A review of cryogels synthesis, characterization and applications on the removal of heavy metals from aqueous solutions.

Autor: Baimenov A; Environmental Science & Technology Group (ESTg), Department of Chemical & Materials Engineering, School of Engineering & Digital Sciences, Nazarbayev University, Kazakhstan; The Environment & Resource Efficiency Cluster (EREC), Nazarbayev University, Kazakhstan., Berillo DA; Water Technology Center (WATEC), Aarhus University, Denmark; School of Pharmacy and Biomolecular Sciences, University of Brighton, UK., Poulopoulos SG; Environmental Science & Technology Group (ESTg), Department of Chemical & Materials Engineering, School of Engineering & Digital Sciences, Nazarbayev University, Kazakhstan; The Environment & Resource Efficiency Cluster (EREC), Nazarbayev University, Kazakhstan., Inglezakis VJ; Environmental Science & Technology Group (ESTg), Department of Chemical & Materials Engineering, School of Engineering & Digital Sciences, Nazarbayev University, Kazakhstan; The Environment & Resource Efficiency Cluster (EREC), Nazarbayev University, Kazakhstan. Electronic address: vasileios.inglezakis@nu.edu.kz.
Jazyk: angličtina
Zdroj: Advances in colloid and interface science [Adv Colloid Interface Sci] 2020 Feb; Vol. 276, pp. 102088. Date of Electronic Publication: 2019 Dec 16.
DOI: 10.1016/j.cis.2019.102088
Abstrakt: The physical and chemical attributes of cryogels, such as the macroporosity, elasticity, water permeability and ease of chemical modification have attracted strong research interest in a variety of areas, such as water purification, catalysis, regenerative medicine, biotechnology, bioremediation and biosensors. Cryogels have shown high removal efficiency and selectivity for heavy metals, nutrients, and toxic dyes from aqueous solutions but there are challenges when scaling up from lab to commercial scale applications. This paper represents an overview of the most recent advances in the use of cryogels for the removal of heavy metals from water and attempts to fill the gap in the literature by deepening the understanding on the mechanisms involved, which strongly depend on the initial monomer composition and post-modification agent precursors used in synthesis. The review also describes the advantages of cryogels over other adsorbents and covers synthesis and characterization methods such as SEM/EDS, TEM, FTIR, zeta potential measurements, porosimetry, swelling and mechanical properties.
Competing Interests: Declaration of Competing Interest The authors declare no conflict of interest.
(Copyright © 2019 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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