1
|
Kora E, Antonopoulou G, Zhang Y, Yan Q, Lyberatos G, Ntaikou I. Investigating the efficiency of a two-stage anaerobic-aerobic process for the treatment of confectionery industry wastewaters with simultaneous production of biohydrogen and polyhydroxyalkanoates. ENVIRONMENTAL RESEARCH 2024; 248:118526. [PMID: 38395334 DOI: 10.1016/j.envres.2024.118526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 02/12/2024] [Accepted: 02/19/2024] [Indexed: 02/25/2024]
Abstract
The scope of the current study was to investigate the efficiency of a two-stage anaerobic-aerobic process for the simultaneous treatment and valorization of selective wastewater streams from a confectionary industry. The specific wastewater (confectionary industry wastewater, CIW) was a mixture of the rinsing eluting during washing of the cauldrons in which jellies and syrups were produced, and contained mainly readily fermentable sugars, being thus of high organic load. The first stage of the process was the dark fermentation (DF) of the CIW in continuous, attached-biomass systems, in which the effect on hydrogen yields and distribution of metabolites were studied for different packing materials (ceramic or plastic), hydraulic retention times, HRTs (12 h-30 h) and feed substrate concentration (20 g COD/L- 50 g COD/L). In the second stage, the effectiveness of the aerobic treatment of the DF effluents was evaluated in terms of the reduction of the organic load and the production of polyhydroxyalkanoates (PHAs) through an enriched mixed microbial culture (MMC). The MMC was developed in a continuous draw and fill system, in which the accumulation potential of PHAs was studied. It was shown that the hydrogen production rates decreased for increasing substrate concentration and HRTs, with a maximum of 12.70 ± 0.35 m3 H2/m3 initial CIW achieved for the lowest HRT and feed concentration and using ceramic beads as packing material. Butyrate, acetate and lactate were the main metabolites generated in all cases, in different ratios. The distribution of metabolites during DF was shown to highly affect the efficiency of the second process in terms of both the reduction of organic load and the PHAs yields. The highest removal of organic load achieved after 48 h of aerobic treatment was 84.0 ± 0.9 %, whereas the maximum PHAs yield was 21.46 ± 0.13 kg PHAs/m3 initial CIW.
Collapse
Affiliation(s)
- Elianta Kora
- Institute of Chemical Engineering Sciences, Foundation for Research and Technology, 26504, Patras, Greece; Department of Sustainable Agriculture, University of Patras, 2 Seferi St., 30100, Agrinio, Greece
| | - Georgia Antonopoulou
- Institute of Chemical Engineering Sciences, Foundation for Research and Technology, 26504, Patras, Greece; Department of Sustainable Agriculture, University of Patras, 2 Seferi St., 30100, Agrinio, Greece
| | - Yi Zhang
- Department of Environmental Science and Engineering, Fudan University, 2105 Songhu Road, Yangpu District, Shanghai, China
| | - Qun Yan
- School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, China
| | - Gerasimos Lyberatos
- Institute of Chemical Engineering Sciences, Foundation for Research and Technology, 26504, Patras, Greece; School of Chemical Engineering, National Technical University of Athens, 15780, Athens, Greece
| | - Ioanna Ntaikou
- Institute of Chemical Engineering Sciences, Foundation for Research and Technology, 26504, Patras, Greece; Department of Civil Engineering, University of Patras, 26500, Patras, Greece.
| |
Collapse
|
2
|
Kora E, Patrinou V, Antonopoulou G, Ntaikou I, Terkelekopoulou AG, Lyberatos G. Dark fermentation of expired fruit juices for biohydrogen production followed by treatment and biotechnological exploitation of effluents towards bioplastics and microbial lipids. Biochem Eng J 2023. [DOI: 10.1016/j.bej.2023.108901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/22/2023]
|
3
|
Production efficiency and properties of poly(3hydroxybutyrate-co-3hydroxyvalerate) generated via a robust bacterial consortium dominated by Zoogloea sp. using acidified discarded fruit juices as carbon source. Int J Biol Macromol 2023; 226:1500-1514. [PMID: 36511266 DOI: 10.1016/j.ijbiomac.2022.11.262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 11/23/2022] [Accepted: 11/24/2022] [Indexed: 11/27/2022]
Abstract
In the current study, a mixed microbial culture (MMC) of polyhydroxyalkanoates (PHAs) producers was developed under nutrient stress and was assessed as biocatalyst for the production of high-yielding PHAs from fermented (acidified) discarded fruit juices (DFJ). The structure of the MMC was analyzed periodically to determine its microbial dynamics, revealing that Zoogloae sp. dominated throughout the operation of the system. The efficiency of PHAs production from the MMC was further optimized in batch mode by altering the ratio of C to N, the ratio of carbon sources (propionate and butyrate), and the initial pH, and subsequently different fermentation mixtures of acidified DFJ were assessed as substrates at optimal conditions. Upon solvent extraction, the properties of recovered PHAs were analyzed, showing that in all cases P(3HB-co-3HV) was produced, with Tm ranging from 90.5 to 168.8 °C, and maximum obtained yields 54.61 ± 4.31 % and 43.27 ± 2.13 %, from synthetic substrates and DFJ, respectively. Overall, it was shown that the developed MMC can be efficiently applied as biocatalyst for the exploitation of sugary wastewaters, such as DFJ, towards bio-based and biodegradable plastics bearing the required properties to substitute fossil plastics, into the concept of a circular economy.
