Optimisation of sugar cane activated carbon for arsenic(V) and arsenic(III) removal from water

Velasco-Perez, M. and Hiscock, K. M. ORCID: https://orcid.org/0000-0003-4505-1496 (2013) Optimisation of sugar cane activated carbon for arsenic(V) and arsenic(III) removal from water. Water Science and Technology: Water Supply, 13 (2). pp. 319-327. ISSN 1606-9749

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Abstract

This paper addresses the development of low-cost adsorbents for removal of arsenic from water in support of mitigation programmes in low and middle income countries. Activated carbon (AC) is a well established water treatment technology, but has high cost and low selectivity in respect of arsenic. AC made from agricultural by-products is a low-cost alternative to coal-based AC. In this study, the preparation parameters of sugar-cane activated carbon (SCAC) were optimised for arsenic (V) and arsenic(III) adsorption. The effect of preparation parameters on arsenic removal was investigated with a 23 factorial experiment. SCAC was characterised by the pH of zero charge, surface area, pore width distribution, particle size distribution and imaging under scanning electron microscopy. Activation temperature (AT) has a profound effect on arsenic adsorption; arsenic(V) adsorption increased from 2.8% at an AT of 873 K to 87.6% at an AT of 1,173 K. The percentage of arsenic removal from water has a strong positive correlation with surface area, and a strong negative correlation with micropore/pore volume ratio and the percentage in volume of particles with a size of 60-2,000 μm. In conclusion, this research shows that low-cost AC can be manufactured for removal of target pollutants, such as arsenic, from water.

Item Type: Article
Uncontrolled Keywords: activated carbon,arsenic,factorial design experiment,sugar cane,water treatment,water science and technology ,/dk/atira/pure/subjectarea/asjc/2300/2312
Faculty \ School: Faculty of Science > School of Environmental Sciences
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Depositing User: LivePure Connector
Date Deposited: 11 Oct 2022 10:31
Last Modified: 24 Oct 2022 07:33
URI: https://ueaeprints.uea.ac.uk/id/eprint/88952
DOI: 10.2166/ws.2013.030

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