Raw dark fermentation effluent to support heterotrophic microalgae growth: microalgae successfully outcompete bacteria for acetate

Turon, Violette; Trably, Eric; Fayet, Axel; Fouilland, Éric; Steyer, Jean Phillipe

doi:10.1016/j.algal.2015.08.011

Cited by 59 publications

(18 citation statements)

References 45 publications

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“…Hence, it can serve as a preferred substrate for the subsequent AD process (Yeshanew et al, 2016c). Recently, several studies have exploited the potential of DFE for several applications, such as production of electricity via microbial fuel cells (Lee et al, 2014), biohydrogen via photofermentation (Ghimire et al, 2015b;Luongo et al, 2016), lipids via growth of heterotrophic microalgae (Turon et al, 2015), methane gas via AD (Yeshanew et al, 2016c), and value added products like biopolymers (Ghimire et al, 2015a). Therefore, the concept of hydrogen production using the DF process can be extended to a biorefinery context, where in addition to hydrogen, different other products of commercial interest can be simultaneously produced (Guo et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Co-production of Hydrogen and Methane From the Organic Fraction of Municipal Solid Waste in a Pilot Scale Dark Fermenter and Methanogenic Biofilm Reactor

Yeshanew

Paillet

Barrau³

et al. 2018

Front. Environ. Sci.

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The co-production of biohydrogen and methane from the organic fraction of municipal solid waste was investigated using a two-stage AD system, composed of a pilot scale dark fermenter (DF) and a continuous methanogenic biofilm reactor. From the DF process, a biohydrogen yield of 41.7 (± 2.3) ml H 2 /gVS added was achieved. The liquid DF effluent (DFE) was rich in short chain volatile fatty acids, i.e., mainly acetic and butyric acid. The DFE was valorized by producing methane in the methanogenic biofilm reactor. Two methanogenic biofilm reactors were used to assess the biotic and abiotic role of the DFE on the performance of the reactors. Regardless of the different DFE feeding (i.e., biotic and abiotic), similar and stable operational performance of the two methanogenic biofilm reactors were observed with a respective methane yield and COD removal efficiency of 280-300 ml CH 4 /gCOD removed and 80-90%. Both methanogenic biofilm reactors showed significant resistance toward organic shock loads and recovered fast after reactor disturbance. The total estimated energy recovered in the form of hydrogen and methane gas was, respectively, 28 and 72%, of the initial COD. HIGHLIGHTS • Simultaneous production of biohydrogen and methane from OFMSW was investigated. • A pilot scale dark fermenter and methanogenic biofilm reactor were used for, respectively, biohydrogen and methane production. • The biotic and abiotic role of the dark fermentation effluent on the methanogenic biofilm reactor was assessed. • Anaerobic biofilm reactors demonstrated a high tolerance toward an increased OLR. • H 2 and CH 4 was 28 and 72%, respectively, of the total energy recovery from the OFMSW.

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Section: Introductionmentioning

confidence: 99%

Co-production of Hydrogen and Methane From the Organic Fraction of Municipal Solid Waste in a Pilot Scale Dark Fermenter and Methanogenic Biofilm Reactor

Yeshanew

Paillet

Barrau³

et al. 2018

Front. Environ. Sci.

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“…It is concluded that careful optimization to be done for mixotrophic cultures of microalgae. Turon et al, (2015) To produce microalgal lipids that can be transformed to biodiesel fuel, one isolate with high lipid content was identified as Chlorella sp. Y8-1 by Lin and Wu (2015).…”

Section: Microalgae Cultivationmentioning

confidence: 99%

Bioenergy from Biofuel Residues and Wastes

Choudri

Baawain

2016

Water Environment Research

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This review includes works published in the general scientific literature during 2015 on the production of bioenergy and biofuel from waste residues generated during bioethanol and biodiesel production with a brief overview of current and emerging feedstocks. A section of this review summarizes literature on culturing algae for biofuels including bioreactors and open pond cultivation systems with the utilization of inorganic and organic sources of nutrients. New methods applicable to the mass culture of algae are highlighted. Algal cell harvesting and oil extraction techniques tested and developed for algae discussed alongwith policies and economics are also provided.

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“…The successful development of a novel hybrid dark fermentativephotoheterotrophic biohydrogen production approach requires a deep understanding of the microbial communities likely performing these metabolic processes in a tight synergy. Thus, in order to render this combined approach a viable alternative to the classic single-stage biohydrogen production methods, the metabolic waste-products generated during the dark fermentation step have to be readily available as substrates for algal biomass generation in the second step (Turon et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Exploitation of Algal-Bacterial Consortia in Combined Biohydrogen Generation and Wastewater Treatment

et al. 2019

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Microalgae cultivation in municipal, industrial, and agricultural wastewater is an emerging, highly effective approach for resource recovery and concomitant bioenergy generation. Wastewater effluents represent ideal sources of nutrients (especially nitrogen and phosphorous) for eukaryotic green algal species. However, the recovery performance of photosynthetic green algae is strongly dependent on the associated bacterial partners present in the effluents. Algal microbiome is a pivotal part of the algae holobiont and has a key role in modulating algal growth and functions in nature. There has been no comprehensive study on the importance of microbial communities supporting the algal hosts for the bulk of the time wastewater treatment methods have been in use. Our proposed approach applies a green microalgae-based photoheterotrophic degradation using dark fermentation effluent as substrate. The results showed that condition-dependent mutualistic relationships between the microbial and Chlorella algae populations had direct impact on the biodegradation efficiency and also on algal biohydrogen production. The genome level analysis of the novel hybrid biodegradation system provided important clues for the primary importance of the green algae partner in nitrogen and phosphorous removal. With further development and optimization this new approach can lead to a highly efficient simultaneous organic waste mitigation and renewable energy production technology.

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Raw dark fermentation effluent to support heterotrophic microalgae growth: microalgae successfully outcompete bacteria for acetate

Cited by 59 publications

References 45 publications

Co-production of Hydrogen and Methane From the Organic Fraction of Municipal Solid Waste in a Pilot Scale Dark Fermenter and Methanogenic Biofilm Reactor

Co-production of Hydrogen and Methane From the Organic Fraction of Municipal Solid Waste in a Pilot Scale Dark Fermenter and Methanogenic Biofilm Reactor

Bioenergy from Biofuel Residues and Wastes

Exploitation of Algal-Bacterial Consortia in Combined Biohydrogen Generation and Wastewater Treatment

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