Collapse
|
4
|
From Organic Wastes and Hydrocarbons Pollutants to Polyhydroxyalkanoates: Bioconversion by Terrestrial and Marine Bacteria. SUSTAINABILITY 2022. [DOI: 10.3390/su14148241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The use of fossil-based plastics has become unsustainable because of the polluting production processes, difficulties for waste management sectors, and high environmental impact. Polyhydroxyalkanoates (PHA) are bio-based biodegradable polymers derived from renewable resources and synthesized by bacteria as intracellular energy and carbon storage materials under nutrients or oxygen limitation and through the optimization of cultivation conditions with both pure and mixed culture systems. The PHA properties are affected by the same principles of oil-derived polyolefins, with a broad range of compositions, due to the incorporation of different monomers into the polymer matrix. As a consequence, the properties of such materials are represented by a broad range depending on tunable PHA composition. Producing waste-derived PHA is technically feasible with mixed microbial cultures (MMC), since no sterilization is required; this technology may represent a solution for waste treatment and valorization, and it has recently been developed at the pilot scale level with different process configurations where aerobic microorganisms are usually subjected to a dynamic feeding regime for their selection and to a high organic load for the intracellular accumulation of PHA. In this review, we report on studies on terrestrial and marine bacteria PHA-producers. The available knowledge on PHA production from the use of different kinds of organic wastes, and otherwise, petroleum-polluted natural matrices coupling bioremediation treatment has been explored. The advancements in these areas have been significant; they generally concern the terrestrial environment, where pilot and industrial processes are already established. Recently, marine bacteria have also offered interesting perspectives due to their advantageous effects on production practices, which they can relieve several constraints. Studies on the use of hydrocarbons as carbon sources offer evidence for the feasibility of the bioconversion of fossil-derived plastics into bioplastics.
Collapse
|
5
|
Koller M, Obruča S. Biotechnological production of polyhydroxyalkanoates from glycerol: A review. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2022. [DOI: 10.1016/j.bcab.2022.102333] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
|
6
|
Dubey S, Mishra S. Efficient Production of Polyhydroxyalkanoate Through Halophilic Bacteria Utilizing Algal Biodiesel Waste Residue. Front Bioeng Biotechnol 2021; 9:624859. [PMID: 34604181 PMCID: PMC8481892 DOI: 10.3389/fbioe.2021.624859] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Accepted: 01/25/2021] [Indexed: 11/13/2022] Open
Abstract
The objective of the current work was to investigate the potential of halophilic bacterial isolates for efficient utilization of crude glycerol from algal biodiesel waste into polyhydroxyalkanoates (PHAs) a green plastic. Screening of the isolates was directly done in algal biodiesel waste residue containing solid agar plates supplemented with Nile red. Crude glycerol is a biodiesel waste whose bioconversion into value-added products provides an alternative for efficient management with dual benefit. For the scale-up studies of PHAs, Halomonas spp. especially H. daqingensis was observed as a potential candidate growing well in 3% Algal biodiesel waste residue (ABWR), 5% NaCl supplementation at 35°C within 48 h of incubation. Maximum Cell dry weight (CDW) of 0.362 ± 0.001 g and 0.236 ± 0.003 g PHA was obtained with H. daqingensis when grown in the fermentor with 0.5 vvm air flow rate and 200 rpm containing 3% ABWR supplemented with 5% NaCl at 35°C incubation temperature for 48 h. ABWR can serve as a sole substrate for PHA production at an industrial scale serving two approaches: getting rid of the biodiesel industrial waste containing high amount of glycerol besides using waste replacing commercial substrate thereby reducing the cost of the product.
