Title

Biosorption of Heavy Metal Ions from Aqueous Solutions by Nonliving Scenedesmus Quadricauda Biomass

Abstract

In present study, biosorptions of lead (II), cadmium (II), cobalt (II) and chromium (III) ions from water were studied and dead algae biomass (Scenedesmus quadricauda Chodat) was used as natural and biological sorbents. The effects of pH, contact time and metal concentration on the biosorption capacity were investigated. The maximum biosorption capacities for Co (II), Cr (III), Cd (II) and Pb (II) were found to be 32.8, 20.3, 63.9 and 123.0 mg/g, respectively. The experiments showed that when pH increased, an increase in the biosorption capacity of the biomass was observed. Freundlich and Langmuir isotherm models were applied to experimental equilibrium data of metal ions adsorption and the value of RL for Co (II), Cr (III), Cd (II) and Pb (II) was found to be 0.639, 0.580, 0.915 and 0.949, respectively. The algae biomass was effectively used as a sorbent for removal of metal ions from aqueous solutions.

Department(s)

Materials Science and Engineering

Keywords and Phrases

adsorption; aqueous solution; biomass; cation; equilibrium; heavy metal; isotherm; numerical model; pH; pollutant removal, algae; Scenedesmus quadricauda

International Standard Serial Number (ISSN)

10184619

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2012 Parlar Scientific Publications, All rights reserved.

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