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Bioresour Technol

Title:		Facile synthesis of porous carbons from silica-rich rice husk char for volatile organic compounds (VOCs) sorption
Author(s):		Shen Y; Zhang N;
Address:		"School of Environmental Science and Engineering, Nanjing University of Information Science and Technology (NUIST), Nanjing 210044, China; Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC), Nanjing University of Information Science and Technology (NUIST), Nanjing 210044, China. Electronic address: shen1225@nuist.edu.cn. School of Environmental Science and Engineering, Nanjing University of Information Science and Technology (NUIST), Nanjing 210044, China"
Journal Title:		Bioresour Technol
Year:		2019
Volume:		20190307
Issue:
Page Number:		294 - 300
DOI:		10.1016/j.biortech.2019.03.025
ISSN/ISBN:		1873-2976 (Electronic) 0960-8524 (Linking)
Abstract:		"This work reported a facile synthesis of porous carbons from the silica-rich rice husk biochar via a ball-milling-assisted KOH activation for sorption of tar compounds and volatile organic compounds (VOCs) (i.e., toluene, phenol). The textural properties of activated biochars can be greatly influenced by the mass ratio of KOH and biochar. The high-performance biochar with a large specific surface area (S(BET): 1818?ª+m(2)/g) was produced as the mass ratio was 3. This activated biochar exhibited a hierarchically meso-microporous structure, which benefited for the adsorption process. Particularly, it had long breakthrough time of 2784?ª+min and high adsorption capacity of 264?ª+mg/g for toluene, while it had short breakthrough time of 724?ª+min and low adsorption capacity of 6.53?ª+mg/g for phenol. Significantly, the mixed VOCs of toluene and phenol can be effectively adsorbed. Further, thermal desorption will be an alternative route for regeneration of waste activated biochar"
Keywords:		Adsorption Carbon/*chemistry Charcoal/*chemistry Oryza/*chemistry Phenol/*chemistry Porosity Silicon Dioxide/*chemistry Toluene/*chemistry Volatile Organic Compounds/*chemistry Porous carbon Rice husk char Self-templated activation Sorption Tar VOCs;
Notes:		"MedlineShen, Yafei Zhang, Niyu eng England 2019/03/16 Bioresour Technol. 2019 Jun; 282:294-300. doi: 10.1016/j.biortech.2019.03.025. Epub 2019 Mar 7"