Removal of Heavy Metals from Wastewaters and Other Aqueous Streams by Pressure-Driven Membrane Technologies: An Outlook on Reverse Osmosis, Nanofiltration, Ultrafiltration and Microfiltration Potential from a Bibliometric Analysis.

IF 3.3 4区 工程技术 Q2 CHEMISTRY, PHYSICAL
Katherinne Castro, Ricardo Abejón
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引用次数: 0

Abstract

A bibliometric study to analyze the scientific documents released until 2024 in the database Scopus related to the use of pressure-driven membrane technologies (microfiltration, ultrafiltration, nanofiltration and reverse osmosis) for heavy metal removal was conducted. The work aimed to assess the primary quantitative attributes of the research in this field during the specified period. A total of 2205 documents were identified, and the corresponding analysis indicated an exponential growth in the number of publications over time. The contribution of the three most productive countries (China, India and USA) accounts for more than 47.1% of the total number of publications, with Chinese institutions appearing as the most productive ones. Environmental Science was the most frequent knowledge category (51.9% contribution), followed by Chemistry and Chemical Engineering. The relative frequency of the keywords and a complete bibliometric network analysis allowed the conclusion that the low-pressure technologies (microfiltration and ultrafiltration) have been more deeply investigated than the high-pressure technologies (nanofiltration and reverse osmosis). Although porous low-pressure membranes are not adequate for the removal of dissolved heavy metals in ionic forms, the incorporation of embedded adsorbents within the membrane structure and the use of auxiliary chemicals to form metallic complexes or micelles that can be retained by this type of membrane are promising approaches. High-pressure membranes can achieve rejection percentages above 90% (99% in the case of reverse osmosis), but they imply lower permeate productivity and higher costs due to the required pressure gradients.

利用压力驱动膜技术去除废水和其他水流中的重金属:通过文献计量分析展望反渗透、纳滤、超滤和微滤的潜力。
一项文献计量学研究分析了截至 2024 年在 Scopus 数据库中发布的与使用压力驱动膜技术(微滤、超滤、纳滤和反渗透)去除重金属有关的科学文献。这项工作旨在评估特定时期内该领域研究的主要量化属性。共确定了 2205 份文件,相应的分析表明,随着时间的推移,出版物的数量呈指数增长。三个最有成果的国家(中国、印度和美国)的论文数量占论文总数的 47.1%以上,其中中国机构的论文数量最多。环境科学是最常见的知识类别(占 51.9%),其次是化学和化学工程。根据关键词的相对频率和完整的文献计量学网络分析可以得出结论,低压技术(微滤和超滤)比高压技术(纳滤和反渗透)得到了更深入的研究。虽然多孔低压膜不足以去除离子形式的溶解重金属,但在膜结构中加入嵌入式吸附剂,以及使用辅助化学物质形成可被这类膜截留的金属复合物或胶束,都是很有前景的方法。高压膜可以达到 90% 以上的截留率(反渗透为 99%),但由于所需的压力梯度,它们意味着较低的渗透生产率和较高的成本。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Membranes
Membranes Chemical Engineering-Filtration and Separation
CiteScore
6.10
自引率
16.70%
发文量
1071
审稿时长
11 weeks
期刊介绍: Membranes (ISSN 2077-0375) is an international, peer-reviewed open access journal of separation science and technology. It publishes reviews, research articles, communications and technical notes. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. Full experimental and/or methodical details must be provided.
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