Bio-based conversion of volatile fatty acids from waste streams to polyhydroxyalkanoates using mixed microbial cultures

Pérez-Zabaleta, Mariel; Atasoy, Merve; Khatami, Kasra; Eriksson, Ejnar; Çetecioğlu, Zeynep

doi:10.1016/j.biortech.2020.124604

Cited by 48 publications

(18 citation statements)

References 42 publications

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“…It is should be remarked that butyric acid follows the same metabolic pathway than acetic acid for PHA production [52]. However, PHA titer from MMC could be considerably higher under most favorable conditions as it can be seen in the study of Pérez-Zabaleta et al [16].…”

Section: Pha Yieldmentioning

confidence: 86%

“…Volatile fatty acids (VFAs) are excellent substrates for the production of PHA by MMC [16]. Therefore, the utilization of the dark fermentation (DF) process to obtain VFAs from different biomass waste is a very interesting option for the aerobic production of PHAs [7,17,18].…”

Section: Introductionmentioning

confidence: 99%

“…With regard to the VFAs profile, the proportion between the different acids has a great influence on the mechanical properties of the final plastics and their subsequent industrial application. In the PHA production with MMC, acetic and butyric acids favor the production of 3-hydroxybutyrate (3HB) while propionic and valeric acids promote the synthesis of 3-hydroxyvalerate (3HV) [16,21]. Poly(3-hydroxybutyrate) (P (3HB)) is brittle and rigid and therefore has limited industrial applications.…”

Section: Introductionmentioning

confidence: 99%

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Influence of the total concentration and the profile of volatile fatty acids on polyhydroxyalkanoates (PHA) production by mixed microbial cultures

Bravo-Porras

Fernández-Güelfo

Álvarez-Gallego

et al. 2021

Biomass Conv. Bioref.

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Polyhydroxyalkanoates (PHAs) production from lignocellulosic biomass using mixed microbial cultures (MMC) is a potential cheap alternative for reducing the use of petroleum-based plastics. In this study, an MMC adapted to acidogenic effluent from dark fermentation (DF) of exhausted sugar beet cossettes (ESBC) has been tested in order to determine its capability to produce PHAs from nine different synthetic mixtures of volatile fatty acids (VFAs). The tests consisted of mixtures of acetic, propionic, butyric, and valeric acids in the range of 1.5–9.0 g/L of total acidity and with three different valeric:butyric ratios (10:1, 1:1, and 1:10). Experimental results have shown a consistent preference of the MMC for the butyric and valeric acids as carbon source instead other shorter acids (propionic or acetic) in terms of PHA production yield (estimated in dry cell weight basis), with a maximum value of 23% w/w. Additionally, valeric-rich mixtures have demonstrated to carry out a fast degradation process but with poor final PHA production compared with high butyric mixtures. Finally, high initial butyric and valeric concentrations (1.1 g/L and 4.1 g/L) have demonstrated to be counterproductive to PHA production.

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Section: Pha Yieldmentioning

confidence: 86%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Influence of the total concentration and the profile of volatile fatty acids on polyhydroxyalkanoates (PHA) production by mixed microbial cultures

Bravo-Porras

Fernández-Güelfo

Álvarez-Gallego

et al. 2021

Biomass Conv. Bioref.

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“…In the past decades, smaller systems have been installed for black (toilet) water (BW) treatment as a result of the implementation of source-separated sanitation concepts [9]. The production of volatile fatty acids (VFA) from, for example, primary sludge [71] and also polyhydroxyalkonates production [72] can be an alternative to biogas production.…”

Section: In-and Outputsmentioning

confidence: 99%

Nature-Based Units as Building Blocks for Resource Recovery Systems in Cities

Hullebusch

Bani

Carvalho³

et al. 2021

Water

Self Cite

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Cities are producers of high quantities of secondary liquid and solid streams that are still poorly utilized within urban systems. In order to tackle this issue, there has been an ever-growing push for more efficient resource management and waste prevention in urban areas, following the concept of a circular economy. This review paper provides a characterization of urban solid and liquid resource flows (including water, nutrients, metals, potential energy, and organics), which pass through selected nature-based solutions (NBS) and supporting units (SU), expanding on that characterization through the study of existing cases. In particular, this paper presents the currently implemented NBS units for resource recovery, the applicable solid and liquid urban waste streams and the SU dedicated to increasing the quality and minimizing hazards of specific streams at the source level (e.g., concentrated fertilizers, disinfected recovered products). The recovery efficiency of systems, where NBS and SU are combined, operated at a micro- or meso-scale and applied at technology readiness levels higher than 5, is reviewed. The importance of collection and transport infrastructure, treatment and recovery technology, and (urban) agricultural or urban green reuse on the quantity and quality of input and output materials are discussed, also regarding the current main circularity and application challenges.

