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Separations
Special Issues
Solvent Absorption and Solvent Extraction Technology in Metal Recovery
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Solvent Absorption and Solvent Extraction Technology in Metal Recovery

A special issue of Separations (ISSN 2297-8739). This special issue belongs to the section "Purification Technology".

Deadline for manuscript submissions: closed (30 October 2023) | Viewed by 1939

Special Issue Editors

Dr. Wan Qian

E-Mail Website
Guest Editor
School of Resources and Environmental Engineering, Wuhan University of Science and Technology, Wuhan, China
Interests: solid waste treatment; metal recovery; clean utilization of vanadium resources
Dr. Chenye Wang

E-Mail Website
Guest Editor
CAS Key Laboratory of Green Process and Engineering, National Engineering Research Center of Green Recycling for Strategic Metal Resources, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
Interests: recycling of industrial solid waste; separation of similar metal
Prof. Dr. Yong Fan

E-Mail Website
Guest Editor
School of Resources and Environmental Engineering, Wuhan University of Science and Technology, Wuhan, China
Interests: separation and purification of mining and metallurgical resources; extraction of rare metals

Special Issue Information

Dear Colleagues,

Solvent extraction technology is a commonly used separation technology with high separation efficiency and wide applicability, which is widely applied in various fields

Given the current international situation and the rising prices of raw materials, the importance of metal resources in modern industrial development is becoming increasingly prominent. At the same time, through the effective recovery and reuse of metal resources, it is possible to reduce the consumption of natural resources and the pollution of the environment, which is also of great significance for environmental protection.

In this special issue, we invite papers that discuss the recent progress and results of metal recovery using solvent absorption and solvent extraction.

The topics include the development of novel solvents and extraction agents for metal recovery,  the solvent extraction and adsorption processes for applied metal recovery, the development of innovative solvent extraction processes for metal recovery from complex ores and industrial waste, and other new findings.

Dr. Wan Qian
Dr. Chenye Wang
Prof. Dr. Yong Fan
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Separations is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • solvent absorption
  • solvent extraction
  • metal recovery
  • secondary resource utilization
  • separation

Published Papers (1 paper)

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Research

15 pages, 4833 KiB  
Article
A Hydrothermal Synthesis Process of ZSM-5 Zeolite for VOCs Adsorption Using Desilication Solution
by Zhenhua Sun, Qingxiang Shu, Qikun Zhang, Shaopeng Li, Ganyu Zhu, Chenye Wang, Jianbo Zhang, Huiquan Li and Zhaohui Huang
Separations 2024, 11(2), 39; https://doi.org/10.3390/separations11020039 - 26 Jan 2024
Viewed by 1601
Abstract
ZSM-5 zeolite is a kind of high-value-added porous aluminosilicate zeolite. The use of the coal gasification slag utilization process by-product desilication liquid as a silicon raw material to replace the current raw materials such as water glass will help reduce production costs and [...] Read more.
ZSM-5 zeolite is a kind of high-value-added porous aluminosilicate zeolite. The use of the coal gasification slag utilization process by-product desilication liquid as a silicon raw material to replace the current raw materials such as water glass will help reduce production costs and achieve high-value utilization of solid waste. ZSM-5 zeolites for volatile organic compounds (VOCs) adsorption were prepared by a one-step hydrothermal method using the desilication solution prepared from coal gasification slag as the main silicon source and sodium source. The effects of crystallization reaction time, the crystallization temperature, the Na2O/SiO2 molar ratio, and the SiO2/Al2O3 molar ratio on the relative crystallinity and the specific surface area of the ZSM-5 zeolite were investigated and optimized. The optical reaction conditions were as follows: a crystallization time of 12 h, a crystallization temperature of 170 °C, a Na2O/SiO2 molar ratio of 0.2, and a SiO2/Al2O3 molar ratio of 200. The optimal ZSM-5 zeolite synthesized is hexagonal, with regular grains, a relative crystallinity of 101.48%, a specific surface area of 337.48 m2·g−1, and a pore volume of 0.190 cm3·g−1. And the optimal ZSM-5 zeolite was composed of SiO2 content of 97.52 wt%, Al2O3 content of 1.58 wt%, Na2O content of 0.33 wt%, and SiO2/Al2O3 molar ratio of 104.93. Na2O/SiO2 molar ratio is 0.0033. The results of static adsorption experiments show that the static adsorption capacities of ZSM-5 zeolite for p-xylene, benzene, toluene, and butyl acetate were 118.85, 69.98, 68.74, and 95.85 mg·g−1, respectively, which can effectively adsorb VOCs. The synthetic process of the ZSM-5 zeolite is a simple preparation process and short in synthesis time. The results of this study not only help to realize the high-value utilization of silicon components in solid waste, but also provide an economical and effective way to synthesize VOCs adsorption materials. Full article
(This article belongs to the Special Issue Solvent Absorption and Solvent Extraction Technology in Metal Recovery)
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