Adsorption characteristics of gallic acid on fresh calcium phosphate in sucrose solution
Yu-Hong Tian, Xiang-Li Xu, Shang-Guang Wu, Qi-Qiu Wei, Hao Cheng
Available Online June 2017.
- https://doi.org/10.2991/icmia-17.2017.19How to use a DOI?
- fresh calcium phosphate; gallic acid; adsorption kinetics; adsorption isotherm.
- The adsorption characteristics of gallic acid on fresh calcium phosphate in sucrose solution were discussed. Three kinetic models, including pseudo-first-order model, pseudo-second-order model and intraparticle diffusion model, were selected to follow the adsorption processes. The results which adsorption reaction occurred in 10% sucrose solution showed that the pseudo-second-order equation provided the best correlation to the experimental data (R2=0.9908~0.9964). Under the initial gallic acid concentration were 25, 50, 75 mg-L-1 in the 10.0% sucrose solution, the adsorption rate of gallic acid on fresh calcium phosphate were 0.0614, 0.0368, 0.0149 g-mg-1-min-1, respectively. Adsorption isotherms curves of gallic acid from different concentrations of sucrose solution on fresh calcium phosphate all conforms to the Langmuir model (R2=0.9919~0.9965). The sucrose solution concentration had effect on the saturated adsorption capacity of gallic acid. The maximum adsorption capacity of gallic acid were 8.4317, 8.0906, 7.7160, 7.3964, 7.0872, 7.0771 mg-g-1 as sucrose concentrations were 0.0%, 0.1%, 0.5%, 1.0%, 5.0% and 10.0%, respectively.
- Open Access
- This is an open access article distributed under the CC BY-NC license.
Cite this article
TY - CONF AU - Yu-Hong Tian AU - Xiang-Li Xu AU - Shang-Guang Wu AU - Qi-Qiu Wei AU - Hao Cheng PY - 2017/06 DA - 2017/06 TI - Adsorption characteristics of gallic acid on fresh calcium phosphate in sucrose solution BT - 2017 6th International Conference on Measurement, Instrumentation and Automation (ICMIA 2017) PB - Atlantis Press SP - 104 EP - 112 SN - 1951-6851 UR - https://doi.org/10.2991/icmia-17.2017.19 DO - https://doi.org/10.2991/icmia-17.2017.19 ID - Tian2017/06 ER -