Effect of pH on the production of volatile fatty acids in dark fermentation process of organic waste

Grzelak, J.; Ślęzak, R.; Krzystek, L.; Ledakowicz, S.

doi:10.1515/eces-2018-0020

Artykuł - szczegóły

Tytuł artykułu

Effect of pH on the production of volatile fatty acids in dark fermentation process of organic waste

Autorzy

Grzelak J. , Ślęzak R. , Krzystek L. , Ledakowicz S.

Wybrane pełne teksty z tego czasopisma

Identyfikatory

DOI

10.1515/eces-2018-0020

Warianty tytułu

Wpływ pH na produkcję lotnych kwasów tłuszczowych w procesie fermentacji ciemnej odpadów organicznych

Języki publikacji

Abstrakty

The aim of this study was to investigate the effect of pH on the dark fermentation process of kitchen waste by specifying the composition of the volatile fatty acids (VFA), H₂ and by drawing the carbon balance. Studies were carried out in 8 dm³ batch bioreactor in mesophilic conditions. The kitchen waste from the city of Lodz were used as a substrate. Based on the study, it was observed that most of the VFA was produced during the first two days of the process, while in the following days the production was diminished. The highest production of VFA (19.5 g/dm³) was obtained in the bioreactor, where the pH was 7 and 8. Analyzing the produced VFA it was observed that mostly the acetic and butyric acid had been produced. Most of acetic acid (over 70 %) was obtained in fermenter with pH 7 and 8. In contrast, most of the butyric acid (over 40 %) was in the bioreactor with a pH of 6. Production of H₂ was in the range from 4.29 to 26.5 dm3, wherein the largest amount of H₂ was created in the bioreactor with a pH of 6.

Słowa kluczowe

kitchen waste volatile fatty acids dark fermentation hydrogen

odpady kuchenne lotne kwasy tłuszczowe fermentacja ciemna wodór

Wydawca

Towarzystwo Chemii i Inżynierii Ekologicznej

Czasopismo

Ecological Chemistry and Engineering. S

Rocznik

2018

Tom

Vol. 25, nr 2

Strony

295--306

Opis fizyczny

Bibliogr. 32 poz., wykr., tab.

Twórcy

autor

Grzelak J.

justyna_grzelak@hotmail.com

Faculty of Process and Environmental Engineering, Lodz University of Technology, ul. Wólczańska 213, 90-924 Łódź, Poland

autor

Ślęzak R.

Faculty of Process and Environmental Engineering, Lodz University of Technology, ul. Wólczańska 213, 90-924 Łódź, Poland

autor

Krzystek L.

Faculty of Process and Environmental Engineering, Lodz University of Technology, ul. Wólczańska 213, 90-924 Łódź, Poland

autor

Ledakowicz S.

Faculty of Process and Environmental Engineering, Lodz University of Technology, ul. Wólczańska 213, 90-924 Łódź, Poland

Bibliografia

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).

Typ dokumentu

Bibliografia

Identyfikator YADDA

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