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Highly selective re...
Highly selective recovery of rare earth elements from mine wastewater by modifying kaolin with phosphoric acid
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- Hu, Kaibo (author)
- Jiangxi Province Key Laboratory of Cleaner Production of Rare Earths, Ganzhou 341000, China; Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou 341000, China; School of Resource and Environment, Nanchang University, Nanchang 330031, China
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- Liu, Yucheng (author)
- Jiangxi Province Key Laboratory of Cleaner Production of Rare Earths, Ganzhou 341000, China; Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou 341000, China
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- Zhou, Xiaowen (author)
- Jiangxi Province Key Laboratory of Cleaner Production of Rare Earths, Ganzhou 341000, China; Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou 341000, China
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- Hussain, Shahid (author)
- Luleå tekniska universitet,Energivetenskap
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- Li, Ke (author)
- Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou 341000, China; School of Resource and Environment, Nanchang University, Nanchang 330031, China
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- Chen, Qingfeng (author)
- Jiangxi Province Key Laboratory of Cleaner Production of Rare Earths, Ganzhou 341000, China; Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou 341000, China; School of Resource and Environment, Nanchang University, Nanchang 330031, China; Nanchang Medical College, Nanchang 330031, China
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- Zhang, Chuanqi (author)
- Jiangxi Province Key Laboratory of Cleaner Production of Rare Earths, Ganzhou 341000, China; Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou 341000, China
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- Song, Weijie (author)
- Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou 341000, China
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- Li, Xuewei (author)
- Jiangxi Province Key Laboratory of Cleaner Production of Rare Earths, Ganzhou 341000, China; Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou 341000, China
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- Wan, Yinhua (author)
- Jiangxi Province Key Laboratory of Cleaner Production of Rare Earths, Ganzhou 341000, China; Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou 341000, China; School of Resource and Environment, Nanchang University, Nanchang 330031, China
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(creator_code:org_t)
- Elsevier, 2023
- 2023
- English.
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In: Separation and Purification Technology. - : Elsevier. - 1383-5866 .- 1873-3794. ; 309
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Recovery of rare earth elements (REEs) from mine wastewater is essential for maintaining rare earth reserves and sustainable application of REEs. In the present study, we prepared a phosphoric acid modified kaolin (P-K) adsorbent by a simple mechanochemical process for the selective recovery of REEs from rare earth wastewater. The impacts of phosphoric acid dosage, milling duration, initial pH, temperature, initial ion concentration, and adsorbent dosage on the selective adsorption of REEs were investigated. The findings demonstrate that the adsorption of REEs by P-K follows pseudo-second-order kinetic model and the Langmuir isotherm model, and is dominated by chemical adsorption, with a maximum adsorption capacity of 19.82Â mg/g at 50 â. Additionally, in an original mine wastewater, the recovery rate of REEs can reach more than 90%, whereas the adsorption rates of calcium, magnesium and, ammonia nitrogen (whose concentration is 18 times that of REEs) are nearly zero, indicating that P-K has extremely high selectivity for REEs. Furthermore, the feedstock solution containing 40Â mg/L of REEs may be concentrated to 3510Â mg/L following enrichment treatment, and 99.9% of the REEs are eluted using a low concentration of hydrochloric acid. The findings illustrate that P-K has a wide range of potential applications in the treatment of rare earth industrial effluents.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences (hsv//eng)
Keyword
- Modified kaolin
- Rare earth wastewater
- Adsorption
- Selective recovery
- Energiteknik
- Energy Engineering
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Hu, Kaibo
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Liu, Yucheng
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Zhou, Xiaowen
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Hussain, Shahid
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Li, Ke
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Chen, Qingfeng
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show more...
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Zhang, Chuanqi
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Song, Weijie
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Li, Xuewei
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Wan, Yinhua
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
- Articles in the publication
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Separation and P ...
- By the university
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Luleå University of Technology