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Removal of neodymium(III) from wastewater using microtube ultrafiltration chemical reactor with organic phosphate

文献类型：期刊论文

作者Pei, Liang1,3,4; Wang, Chunhui1,4; Wang, Liming2
刊名DESALINATION AND WATER TREATMENT
出版日期2022-09-01
卷号270页码:70-82
ISSN号1944-3994
关键词Microtube ultrafiltration chemical reactor Organic phosphate Neodymium(III) Wastewater part Enrichment part Removal percentage
DOI10.5004/dwt.2022.28741
通讯作者Pei, Liang(peiliang@igsnrr.ac.cn)
英文摘要Rare-earth mining in Inner Mongolia has produced wastewater containing neodymium, which has caused certain environmental pollution. Aiming at the low removal efficiency of neodymium in wastewater, we developed microtube ultrafiltration chemical reactor (UFCR). UFCR had organic phosphate system containing wastewater part with buffer solution acetic acid and enrichment part with nitric acid solution and organic phosphate(2-ethylhexyl phosphoric acid-mono-2ethylhexyl-ester) dissolved in fuel oil. Many factors of neodymium(III) removal using UFCR need to explore, including hydrogen ion concentration (or pH), cinit of neodymium(III), different ionic strength of rare-earth mine wastewater, volume ratio of organic phosphate with fuel oil and nitric acid solution (O/W), nitric acid concentration, organic phosphate concentration and different acid solution of enrichment part. The advantages of UFCR compared with the traditional removal methods was investigated. The effects of hydrodynamic properties (stablity and flow rate) and UF system parameters ( inner diameter of microtube, tubule shell thickness, void ratio) etc. on the mass transfer performance of UFCR process for neodymium(III) removal were also studied. The experimental results show that the best removal conditions of neodymium( III) were obtained as that nitric acid concentration was 4.00 mol L-1, organic phosphate concentration was 0.150 mol L-1, and O/W was 0.5 in the enrichment part, and pH value was 4.50 in the wastewater part. Ionic strength of rare-earth mine wastewater had no obvious effect on neodymium(III) removal. When cinit of neodymium(III) concentration was 1.42 x 10(-4) mol L-1, the removal percentage of neodymium(III) was up to 93.5% in 150 min. The results of this study provide theoretical support for the treatment of wastewater containing neodymium in rare-earth mines.
WOS关键词LIQUID-MEMBRANE ; NANOFILTRATION MEMBRANE ; HIGH REJECTION ; EXTRACTION ; ION
资助项目independent research projects of Xinjiang Institute of ecology and geography, Chinese Academy of Sciences[E2500201] ; National Youth Science Foundation[51109197] ; western development action plan of the Chinese Academy of Sciences[kzcp2-xb2-13]
WOS研究方向Engineering ; Water Resources
语种英语
出版者DESALINATION PUBL
WOS记录号WOS:000884263100008
资助机构independent research projects of Xinjiang Institute of ecology and geography, Chinese Academy of Sciences ; National Youth Science Foundation ; western development action plan of the Chinese Academy of Sciences
源URL[http://ir.igsnrr.ac.cn/handle/311030/186718]  
专题中国科学院地理科学与资源研究所
通讯作者Pei, Liang
作者单位1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
2.Xian Polytechn Univ, Sch Environm & Chem Engn, Xian 710048, Peoples R China
3.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Xinjiang 830011, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Pei, Liang,Wang, Chunhui,Wang, Liming. Removal of neodymium(III) from wastewater using microtube ultrafiltration chemical reactor with organic phosphate[J]. DESALINATION AND WATER TREATMENT,2022,270:70-82.
APA Pei, Liang,Wang, Chunhui,&Wang, Liming.(2022).Removal of neodymium(III) from wastewater using microtube ultrafiltration chemical reactor with organic phosphate.DESALINATION AND WATER TREATMENT,270,70-82.
MLA Pei, Liang,et al."Removal of neodymium(III) from wastewater using microtube ultrafiltration chemical reactor with organic phosphate".DESALINATION AND WATER TREATMENT 270(2022):70-82.

入库方式： OAI收割

来源：地理科学与资源研究所

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