Adsorption of Ni(II) from aqueous solution by <i>Bacillus subtilis</i>
DESALINATION AND WATER TREATMENT, vol.49, no.1-3, pp.74-80, 2012 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 49 Issue: 1-3
- Publication Date: 2012
- Doi Number: 10.1080/19443994.2012.708201
- Journal Name: DESALINATION AND WATER TREATMENT
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Page Numbers: pp.74-80
- Keywords: Nickel, Adsorption, Bacilllus subtilis, Low-cost adsorbent
- Dokuz Eylül University Affiliated: No
Abstract
This work reports the application of Bacillus subtilis as adsorbent for the removal of Ni(II) from aqueous solution. Batch experiments were conducted to study the effects of several parameters such as, contact time, initial concentration of adsorbate (25-200 mg L-1), temperature (298-318 K), and adsorbent dose (0.05-0.4 g) on Ni(II) adsorption. Equilibrium adsorption isotherms and kinetics were also investigated. The equilibrium experimental data were analyzed by Freundlich and Langmuir models. The kinetic data obtained with different initial concentration and temperature were analyzed using a pseudo-first-order, pseudo-secondorder, and intraparticle diffusion equations. The results showed that this novel adsorbent had a high adsorption capacity, making it suitable for use in the treatment of Ni(II)-enriched wastewater.