Self-purification of marine environments for heavy metals: a study on removal of lead(II) and copper(II) by cuttlebone

The aim of this study was to determine adsorption properties of cuttlebone, cuttlefish bone as dead biomass, for lead(II) and copper(II) from aqueous solutions. Adsorption kinetic, isotherm and effect of pH (in the range of 2.0-7.0) were investigated in a single component batch system at room temper...

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Bibliographic Details
Published in:Water science and technology 2017-01, Vol.75 (2), p.474-481
Main Authors: Dobaradaran, Sina, Nabipour, Iraj, Keshtkar, Mozhgan, Ghasemi, Fatemeh Faraji, Nazarialamdarloo, Tayebeh, Khalifeh, Farzaneh, Poorhosein, Marjan, Abtahi, Mehrnoosh, Saeedi, Reza
Format: Article
Language:English
Subjects:
Adsorbents
Adsorption
Aqueous solutions
Beryllium
Biomass
Capacity
Copper
Copper compounds
Equilibrium
Experiments
Fluorides
Fourier transforms
Hazardous materials
Heavy metals
Isotherms
Lead
Marine environment
Marine molluscs
Mathematical models
Metal ions
Metals
Nanomaterials
Nitrates
pH effects
Purification
Removal
Self-purification
Solutions
Sorption
Surface chemistry
Wastewater
Wastewater treatment
Water purification
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Summary:The aim of this study was to determine adsorption properties of cuttlebone, cuttlefish bone as dead biomass, for lead(II) and copper(II) from aqueous solutions. Adsorption kinetic, isotherm and effect of pH (in the range of 2.0-7.0) were investigated in a single component batch system at room temperature (25 ± 1 °C). The heavy metal adsorption by cuttlebone was relatively rapid and reached equilibrium in 120 min in all the cases. The pseudo-second order rate equation described the adsorption kinetic of both the ions. The adsorption capacities of Pb and Cu were constantly increased by pH and the optimum condition of pH was determined to be 7.0. The Freundlich model was better fitted than other models with the isotherm data, indicating sorption of the metal ions in a heterogeneous surface. According to the Langmuir model, the maximum adsorption capacities of cuttlebone for Pb and Cu were determined to be 45.9 and 39.9 mg/g, respectively. The results indicated cuttlebone as a promising adsorbent for Pb and Cu , which presents a high capacity of self-purification in marine environments and also can be used for removal of the metal ions from water and wastewater.
ISSN:0273-1223
1996-9732
DOI:10.2166/wst.2016.533