Abstract:
:In this study, the effect of temperature on the equilibrium biosorption of methyl violet dye from aqueous solution using Mansonia wood sawdust was studied. The equilibrium biosorption data were analyzed using three widely applied isotherm models; Langmuir, Freundlich and Redlich-Peterson isotherm. The fit of three linear Langmuir isotherm forms, the Freundlich isotherm, and the Redlich-Peterson isotherm were determined using linear and the non-linear methods. Langmuir isotherm parameters obtained from the three Langmuir linear equations by using linear method were dissimilar, except, when the non-linear method was used. Best fits were yielded with Langmuir and Redlich-Peterson isotherms. The methyl violet biosorption was strongly dependent solution pH and percentage dye removal became significant above pH 7, which was slightly higher than the pH(PZC) of the sawdust material. In addition, various thermodynamic parameters, such as DeltaG degrees , DeltaH degrees , and DeltaS degrees were calculated. Results suggested that the biosorption was a spontaneous and endothermic process.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Ofomaja AE,Ho YSdoi
10.1016/j.biortech.2007.11.018subject
Has Abstractpub_date
2008-09-01 00:00:00pages
5411-7issue
13eissn
0960-8524issn
1873-2976pii
S0960-8524(07)00952-2journal_volume
99pub_type
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