Title :
Mechanism of Cu(II) Biosorption by Saccharomyces Cerevisiae
Author :
Dong, Limin ; Diao, Zhuo ; Du, Juan ; Jiang, Zhao ; Meng, Qingjuan ; Zhang, Ying
Author_Institution :
Sch. of Resource & Environ., Northeast Agric. Univ., Harbin, China
Abstract :
This paper studies how chemical modification influences the Saccharomyces cerevisiae adsorption on copper ion and the desorption of nitric acid, and carries out infrared spectrum analysis of native, adsorbing and desorbing saccharomyces cerevisiae. Results show that carboxyl and amino group in Saccharomyces cerevisiae play an important role in the process of adsorbing Cu(II). The adsorption on Cu(II) by Saccharomyces cerevisiae is mainly the process of surface adsorption. The process of biosorption on heavy metals is mainly reversible adsorption; however, there still exists irreversible adsorption. FTIR analysis further indicates that carboxyl and hydroxyl adsorption on Cu(II) is reversible adsorption, which amino group adsorption on Cu(II) is irreversible adsorption.
Keywords :
Fourier transform spectra; adsorption; biochemistry; biotransport; copper; infrared spectra; microorganisms; organic compounds; positive ions; Cu; FTIR analysis; Saccharomyces cerevisiae; amino group; carboxyl group; chemical modification; copper ion biosorption; heavy metals; nitric acid desorption; surface adsorption; Biochemical analysis; Chemical analysis; Copper; Electromagnetic wave absorption; Infrared spectra; Metals industry; Methanol; Temperature; Wastewater treatment; Water heating;
Conference_Titel :
Bioinformatics and Biomedical Engineering , 2009. ICBBE 2009. 3rd International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-2901-1
Electronic_ISBN :
978-1-4244-2902-8
DOI :
10.1109/ICBBE.2009.5163036