times is >85 %. This discovery provides a direction for the recycling of graphite materials from waste batteries and indicates the great potential of CWBG@CH to remove Be(II) from aqueous solutions.

Keywords: Beryllium; Gel; Waste battery.