Abstract
A new adsorbent based on thermal modification of activated carbon impregnated by nickel(II) nitrate was prepared and utilized for arsenic enrichment from aqueous solution. Various ratios of the impregnating agent to carbon mass were analyzed for the evaluation of arsenic adsorption capacity and selectivity. The properties of As(V) ions affecting the adsorption process on the prepared activated carbon were studied. The carbon impregnated with 10% Ni(NO3)2 and thermally treated at 250°C exhibited the highest adsorption capacity and selectivity towards arsenic ions. The physical and chemical properties of the Ni-loaded activated carbon were investigated using scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). These studies confirmed that the surface reactions of nickel oxides or hydroxides with arsenate ions enhanced the arsenic adsorption on the Ni-loaded activated carbon. Enrichment of arsenic from environmental samples onto the studied adsorbent was tested and successfully applied for As determination using the carbon slurry sampling technique for graphite furnace atomic absorption spectrometry determination (GFAAS) using the standard calibration method.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
