Removal of benzene vapor from the air based on novel tantalum metal-organic framework (Ta-MOF) adsorbent by gas flow solid-phase interaction before determination by gas chromatography

Volume 4, Issue 04, Pages 36-48, Dec 2021 *** Field: Air pollution: Analytical Environmental Chemistry

  • Ali Faghihi-Zarandi, Corresponding Department of Occupational Health and Safety at Work, Kerman University of Medical Sciences, Kerman, Iran
  • Mohammad Reza Rezaei Kahkha Department of Environmental Health Engineering, Faculty of Health, Zabol University of Medical Sciences, Zabol, Iran
  • Mohammad Bagher Aghebatbekheir Department of Occupational Health and Safety at Work, School of Public Health, Kerman University of Medical Sciences, Kerman, Iran
  • Nasser Hasheminejad Department of Occupational Health and Safety at Work, School of Public Health, Kerman University of Medical Sciences, Kerman, Iran
Keywords: Benzene, Adsorption, Gas flow solid-phase interaction, Tantalum metal-organic framework, Gas chromatography


‌Benzene has a carcinogenic effect on the human body and adsorption from the air is the best way to control it. By this research, benzene vapor was removed from the air based on a tantalum metal-organic framework (Ta-MOF) by gas flow solid-phase interaction (GF-SPI). Benzene adsorption with Ta-MOF was studied in the static and dynamic systems at room temperature. The benzene concentration was analyzed by gas chromatography equipped with an FID detector (GC-FID). The factors affecting benzene removal efficiency like initial concentration of benzene, amount of adsorbent, exposure time, flow rate, and temperature were studied and optimized. The results showed us, the adsorption capacities range of Ta-MOF for benzene in the static and dynamic system were obtained between 90-160 mg g-1 and 65-135 mg g-1, respectively. Also, the high removal efficiency was achieved by more than 95% at 45°C, 67.5 mg L-1 benzene concentration, 0.5 g of Ta-MOF, and the flow rate of 250 mL min-1 for a dynamic system. By dynamic system, the benzene is generated in the chamber, stored in a bag, and then moved on the surface of Ta-MOF. The GF-SPI method was validated by GC-MS and spiking real samples.


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How to Cite
Faghihi-Zarandi, A., Rezaei Kahkha, M., Aghebatbekheir, M., & Hasheminejad, N. (2021). Removal of benzene vapor from the air based on novel tantalum metal-organic framework (Ta-MOF) adsorbent by gas flow solid-phase interaction before determination by gas chromatography. Analytical Methods in Environmental Chemistry Journal, 4(04), 36-48.
Original Article