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Güngörmüşler M, Tamayol A, Levin DB. Hydrogen Production by Immobilized Cells of Clostridium intestinale Strain URNW Using Alginate Beads. Appl Biochem Biotechnol 2021; 193:1558-1573. [PMID: 33484448 DOI: 10.1007/s12010-021-03503-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Accepted: 01/07/2021] [Indexed: 12/01/2022]
Abstract
Biological hydrogen (H2) is a promising candidate for production of renewable hydrogen. Using entrapped cells rather than conventional suspended cell cultures for the production of H2 offers several advantages, such as improved production yields related to higher cell density, and enhanced resistance to substrate and end-product inhibition. In this study, H2 production by a novel isolate of Clostridium intestinale (strain URNW) was evaluated using cells entrapped within 2% calcium-alginate beads under strictly anaerobic conditions. Both immobilized cells and suspended cultures were studied in sequential batch-mode anaerobic fermentation over 192 h. The production of H2 in the headspace was examined for four different initial cellobiose concentrations (5, 10, 20, and 40 mM). Although a lag period for initiation of the fermentation process was observed for bacteria entrapped within hydrogel beads, the immobilized cells achieved both higher volumetric production rates (mmol H2/(L culture h)) and molar yields (mol H2/mol glucose equivalent) of H2 compared with suspended cultures. In the current study, the maximum cellobiose consumption rate of 0.40 mM/h, corresponding to 133.3 mg/(L h), was achieved after 72 h of fermentation by immobilized cells, generating a high hydrogen yield of 3.57 mol H2/mol cellobiose, whereas suspended cultures only yielded 1.77 mol H2/mol cellobiose. The results suggest that cells remain viable within the hydrogels and proliferated with a slow rate over the course of fermentation. The stable productivity of immobilized cells over 8 days with four changes of medium depicted that the immobilized cells of the isolated strain can successfully yield higher hydrogen and lower soluble metabolites than suspended cells suggesting a feasible process for future applications for bioH2 production.
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Affiliation(s)
- Mine Güngörmüşler
- Department of Biosystems Engineering, University of Manitoba, Winnipeg, Manitoba, Canada. .,Department of Genetics and Bioengineering, Izmir University of Economics, Balçova, Izmir, Turkey.
| | - Ali Tamayol
- Department of Biosystems Engineering, University of Manitoba, Winnipeg, Manitoba, Canada.,Department of Biomedical Engineering, University of Connecticut Health Center, Farmington, CT, USA
| | - David B Levin
- Department of Biosystems Engineering, University of Manitoba, Winnipeg, Manitoba, Canada
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Parikh DT, Lanjekar KJ, Rathod VK. Kinetics and thermodynamics of lipase catalysed synthesis of propyl caprate. Biotechnol Lett 2019; 41:1163-1175. [DOI: 10.1007/s10529-019-02718-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Accepted: 08/06/2019] [Indexed: 10/26/2022]
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Jobard M, Pessiot J, Nouaille R, Fonty G, Sime-Ngando T. Microbial diversity in support of anaerobic biomass valorization. Crit Rev Biotechnol 2015; 37:1-10. [PMID: 26516020 DOI: 10.3109/07388551.2015.1100584] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Microbial diversity provides an immense reservoir of functions and supports key steps in maintaining ecosystem balance through matter decomposition processes and nutrient recycling. The use of microorganisms for biomolecule production is now common, but often involves single-strain cultures. In this review, we highlight the significance of using ecosystem-derived microbial diversity for biotechnological researches. In the context of organic matter mineralization, diversity of microorganisms is essential and enhances the degradation processes. We focus on anaerobic production of biomolecules of interest from discarded biomass, which is an important issue in the context of organic waste valorization and processing. Organic waste represents an important and renewable raw material but remains underused. It is commonly accepted that anaerobic mineralization of organic waste allows the production of diverse interesting molecules within several fields of application. We provide evidence that complex and diversified microbial communities isolated from ecosystems, i.e. microbial consortia, offer considerable advantages in degrading complex organic waste, to yield biomolecules of interest. We defend our opinion that this approach is more efficient and offers enhanced potential compared to the approaches that use single strain cultures.
