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Lima Paulino JCP, da Silva AF, da Silva Santos DH, de Carvalho Nagliate P, Meili L. Hotspots and Trends of Layered Double Hydroxide-based Adsorbents for Polluted Water Treatment: Insights from Bibliometric Analysis. ENVIRONMENTAL MANAGEMENT 2023; 71:1098-1109. [PMID: 36539637 DOI: 10.1007/s00267-022-01770-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Accepted: 12/09/2022] [Indexed: 06/17/2023]
Abstract
The use of layered double hydroxides (LDHs) as adsorbent for water treatment has been gaining relevance in recent years. In this context, this work aimed to map, through a bibliometric study, the extent of research that deals with the theme. The scientific database used was the Web of Science, and the chronology of the search consideredthe period from 1997 to 2022. The bibliometix R-package and VOSviewer software were used in this study. The searches retrieved a total of 663 documents, from 69 countries, distributed among all continents, which China (328), India (51) and Japan (40) were the most productive countries. Important journals in the environmental area and with high impact factor, such as Chemical Engineering Journal (44), Applied Clay Science (38), Journal of Hazardous Materials (35) and Chemosphere (27) most published in the area. The network of keywords used by the authors indicates that the publications retrieved deal mainly with aspects related to the efficiency of (LDHs) in the removal of different pollutants, the composition, the synthesis route and the association with other materials and/or techniques. The result of this study constitutes an important tool for directing future research on the subject.
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Affiliation(s)
- Juliana Cristina Pereira Lima Paulino
- Laboratory of Processes, Center of Technology, Federal University of Alagoas, Av. Lourival de Melo Mota, s/n, Campus A. C. Simões, Tabuleiro dos Martins, Maceió, AL, 57072-970, Brazil
| | - Anamália Ferreira da Silva
- Laboratory of Processes, Center of Technology, Federal University of Alagoas, Av. Lourival de Melo Mota, s/n, Campus A. C. Simões, Tabuleiro dos Martins, Maceió, AL, 57072-970, Brazil
| | - Danilo Henrique da Silva Santos
- Laboratory of Processes, Center of Technology, Federal University of Alagoas, Av. Lourival de Melo Mota, s/n, Campus A. C. Simões, Tabuleiro dos Martins, Maceió, AL, 57072-970, Brazil
| | - Patrícia de Carvalho Nagliate
- School of Nursing, Federal University of Alagoas, Av. Lourival de Melo Mota, s/n, Campus A. C. Simões, Tabuleiro dos Martins, Maceió, AL, 57072-970, Brazil
| | - Lucas Meili
- Laboratory of Processes, Center of Technology, Federal University of Alagoas, Av. Lourival de Melo Mota, s/n, Campus A. C. Simões, Tabuleiro dos Martins, Maceió, AL, 57072-970, Brazil.
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IL-Functionalized Mg 3Al-LDH as New Efficient Adsorbent for Pd Recovery from Aqueous Solutions. Int J Mol Sci 2022; 23:ijms23169107. [PMID: 36012371 PMCID: PMC9409223 DOI: 10.3390/ijms23169107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 08/10/2022] [Accepted: 08/11/2022] [Indexed: 11/16/2022] Open
Abstract
Palladium is a noble metal of the platinum group metals (PGMs) with a high value and major industrial applications. Due to the scarce palladium resources, researchers' attention is currently focused on Pd ions recovery from secondary sources. Regarding the recovery process from aqueous solutions, many methods were studied, amongst which adsorption process gained a special attention due to its clear advantages. Moreover, the efficiency and the selectivity of an adsorbent material can be further improved by functionalization of various solid supports. In this context, the present work aims at the synthesis and characterization of Mg3Al-LDH and its functionalization with ionic liquid (IL) (Methyltrialkylammonium chloride) to obtain adsorbent materials with high efficiency in Pd removal from aqueous solutions. The maximum adsorption capacity developed by Mg3Al-LDH is 142.9 mg Pd., and depending on the functionalization method used (sonication and co-synthesis, respectively) the maximum adsorption capacity increases considerably, qmax-Mg3Al IL-US = 227.3 mg/g and qmax-Mg3Al IL-COS = 277.8 mg/g.
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