TY - JOUR
T1 - Removal of a mixture of formaldehyde and methanol vapors in biotrickling filters under mesophilic and thermophilic conditions
T2 - Potential application in ethanol production
AU - Al-Faliti, Mitham
AU - Dvorak, Bruce
AU - Aly Hassan, Ashraf
N1 - Funding Information:
This work was supported by the Nebraska Center for Energy Sciences Research, University of Nebraska-Lincoln [Cycle 13]. This work was supported by the Nebraska Center for Energy Sciences Research (NCESR), Cycle 13.
Funding Information:
This work was supported by the Nebraska Center for Energy Sciences Research (NCESR), Cycle 13.
PY - 2022
Y1 - 2022
N2 - Ethanol is a significant source of energy as a biofuel, however, its production using corn involves the generation of harmful emissions from both fermentation tanks and dryers. Scrubbers control the emissions from fermentation tanks, while the emissions from the dryers are controlled by regenerative thermal oxidizers. Potential alternatives to these energy- and water-intensive technologies are biotrickling filters (BTF). Two BTF were operated in parallel to treat formaldehyde and methanol emissions in a volumetric ratio of 4:1, one at 25°C (mesophilic), and the other at 60°C (thermophilic). The mesophilic BTF simulated emissions from fermentation tanks, while the thermophilic BTF simulated emissions from dryers. Both beds were operated at an empty bed residence time of 30s and influent formaldehyde concentrations of 20, 50, and 100 ppm/volume (ppmv). BTF have removed formaldehyde at typical ethanol plants emissions ~21 ppmv. The BTF technology have the potential in replacing the conventional air treatment methods used at ethanol plants.
AB - Ethanol is a significant source of energy as a biofuel, however, its production using corn involves the generation of harmful emissions from both fermentation tanks and dryers. Scrubbers control the emissions from fermentation tanks, while the emissions from the dryers are controlled by regenerative thermal oxidizers. Potential alternatives to these energy- and water-intensive technologies are biotrickling filters (BTF). Two BTF were operated in parallel to treat formaldehyde and methanol emissions in a volumetric ratio of 4:1, one at 25°C (mesophilic), and the other at 60°C (thermophilic). The mesophilic BTF simulated emissions from fermentation tanks, while the thermophilic BTF simulated emissions from dryers. Both beds were operated at an empty bed residence time of 30s and influent formaldehyde concentrations of 20, 50, and 100 ppm/volume (ppmv). BTF have removed formaldehyde at typical ethanol plants emissions ~21 ppmv. The BTF technology have the potential in replacing the conventional air treatment methods used at ethanol plants.
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U2 - 10.1080/10962247.2022.2056262
DO - 10.1080/10962247.2022.2056262
M3 - Article
C2 - 35311619
AN - SCOPUS:85129327728
SN - 1096-2247
VL - 72
SP - 602
EP - 616
JO - Journal of the Air and Waste Management Association
JF - Journal of the Air and Waste Management Association
IS - 6
ER -