Potential of food waste-derived volatile fatty acids as alternative carbon source for denitrifying moving bed biofilm reactors

Tugba Sapmaz; Reza Manafi; Amir Mahboubi; Dag Lorick; Derya Y. Koseoglu-Imer; Mohammad J. Taherzadeh

doi:10.1016/j.biortech.2022.128046

Potential of food waste-derived volatile fatty acids as alternative carbon source for denitrifying moving bed biofilm reactors

Tugba Sapmaz^*, Reza Manafi, Amir Mahboubi, Dag Lorick, Derya Y. Koseoglu-Imer, Mohammad J. Taherzadeh

^*Corresponding author for this work

Department of Environmental Engineering

Research output: Contribution to journal › Article › peer-review

21 Citations (Scopus)

Abstract

Fossil-based materials such as methanol are frequently used in the denitrification process of advanced biological wastewater treatment as external carbon source. Volatile fatty acids (VFAs) produced by anaerobic digestion of food waste, are sustainable compounds with the potential to act as carbon sources for denitrification, reducing carbon footprint and material costs. In this study, the effectiveness of food waste-derived VFAs (AD-VFA) was investigated in the post-denitrification process in comparison with synthetic VFA and methanol as carbon sources. Acetic acid had the highest rate of disappearance among single tested VFAs with a denitrification rate of 0.44 g NO_x-N removed/m²/day, indicating a preferential utilization pattern. While AD-VFA had a denitrification rate of 0.61 mg NO_x-N removed/m²/day, sVFA had a rate of 0.57 mg NO_x-N removed/m²/day, indicating that impurities in AD-VFA did not play substantial role in denitrification. AD-VFA proved to be promising carbon source alternative for denitrification in wastewater treatment plants.

Original language	English
Article number	128046
Journal	Bioresource Technology
Volume	364
DOIs	https://doi.org/10.1016/j.biortech.2022.128046
Publication status	Published - Nov 2022

Bibliographical note

Publisher Copyright:
© 2022 The Author(s)

Funding

The authors would like to thank the Sweden's Innovation Agency, Swedish Research Council, and the University of Borås for their technical and financial support of this work. We also thank Lucica Enache and Ann Mattsson from Gryaab-Ryaverket WWTP, Gothenburg, for their kind technical and scientific support. The first author (T.S) is sponsored via PhD grant from Turkish Scientific and the Technical Research Council TUBITAK (2211-A Internal Graduate Scholarship Programme). The authors would like to thank the Sweden’s Innovation Agency, Swedish Research Council, and the University of Borås for their technical and financial support of this work. We also thank Lucica Enache and Ann Mattsson from Gryaab-Ryaverket WWTP, Gothenburg, for their kind technical and scientific support. The first author (T.S) is sponsored via PhD grant from Turkish Scientific and the Technical Research Council TUBITAK (2211-A Internal Graduate Scholarship Programme).

Funders	Funder number
Gryaab-Ryaverket WWTP
Sweden's Innovation Agency
Technical Research Council TUBITAK
VINNOVA
Vetenskapsrådet
Högskolan i Borås

Keywords

Denitrification
External carbon source
Food waste
Moving bed biofilm reactor
Volatile fatty acids

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.biortech.2022.128046

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title = "Potential of food waste-derived volatile fatty acids as alternative carbon source for denitrifying moving bed biofilm reactors",

abstract = "Fossil-based materials such as methanol are frequently used in the denitrification process of advanced biological wastewater treatment as external carbon source. Volatile fatty acids (VFAs) produced by anaerobic digestion of food waste, are sustainable compounds with the potential to act as carbon sources for denitrification, reducing carbon footprint and material costs. In this study, the effectiveness of food waste-derived VFAs (AD-VFA) was investigated in the post-denitrification process in comparison with synthetic VFA and methanol as carbon sources. Acetic acid had the highest rate of disappearance among single tested VFAs with a denitrification rate of 0.44 g NOx-N removed/m2/day, indicating a preferential utilization pattern. While AD-VFA had a denitrification rate of 0.61 mg NOx-N removed/m2/day, sVFA had a rate of 0.57 mg NOx-N removed/m2/day, indicating that impurities in AD-VFA did not play substantial role in denitrification. AD-VFA proved to be promising carbon source alternative for denitrification in wastewater treatment plants.",

keywords = "Denitrification, External carbon source, Food waste, Moving bed biofilm reactor, Volatile fatty acids",

author = "Tugba Sapmaz and Reza Manafi and Amir Mahboubi and Dag Lorick and Koseoglu-Imer, {Derya Y.} and Taherzadeh, {Mohammad J.}",

note = "Publisher Copyright: {\textcopyright} 2022 The Author(s)",

year = "2022",

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doi = "10.1016/j.biortech.2022.128046",

language = "English",

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AU - Sapmaz, Tugba

AU - Manafi, Reza

AU - Mahboubi, Amir

AU - Lorick, Dag

AU - Koseoglu-Imer, Derya Y.

AU - Taherzadeh, Mohammad J.

PY - 2022/11

Y1 - 2022/11

N2 - Fossil-based materials such as methanol are frequently used in the denitrification process of advanced biological wastewater treatment as external carbon source. Volatile fatty acids (VFAs) produced by anaerobic digestion of food waste, are sustainable compounds with the potential to act as carbon sources for denitrification, reducing carbon footprint and material costs. In this study, the effectiveness of food waste-derived VFAs (AD-VFA) was investigated in the post-denitrification process in comparison with synthetic VFA and methanol as carbon sources. Acetic acid had the highest rate of disappearance among single tested VFAs with a denitrification rate of 0.44 g NOx-N removed/m2/day, indicating a preferential utilization pattern. While AD-VFA had a denitrification rate of 0.61 mg NOx-N removed/m2/day, sVFA had a rate of 0.57 mg NOx-N removed/m2/day, indicating that impurities in AD-VFA did not play substantial role in denitrification. AD-VFA proved to be promising carbon source alternative for denitrification in wastewater treatment plants.

AB - Fossil-based materials such as methanol are frequently used in the denitrification process of advanced biological wastewater treatment as external carbon source. Volatile fatty acids (VFAs) produced by anaerobic digestion of food waste, are sustainable compounds with the potential to act as carbon sources for denitrification, reducing carbon footprint and material costs. In this study, the effectiveness of food waste-derived VFAs (AD-VFA) was investigated in the post-denitrification process in comparison with synthetic VFA and methanol as carbon sources. Acetic acid had the highest rate of disappearance among single tested VFAs with a denitrification rate of 0.44 g NOx-N removed/m2/day, indicating a preferential utilization pattern. While AD-VFA had a denitrification rate of 0.61 mg NOx-N removed/m2/day, sVFA had a rate of 0.57 mg NOx-N removed/m2/day, indicating that impurities in AD-VFA did not play substantial role in denitrification. AD-VFA proved to be promising carbon source alternative for denitrification in wastewater treatment plants.

KW - Denitrification

KW - External carbon source

KW - Food waste

KW - Moving bed biofilm reactor

KW - Volatile fatty acids

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Potential of food waste-derived volatile fatty acids as alternative carbon source for denitrifying moving bed biofilm reactors

Abstract

Bibliographical note

Funding

Keywords

UN SDGs

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