The effects of chemical modification on adsorbent performance on water and wastewater treatment - A review. (December 2022)

• Record Type: Journal Article
• Authors: Amalina, Farah; Razak, Abdul Syukor Abd; Krishnan, Santhana; Zularisam, A.W.; Nasrullah, Mohd
• Is Part Of: Bioresource technology reports. Volume 20(2022)
• Publication Date: 2022-12
• Subjects: Adsorption -- Adsorbent -- Adsorbate -- Chemical modification -- Surface chemistry; Biomass energy -- Periodicals; Biotransformation (Metabolism) -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Waste products as fuel -- Periodicals; Waste products as fuel; Organic wastes; Factory and trade waste; Biotransformation (Metabolism); Biomass energy; Agricultural wastes; Periodicals; Electronic journals; 662.88
• DOI: 10.1016/j.biteb.2022.101259
• Languages: English
• ISSNs: 2589-014X

Abstract

Abstract: Current strategies for removing inorganic pollutants from wastewater are expensive, energy-intensive, and necessitate the disposal of producing toxic waste. Hence, there is a need for an effective, selective, and cost-effective adsorbent material. Adsorption has become one of the oldest and most recognized approaches for treating water and wastewater. As an indirect observation, adsorption performance is highly influenced by the surface phenomenon (physical and chemical) of the unmodified and modified precursor. The surface chemistry with the modification method and the material's composition substantially affects the surface's functions. The chemical approach of surface activation is a process that modifies the surface properties and structure of the material to increase the adsorption efficiency. The adsorbent modification could provide a versatile, low-cost, and sustainable solution to pollution of freshwater's inorganic point source. This paper focuses on presenting a comprehensive assessment of the selection and influences of chemical modification on various well-known adsorptive feedstocks. Graphical abstract: Unlabelled Image Highlights: Adsorption is a simple, practical, and effective water treatment process. Insoluble porous solids that can bind liquid or gaseous molecules to the surfaces. Conventional and non-conventional adsorbents have been studied for toxics removal. To develop inexpensive and efficient adsorbents for removing trace contaminants Techniques were adopted to design the adsorbents with chemically modified surfaces.