期刊
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
卷 35, 期 2, 页码 193-204出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/01932691.2013.780242
关键词
Azure A; biosorption; FTIR; Zea mays
资金
- Operational Programme Human Resources [BG051PO001/3.3-05-001]
- European Social Fund, the European Union
The mechanism of Azure A (AA) biosorption by Zea mays biomass (ZMB) was studied. Surface chemistry and morphology were characterized by potentiometric titration, pH of zero charge, FTIR, and microscope analysis. The equilibrium data was modeled by Langmuir, Freundlich, Redlich-Peterson, Temkin, and multilayer models. AA biosorption was mainly limited by chemisorption, but the role of intraparticle diffusion could not be neglected. The integrative analysis of surface chemistry/biosorption studies showed that chemisorption, ion exchange, complexation, and/or electrostatic attraction were involved during AA biosorption. The maximum biosorption capacity of ZMB (q 5.84mg/g) was registered at pH7.6.
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