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Biosorption and bioaccumulation of Cu (II) from aqueous solution: using Mesorhizobium amorphae strain CCNWGS0123 isolated from mine tailing - Couverture souple

Mohmad, Osama; Elfeil, Wael; Wei, Gehong

 
9783659224225: Biosorption and bioaccumulation of Cu (II) from aqueous solution: using Mesorhizobium amorphae strain CCNWGS0123 isolated from mine tailing
Couverture souple
ISBN 10 : 3659224227 ISBN 13 : 9783659224225
Editeur : LAP LAMBERT Academic Publishing, 2012

Synopsis

Our studies showed that both dead and live cells of M. amorphae CCNWGS0123 are effective absorbents for copper removal from aqueous solution. The removal of copper increased significantly by increasing the pH up to 5.0, agitation speed 150 rpm and temperature 28°C. Equilibrium was reached within 30 min. The absorption isotherms could be well fitted by the Langmuir equation followed by the Freundlich equation. The highest removal of initial copper concentration was achieved at a dosage of 100 mg/L and the highest biosorption capacity was found at an initial concentration of 0.5 g/L Cu (II). Fourier transform-infrared spectroscopy (FT-IR) analysis indicated that many functional groups, such as O-H, N-H, C-H, C=O, -NH, -CN, C-N, C-O, amide (-I, -II, -III), and unsaturated alkenes, alkyls and aromatic groups on the cell surface, were involved in the interaction between CCNWGS0123 and Cu ion. Scanning electron microscope (SEM) results showed deformation, aggregation and cell-surface damage due to the precipitation of copper on the cell surface. Energy Dispersive X-ray Scanning (EDX) showed three distinct peaks at 1.1 keV, 8.1 keV and 8.9 keV, implying that copper ions have been absorbe

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À propos de l'auteur

Osama A.A. Mohamad, PhD: Studied Environment Science at Suez Canal University, El-Arish, Egypt and got PhD on Environmental Microbiology and Biotechnology at Northwest A&F University, China. Work as Lecture at Suez Canal University

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Éditeur
LAP LAMBERT Academic Publishing
Date d'édition
2012
Langue
anglais
ISBN 10 
3659224227
ISBN 13 
9783659224225
Reliure
Broché
Nombre de pages
104
Coordonnées du fabricant
non disponible
Personne responsable
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