Construction of novel quaternary ammonium nitroxy-hybrid rhenium adsorbent system with dual mechanisms and separation research from rhenium (VII)/copper (II)

IF 6.3 2区 工程技术 Q1 ENGINEERING, CHEMICAL
Qian Cheng , Enming Luo , Lilin Gan , Wenzheng Luo , Dingfeng Yang , Hongquan Fu , Shuo Li
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Abstract

Rhenium (Re) is vital in the medicinal and energy sectors. However, its scarcity and the co-occurrence with copper (Cu) present ongoing challenges in developing adsorbents with high adsorption capacity and selectivity. Herein, a quaternary ammonium nitroxy-hybrid/polystyrene microsphere separation system (Tetra-DE-CMPS, Tetra-N-ACE-CMPS, Tetra-2N-ACE-CMPS) was designed for selective Re(VII)/Cu(II) separation. The results indicated that in an acidic pH range (2–6), Tetra-DE-CMPS exhibited a Re(VII) adsorption capacity of up to 734.82 mg·g−1, which could be reused at least 3 times. For selective separation of Re(VII)/Cu(II) mixtures, the separation factor SelRe/Cu could exceed 3.77; for Tetra-2N-ACE-CMPS, the SelRe/Cu value was 4.72. The adsorption mechanism between the adsorbents and Re(VII) was mainly electrostatic interaction and oxidation-reduction reaction. This novel adsorption system provided a brand-new perspective (nitrogen oxide hybridization and spatial effects) to explain outstanding Re adsorption capacity, excellent Re(VII)/Cu(II) selective separation ability, and a new reactivity mechanism for the design of Re(VII) adsorbents.

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来源期刊
Journal of water process engineering
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
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