ADSORPTION AND DESORPTION PERFORMANCE OF HONEYCOMB ACTIVATED CARBON AND ZEOLITE MOLECULAR SIEVE FOR VOCs EXHAUST GAS FROM COATING

FEI Bo; ZHANG Gangfeng; BU Mengya; LI Xiangdong

doi:10.13205/j.hjgc.202303012

Volume 41 Issue 3

Mar. 2023

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FEI Bo, ZHANG Gangfeng, BU Mengya, LI Xiangdong. ADSORPTION AND DESORPTION PERFORMANCE OF HONEYCOMB ACTIVATED CARBON AND ZEOLITE MOLECULAR SIEVE FOR VOCs EXHAUST GAS FROM COATING[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(3): 90-96. doi: 10.13205/j.hjgc.202303012

Citation:

FEI Bo, ZHANG Gangfeng, BU Mengya, LI Xiangdong. ADSORPTION AND DESORPTION PERFORMANCE OF HONEYCOMB ACTIVATED CARBON AND ZEOLITE MOLECULAR SIEVE FOR VOCs EXHAUST GAS FROM COATING[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(3): 90-96. doi: 10.13205/j.hjgc.202303012

Citation:

FEI Bo, ZHANG Gangfeng, BU Mengya, LI Xiangdong. ADSORPTION AND DESORPTION PERFORMANCE OF HONEYCOMB ACTIVATED CARBON AND ZEOLITE MOLECULAR SIEVE FOR VOCs EXHAUST GAS FROM COATING[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(3): 90-96. doi: 10.13205/j.hjgc.202303012

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ADSORPTION AND DESORPTION PERFORMANCE OF HONEYCOMB ACTIVATED CARBON AND ZEOLITE MOLECULAR SIEVE FOR VOCs EXHAUST GAS FROM COATING

doi: 10.13205/j.hjgc.202303012

1. Shanghai Academy of Environmental Sciences, Shanghai 200233, China;
2. School of Environmental Science and Spatial Informatics, China University of Mining and Technology, Xuzhou 221116, China

Received Date: 2021-09-09
Available Online: 2023-05-26
Publish Date: 2023-03-01

Abstract

Abstract

Industrial coating volatile organic compounds (VOCs) exhaust gas was selected as the test object, and a fixed-bed pilot plant was designed to conduct VOCs adsorption and desorption tests with the honeycomb activated carbon and zeolite molecular sieve as adsorbents. The results showed that the iodine value, specific surface area, total pore volume and micropore volume of honeycomb activated carbon were larger than those of zeolite molecular sieve, which were 1.79, 2.93, 1.55 and 2.02 times those of zeolite molecular sieve, respectively; under the same desorption temperature and inlet air speed, VOCs were easier to desorb from the surface of honeycomb activated carbon, and the desorption time was much shorter than that of zeolite molecular sieve; under the same reaction conditions, the saturation adsorption capacity of honeycomb activated carbon for VOCs was significantly higher than that of zeolite molecular sieve. Under the same reaction conditions, the saturation adsorption amount of VOCs on honeycomb activated carbon was significantly higher than that on zeolite molecular sieve, but the saturation adsorption amount of zeolite molecular sieve was less affected by the reaction temperature and VOCs concentration; after 10 cycles of adsorption and desorption, the adsorption rate of VOCs on honeycomb activated carbon and zeolite molecular sieve decreased to 71.35% and 81.15% of that of the first time, respectively, and the adsorption and desorption performance of zeolite molecular sieve was more stable. The adsorption and desorption performance of zeolite molecular sieve was more stable. The saturation adsorption capacity of honeycomb activated carbon was large and the desorption time was fast, which was suitable for treating wide load, low air volume and medium to high concentration of VOCs waste gas; zeolite molecular sieve had better aerodynamic and cyclic adsorption and desorption performance, suitable for treating low to medium concentration of VOCs waste gas with a relatively higher initial temperature.
- honeycomb activated carbon,
- zeolite molecular sieve,
- VOCs,
- adsorption,
- desorption

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References(37)

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