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Modelling of cadmium (II) uptake from aqueous solutions using treated rice husk: fixed - Bed studies

Garba, A. and Nasri, N. S. and Basri, H. and Zain, H. M. and Hayatu, U. S. and Abdulrasheed, A. and Mohsin, R. and Majid, Z. A. and Rashid, N. M. (2017) Modelling of cadmium (II) uptake from aqueous solutions using treated rice husk: fixed - Bed studies. Chemical Engineering Transactions, 56 . pp. 229-234. ISSN 2283-9216

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Abstract

Rice husk is an agricultural waste material obtained mainly from rice mills. Treated rice husk was evaluated as a sorbent for cadmium (II) ions removal from solutions by utilising fixed-bed adsorption mode. In this study, the influence of flow rate (3 and 9 mL/min), adsorbent heights of (0.9, 1.8 and 2.8 cm) and influent cadmium ions concentration of (5 and 20 mg/L) on the sorption capacity of the adsorbent in a fixed-bed column were explored. The highest uptake of 87 % was obtained using 20 mg/L initial Cd (II) solution was achieved at high flow rate of 9 mL/min and a bed height of 2.8 cm. The experimental results obtained from the column adsorption studies were correlated with the Thomas, Yoon-Nelson and Adams-Bohart models. The modelling results for the adsorption indicated that the Adams-Bohart model fitted well over the other models.

Item Type:Article
Uncontrolled Keywords:Rice husk, fixed-bed adsorption
Subjects:T Technology > TP Chemical technology
Divisions:Chemical Engineering
ID Code:75866
Deposited By: Widya Wahid
Deposited On:30 May 2018 12:04
Last Modified:30 May 2018 12:04

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