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Advances in Physical Chemistry
Volume 2016 (2016), Article ID 9497378, 7 pages
Research Article

Remediation of Rhodamine B Dye from Aqueous Solution Using Casuarina equisetifolia Cone Powder as a Low-Cost Adsorbent

Faculty of Science, Universiti Brunei Darussalam, Jalan Tungku Link, Pengkalan Gadong, Bandar Seri Begawan BE1410, Brunei Darussalam

Received 28 July 2016; Accepted 22 September 2016

Academic Editor: Leonardo Palmisano

Copyright © 2016 Muhammad Khairud Dahri et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The removal of toxic dye rhodamine B (RB) from aqueous solution was achieved by using Casuarina equisetifolia cone (CEC) as an adsorbent. Batch experiment method was used in order to investigate the effects of contact time, pH, temperature, ionic strength, and dye concentration on the adsorption process. Kinetics and isotherm theoretical models were applied on the experimental data and it was found that the pseudo-2nd-order kinetics and the Langmuir isotherm model best fitted into the data. The Langmuir maximum adsorption capacity for CEC was determined as 49.5 mg g−1. The adsorption of RB onto CEC is thermodynamically favourable, feasible, and endothermic in nature.