Properties of porous carbon electrode material derived from biomass of coffee waste grounds for capacitive deionization. (2022)

• Record Type: Journal Article
• Authors: Hadebe, Lungile; Cele, Zamani; Gumbi, Bhekumuzi
• Is Part Of: Materials today. Volume 56:Part 4(2022)
• Page Start: 2178
• Page End: 2183
• Publication Date: 2022
• Subjects: Porous carbon -- Biomass -- Desalination -- Capacitive deionization -- Characterization; Materials science -- Congresses -- Periodicals; 620.1
• DOI: 10.1016/j.matpr.2021.11.496
• Languages: English
• ISSNs: 2214-7853

Abstract

Abstract: In this work, biomass from coffee waste grounds was activated through hydrothermal treatment at 200 °C, followed by carbonization at 800 °C to produce porous carbon electrode. The material prepared was characterized using various instruments to establish capacitive deionization (CDI) properties: XRD, Raman spectroscopy, FTIR, BET, TEM, ZetaSizer, CV, EIS and GCD. The material obtained was porous (0.2607 cm 3 g −1 ) with surface area (323 m 2 g −1 ) and exhibited charge and discharge behavior with specific capacitance of 108 F g −1 . Characterization techniques confirmed that this renewable material can be used in CDI desalination, which can support sustainability of this technology.