Page 160 - New Trends in Green Construction

Advanced Construction Materials and Technologies
3. Results and conclusions
Isotherms have been made at 0, 20 and 35 °C for the hydrotalcites, and at 0 and 35 °C for the organohydrotalcites, calcined and without calcining in both cases. All these isotherms have been adjusted to the adsorption models defined by Freundlich, Langmuir, Temkin and Dubinin- Raduskevich.
The study shows that the applied heat treatment, such as the temperature at which the isotherm is made, is an important factor that affect the adsorption processes. The maximum adsorption capacity of the hydrotalcite MgAlCO3-500 °C (synthesized) at a temperature of 0 °C is 140 mg / g. For organohydrotalcites, the maximum adsorption capacity is 170 mg / g, in the case of TDD- 500 °C at a temperature of 0 °C.
4. Acknowledgment
The authors wish to acknowledge the funding of this study to the Junta de Andalucía (Groups FMQ-391 and TEP-227) and to the University of Córdoba for the research plan (2016). D. Suescum Morales wishes to acknowledge the Ministry of Education, Culture and Sports for his Research and Teaching Scholarship (FPU 17/04329). David Cantador Fernández wishes to acknowledge the University of Córdoba for his internship contract (ref. EJI-17-FQM-391) framed in the National Youth Guarantee System (2014-2020 Program) and financed by the European Social Fund.
5. References
IEA. (2017). Global Energy and CO2 Status Report 2017. Global Energy and CO2 Status Report 2017, (March). Retrieved from
https://www.iea.org/publications/freepublications/publication/GECO2017.pdf
Montzka, S. A., Dlugokencky, E. J., & Butler, J. H. (2011). Non-CO 2 greenhouse gases and climate change.
Nature, 476(7358), 43–50. https://doi.org/10.1038/nature10322
160