| Issue |
E3S Web Conf.
Volume 22, 2017
International Conference on Advances in Energy Systems and Environmental Engineering (ASEE17)
|
|
|---|---|---|
| Article Number | 00031 | |
| Number of page(s) | 9 | |
| DOI | https://doi.org/10.1051/e3sconf/20172200031 | |
| Published online | 07 November 2017 | |
Power plant wastes capitalization as geopolymeric building materials
“Gheorghe Asachi” Technical University of Iasi, Faculty of Chemical Engineering and Environmental Protection, Prof. dr. doc. D. Mangeron Street no. 73, 700050, Iasi
* Corresponding author: maria_harja06@yahoo.com
In this innovative study, we are present an investigation over the properties of geopolymeric materials prepared using ash supplied by power plant Iasi, Romania and sodium hydroxide solutions/pellets. Having as objective a minimum consumption of energy and materials was developed a class of advanced eco-materials. New synthesized materials can be used as a binder for cement replacement or for the removal/immobilization of pollutants from waste waters or soils. It offers an advanced and low cost-effective solution too many problems, where waste must be capitalized. The geopolymer formation, by hydrothermal method, is influenced by: temperature (20–600°C), alkali concentration (2M-6M), solid /liquid ratio (1-2), ash composition, time of heating (2–48 h), etc. The behaviour of the FTIR peak of 6M sample indicated upper quantity of geopolymer formation at the first stage of the reaction. XRD spectra indicated phases like sodalite, faujasite, Na-Y, which are known phases of geopolymer/zeolite. Advanced destroyed of ash particles due to geopolymerisation reaction were observed when the temperature was higher. At the constant temperature the percentage of geopolymer increases with increasing of curing time, from 4–48 h. Geopolymer materials are environmentally friendly, for its obtaining energy consumption, and CO2 emission is reduced compared to cement binder.
© The Authors, published by EDP Sciences, 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
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