Determination of the potential of pickle wastewater as feedstock for biopolymer production

Ayse Guventurk; Dilara Ozturk; Goksin Ozyildiz; Ezgi Ayisigi; Didem Guven; Gulsum Emel Zengin; Didem Okutman Tas; Tugba Olmez-Hanci; Ilke Pala-Ozkok; Nevin Yagci; Güçlü Insel; Emine Cokgor

doi:10.2166/wst.2020.060

Determination of the potential of pickle wastewater as feedstock for biopolymer production

Ayse Guventurk, Dilara Ozturk, Goksin Ozyildiz, Ezgi Ayisigi, Didem Guven, Gulsum Emel Zengin, Didem Okutman Tas, Tugba Olmez-Hanci, Ilke Pala-Ozkok, Nevin Yagci, Güçlü Insel, Emine Cokgor^*

^*Corresponding author for this work

Department of Environmental Engineering

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

11 Citations (Scopus)

Abstract

Food industry wastewater (FIWW) streams with high organic content are among the most suitable and inexpensive candidates for polyhydroxyalkanoate (PHA) biopolymer production. Due to its high organic acid content, pickle industry wastewater (PIWW), can be considered as one of the prospective alternatives to petroleum-based polymers for PHA production. In this context, this study aimed to investigate the production of PHA with enriched microbial culture using PIWW. Two laboratory scale sequencing batch reactors (SBRs) were operated under aerobic dynamic feeding conditions at a sludge retention time of 8 days, with a total cycle duration of 24 hours. SBRs were fed with peptone mixture and PIWW. In-cycle analysis and batch respirometric tests were performed to evaluate PHA storage together with biodegradation kinetics. In-cycle analysis showed that maximum PHA content was 1,820 mgCOD/L, corresponding to 44% in the biomass (ratio of chemical oxygen demand (COD) to volatile suspended solids) for PIWW. Experimental results were also confirmed with activated sludge model simulations. As for the PHA composition, hydroxybutyrate was the major fraction. Model simulations proposed a unique conversion-degradation-storage pathway for the organic acid mixture. This paper presents a novel insight for better understanding of PHA biopolymer production using high saline FIWW.

Original language	English
Pages (from-to)	21-28
Number of pages	8
Journal	Water Science and Technology
Volume	81
Issue number	1
DOIs	https://doi.org/10.2166/wst.2020.060
Publication status	Published - 1 Jan 2020

Bibliographical note

Publisher Copyright:
© IWA Publishing 2020 Water Science & Technology

Funding

This study was conducted in the UBUTAM Laboratories at ITU, which was built with the support of Istanbul Development Agency (Project No. TR10/15/YNK/0045), financed by TUBITAK (Project No. 1003-KMY-ANAK 117Z658), and ITU BAP (Project No. 39833). Prof. Hiroyasu Satoh is also kindly acknowledged for his valuable support for the PHA measurement methodology.

Funders	Funder number
ITU BAP	39833
TUBITAK	1003-KMY-ANAK 117Z658
International Technological University
Istanbul Kalkinma Ajansi	TR10/15/YNK/0045

Keywords

Biodegradation characteristics
Biopolymers
Kinetics
PHA
Pickle industry
Saline wastewater

UN SDGs

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

Access to Document

10.2166/wst.2020.060

Cite this

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abstract = "Food industry wastewater (FIWW) streams with high organic content are among the most suitable and inexpensive candidates for polyhydroxyalkanoate (PHA) biopolymer production. Due to its high organic acid content, pickle industry wastewater (PIWW), can be considered as one of the prospective alternatives to petroleum-based polymers for PHA production. In this context, this study aimed to investigate the production of PHA with enriched microbial culture using PIWW. Two laboratory scale sequencing batch reactors (SBRs) were operated under aerobic dynamic feeding conditions at a sludge retention time of 8 days, with a total cycle duration of 24 hours. SBRs were fed with peptone mixture and PIWW. In-cycle analysis and batch respirometric tests were performed to evaluate PHA storage together with biodegradation kinetics. In-cycle analysis showed that maximum PHA content was 1,820 mgCOD/L, corresponding to 44% in the biomass (ratio of chemical oxygen demand (COD) to volatile suspended solids) for PIWW. Experimental results were also confirmed with activated sludge model simulations. As for the PHA composition, hydroxybutyrate was the major fraction. Model simulations proposed a unique conversion-degradation-storage pathway for the organic acid mixture. This paper presents a novel insight for better understanding of PHA biopolymer production using high saline FIWW.",

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AU - Ozyildiz, Goksin

AU - Ayisigi, Ezgi

AU - Guven, Didem

AU - Zengin, Gulsum Emel

AU - Tas, Didem Okutman

AU - Olmez-Hanci, Tugba

AU - Pala-Ozkok, Ilke

AU - Yagci, Nevin

AU - Insel, Güçlü

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Determination of the potential of pickle wastewater as feedstock for biopolymer production

Abstract

Bibliographical note

Funding

Keywords

UN SDGs

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