| Title: | Alkylation modified pistachio shell-based biochar to promote the adsorption of VOCs in high humidity environment |
| Author(s): | Cheng T; Li J; Ma X; Zhou L; Wu H; Yang L; |
| Address: | "Key Laboratory of Energy Thermal Conversion and Control, Ministry of Education, School of Energy and Environment, Southeast University, Nanjing, Jiangsu, 210096, People's Republic of China. National-Local Joint Engineering Research Center of Heavy Metals Polluants Control and Resource Utilization, College of Environmental and Chemical Engineering, Nanchang Hangkong University, Jiangxi, 330063, People's Republic of China. School of Energy and Mechanical Engineering, Nanjing Normal University, Nanjing, Jiangsu, 210042, People's Republic of China. Key Laboratory of Energy Thermal Conversion and Control, Ministry of Education, School of Energy and Environment, Southeast University, Nanjing, Jiangsu, 210096, People's Republic of China. Electronic address: ylj@seu.edu.cn" |
| DOI: | 10.1016/j.envpol.2021.118714 |
| ISSN/ISBN: | 1873-6424 (Electronic) 0269-7491 (Linking) |
| Abstract: | "The objective of this work was to evaluate the adsorption capacity of alkylated modified porous biochar prepared by esterification and etherification (PSAC-2) for low concentrate volatile organic compounds (VOCs, toluene and ethyl acetate) in high humidity environment by experiments and theoretical calculations. Results showed that PSAC-2 has a large specific surface area and weak surface polarity, at 80% relative humidity, its capacities for toluene and ethyl acetate adsorption could be maintained at 92% and 87% of the initial capacities (169.9 mg/g and 96.77 mg/g). The adsorption behaviors of toluene, ethyl acetate, and water vapor were studied by adsorption isotherms, and isosteric heat was obtained. The desorption activation energy was obtained by temperature programmed desorption experiment. The outcomes manifested that the PSAC-2 can achieve strong adsorption performance for weakly polar molecules. Through density functional theory (DFT) simulations, owing to the interaction of hydrogen bonds, oxygen-containing groups became a significant factor influencing the adsorption of VOCs in humid environments. These results could provide an important reference for VOCs control in a high humidity environment" |
| Keywords: | Adsorption Alkylation Charcoal Humidity *Pistacia *Volatile Organic Compounds Biochar Ethyl acetate Pistachio shell Toluene Water vapor; |
| Notes: | "MedlineCheng, Tangying Li, Jinjin Ma, Xiuwei Zhou, Lei Wu, Hao Yang, Linjun eng England 2021/12/24 Environ Pollut. 2022 Feb 15; 295:118714. doi: 10.1016/j.envpol.2021.118714. Epub 2021 Dec 20" |
