An Investigation of the Biosorption of Radioactive Gallium-67 in an Aqueous Solution Using Rose Residue
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- 作者：Hayrettin Eroglu ; Sinan Yapici ; Erhan Varoglu
- 刊名：Journal of Chemical & Engineering Data
- 出版年：2010
- 出版时间：August 12, 2010
- 年：2010
- 卷：55
- 期：8
- 页码：2848-2856
- 全文大小：366K
- 年卷期：v.55,no.8(August 12, 2010)
- ISSN：1520-5134
文摘
This study investigates the adsorption of gallium-67, routinely used in nuclear medicine laboratories, in aqueous solution by using the waste of a rose-oil processing factory (rose residue). The experimental parameters were determined to be as follows: temperature, (10.0 to 40.0) °C; pH, (2.0 to 10.0); stirring speed, (300 to 720) rpm; particle size, (0.15 to 1.40) mm; and adsorbent dose, (1.0 to 15.0) g·L−1. It was seen that the most important parameters were pH, temperature, particle size, and adsorbent dose. The adsorption mechanism of the rose residue was examined by comparing the Fourier transform infrared (FTIR) spectra before and after adsorption. The ΔG and ΔH values were determined, and it was concluded that the absorption was endothermic and spontaneous. Absorption kinetics was studied, and it was observed that they fit a pseudo second-order model. As a result, it was found that the rose residue was a perfect absorbent for the adsorption of gallium-67.