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- Title
Valorization of Rice Husk and Straw Agriculture Wastes of Eastern Saudi Arabia: Production of Bio-Based Silica, Lignocellulose, and Activated Carbon.
- Authors
Abd-Rabboh, Hisham S. M.; Fawy, Khaled F.; Hamdy, Mohamed S.; Elbehairi, SeragEldin I.; Shati, Ali A.; Alfaifi, Mohammad Y.; Ibrahium, Hala A.; Alamri, Saad; Awwad, Nasser S.
- Abstract
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 N2 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.
- Subjects
SAUDI Arabia; RICE hulls; RICE straw; ACTIVATED carbon; LIGNOCELLULOSE; SILICA; AGRICULTURE
- Publication
Materials (1996-1944), 2022, Vol 15, Issue 11, p3746
- ISSN
1996-1944
- Publication type
Article
- DOI
10.3390/ma15113746