文献类型：期刊文献

英文题名：Adsorption of gallium from bauxite Bayer liquor using acrylonitrile-Divinylbenzene-Amidoxime resin and deactivation after multiple cycles due to aluminum hydroxide layer

作者：Xie, Jiangqin Qin, Qingdong Sheng, Ailin Shi, Haolan Yin, Hongxia Zheng, Kai Xie, Lilan Liu, Wei Li, Yang

第一作者：Xie, Jiangqin

通信作者：Liu, W[1];Li, Y[1]

机构：[1]Guizhou Inst Technol, Sch Mat & Energy Engn, Guiyang 550003, Peoples R China;[2]Guizhou Normal Univ, Sch Mat & Architectural Engn, Guiyang 550025, Peoples R China

第一机构：贵州理工学院

通信机构：corresponding author), Guizhou Inst Technol, Sch Mat & Energy Engn, Guiyang 550003, Peoples R China.|贵州理工学院;

年份：2026

卷号：243

外文期刊名：HYDROMETALLURGY

收录：;EI(收录号：20261920673959);WOS:【SCI-EXPANDED(收录号:WOS:001767570700001)】；

基金：The authors gratefully acknowledge the National Natural Science Foundation of China (grant No. 52363009, 52263004) , Key Project of Basic Research Program of Guizhou Province (QianKeHe JiChu ZD [2026] 080) , Major Science and Technology Special Project of Guizhou Province (Qiankehe Rencai XKBF [2025] 007) , Central Government-guided Major Technology Transfer Project for Local Areas (QianKe-HeZhongYin Di [2024] 030) and PhD start-up fund of Guizhou Institute of Technology (2023GCC003) .

语种：英文

外文关键词：Amidoxime resin; Gallium; Bayer liquor; Selective adsorption; Resin deactivation

摘要：In recent years, the rapid development of high-tech industries including semiconductors and new energy has boosted the demand for gallium (Ga), a critical strategic metal. Bayer liquor derived from bauxite processing is the major primary source of Ga. Given increasing resource scarcity and environmental restrictions, developing efficient and eco-friendly Ga recovery technologies has attracted extensive interest. In this study, an acrylonitrile-divinylbenzene (AN-DVB) resin was synthesized via suspension polymerization and further amidoxime (AO)-functionalized with hydroxylamine hydrochloride to obtain AN-DVB-AO resin. Adsorption-desorption behavior and deactivation mechanism of the resin were systematically investigated in real bauxite Bayer liquor. Results demonstrated that the AN-DVB-AO resin exhibited high selectivity for Ga. The maximum adsorption capacity reached 13.1 mg/g after 12 h of amidoximation. After 14 reuse cycles, the Ga adsorption capacity decreased to 6.22 mg/g, representing 52.6% reduction. The primary reason for resin deactivation was the formation of a dense aluminum hydroxide (Al(OH)3) layer after multiple cycles, which blocked active sites and degraded selective Ga adsorption. The aluminum (Al) content on the resin surface increased by 42.7% after 14 cycles, confirming that Al precipitation was the dominant cause of deactivation. The adsorption mechanism was clarified, providing a theoretical basis and technical support for practical Ga recovery from Bayer liquor using AO-modified resin.