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Utilisation of bubber wood shavings for the removal of Cu(II) and Ni(II) from aqueous solution

Nordin, Nordiana and Zakaria, Zainul Akmar and Ahmad, Wan Azlina (2011) Utilisation of bubber wood shavings for the removal of Cu(II) and Ni(II) from aqueous solution. Water, Air and Soil Pollution, 223 (4). pp. 1649-1659. ISSN 0049-6979

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Official URL: http://dx.doi.org/10.1007/s11270-011-0972-9

Abstract

The potential of heat and chemically treated rubber wood shavings (RWS) to remove Cu (II) and Ni(II) was evaluated at bench-scale by varying parameters such as initial Cu(II) and Ni(II) concentrations, contact time and adsorbent dosage. Maximum Cu(II) and Ni(II) uptake was achieved using NaOH-treated RWS after 5 h of contact time, pH 5.0 (Cu), 5.5 (Ni) and 6.0 (mixed-metal solution), initial Cu(II) and Ni(II) of 100 mg L-1 and RWS dosage of 0.3% (w/v). Point of zero charge (pHPZC) value of 4.35 suggests the appropriateness of pH range used. Higher Cu(II) and Ni(II) adsorption following NaOH treatment was due to smaller average pore diameter (34.63 Å), higher mesopore content and higher surface negativity charge. EDAX analysis confirmed the presence of Cu and Ni on the surface of the RWS. The importance of carboxyl and hydroxyl functional groups during Cu(II) and Ni(II) removal is supported by the FTIR analysis and good correlation (R 2 of 0.96–0.99) with the pseudo-secondorder adsorption kinetic model. The results indicate the potential of using RWS as an alternative adsorbent to remove Cu(II) and Ni(II) from industrial wastewaters.

Item Type:Article
Uncontrolled Keywords:adsorption, wood shavings, copper, nickel, kinetic
Subjects:Q Science > QD Chemistry
Divisions:Science
ID Code:29919
Deposited By: Yanti Mohd Shah
Deposited On:21 Apr 2013 03:31
Last Modified:30 Oct 2020 05:13

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