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Energy-efficient biogas production from co-digestion of food waste and sewage sludge via kinetic modeling and exergy analyses.

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Title: Energy-efficient biogas production from co-digestion of food waste and sewage sludge via kinetic modeling and exergy analyses.
Authors: Tunay, Dogukan1 (AUTHOR) tunay.dogukan@gmail.com, Yildirim, Oznur1 (AUTHOR), Ozkaya, Bestami1 (AUTHOR)
Source: Environment, Development & Sustainability. Sep2025, Vol. 27 Issue 9, p21023-21041. 19p.
Subject Terms: *Biogas production, *Food waste, *Exergy, *Energy consumption, *Thermophilic bacteria, *Chemical kinetics, *Digestion, *Sewage sludge
Abstract: Co-digestion of the waste is used for the increasing biogas production performance frequently. Response surface methodology and exergy analysis for the co-digestion potential of the food waste and sewage sludge occurred. Thus, the most suitable conditions were examined statistically and energy efficiently. The highest biogas production was found as 484 mL per g VS for the thermophilic condition with F/I ratio of 3 and food waste-to-sewage sludge ratio 1:1. When the energy and exergy performance of thermophilic and mesophilic conditions were compared, the most energetically efficient conditions were 45 °C, F/I ratio of 5 and food-to-total substrate ratio of 1:2. In the study, total energy and biogas efficiencies were found that the thermophilic conditions in which temperature 55 °C, F/I ratio of 1 and food-to-total substrate ratio of 1:3 were the best operational conditions (effectiveness: 63.8%, exergy efficiency 42.2% and integrated efficiency 26.9%). These statistical calculations and energy balances can change according to the substrates and may contribute to the energy production potential of the biogas plants by considering the most efficient operational conditions. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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Header DbId: enr
DbLabel: Energy & Power Source
An: 188151275
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PubTypeId: academicJournal
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Energy-efficient biogas production from co-digestion of food waste and sewage sludge via kinetic modeling and exergy analyses.
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  Data: <searchLink fieldCode="AR" term="%22Tunay%2C+Dogukan%22">Tunay, Dogukan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> tunay.dogukan@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Yildirim%2C+Oznur%22">Yildirim, Oznur</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ozkaya%2C+Bestami%22">Ozkaya, Bestami</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Environment%2C+Development+%26+Sustainability%22">Environment, Development & Sustainability</searchLink>. Sep2025, Vol. 27 Issue 9, p21023-21041. 19p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22Biogas+production%22">Biogas production</searchLink><br />*<searchLink fieldCode="DE" term="%22Food+waste%22">Food waste</searchLink><br />*<searchLink fieldCode="DE" term="%22Exergy%22">Exergy</searchLink><br />*<searchLink fieldCode="DE" term="%22Energy+consumption%22">Energy consumption</searchLink><br />*<searchLink fieldCode="DE" term="%22Thermophilic+bacteria%22">Thermophilic bacteria</searchLink><br />*<searchLink fieldCode="DE" term="%22Chemical+kinetics%22">Chemical kinetics</searchLink><br />*<searchLink fieldCode="DE" term="%22Digestion%22">Digestion</searchLink><br />*<searchLink fieldCode="DE" term="%22Sewage+sludge%22">Sewage sludge</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Co-digestion of the waste is used for the increasing biogas production performance frequently. Response surface methodology and exergy analysis for the co-digestion potential of the food waste and sewage sludge occurred. Thus, the most suitable conditions were examined statistically and energy efficiently. The highest biogas production was found as 484 mL per g VS for the thermophilic condition with F/I ratio of 3 and food waste-to-sewage sludge ratio 1:1. When the energy and exergy performance of thermophilic and mesophilic conditions were compared, the most energetically efficient conditions were 45 °C, F/I ratio of 5 and food-to-total substrate ratio of 1:2. In the study, total energy and biogas efficiencies were found that the thermophilic conditions in which temperature 55 °C, F/I ratio of 1 and food-to-total substrate ratio of 1:3 were the best operational conditions (effectiveness: 63.8%, exergy efficiency 42.2% and integrated efficiency 26.9%). These statistical calculations and energy balances can change according to the substrates and may contribute to the energy production potential of the biogas plants by considering the most efficient operational conditions. [ABSTRACT FROM AUTHOR]
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=188151275
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1007/s10668-023-03534-0
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 19
        StartPage: 21023
    Subjects:
      – SubjectFull: Biogas production
        Type: general
      – SubjectFull: Food waste
        Type: general
      – SubjectFull: Exergy
        Type: general
      – SubjectFull: Energy consumption
        Type: general
      – SubjectFull: Thermophilic bacteria
        Type: general
      – SubjectFull: Chemical kinetics
        Type: general
      – SubjectFull: Digestion
        Type: general
      – SubjectFull: Sewage sludge
        Type: general
    Titles:
      – TitleFull: Energy-efficient biogas production from co-digestion of food waste and sewage sludge via kinetic modeling and exergy analyses.
        Type: main
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          Name:
            NameFull: Tunay, Dogukan
      – PersonEntity:
          Name:
            NameFull: Yildirim, Oznur
      – PersonEntity:
          Name:
            NameFull: Ozkaya, Bestami
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          Dates:
            – D: 01
              M: 09
              Text: Sep2025
              Type: published
              Y: 2025
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              Value: 1387585X
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              Value: 27
            – Type: issue
              Value: 9
          Titles:
            – TitleFull: Environment, Development & Sustainability
              Type: main
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