Urban biowaste valorization by coupling anaerobic digestion and single cell protein production

Benyamin Khoshnevisan, Panagiotis Tsapekos, Yifeng Zhang, Borja Valverde Pérez, Irini Angelidaki*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Resource efficient and novel practices to produce proteinaceous food and feed sources can partially alleviate the protein scarcity problem. The conversion of low-value waste streams into single cell protein (SCP) seems a potent solution. This study evaluated the possibility of urban biowaste valorization through coupling anaerobic digestion and SCP production, and feeding a methanotroph mixed-culture with raw and upgraded biogas. In respect to nitrogen supply, the mixed-culture could grow well providing nutrients by direct addition of pasteurized centrifuged-filtered digestate or by adding electrochemically extracted ammonium from the digestate. The SCP yield on methane varied from 0.59 to 0.76 g cell dry weight (CDW)/g CH4. A high yield on methane (0.87 g CDW/g CH4) proved that biogas is a good substitute for natural gas for scaled-up microbial protein production. In addition, the produced SCP was rich in essential amino acids, marking the produced biomass comparable with other protein sources.

Original languageEnglish
Article number121743
JournalBioresource Technology
Volume290
Number of pages9
ISSN0960-8524
DOIs
Publication statusPublished - 2019

Keywords

  • Bio-waste valorization
  • Municipal solid waste
  • Nitrogen recovery
  • Protein scarcity
  • Single cell protein

Cite this

@article{3078aafe473a405d90d521c1f564e447,
title = "Urban biowaste valorization by coupling anaerobic digestion and single cell protein production",
abstract = "Resource efficient and novel practices to produce proteinaceous food and feed sources can partially alleviate the protein scarcity problem. The conversion of low-value waste streams into single cell protein (SCP) seems a potent solution. This study evaluated the possibility of urban biowaste valorization through coupling anaerobic digestion and SCP production, and feeding a methanotroph mixed-culture with raw and upgraded biogas. In respect to nitrogen supply, the mixed-culture could grow well providing nutrients by direct addition of pasteurized centrifuged-filtered digestate or by adding electrochemically extracted ammonium from the digestate. The SCP yield on methane varied from 0.59 to 0.76 g cell dry weight (CDW)/g CH4. A high yield on methane (0.87 g CDW/g CH4) proved that biogas is a good substitute for natural gas for scaled-up microbial protein production. In addition, the produced SCP was rich in essential amino acids, marking the produced biomass comparable with other protein sources.",
keywords = "Bio-waste valorization, Municipal solid waste, Nitrogen recovery, Protein scarcity, Single cell protein",
author = "Benyamin Khoshnevisan and Panagiotis Tsapekos and Yifeng Zhang and {Valverde P{\'e}rez}, Borja and Irini Angelidaki",
year = "2019",
doi = "10.1016/j.biortech.2019.121743",
language = "English",
volume = "290",
journal = "Bioresource Technology",
issn = "0960-8524",
publisher = "Elsevier",

}

Urban biowaste valorization by coupling anaerobic digestion and single cell protein production. / Khoshnevisan, Benyamin; Tsapekos, Panagiotis; Zhang, Yifeng; Valverde Pérez, Borja; Angelidaki, Irini.

In: Bioresource Technology, Vol. 290, 121743, 2019.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Urban biowaste valorization by coupling anaerobic digestion and single cell protein production

AU - Khoshnevisan, Benyamin

AU - Tsapekos, Panagiotis

AU - Zhang, Yifeng

AU - Valverde Pérez, Borja

AU - Angelidaki, Irini

PY - 2019

Y1 - 2019

N2 - Resource efficient and novel practices to produce proteinaceous food and feed sources can partially alleviate the protein scarcity problem. The conversion of low-value waste streams into single cell protein (SCP) seems a potent solution. This study evaluated the possibility of urban biowaste valorization through coupling anaerobic digestion and SCP production, and feeding a methanotroph mixed-culture with raw and upgraded biogas. In respect to nitrogen supply, the mixed-culture could grow well providing nutrients by direct addition of pasteurized centrifuged-filtered digestate or by adding electrochemically extracted ammonium from the digestate. The SCP yield on methane varied from 0.59 to 0.76 g cell dry weight (CDW)/g CH4. A high yield on methane (0.87 g CDW/g CH4) proved that biogas is a good substitute for natural gas for scaled-up microbial protein production. In addition, the produced SCP was rich in essential amino acids, marking the produced biomass comparable with other protein sources.

AB - Resource efficient and novel practices to produce proteinaceous food and feed sources can partially alleviate the protein scarcity problem. The conversion of low-value waste streams into single cell protein (SCP) seems a potent solution. This study evaluated the possibility of urban biowaste valorization through coupling anaerobic digestion and SCP production, and feeding a methanotroph mixed-culture with raw and upgraded biogas. In respect to nitrogen supply, the mixed-culture could grow well providing nutrients by direct addition of pasteurized centrifuged-filtered digestate or by adding electrochemically extracted ammonium from the digestate. The SCP yield on methane varied from 0.59 to 0.76 g cell dry weight (CDW)/g CH4. A high yield on methane (0.87 g CDW/g CH4) proved that biogas is a good substitute for natural gas for scaled-up microbial protein production. In addition, the produced SCP was rich in essential amino acids, marking the produced biomass comparable with other protein sources.

KW - Bio-waste valorization

KW - Municipal solid waste

KW - Nitrogen recovery

KW - Protein scarcity

KW - Single cell protein

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DO - 10.1016/j.biortech.2019.121743

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VL - 290

JO - Bioresource Technology

JF - Bioresource Technology

SN - 0960-8524

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