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沙特阿拉伯东部稻壳和稻草农业废弃物的价值提升：生物基二氧化硅、木质纤维素和活性炭的生产

Valorization of Rice Husk and Straw Agriculture Wastes of Eastern Saudi Arabia: Production of Bio-Based Silica, Lignocellulose, and Activated Carbon.

作者信息

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

机构信息

Department of Chemistry, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia.

Department of Biology, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia.

出版信息

Materials (Basel). 2022 May 24;15(11):3746. doi: 10.3390/ma15113746.

DOI:10.3390/ma15113746
PMID:35683045
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9180962/
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 N 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.

摘要

通过使用快速化学处理程序回收沙特阿拉伯东部地区哈萨维省的哈萨维水稻生物质废料，简单地制备了生物基二氧化硅、木质纤维素和活性炭。收集稻壳和稻草废料，研磨后用氢氧化钠进行化学处理，以从干燥的植物组织中提取二氧化硅/硅酸盐。然后用酸溶液处理液体提取物，以便在中性介质中沉淀二氧化硅/硅酸盐。将上清液的pH值降至2会导致木质纤维素沉淀。在氮气流下对生物质残渣进行热处理可生产活性炭。使用傅里叶变换红外光谱（FT-IR）、扫描电子显微镜/能谱仪（SEM/EDX）、X射线衍射仪（XRD）和拉曼光谱等多种物理检测技术对分离出的产物进行干燥/处理和表征，以研究其结构和形态。然后将二氧化硅和木质纤维素产物初步用于废水处理和海水淡化过程。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0b71/9180962/319373f49c7f/materials-15-03746-sch001.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0b71/9180962/319373f49c7f/materials-15-03746-sch001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0b71/9180962/23f3364b4288/materials-15-03746-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0b71/9180962/23b2641a429b/materials-15-03746-g002a.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0b71/9180962/319373f49c7f/materials-15-03746-sch001.jpg

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