Production and characterisation of adsorbents synthesised by hydrothermal carbonisation of biomass wastes

• DOI: 10.1007/s42452-021-04273-5
• Publication Date: 2021-02-02T17:39:59Z
• Authors: E. Danso-Boateng; A. S. Mohammed; G. Sander; A. D. Wheatley; E. Nyktari; I. C. Usen
• Keywords: Hydrothermal Carbonization; Husk; Specific surface area; Carbon fibers

Abstract Surface structure and chemical properties of adsorbents are important factors required to understand the mechanism adsorption. The purpose this study was produce hydrochars from biomass using hydrothermal carbonisation (HTC) analyse their sorption capacities. used in were coco-peat (CP), coconut shell (CS), eggshell (ES), rice husk (RH) lemon peel (LP). operating conditions for HTC 200 °C 20 h residence time. characterisation methods consisted Scanning Electron Microscopy (SEM), Energy Dispersive X-Ray Spectroscopy (EDS), Fourier Transform Infrared Ray (FTIR) Spectroscopy, Brunauer, Emmett Teller (BET). results showed that improved capacities wastes. It found crispy flaky with more micro- meso-porous structures, indicating lignin other components denatured due carbonisation. This led creation active sites pollutant binding. a percentage increase carbon content decrease oxygen traces elements, compared corresponding raw biomass. major functional groups identified –OH –COOH. surface area which include CP (2.14 m 2 /g), CS (14.04 ES (0.50 RH (15.74 LP (6.89 /g) significantly those produced wastes have potential be as adsorbents.