The Adsorption of methylene blue from aqueous solution using waste aquacultural shell powders

in Domestic Journal (external review journal), 國內期刊(外審期刊)
標題The Adsorption of methylene blue from aqueous solution using waste aquacultural shell powders
出版類型國內期刊(外審期刊)
出版年度2009
AuthorsWen-Tien Tsai, 蔡文田
開始頁166
頁數6
出版日期2009 / 6
其他編號0000
中文摘要

Shellfish shell has become one of the most significant wastes in aquaculture. In this work, three ground shells derived from oyster, hard clam and short-neck clam were used as mineral adsorbents for removal of cationic dye (i.e., methylene blue) from aq. soln. at 25 C and initial soln. pH of 7.0. The shell adsorbents possessed mesoporous structure according to their type IV isotherms with the hysteresis loops corresponding to type H3, but they displayed poor pore properties. The equil. adsorption capacity of methylene blue onto the oyster shell is significantly larger than those onto the hard clam and short-neck clam shells, which are parallel to their pore properties. It was further found that both of the Langmuir and Freundlich models were useful for describing the equil. of adsorption system. The adsorption kinetics showed that the adsorption process can be well described with a simple model, the pseudo-second order model. The parameters (amt. of dye adsorbed at equil.) of the model obtained in the present work were significantly in line with the adsorption process parameter (i.e., initial dye concn.).

期刊名稱Journal of Environmental Engineering and Management
校址:912 屏東縣內埔鄉學府路1號 總機:886-8-7703202 傳真:886-8-7740165 系統開發統維護單位:國立屏東科技大學 電算中心 版權所有