Journal
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
Volume 1, Issue 3, Pages 369-377Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jece.2013.05.017
Keywords
Biosorption; Spirogyra sp.; Green algae; Pretreated; Heavy metal; Methylene blue
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Funding
- Scientific Research Project Fund of Cumhuriyet University [M-326]
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The raw and pretreated Spirogyra sp. were used for the single and binary removal of Cu(II), Ni(II) and methylene blue (MB) from aqueous solution. The effects of pH, contact time, initial pollutant concentration, biosorbent dosage and ionic strength (NaCl) on removal efficiency were investigated. The biosorption capacity of Cu(II), Ni(II) and MB onto raw and pretreated Spirogyra sp. was found as the following order: MB > Cu > Ni and Ni > MB > Cu. The pseudo-first order, pseudo-second order and the intraparticle diffusion models were applied to the experimental data. The thermodynamic parameters (Delta H, Delta S, Delta G) were calculated. Desorption studies was also done. The structural characteristics of biosorbent were determined through FT-IR spectrums and SEM images. Also, binary biosorption studies showed that removal efficiency of dominant pollutant reduced by the presence of the other ion in aqueous solution. (C) 2013 Elsevier Ltd All rights reserved.
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