Proceedings of the 2017 6th International Conference on Measurement, Instrumentation and Automation (ICMIA 2017)

Adsorption characteristics of gallic acid on fresh calcium phosphate in sucrose solution

Authors
Yu-Hong Tian, Xiang-Li Xu, Shang-Guang Wu, Qi-Qiu Wei, Hao Cheng
Corresponding Author
Yu-Hong Tian
Available Online June 2017.
DOI
https://doi.org/10.2991/icmia-17.2017.19How to use a DOI?
Keywords
fresh calcium phosphate; gallic acid; adsorption kinetics; adsorption isotherm.
Abstract
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.
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This is an open access article distributed under the CC BY-NC license.

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Proceedings
Part of series
Advances in Intelligent Systems Research
Publication Date
June 2017
ISBN
978-94-6252-387-6
ISSN
1951-6851
DOI
https://doi.org/10.2991/icmia-17.2017.19How to use a DOI?
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
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  -