Collapse
Affiliation(s)
- Sonam Dubey
- Applied Phycology and Biotechnology division, CSIR - Central Salt and Marine Chemicals Research Institute, Bhavnagar, India
| | - Sandhya Mishra
- Applied Phycology and Biotechnology division, CSIR - Central Salt and Marine Chemicals Research Institute, Bhavnagar, India
| |
Collapse
|
7
|
Goyal S, Hernández NB, Cochran EW. An update on the future prospects of glycerol polymers. POLYM INT 2021. [DOI: 10.1002/pi.6209] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Shailja Goyal
- Department of Chemical and Biological Engineering Iowa State University Ames IA USA
| | - Nacú B Hernández
- Department of Chemical and Biological Engineering Iowa State University Ames IA USA
| | - Eric W Cochran
- Department of Chemical and Biological Engineering Iowa State University Ames IA USA
| |
Collapse
|
8
|
Wen Q, Liu B, Li F, Chen Z. Substrate strategy optimization for polyhydroxyalkanoates producing culture enrichment from crude glycerol. BIORESOURCE TECHNOLOGY 2020; 311:123516. [PMID: 32428849 DOI: 10.1016/j.biortech.2020.123516] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 05/06/2020] [Accepted: 05/07/2020] [Indexed: 06/11/2023]
Abstract
Crude glycerol is by-product produced from biodiesel industry and can be converted directly by mixed microbial culture (MMC) into polyhydroxyalkanoates (PHAs). This study investigated the effects of the reverse (SBR_A) and positive (SBR_B) glycerol gradient substrate strategy on PHA-accumulating culture enrichment and the maximum PHA accumulating stability under substrates with different glycerol and volatile fatty acid (VFA) proportion. The results showed that crude glycerol was mainly used for PHA production rather than biomass growth in SBR_A. The maximum qPHA was 0.65 g COD/g X-1·h-1 under sole crude glycerol condition in SBR_A, which was 2.41 times higher than that of SBR_B. Moreover, the PHA accumulating ability of the biomass from SBR_A was more stable than SBR_B. Saccharibacteria_genera_incertae_sedis was for the first time found to be the dominant genus using crude glycerol for PHA production. This research provides an insight into enrichment strategy to effectively enrich PHA-accumulating culture from crude glycerol.
Collapse
Affiliation(s)
- Qinxue Wen
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Baozhen Liu
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Fang Li
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Zhiqiang Chen
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
| |
Collapse
|
9
|
Ntaikou I, Koumelis I, Kamilari M, Iatridi Z, Tsitsilianis C, Lyberatos G. Effect of nitrogen limitation on polyhydroxyalkanoates production efficiency, properties and microbial dynamics using a soil-derived mixed continuous culture. INTERNATIONAL JOURNAL OF BIOBASED PLASTICS 2019. [DOI: 10.1080/24759651.2019.1648016] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Ioanna Ntaikou
- Institute of Chemical Engineering Sciences, Foundation for Research and Technology (ICEHT/FORTH), Patras, Greece
| | - Ioannis Koumelis
- Institute of Chemical Engineering Sciences, Foundation for Research and Technology (ICEHT/FORTH), Patras, Greece
- Department of Chemical Engineering, University of Patras, Patras, Greece
| | - Maria Kamilari
- Department of Biology, University of Patras, Patras, Greece
- Department of Biology, Section of Ecology and Evolution, University of Copenhagen, Copenhagen, Denmark
| | - Zacharoula Iatridi
- Department of Chemical Engineering, University of Patras, Patras, Greece
| | | | - Gerasimos Lyberatos
- Institute of Chemical Engineering Sciences, Foundation for Research and Technology (ICEHT/FORTH), Patras, Greece
- School of Chemical Engineering, National Technical University of Athens, Athens, Greece
| |
Collapse
|
10
|
Bhatia SK, Gurav R, Choi TR, Jung HR, Yang SY, Song HS, Jeon JM, Kim JS, Lee YK, Yang YH. Poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) production from engineered Ralstonia eutropha using synthetic and anaerobically digested food waste derived volatile fatty acids. Int J Biol Macromol 2019; 133:1-10. [DOI: 10.1016/j.ijbiomac.2019.04.083] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 03/29/2019] [Accepted: 04/11/2019] [Indexed: 12/15/2022]
|
11
|
