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

Results in Materials

卷:7

Kriveshini Pillay¹  Emmanuel Christopher Umejuru²  Eswaran Prabakaran² 

[1] Corresponding author.;

[2] Department of Chemical Sciences, University of Johannesburg, Doornfontein Campus, Johannesburg, 2028, South Africa;

关键词: Coal flyash;    Carbon hybrid nanocomposite;    Cadmium;    Adsorption;    Photocatalytic reuse;   

DOI  :  

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown