期刊
MATERIALS
卷 15, 期 11, 页码 -出版社
MDPI
DOI: 10.3390/ma15113746
关键词
rice husk; rice straw; silica; lignocellulose; activated carbon; agriculture waste recycling
类别
资金
- Deputyship for Research and Innovation, Ministry of Education in Saudi Arabia [IFP-KKU-2020/11]
This study focuses on the production of bio-based silica, lignocellulose, and activated carbon from rice biomass waste. The products were characterized using various physical examination techniques and preliminarily used in wastewater treatment and water desalination processes.
Bio-based silica, lignocellulose, and activated carbon were simply produced via the recycling of Hassawi rice biomass waste of Al-Ahsa governorate in the eastern Saudi Arabia region using a fast chemical treatment procedure. Rice husk and rice straw wastes were collected, ground, and chemically treated with sodium hydroxide to extract silica/silicate from the dried plant tissues. The liquid extract is then treated with acid solutions in order to precipitate silica/silicate at neutral medium. Lowering the pH of the supernatant to 2 resulted in the precipitation of lignocellulose. Thermal treatment of the biomass residue under N-2 gas stream resulted in activated carbon production. Separated products were dried/treated and characterized using several physical examination techniques, such as FT-IR, SEM/EDX, XRD, and Raman spectroscopy in order to study their structure and morphology. Silica and lignocelluloses products were then preliminarily used in the treatment of wastewaters and water-desalination processes.
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