Coal fly ash coated with carbon hybrid nanocomposite for remediation of cadmium (II) and photocatalytic application of the spent adsorbent for reuse

Autor: Emmanuel Christopher Umejuru, Eswaran Prabakaran, Kriveshini Pillay
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Results in Materials, Vol 7, Iss , Pp 100117- (2020)
Druh dokumentu: article
ISSN: 2590-048X
DOI: 10.1016/j.rinma.2020.100117
Popis: In this study, coal fly ash coated with a carbon hybrid nanocomposite (CFA/C HNCPs) was synthesised using a hydrothermal method and applied for the adsorption of cadmium ions (Cd2+) from aqueous solution. The possibility of reusing the spent adsorbent (Cd2+ loaded adsorbent referred to CFA/C–Cd2+ HNCPs) for the photocatalytic degradation of methylene blue dye (MB) was also investigated. CFA/C HNCPs exhibited rapid adsorption of Cd2+ ions through a pseudo second order kinetics model whereas the data was well fitted by the Langmuir Isotherm model. In addition, the Cd2+ loaded spent adsorbent played an important role for the photocatalytic degradation of MB with a percentage degradation of 97.41%. Interestingly, this is a new approach for the reuse of Cd2+ adsorbed material for photocatalytic application, which has significant environmental impact for reduction of waste derived from conventional adsorption techniques.
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