Record-high capture of volatile benzene and toluene enabled by activator implant-optimized banana peel-derived engineering carbonaceous adsorbents

Environment International

Jiayang Gu¹  Zhen Yang¹  Jianfeng Liu²  Fu Yang³  Rui Ou⁴  Aihua Yuan⁴  Yutong Lu⁴  Xuhua Shen⁴  Xiaocai Hu⁵ 

[1] Corresponding authors at: School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, Jiangsu, China (A. Yuan, F. Yang).;Marine Equipment and Technology Institute, Jiangsu University of Science and Technology, Zhenjiang 212003, China;Marine Equipment and Technology Institute, Jiangsu University of Science and Technology, Zhenjiang 212003, China;School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, Jiangsu, China;Shanghai Waigaoqiao Shipbuilding Co., Ltd, Shanghai 200137, China;

关键词: Carbonaceous absorbent;    VOCs;    Banana peel;    Record-high;    Adsorption selectivity;   

DOI  :  

来源: DOAJ

【 摘 要 】

This work developed a super-high performance of engineering carbonaceous adsorbents from waste banana-peel via an optimized KOH-impregnated approach, which affords outstanding structural property (SBET = 3746.5 m2 g−1, Vtotal = 2.50 cm3 g−1), far outperforming KOH-grinding method-induced counterpart and other known banana peel-derived those. Thereby, this triggers a record-high capture value of volatile organic compounds (VOCs) specific to benzene (27.55 mmol g−1) and toluene (23.82 mmol g−1) in the all known results. The structural expression characters were accurately correlated with excellent adsorption efficiency of VOCs by investigating the synthetic factor-controlling comparative samples. Ulteriorly, the adsorption selectivity prediction at different relative humidity was demonstrated through the DIH (difference of the isosteric heats), highlighting the good superiority in selective adsorption of toluene compared to benzene even under humid atmosphere. Our findings provide the possibility for the practical application and fabrication of waste biomass (banana peel)-derived functional biochar adsorbent in the environmental treatment of threatening VOCs pollutants.

【 授权许可】

Unknown