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Fabrication of polyacrylonitrile hybrid nanofiber scaffold containing activated carbon by electrospinning process as nanofilter media for SO 2 , CO 2 , and CH 4 adsorption
Author(s) -
Tajer Mahdiyeh,
Anbia Mansoor,
Salehi Samira
Publication year - 2020
Publication title -
environmental progress and sustainable energy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.495
H-Index - 66
eISSN - 1944-7450
pISSN - 1944-7442
DOI - 10.1002/ep.13498
Subject(s) - polyacrylonitrile , electrospinning , nanofiber , adsorption , chemical engineering , materials science , carbon nanofiber , activated carbon , scanning electron microscope , flue gas , nanotechnology , chemistry , polymer , carbon nanotube , composite material , organic chemistry , engineering
Distribution of particulate matter (PM), toxic, and greenhouse gases in the atmosphere are responsible for air pollution, human health issues, and enhanced global warming. Traditional polymeric nanofibers only can remove PMs from air flue. The objective of this study was to investigate the adsorption capacity and selectivity of hybrid nanofibrous filter media based on polyacrylonitrile (PAN) with different percentages of activated carbon particles such as gas adsorbent for removal of sulfur dioxide (SO 2 ), carbon dioxide (CO 2 ), and methane (CH 4 ) from gaseous streams The adsorption isotherms of SO 2 , CO 2 , and CH 4 on the hybrid samples were measured at 298, 323, and 348 K and with a pressure range of 0–21 bar by means of the volumetric adsorption method. Uniform PAN nanofiber filter (PANNF) with an average diameter of 273 nm was achieved via the electrospinning process after the optimization of different parameters. Waste tea‐derived activated carbons (ACs) by using phosphoric acid as the activation agent was synthesized through two different methods, chemical activation to obtain the micro size of AC (MAC), and microwave radiation energy to obtain nano size of AC (NAC). Hybrid nanofibers were functionalized with dispersing homogenous solutions containing AC particles by the electrospray process. The effect of high and low loading of NAC and MAC on the PANNF surface was studied to increase our understanding about gas adsorption properties of prepare samples. The samples were characterized by Image analysis (ImageJ), Statistical package for social science (SPSS), Scanning electron microscopy (SEM), X‐ray diffraction (XRD), Fourier transform infrared (FT‐IR), Energy‐Dispersive x‐ray (EDX), and Nitrogen adsorption/desorption isotherms.