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Optimisation of activated carbon production from date pits

Essa, Mohammed Hussein; Al-Zahrani, Muhammad A. and Nesaratnam, Suresh (2013). Optimisation of activated carbon production from date pits. International Journal of Environmental Engineering, 5(3) pp. 325–328.

DOI (Digital Object Identifier) Link: https://doi.org/10.1504/IJEE.2013.054708
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Abstract

This study investigates the optimal process conditions for activated carbon production from local date palm pits using response surface methodology (RSM). Box Behnken statistical technique was used to design the production process in order to determine the influence of activation temperature (300°C to 700°C), % H3PO4 (30% to 70%) and activation time (1 to 3 hours) on the BET surface area. Second-order model developed via regression analysis to describe the BET surface area response was found to be appropriate in predicting the responses within the experimental region to a considerable extent. Analysis of variance (ANOVA) revealed that the influence of the independent variables on the BET surface area is in the order: activation temperature > % H3PO4 > activation time with only temperature and % H3PO4 possessing moderate interaction. The maximum BET surface area from RSM optimisation was estimated to be 1,337.54.2 m²%g achievable at optimum conditions of 54% H3PO4 and 547°C carbonisation temperature at an activation time of 2.067 hours.

Item Type: Journal Item
Copyright Holders: 2013 Inderscience Enterprises Ltd.
ISSN: 1756-8471
Keywords: activated carbon; response surface methodology; RSM; surface area; date pits; date palms; ANOVA; optimisation.
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Engineering and Innovation
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Item ID: 38771
Depositing User: Suresh Nesaratnam
Date Deposited: 17 Oct 2013 08:46
Last Modified: 04 Oct 2016 11:31
URI: http://oro.open.ac.uk/id/eprint/38771
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