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“…Hasil fermentasi anaerobik air limbah industri minyak kelapa sawit akan menghasilkan ALV (Lee et al, 2014;Chinwetkitvanich and Jaikawna, 2015). ALV ini dapat digunakan sebagai prekursor dalam memproduksi PHA (Zhang et al, 2019;Atasoy, Eyice and Cetecioglu, 2020;Patel et al, 2021;Perez-Zabaleta et al, 2021).…”

Section: Pendahuluanunclassified

Identifikasi Senyawa Asam Lemak Volatil dari Air Limbah Industri Minyak Kelapa Sawit untuk Produksi Polihidroksialkanoat oleh Ralstonia eutropha JMP 134

Aznury¹,

Setiadi²

2021

J selulosa

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Identification of Volatile Fatty Acids from Palm Oil Mill Effluent for Polyhydroxyalkanoate Production by Ralstonia eutropha JMP 134 Abstract Polyhydroxyalkanoate (PHA) is a bioplastic which is derived from bacterial fermentation. In this study, PHA is produced by utilizing Ralstonia eutropha JMP 134 and volatile fatty acids (VFA) from palm oil industrial wastewater as a precursor. The aim of this research is to study the effect of carbon source, addition time, and VFA concentration on PHA production by fermentation using Ralstonia eutropha JMP 134 in batch. PHA and dry cell weight (DCW) concentrations obtained by adding VFA from palm oil industrial wastewater in batches at 20 and 40 hours were 0.014 g/L.hour, 2.76 g/L and 3.66 g/L, respectively. The results also showed that the time of adding VFA greatly affected cell growth, with the best addition time being after the 20th hour. Keywords: palm oil industrial wastewater, polyhydroxyalkanoate (PHA), batch, Ralstonia eutropha JMP 134, volatile fatty acids (VFA) Abstrak Polihidroksialkanoat (PHA) adalah bioplastik yang diproses melalui proses fermentasi dengan mikroba. Pada penelitian ini, PHA diproduksi dengan menggunakan Ralstonia eutropha JMP 134 dan memanfaatkan asam lemak volatil (ALV) dari air limbah industri minyak kelapa sawit sebagai prekursor. Penelitian ditujukan mempelajari pengaruh sumber karbon, waktu penambahan, dan konsentrasi ALV terhadap poduksi PHA yang difermentasi menggunakan Ralstonia eutropha JMP 134 secara batch. Konsentrasi PHA dan berat kering sel (BKS) yang diperoleh pada penambahan ALV dari air limbah industri kelapa sawit secara batch pada jam ke-20 dan 40 masing-masing bernilai 0,014 g/L.jam, 2,76 g/L dan 3,66 g/L. Hasil penelitian memperlihatkan pula bahwa waktu penambahan ALV sangat mempengaruhi pertumbuhan sel, dengan waktu penambahan yang terbaik adalah setelah pada jam ke-20. Kata kunci: air limbah industri minyak kelapa sawit, polihidroksialkanoat (PHA), batch, Ralstonia eutropha JMP 134, asam lemak volatil (ALV)

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Bio-based conversion of volatile fatty acids from waste streams to polyhydroxyalkanoates using mixed microbial cultures

Cited by 48 publications

References 42 publications

Influence of the total concentration and the profile of volatile fatty acids on polyhydroxyalkanoates (PHA) production by mixed microbial cultures

Influence of the total concentration and the profile of volatile fatty acids on polyhydroxyalkanoates (PHA) production by mixed microbial cultures

Nature-Based Units as Building Blocks for Resource Recovery Systems in Cities

Identifikasi Senyawa Asam Lemak Volatil dari Air Limbah Industri Minyak Kelapa Sawit untuk Produksi Polihidroksialkanoat oleh Ralstonia eutropha JMP 134

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