Adsorption properties of new activity rice hull ash pretreated by white-rot fungi for adsorption oil bleaching process

Author

Zhao, Yuping

Author_Institution

Sch. of Life Sci. & Chem. Eng., Huaiyin Inst. of Technol., Huai´´an, China

fYear

2011

fDate

24-26 June 2011

Firstpage

6608

Lastpage

6611

Abstract

Adsorption properties of new rice hull ash (RHA) pretreated by white-rot fungi for oil bleaching process were researched in this paper. The results showed that the adsorption capacity and rate of new RHA were better than that of normal RHA, and the adsorption characteristic conformed to the Freundlich thermodynamic isotherms. The variations of adsorption enthalpy, the Gibbs free energy and the entropy could be calculated according to the thermodynamic function. The results showed that the adsorption was an exothermic process which was both monolayer adsorption but also the multi-molecular layer adsorption with the coexistence of physical and chemical adsorption. Temperature elevation and adsorbent dosage increase could promote adsorption.

Keywords

adsorption; ash; biotechnology; bleaching (materials processing); crops; enthalpy; free energy; microorganisms; Freundlich thermodynamic isotherms; Gibbs free energy; RHA; activity rice hull ash; adsorbent dosage increase; adsorption capacity; adsorption characteristic; adsorption enthalpy; adsorption oil bleaching process; adsorption property; chemical adsorption; entropy; exothermic process; monolayer adsorption; multimolecular layer adsorption; physical adsorption; temperature elevation; thermodynamic function; white-rot fungi pretreatment; Ash; Bleaching; Carbon; Fungi; Silicon compounds; Thermodynamics; adsorption; rice hull; rice hull ash; thermodynamics;

fLanguage

English

Publisher

ieee

Conference_Titel

Remote Sensing, Environment and Transportation Engineering (RSETE), 2011 International Conference on

Conference_Location

Nanjing

Print_ISBN

978-1-4244-9172-8

Type

conf

DOI

10.1109/RSETE.2011.5965873

Filename

5965873