Amine Sorbents for Selective Recovery of Heavy Rare‐Earth Elements (Dysprosium, Ytterbium) from Aqueous Solution

Wang Qiuming; Kail Brian W.; Wilfong Walter C.; Shi Fan; Tarka Thomas J.; Gray McMahan L.

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Amine Sorbents for Selective Recovery of Heavy Rare‐Earth Elements (Dysprosium, Ytterbium) from Aqueous Solution

机译：胺吸附剂从水溶液中选择性地恢复重稀土元素（镝，镱）

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Abstract The supply shortages of rare‐earth elements (REEs) necessitate low‐cost and efficient processes for the recovery of valuable REE commodities. A covalently anchored polyethylenimine‐epoxysilane‐silica sorbent was prepared by simple wet impregnation and engineered to afford selective separation of REEs into heavy and light element groups. Remarkably, the sorbent allowed the cyclic recovery of 80?% of ppb‐level REEs and around 0?% of the ppm‐level Na, Mg, Ca from acid mine drainage solution, thus highlighting the applicability of the sorbent for concentrating REEs from practical waste streams. Moreover, the sorbent is promising for pre‐concentration of 7.6?wt% REEs, exceeding the U.S. Department of Energy REEs pre‐concentration objective. Notably, the use of an immobilized amine sorbent for the selective separation of the heavier REEs by an adsorption‐elution process allowed only the heavier species (99?% Dy+Yb) to be concentrated and separated. This represents a practical and highly efficient sorbent adsorption‐desorption procedure that both concentrates and separates high‐purity REE from low‐concentration REE sources.

机译：摘要稀土元素（REES）的供应短缺需要低成本和高效的流程，以便恢复有价值的雷福商品。通过简单的湿浸渍制备共价锚固的聚乙酰胺 - 环氧硅烷 - 二氧化硅吸附剂，并工程化以提供重圈的选择性分离成重和轻质元素基团。值得注意的是，吸附剂允许循环回收＆ 80？％的PPB级REES和来自酸性矿溶液的PPM级NA，Mg，Ca的0.％左右0？％，从而突出了吸附剂对浓缩REES的适用性从实际废物流。此外，吸附剂对预浓度为7.6％的REES，超越美国能源REES预浓缩目标。值得注意的是，使用固定化的胺吸附剂通过吸附洗脱方法选择较重的REES的选择性分离，仅允许浓缩和分离较重的物种（＆ 99〜％dy + Yb）。这代表了一种实用且高效的吸附剂吸附 - 解吸过程，其浓缩，并将高纯度射精从低浓度的REE源分离。

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《ChemPlusChem》 |2020年第1期|共7页
作者
Wang Qiuming; Kail Brian W.; Wilfong Walter C.; Shi Fan; Tarka Thomas J.; Gray McMahan L.;
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作者单位

National Energy Technology LaboratoryU. S. Department of Energy626 Cochrans Mill Road Pittsburgh;

National Energy Technology LaboratoryU. S. Department of Energy626 Cochrans Mill Road Pittsburgh;

National Energy Technology LaboratoryU. S. Department of Energy626 Cochrans Mill Road Pittsburgh;

National Energy Technology LaboratoryU. S. Department of Energy626 Cochrans Mill Road Pittsburgh;

National Energy Technology LaboratoryU. S. Department of Energy626 Cochrans Mill Road Pittsburgh;

National Energy Technology LaboratoryU. S. Department of Energy626 Cochrans Mill Road Pittsburgh;

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原文格式 PDF
正文语种 eng
中图分类化学;
关键词
amines; rare-earth Elements; separation; silica; sorbents;

机译：胺;稀土元素;分离;二氧化硅;吸附剂;

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1. Amine Sorbents for Selective Recovery of Heavy Rare‐Earth Elements (Dysprosium, Ytterbium) from Aqueous Solution [J] . Wang Qiuming, Kail Brian W., Wilfong Walter C., ChemPlusChem . 2020,第1期

机译：胺吸附剂从水溶液中选择性地恢复重稀土元素（镝，镱）
2. Synthesis of mesoporous and microporous amine and non-amine functionalized silica gels for the application of rare earth elements (REE) recovery from the waste water-understanding the role of pH, temperature, calcination and mechanism in Light REE and Heavy REE separation [J] . Ramasamy Deepika Lakshmi, Khan Shoaib, Repo Eveliina, Chemical engineering journal . 2017,第期

机译：介孔和微孔胺和非胺官能化硅胶的合成，用于应用稀土元素（REE）从废水中恢复 - 理解PH值，温度，煅烧和机理在轻质雷伊和重型REE分离中的作用
3. Rare Earth Elements Ytterbium (III) Adsorption from Aqueous Solution onto the Nanometer Silica Powders [J] . Liu Shuxin, Zhang Lin, Jiang Xiaodong, Journal of nanoscience and nanotechnology . 2017,第12期

机译：稀土元素YTTTERBIUM（III）从水溶液吸附到纳米二氧化硅粉末上
4. Adsorbents for Selective Recovery of Heavy Rare Earth Elements [C] . Takeshi Ogata, Hirokazu Narita, Mikiya Tanaka Rare metal technology 2017 . 2017

机译：用于选择性回收重稀土元素的吸附剂
5. Nuclear Magnetic Resonance and Relaxation in Ferromagnetic Heavy Rare Earth Metals : Terbium and Dysprosium [D] . Sano, Naokatsu -1

机译：铁磁重稀土金属的核磁共振和弛豫：b和Dy
6. Carbon Cloth Supported Nano-Mg(OH)2 for the Enrichment and Recovery of Rare Earth Element Eu(III) From Aqueous Solution [O] . Yinong Li, Chen Tian, Weizhen Liu, 2018

机译：碳布负载的纳米Mg（OH）2用于从水溶液中富集和回收稀土元素Eu（III）
7. Nanoporous Sorbents: Nanostructured Hybrid Materials for the Selective Recovery and Enrichment of Rare Earth Elements (Adv. Funct. Mater. 18/2014) [O] . Justyna Florek, François Chalifour, François Bilodeau, 2014

机译：纳米多孔吸附剂：纳米结构杂交材料，用于稀土元素的选择性恢复和富集（ADV。Funct。Matter。18/2014）

Amine Sorbents for Selective Recovery of Heavy Rare‐Earth Elements (Dysprosium, Ytterbium) from Aqueous Solution

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