Title:
Potential Use of Bottom Ashes from Non-woody Biomass Combustion as Sustainable Supplementary Cementitious Material: Effect of the Combustion Temperature
Author(s):
Dwi Putra, R., Beidaghy Dizaji, H., Kulshresth, D., Zeng, T., Overmann, S., Vollpracht, A.
Document(s):
Paper
Abstract:
The concrete production is an energy and resource-intensive industry which contributes to 7 % of the global carbon dioxide emission. Therefore, a crucial decarbonization option for the cement industry is to substitute the clinker by so-called supplementary cementitious materials (SCMs). Due to its properties and availability, the bottom ash from the biomass combustion process can be suitable as SCM. Several agricultural residues were collected and analysed. The materials were applied for combustion experiments in a lab-scale muffle furnace which was operated at different temperatures. The chemical composition of the ash was characterized. Moreover, the specific surface area and the reactivity of the produced ash were determined. In result, the spelt husk ash is the most promising SCM, with its high content of silica and high reactivity. Moreover, the reactivity of the ash reduces with increasing combustion temperature probably due to the formation of crystalline structure. The addition of kaolinite is proven to maintain the reactivity of the ash produced high combustion temperatures.
Keywords:
agricultural residues, biomass, combustion, ashes, supplementary cementitious material
Topic:
Biomass Conversion for Bioenergy
Subtopic:
Advanced biomass combustion
Event:
31st European Biomass Conference and Exhibition
Session:
4CO.3.4
Pages:
635 - 640
ISBN:
978-88-89407-23-3
Paper DOI:
10.5071/31stEUBCE2023-4CO.3.4
Price:
FREE
