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Engineering Adsorption Case for Efficient Capture of VOCs Using Biomass‐based Corncobs via a Carbonized Strategy
Author(s) -
Shen Xuhua,
Ou Rui,
Lu Yutong,
Yuan Aihua,
Liu Jianfeng,
Hu Xiaocai,
Yang Zhen,
Yang Fu
Publication year - 2020
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.202002086
Subject(s) - adsorption , toluene , benzene , chemistry , activated carbon , carbonization , corncob , biomass (ecology) , carbon fibers , chemical engineering , environmental chemistry , organic chemistry , nuclear chemistry , materials science , raw material , engineering , oceanography , composite number , composite material , geology
Herein, we report excellent corncobs‐derived carbon adsorbent by the special KOH chemical activation method which specific to selective adsorption removal of volatile organic chemicals (VOCs) under humid conditions. The obtained corncobs‐derived carbon adsorbent affords the enhanced adsorption removal capacities for volatile benzene (851.3 mg g ‐1 ) and toluene (854.9 mg g ‐1 ), outperforming comparative that derived from KOH grind means, which are 3 times higher than those of commercial activated‐carbon (benzene 275 mg g ‐1 , toluene 310.5 mg g ‐1 ). We also demonstrated that the optimized structural property of the fabricated adsorbent had a good correlation with the adsorption efficiency of VOCs. Besides, the adsorption selectivity of benzene and toluene under different relative humidity distinguished by DIH (Difference of the Isosteric Heat) equation further indicates the beforehand adsorption behavior of toluene on the corncobs‐derived carbon adsorbent compared to benzene, which should be benefited from the improved synthetic tactics. Our study provides a real possibility for the practical engineering application of waste biomass (corncobs)‐derived engineering carbonaceous adsorbent in VOCs pollution control.