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Fe removal by adsorption using ash from oil palm factory

Isa, M.H. and Al-Madhoun, W.A. and Aziz, H.A. and Asaari, F.A.H. and Sabiani, N.H.M. (2004) Fe removal by adsorption using ash from oil palm factory. In: Third National Civil Engineering Conference (AWAM 2004), School of Civil Engineering, Universiti Sains Malaysia, Malaysia, July, 2004, Penang, Malaysia.

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Abstract

Heavy metals are often present in water and wastewater as contaminants. From the public health and environmental protection point of view, it is important that their concentrations be limited to permissible levels. Technologies for heavy metals removal include ion exchange, chemical precipitation, reverse osmosis, etc. which are often ineffective or expensive. Adsorption is a commonly used method for the removal of heavy metals from aqueous solutions. However, for the process to be economical, the adsorbent should be easily and cheaply available in abundance and it should require minimal or no pre-treatment; for expensive pre-treatment procedures would add to the overall treatment cost. The present study focuses on iron (Fe) removal by adsorption using oil palm by-products (fibre, shell, ash) without pre-treatment or activation. The results show that among the materials tested, ash was the most effective adsorbent. The optimum agitation time and optimum pH were 90 minutes and 5 respectively. The removal followed the Freundlich isotherm closely with R2 = 0.9479. Desorption of over 98 % was achieved with 0.15 N HCl.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:low cost, adsorption, iron (Fe), oil palm by-products, ash
Subjects:T Technology > TD Environmental technology. Sanitary engineering
Departments / MOR / COE:Departments > Civil Engineering
ID Code:1375
Deposited By: Assoc Prof Dr Mohamed Hasnain Isa
Deposited On:21 Apr 2010 07:16
Last Modified:19 Jan 2017 08:27

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