Pandi, Kalimuthu Lee, Da-won Choi, Jaeyoung 2024-01-19T16:33:21Z 2024-01-19T16:33:21Z 2022-01-10 2020-09-15 0167-7322 https://pubs.kist.re.kr/handle/201004/118115 This work describes the preparation of novel adsorbents based on a natural biomass-derived porous graphic carbon (PGC) as a backbone for the interfacial growth of zirconium-organic framework (UiO-66) using an in situ synthetic route for the adsorption of total arsenic from water. The pristine UiO-66 and their PGC loaded nanocomposites (UiO-66@PGCx%, where x = (5, 10, 20, and 50) % (wt/wt), were tested for the adsorption of As (III)/As(V) and batch adsorption results show that the UiO-66@PGC20% nanocomposite achieves superior removal efficiencies for As(III)/As(V), compared with other developed nanocomposites and pristine UiO-66. The developed adsorbents are highly pH dependent and selective in common co-existing anions except for F-, PO43- and humic acid. The adsorption data was fitted using Langmuir isotherm and pseudo-second-order kinetic models. The adsorption mechanism was revealed through FTIR and XPS analysis, and the chemisorption of As(III)/As(V) on the surface of the UiO-66@PGC20% nanocomposite was explored. The UiO-66@PGC20% nanocomposite exhibits better chemical stability under the adsorption-desorption process and similar to 500 and 651 bed volumes of As(III)/As(V) contaminated water were treated in continuous fixed-bed column, also reduced the As(III)/As(V) concentration to <10 mu g/L, which indicates that the UiO-66@PGC20% nanocomposite is a practical adsorbent in the field of arsenic remediation. (C) 2020 Elsevier B.V. All rights reserved. English ELSEVIER HYDROTHERMAL CARBONIZATION EFFICIENT REMOVAL CARBON MATERIALS UIO-66 WATER SURFACE WASTE SUPERCAPACITOR COMPOSITES MEMBRANES Facile synthesis of zirconium-organic frameworks@biomass-derived porous graphitic nanocomposites: Arsenic adsorption performance and mechanism Article 10.1016/j.molliq.2020.113552 1 JOURNAL OF MOLECULAR LIQUIDS, v.314 JOURNAL OF MOLECULAR LIQUIDS 314 scie scopus 000561905700034 2-s2.0-85086893621 Chemistry, Physical Physics, Atomic, Molecular & Chemical Chemistry Physics Article HYDROTHERMAL CARBONIZATION EFFICIENT REMOVAL CARBON MATERIALS UIO-66 WATER SURFACE WASTE SUPERCAPACITOR COMPOSITES MEMBRANES Metal organic-framework UiO-66 Porous graphitic carbon Nanocomposites Arsenic adsorption Breakthrough analysis