Title:
Sol-gel Coupling Adsorption Method for Extraction of High Purity Silica from Sugarcane Bagasse Ash for Solar Cell Application
Author(s):
Farirai, F., Mupa, M., Shonhiwa, C., Daramola, M.O.
Document(s):
Paper
Poster
Abstract:
Ultra-pure silicon is required in the development of solar cells for solar power application. But, the current method of producing the ultra-pure silicon is energy-inefficient and cost-intensive, making solar energy very unaffordable for many. However, the use of cheap silica source to produce silicon especially the use of biomass waste(e.g. sugarcane bagasse ash) could pave the way for developing a cost-effective protocol to produce ultra-pure siliconand thus makes solar energy affordable by many, thereby making realization of sustainable development goal (No. 7) achievable. In most tropical countries where sugarcane is grown at commercial scale, there are substantial quantities of bagasse ash-rich in amorphous silica. A simple low-cost chemical method for the extraction of pure silica from the ash is of importance since the conventional method to produce pure silica requires high energy, and this could be instrumental to developing a cost-effective protocol to producing ultra-pure silicon. In this study sol gel coupled with adsorption, using an activated carbon was used to extract high purity silica from sugarcane bagasse ash. Physico-chemical characteristics of the extracted silica samples were characterized using XRF, XRD and SEM.
Keywords:
activated carbon, bioethanol, sugar cane, characterization, sugar cane bagasse ash
Topic:
Biomass Conversion Technologies for Energy Carriers, Chemicals and Materials
Subtopic:
Production and application of biobased chemicals
Event:
27th European Biomass Conference and Exhibition
Session:
3DV.4.17
Pages:
1436 - 1438
ISBN:
978-88-89407-19-6
Paper DOI:
10.5071/27thEUBCE2019-3DV.4.17
Price:
FREE
