Parallelly Aligned, Activated Carbon Coated Plates Operating as Adsorption Columns for Removing VOCs

• Published in: Aerosol and Air Quality Research Vol. 22; no. 3; pp. 1 - 13
• Main Authors: Bae, Jiyeol, Kim, Suho, Baek, Soyoung
• Format: Journal Article
• Language: English
• Published: Taoyuan City 社團法人台灣氣膠研究學會 01.03.2022; Taiwan Association of Aerosol Research
• Subjects: Acetic acid; Activated carbon; Adsorbents; Adsorption; Air pollution; Benzene; Coatings; Ethyl benzene; Ethylbenzene; Fluid dynamics; Fluid flow; Hydrocarbons; Hydrophobicity; Molecular weight; Organic compounds; Permeability; Polyvinyl alcohol; Reactors; Stainless steel; Stainless steels; Steel plates; Toluene; VOCs; Volatile organic compounds; Xylene; Immobilization of powder type adsorbent; Adsorption and desorption; van der Waals force; Activate carbon coated plate (ACP); BTEX mixed gases adsorption
• ISSN: 1680-8584; 2071-1409
• DOI: 10.4209/aaqr.210263

A semi-pilot-scale adsorption reactor was fabricated to remove a volatile organic compound (VOC) gases mixture (BTEX). Activated carbon (AC) was immobilized by coating it on stainless steel plates using a polyvinyl acetate (PVA) binder, and the open-pore structure was maintained after the coating process. Parallelly aligned plates coated with AC minimized the decrease in pressure by inducing smooth fluid flow and maintained a high removal efficiency even at a high linear velocity. The order of the capacities for adsorption was: xylene ＞ ethyl benzene ＞ toluene ＞ benzene, which was due to their differences in hydrophobicity and molecular weight. The adsorption-desorption process was performed for five successive cycles. The efficiency of removal was evidently the same for all cycles, which makes this reactor a sustainable one.