Pokój T, Klimiuk E, Ciesielski S. Interactive effect of crude glycerin concentration and C:N ratio on polyhydroxyalkanoates accumulation by mixed microbial cultures modelled with Response Surface Methodology. WATER RESEARCH 2019; 156:434-444. [PMID: 30947043 DOI: 10.1016/j.watres.2019.03.033] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Revised: 03/04/2019] [Accepted: 03/18/2019] [Indexed: 05/26/2023]
Abstract
Response Surface Methodology (RSM) was used to investigate how the crude glycerin concentration and the carbon to nitrogen (C:N) ratio in the culture medium affect four indicators of polyhydroxyalkanoates (PHAs) accumulation by mixed microbial cultures (MMC): the observed coefficient of active-biomass yield (Yobs,BA), the observed coefficient of PHA yield (Yobs,PHA), the PHA content in biomass (XPHA) and the volumetric productivity (PrV). The C:N ratio had the largest effect on Yobs,BA and Yobs,PHA. When the C:N ratio was increased, Yobs,BA decreased and Yobs,PHA increased, regardless of the concentration of crude glycerin in the culture medium. The C:N ratio also had the largest effect on the PHA content, whereas volumetric productivity was strongly affected by both the C:N ratio and the crude glycerin concentration. The optimal conditions for PHA accumulation were a crude glycerin concentration of 8954 mg COD/L with a C:N ratio of 15.9 mg C/mg N-NH4, which gave a Yobs,BA of 0.29 mg CODBA/mg COD, a Yobs,PHA of 0.28 mg CODPHA/mg COD, a XPHA of 55.6% VSS and a PrV of 757.3 mg CODPHA/L⋅d (550.0 mg PHA/L⋅d). The accumulated PHAs consisted mainly of 3-hydroxybutyrate. By using RSM, it was possible to predict crude glycerin concentrations and C:N ratios not tested here that will allow desirable values of PHA content in biomass or PHA productivity, which can be useful for designing PHA production with MMC.
Collapse
Affiliation(s)
- Tomasz Pokój
- Department of Environmental Biotechnology, University of Warmia and Mazury in Olsztyn, Słoneczna Str. 45G, 10-719, Olsztyn, Poland.
| | - Ewa Klimiuk
- Department of Environmental Biotechnology, University of Warmia and Mazury in Olsztyn, Słoneczna Str. 45G, 10-719, Olsztyn, Poland
| | - Sławomir Ciesielski
- Department of Environmental Biotechnology, University of Warmia and Mazury in Olsztyn, Słoneczna Str. 45G, 10-719, Olsztyn, Poland
| |
Collapse
|
12
|
Wu W, Liu T, Deng X, Sun Q, Cao X, Feng Y, Wang B, Roy VA, Li RK. Ecofriendly UV-protective films based on poly(propylene carbonate) biocomposites filled with TiO2 decorated lignin. Int J Biol Macromol 2019; 126:1030-1036. [DOI: 10.1016/j.ijbiomac.2018.12.273] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 12/26/2018] [Accepted: 12/31/2018] [Indexed: 02/05/2023]
|
13
|
Application of process system engineering tools to the fed-batch production of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) from a vinasses-molasses Mixture. Bioprocess Biosyst Eng 2019; 42:1023-1037. [PMID: 30874887 DOI: 10.1007/s00449-019-02102-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Accepted: 03/03/2019] [Indexed: 01/06/2023]
Abstract
Fed-batch production of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) copolymer using vinasses-molasses mixture is carried out in this work by implementing different process systems engineering tools. Two fed-batch strategies are tested experimentally at 5 L scale, considering only offline information: (1) offline optimizing control and (2) exponential feeding. Application of these strategies showed that different feeding profiles result in different dynamic behaviour, influencing both, yield and biopolymer properties. As offline-based feeding strategies do not consider information of the culture status, they cannot deal with uncertainties. Therefore, a closed loop control strategy was implemented, which uses biomass and substrate information predicted online by soft-sensors. Results demonstrated the technical feasibility to produce biopolymer using a 75/25%vol. vinasses-molasses mixture. Successful implementation of the soft-sensor-based control strategy was evidenced at pilot plant scale, where sugar concentration was kept almost constant for 14 h, while obtaining the desired copolymer. Thus, proposed control strategy could be of interest at industrial-scale.
Collapse
|