Nurul Elia Aqila Abu Rahim, Nur Izyan Wan Azelee, Siti Fatimah Zaharah Mohd Fuzi, Nasratun Masngut, Zainul Akmar Zakaria, Azham Zulkharnain, Rosli Md Illias, Nor Hasmaliana Abdul Manas
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引用次数: 0
Abstract
Purpose of Review
Pollution from wastewater is a perpetual environmental issue worldwide that negatively impacts the ecosystem and human beings. The use of natural-based compounds such as cyclodextrin (CD) to remove pollutants from water and wastewater systems has been reported by various researchers. Nevertheless, its direct use in wastewater treatment is hampered by its water-soluble properties. Beta-cyclodextrin (β-CD) is a cyclic oligosaccharide compound that can effectively trap pollutants from wastewater by the formation of truncated inclusion complex with various molecules. Hence, it is the motivation of this article to review the effectiveness and the recent strategies of crosslinked-β-CD toward remediation of various pollutants from wastewater.
Recent Findings
The crosslinked-β-CD was found as an improvement for native β-CD in the purpose of wastewater pollutant remediation. Strategies in chemical crosslinking include the choice of suitable crosslinkers, the type of support materials, and surface modifications. It was observed that different strategies resulted in various degrees of performance of the composite β-CD adsorbents. The efficiency of adsorption process was influenced by the operational parameters such as pH, contact time, and initial pollutant concentration, whereby it was characterized by the recyclability, adsorption capacity, and mechanical strength. The emergence of nanotechnology has led to a great improvement to the existing composite-β-CD adsorbent by providing a large surface area, where it can be easily functionalized and modified toward the targeted molecules.
Summary
Crosslinking is a versatile method for developing a composite-β-CD adsorbent for pollutant uptake as it employs a simple technique and performs a simple separation process with moderate operational conditions.
Graphical Abstract
The 3D structure of β-cyclodextrin resembles a truncated cone, having characteristics of hydrophilic surface and hydrophobic cavity and capable to trap molecules inside its cavity. The graphical abstract shows the flows of this review paper. The crosslinking strategies, the operational parameters, and the adsorption performance of the composite CD-adsorbents were reviewed and discussed
期刊介绍：
Current Pollution Reports provides in-depth review articles contributed by international experts on the most significant developments in the field of environmental pollution.By presenting clear, insightful, balanced reviews that emphasize recently published papers of major importance, the journal elucidates current and emerging approaches to identification, characterization, treatment, management of pollutants and much more.
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