Utilization of ground eggshell waste as an adsorbent for the removal of dyes from aqueous solution

in Sciences Citation Index(SCI), 科學引文索引資料庫(SCI)
標題Utilization of ground eggshell waste as an adsorbent for the removal of dyes from aqueous solution
出版類型SCI(Sciences Citation Index)
出版年度2008
AuthorsWen-Tien Tsai, 蔡文田
開始頁1623
頁數6
出版日期2008 / 4
其他編號0000
中文摘要

The adsorption of cationic basic blue 9 and anionic acid orange 51 from aqueous solution onto the calcified eggshell (ES) and its
ground eggshell powder (ESP) was carried out by varying the process parameters such as agitation speed, initial dye concentration,adsorbent mass and temperature. The adsorption potential for basic blue 9 onto ESP is far lower than that for acid orange 51, mainly due to the ionic interaction between the acid dye with the sulfonate groups and the positively charged sites on the surface of ESP. The
adsorption capacity of acid orange 51 onto ES is significantly smaller than that onto ESP, which is in line with their pore properties (i.e.,1 vs. 21 m2/g). The experimental results showed that the adsorption process can be well described with a simple model, the pseudosecond-order model. According to the equilibrium adsorption capacity from the fitting of pseudo-second order reaction model, it was
further found that the Freundlich model yields a somewhat better fit than the Langmuir model in the adsorption of acid orange 51 onto ESP. In addition, an increase in adsorption temperature from 15 to 45 C significantly enhances the adsorption capacity of acid orange 51 onto ESP, revealing that the adsorption should be an endothermic or chemisorption process. From the results, it is feasible to utilize the ground eggshell waste as an effective adsorbent for removal of anionic dye from aqueous solution.

期刊名稱Bioresource Technology
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