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Bioaugmented methanol production using ammonia oxidizing bacteria in a continuous flow process

Organic compounds such as methanol are widely used for enhancing denitrification at wastewater treatment plants (WWTPs) to meet effluent water quality permits. On the other hand, methane, which is the main feedstock for industrial methanol production, is also generated during anaerobic digestion in...

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Autores principales: Su, Yu-Chen, Sathyamoorthy, Sandeep, Chandran, Kartik
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier Applied Science ;, Elsevier Science Pub. Co 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6395879/
https://www.ncbi.nlm.nih.gov/pubmed/30711750
http://dx.doi.org/10.1016/j.biortech.2019.01.092
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author Su, Yu-Chen
Sathyamoorthy, Sandeep
Chandran, Kartik
author_facet Su, Yu-Chen
Sathyamoorthy, Sandeep
Chandran, Kartik
author_sort Su, Yu-Chen
collection PubMed
description Organic compounds such as methanol are widely used for enhancing denitrification at wastewater treatment plants (WWTPs) to meet effluent water quality permits. On the other hand, methane, which is the main feedstock for industrial methanol production, is also generated during anaerobic digestion in WWTPs, but is often flared to mitigate its greenhouse impacts. The overarching goal herein was to develop a novel continuous process for methanol production from methane using nitrifying activated sludge. The maximum AOB specific methanol production rate using hydroxylamine as electron donor was 1.61 ± 0.15 and 1.27 ± 0.15 mg-COD-CH3OH/(mg-COD-AOB*d), for hydraulic retention times (HRTs) of 7.5 h and 2 h, respectively. The corresponding production rate using ammonia as electron donor was 0.31 ± 0.08 mg-COD-CH3OH/(mg-COD-AOB*d) at a HRT of 2 h. These results show that nitrifier-mediated methanol production in a continuous-flow system can enhance the efficiency of WWTPs through internal production of biomethanol for denitrification, while simultaneously minimizing wasteful biogas flaring.
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spelling pubmed-63958792019-05-01 Bioaugmented methanol production using ammonia oxidizing bacteria in a continuous flow process Su, Yu-Chen Sathyamoorthy, Sandeep Chandran, Kartik Bioresour Technol Article Organic compounds such as methanol are widely used for enhancing denitrification at wastewater treatment plants (WWTPs) to meet effluent water quality permits. On the other hand, methane, which is the main feedstock for industrial methanol production, is also generated during anaerobic digestion in WWTPs, but is often flared to mitigate its greenhouse impacts. The overarching goal herein was to develop a novel continuous process for methanol production from methane using nitrifying activated sludge. The maximum AOB specific methanol production rate using hydroxylamine as electron donor was 1.61 ± 0.15 and 1.27 ± 0.15 mg-COD-CH3OH/(mg-COD-AOB*d), for hydraulic retention times (HRTs) of 7.5 h and 2 h, respectively. The corresponding production rate using ammonia as electron donor was 0.31 ± 0.08 mg-COD-CH3OH/(mg-COD-AOB*d) at a HRT of 2 h. These results show that nitrifier-mediated methanol production in a continuous-flow system can enhance the efficiency of WWTPs through internal production of biomethanol for denitrification, while simultaneously minimizing wasteful biogas flaring. Elsevier Applied Science ;, Elsevier Science Pub. Co 2019-05 /pmc/articles/PMC6395879/ /pubmed/30711750 http://dx.doi.org/10.1016/j.biortech.2019.01.092 Text en © 2019 The Authors http://creativecommons.org/licenses/by/4.0/ This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Su, Yu-Chen
Sathyamoorthy, Sandeep
Chandran, Kartik
Bioaugmented methanol production using ammonia oxidizing bacteria in a continuous flow process
title Bioaugmented methanol production using ammonia oxidizing bacteria in a continuous flow process
title_full Bioaugmented methanol production using ammonia oxidizing bacteria in a continuous flow process
title_fullStr Bioaugmented methanol production using ammonia oxidizing bacteria in a continuous flow process
title_full_unstemmed Bioaugmented methanol production using ammonia oxidizing bacteria in a continuous flow process
title_short Bioaugmented methanol production using ammonia oxidizing bacteria in a continuous flow process
title_sort bioaugmented methanol production using ammonia oxidizing bacteria in a continuous flow process
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6395879/
https://www.ncbi.nlm.nih.gov/pubmed/30711750
http://dx.doi.org/10.1016/j.biortech.2019.01.092
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