Effect of temperatures and pH on Methyl violet biosorption by mansonia wood sawdust

ASIA unversity > 醫學暨健康學院 > 生物科技學系 > 期刊論文 > Item 310904400/6177

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题名:	Effect of temperatures and pH on Methyl violet biosorption by mansonia wood sawdust
作者:	Ofomaja, A.E.;Ho, Y.S.
贡献者:	Department of Biotechnology
关键词:	Adsorption;Methyl violet;Langmuir isotherm forms;Temperature;Mansonia wood sawdust
日期:	2008
上传时间:	2009-12-15 05:24:29 (UTC+0)
出版者:	Asia University
摘要:	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 pHPZC of the sawdust material. In addition, various thermodynamic parameters, such as DG , DH , and DS were calculated. Results suggested that the biosorption was a spontaneous and endothermic process.
關聯:	Bioresource Technology 99(13): 5411-5417
显示于类别:	[生物科技學系] 期刊論文

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