Preparation of half-coated manganese oxide lithium ion-sieve precursor with low manganese dissolution loss for lithium recovery

IF 6.3 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of water process engineering Pub Date : 2025-04-28 DOI:10.1016/j.jwpe.2025.107785

Ping Liu, Xiaolong Yan, Zhen Chen, Yuanhang Qin, Li Yang, Jiayu Ma

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Abstract

Approximately 64 % of lithium resources exist in liquid form, and adsorption is considered as an effective method for lithium extraction. Among various lithium extraction materials, manganese oxide lithium ion-sieve has shown great promise as adsorbents for recovering lithium from solution. However, reducing manganese dissolution loss of manganese oxide lithium ion-sieve remains to be a huge challenge. In this work, a half-coated Li₄Mn₅O₁₂@Li₂MnO₃ (HC-LMO) precursor was synthesized using solid-phase combustion method. The stability of the HC-LMO adsorbent was improved by adjusting the proportion of acid-resistant shell Li₂MnO₃. The experimental results demonstrate that the manganese dissolution loss in HC-HMO (Lithium ion-sieve obtained by Li⁺-H⁺ exchange of LMO, 0.8 %) was significantly lower compared to that in HMO (Lithium ion-sieve obtained by Li⁺-H⁺ exchange of LMO, 2.1 %) after 5 cycles. Additionally, the adsorption capacity of HC-HMO for Li⁺ ions decreased by 3.9 %, whereas that of HMO without an acid-resistant shell decreased by 12.5 %. The Li₂MnO₃ contributing to the enhanced stability of HC-LMO during acid treatment. The HC-LMO exhibits a simple synthesis method and excellent cycling stability.

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低锰溶失半包覆氧化锰锂离子筛前驱体的制备及锂回收

约64%的锂资源以液态形式存在，吸附法被认为是提取锂的有效方法。在各种锂提取材料中，锰氧化物锂离子筛作为从溶液中回收锂的吸附剂具有很大的应用前景。然而，降低锰氧化物锂离子筛的锰溶解损失仍然是一个巨大的挑战。本文采用固相燃烧法合成了半包覆Li4Mn5O12@Li2MnO3 （HC-LMO）前驱体。通过调整耐酸壳型Li2MnO3的比例，提高了HC-LMO吸附剂的稳定性。实验结果表明，经过5次循环后，HC-HMO （LMO的Li+-H+交换制得的锂离子筛）中锰的溶解损失显著低于HMO （LMO的Li+-H+交换制得的锂离子筛）中锰的溶解损失2.1%。此外，HC-HMO对Li+离子的吸附量下降了3.9%，而没有耐酸外壳的HMO对Li+离子的吸附量下降了12.5%。在酸处理过程中，Li2MnO3有助于提高HC-LMO的稳定性。HC-LMO合成方法简单，循环稳定性好。

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来源期刊

Journal of water process engineering Biochemistry, Genetics and Molecular Biology-Biotechnology

CiteScore

10.70

自引率

8.60%

发文量

846

审稿时长

24 days

期刊介绍： The Journal of Water Process Engineering aims to publish refereed, high-quality research papers with significant novelty and impact in all areas of the engineering of water and wastewater processing . Papers on advanced and novel treatment processes and technologies are particularly welcome. The Journal considers papers in areas such as nanotechnology and biotechnology applications in water, novel oxidation and separation processes, membrane processes (except those for desalination) , catalytic processes for the removal of water contaminants, sustainable processes, water reuse and recycling, water use and wastewater minimization, integrated/hybrid technology, process modeling of water treatment and novel treatment processes. Submissions on the subject of adsorbents, including standard measurements of adsorption kinetics and equilibrium will only be considered if there is a genuine case for novelty and contribution, for example highly novel, sustainable adsorbents and their use: papers on activated carbon-type materials derived from natural matter, or surfactant-modified clays and related minerals, would not fulfil this criterion. The Journal particularly welcomes contributions involving environmentally, economically and socially sustainable technology for water treatment, including those which are energy-efficient, with minimal or no chemical consumption, and capable of water recycling and reuse that minimizes the direct disposal of wastewater to the aquatic environment. Papers that describe novel ideas for solving issues related to water quality and availability are also welcome, as are those that show the transfer of techniques from other disciplines. The Journal will consider papers dealing with processes for various water matrices including drinking water (except desalination), domestic, urban and industrial wastewaters, in addition to their residues. It is expected that the journal will be of particular relevance to chemical and process engineers working in the field. The Journal welcomes Full Text papers, Short Communications, State-of-the-Art Reviews and Letters to Editors and Case Studies