Removal of Dyestuff by Sunflower Husk
The removal of dyes from synthetic wastewater by sunflower husk was studied. The extent of adsorption was studied in batch as a function of burning temperature, adsorbents treated with sodium hydroxide and hydrochloric acid, adsorbents size, pH and solution temperature. Methylene blue and Mexican red in aqueous solution was used as synthetic wastewater. Dynamic removal of methylene blue and Mexican red by sunflower husk was also studied in packed bed column. In batch, both dyes were removed with the maximum adsorption by unburned adsorbents. Removal of methylene blue was increased when the adsorbents treated with NaOH whereas treated with HCl for Mexican red. The optimum pH for removal of methylene blue solution was between 4 and 10 and the maximum value for Mexican red was pH 2. Removal of the dyes were greater with higher solution temperature. The adsorption of methylene blue and Mexican red follows Langmuir adsorption model. In packed bed column, values of column parameter were investigated as a function of flow rate and bed height.Dynamic of adsorption process was modelled by bed depth service time (BDST) and the experimental data were fitted very well to the BDST model.
dyestuff removal/ sunflower husk //adsorption isotherm/ BDST
S. SRISORRACHATR
Department of Chemical Engineering, Faculty of Engineering, Srinakharinwirot University, Nakon Nayok 26120 , Thailand
国际会议
The 12th Asian Pacific Confederation of Chemical Engineering Congress(第十二届亚太化工联盟大会暨化工展览会)
大连
英文
2008-08-04（万方平台首次上网日期，不代表论文的发表时间）