Cd (II) and Zn (II) biosorption on Lactarius piperatus macrofungus: Equilibrium isotherm and kinetic studies

In this study, biosorption of cadmium (Cd) (II) and zinc (Zn) (II) ions from synthetic wastewater was investigated using Lactarius piperatus macrofungus biomass in batch conditions. The presence of amino, carboxylic, sulfonate, and phosphate groups was identified along with shifts and decreased inte...

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Published in:Environmental progress & sustainable energy Vol. 33; no. 4; pp. 1158 - 1170
Main Authors: Nagy, Boldizsar, Szilagyi, Botond, Majdik, Cornelia, Katona, Gabriel, Indolean, Cerasella, Măicăneanu, Andrada
Format: Journal Article
Language:English
Published: Hoboken, NJ Blackwell Publishing Ltd 01.12.2014
Wiley
Subjects:
Adsorption
Applied sciences
Biological and medical sciences
biosorption
Biotechnology
Chemical engineering
CMA-ES algorithm
Exact sciences and technology
Fundamental and applied biological sciences. Psychology
General purification processes
Lactarius
Lactarius piperatus
metal ions
Methods. Procedures. Technologies
Others
Pollution
regression analysis
Various methods and equipments
Wastewaters
Water treatment and pollution
Phosphates
Second order
Deformation
Adsorption isotherm
Adsorption capacity
Metal ion
Biomass
Modeling
Optimization
Cell wall
Waste water
Batchwise
pH
CMA-ES algorithm
Fourier-transformed infrared spectrometry
Lactarius piperatus
Scanning electron microscopy
Stirring
Regression analysis
Covariance matrix
Algorithm
metal ions
Langmuir isotherm
Heavy metal
Kinetic model
Biosorption
Kinetics
Aqueous solution
ISSN:1944-7442, 1944-7450
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Summary:In this study, biosorption of cadmium (Cd) (II) and zinc (Zn) (II) ions from synthetic wastewater was investigated using Lactarius piperatus macrofungus biomass in batch conditions. The presence of amino, carboxylic, sulfonate, and phosphate groups was identified along with shifts and decreased intensities of the main peaks (Fourier transform infrared spectroscopy), and deformations of macrofungus cell walls after heavy metals biosorption (scanning electron microscopy) were observed. The effects of stirring rate, biomass quantity, initial metal ion concentration, contact time, pH, and temperature were studied. The optimum parameters were established as follows: 700 rpm, 2 g (for Cd) and 5 g (for Zn) biosorbent, pH in the range of 5.49–5.72, and 296 K. By comparing various kinetic models, the biosorption process was found to follow the pseudo‐second‐order kinetics. Isotherm models were tested using linear and nonlinear (Covariance Matrix Adaptation Evolution Strategy optimization algorithm) regression analyses. Maximum adsorption capacities calculated using Langmuir isotherm were 10.65 mg/g for Cd (II) and 7.54 mg/g for Zn (II). Results also showed that nonlinear regression analysis has better performances, with Sips model, describing process the best. The results indicated that L. piperatus can be used as a cost‐effective biosorbent for the removal of Cd (II) and Zn (II) ions from aqueous solution. © 2013 American Institute of Chemical Engineers Environ Prog, 33: 1158–1170, 2014
Bibliography:istex:6E0A579868999A5A7438DA5E0857BBB39745EEFB
ark:/67375/WNG-2DR8F0NH-D
ArticleID:EP11897
This article was published online on 14 November 2013. An error was subsequently identified. This notice is included in the online and print versions to indicate that both have been corrected 28 November 2013.
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ISSN:1944-7442
1944-7450
DOI:10.1002/ep.11897