Volume 23, Issue 110 (3-2014)                   J Mazandaran Univ Med Sci 2014, 23(110): 154-163 | Back to browse issues page

XML Persian Abstract Print

Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Amouei A, Ehrampoush M, Ghaneian M, Asgharzadeh F, Mousapour A, Parsian H. Removing cadmium from aqueous solutions by the Canola residuals. J Mazandaran Univ Med Sci. 2014; 23 (110) :154-163
URL: http://jmums.mazums.ac.ir/article-1-3388-en.html
Abstract:   (11241 Views)
Background and purpose: Recently, using agricultural wastes as a biosorbent in removal of heavy metals has been concentrated. The aim of this study was evaluation of Canola residuals on removal of cadmium from aqueous solutions. Materials and methods: This experimental study was performed in laboratory scale in a batch system. The effect of parameters such as contact time (5, 10, 15, 30, 45, 60, and 120 minutes), pH (2, 4, 6, and 7), initiative concentration of cadmium (15, 30, and 60 mg/l) and adsorbent doses (0.2, 0.6,1 g/100 ml) was evaluated. The sampled solutions of cadmium with known concentrations in 100 ml were prepared in Erlen Mayer of 150 ml. The samples were analyzed by atomic absorption spectrometry PG-999 instrument in wavelength of 228 nm. The results were compared using the Langmuir and Freundlich isotherms and kinetic models. Results: Maximum removal of cadmium was 95% happened in primary five minutes. Optimum pH was 6. Adsorption ability of cadmium increased with increasing initiative concentration of cadmium and adsorbent dose. The adsorption isotherm obeyed Freundlich model and the adsorption kinetic followed pseudo-second-order reaction. Conclusion: Based on the results, Canola residues could be used as a low-cost and efficient biosorbent for treatment of wastewater with cadmium.
Full-Text [PDF 280 kb]   (1154 Downloads)    
Type of Study: Research(Original) | Subject: Environmental Health

Add your comments about this article : Your username or Email:

Send email to the article author

© 2018 All Rights Reserved | Journal of Mazandaran University of Medical Sciences

Designed & Developed by : Yektaweb