文献类型：期刊文献

英文题名：Rare Earth Extraction from Phosphogypsum by Aspergillus niger Culture Broth

作者：Zhang, Jiangang Zhang, Xinyue Su, Xiangdong Du, Haijun Lu, Yongzhong Zhang, Qinglian

第一作者：张金钢

通信作者：Su, XD[1]

机构：[1]Guizhou Inst Technol, Key Lab Light Met Mat Proc Technol Guizhou Prov, Guiyang 550025, Peoples R China;[2]Guizhou Minzu Univ, Sch Chem Engn, Guiyang 550025, Peoples R China;[3]Yili Normal Univ, Sch Chem & Chem Engn, Yining 835000, Peoples R China;[4]Guiyang Univ, Sch Biol & Environm Engn, Guiyang 550005, Peoples R China

第一机构：贵州理工学院

通信机构：corresponding author), Guizhou Inst Technol, Key Lab Light Met Mat Proc Technol Guizhou Prov, Guiyang 550025, Peoples R China.|贵州理工学院;

年份：2024

卷号：29

期号：6

外文期刊名：MOLECULES

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001193470600001)】；

基金：No Statement Available

语种：英文

外文关键词：phosphogypsum; leaching; rare earth elements; Aspergillus niger; biological hydrometallurgy

摘要：The extraction of rare earth elements (REEs) from phosphogypsum (PG) is of great significance for the effective utilization of rare earth resources and enhancing the resource value of PG waste residues. This study used Aspergillus niger (A. niger) fungal culture filtrate as a leaching agent to investigate the behavior of extracting REEs from PG through direct and indirect contact methods. According to the ICP-MS results, direct leaching at a temperature of 30 degree celsius, shaking speed of 150 rpm, and a solid-liquid ratio of 2:1, achieved an extraction rate of 74% for REEs, with the main elements being yttrium (Y), lanthanum (La), cerium (Ce), and neodymium (Nd). Under the same conditions, the extraction rate of REEs from phosphogypsum using an A. niger culture filtrate was 63.3% higher than that using the simulated organic acid-mixed solution prepared with the main organic acid components in the A. niger leachate. Moreover, the morphological changes observed in A. niger before and after leaching further suggest the direct involvement of A. niger's metabolic process in the extraction of REEs. When compared to using organic acids, A. niger culture filtrate exhibits higher leaching efficiency for extracting REEs from PG. Additionally, using A. niger culture filtrate is a more environmentally friendly method with the potential for industrial-scale applications than using inorganic acids for the leaching of REEs from PG.