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Affiliation(s)
- M Jobard
- a AFYREN SAS, Biopole Clermont Limagne , Saint-Beauzire Cedex , France
| | - J Pessiot
- a AFYREN SAS, Biopole Clermont Limagne , Saint-Beauzire Cedex , France.,b Laboratoire "Microorganismes: Génome et Environnement" , Clermont Université, Université Blaise Pascal , Clermont-Ferrand , France , and
| | - R Nouaille
- a AFYREN SAS, Biopole Clermont Limagne , Saint-Beauzire Cedex , France
| | - G Fonty
- b Laboratoire "Microorganismes: Génome et Environnement" , Clermont Université, Université Blaise Pascal , Clermont-Ferrand , France , and
| | - T Sime-Ngando
- b Laboratoire "Microorganismes: Génome et Environnement" , Clermont Université, Université Blaise Pascal , Clermont-Ferrand , France , and.,c CNRS, UMR 6023, LMGE , Aubiere , France
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Jobard M, Pessiot J, Nouaille R, Sime-Ngando T. Microbial diversity supporting dark fermentation of waste. Trends Biotechnol 2014; 32:549-550. [DOI: 10.1016/j.tibtech.2014.09.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2014] [Revised: 08/29/2014] [Accepted: 09/09/2014] [Indexed: 11/29/2022]
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Lin X, Xia Y, Yan Q, Shen W, Zhao M. Acid tolerance response (ATR) of microbial communities during the enhanced biohydrogen process via cascade acid stress. BIORESOURCE TECHNOLOGY 2014; 155:98-103. [PMID: 24434699 DOI: 10.1016/j.biortech.2013.12.097] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Revised: 12/17/2013] [Accepted: 12/21/2013] [Indexed: 06/03/2023]
Abstract
Enhanced biohydrogen production via cascade acid stress on microbial communities, structure patterns of the microbial communities revealed by PLFAs, and the succession of biohydrogen related species against cascade acid stress were all investigated. It was found that hydrogen production could be improved from 48.7 to 79.4mL/gVS after cascade acid stress. In addition, the Gram negative (G(-)) bacteria were found to be more tolerant to organic acids than those of the Gram positive (G(+)) bacteria, regardless of the dominance of G(+) bacteria within the microbial communities. Moreover, Clostridium butyricum, Clostridium aciditolerans and Azospira oryzae, were proved to be enriched, and then might play indispensable roles for the enhanced biohydrogen production after cascade acid stress, as which were responsible for the biohydrogen accumulation, acid tolerance and nitrogen removal, respectively.
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Affiliation(s)
- Xiaoqin Lin
- School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China
| | - Yan Xia
- School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China
| | - Qun Yan
- School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China.
| | - Wei Shen
- School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Mingxing Zhao
- School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China
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Show KY, Lee DJ, Pan X. Simultaneous biological removal of nitrogen-sulfur-carbon: recent advances and challenges. Biotechnol Adv 2012; 31:409-20. [PMID: 23267859 DOI: 10.1016/j.biotechadv.2012.12.006] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2012] [Revised: 12/07/2012] [Accepted: 12/14/2012] [Indexed: 12/17/2022]
Abstract
Biological removal of carbon, nitrogen and sulfur is drawing increasing research interest in search for an efficient and cost-effective wastewater treatment. While extensive work on separate removal of nitrogen and sulfur is well documented, investigation on simultaneous denitrifying sulfide removal has only been reported recently. Most of the work on denitrifying sulfide removal has been focusing on bioreactor performance, loading and operating conditions. Nonetheless, underlying principles elucidating the biochemical reactions and the mechanisms of the microbial degradation are yet to be established. In addition, unstable denitrifying sulfide removal which is a major operating problem that hinders practical application of the process, is yet to be resolved. This paper provides a review on the state-of-the-art development of simultaneous biological removal of sulfur, nitrogen and carbon. Research on bioreactor operation and performance, reactor configurations, mechanisms and modeling work including the use of mass balance analysis and artificial neural networks is delineated. An in-depth discussion on the microbial community and functional consortium is also provided. Challenges and future work on simultaneous biological removal of nitrogen-sulfur-carbon are also outlined.
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Affiliation(s)
- Kuan-Yeow Show
- Universiti Tunku Abdul Rahman, Department of Environmental Engineering, Faculty of Engineering and Green Technology, Perak, Malaysia
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Lahti P, Lindström M, Somervuo P, Heikinheimo A, Korkeala H. Comparative genomic hybridization analysis shows different epidemiology of chromosomal and plasmid-borne cpe-carrying Clostridium perfringens type A. PLoS One 2012; 7:e46162. [PMID: 23094024 PMCID: PMC3477167 DOI: 10.1371/journal.pone.0046162] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2012] [Accepted: 08/30/2012] [Indexed: 11/20/2022] Open
Abstract
Clostridium perfringens, one of the most common causes of food poisonings, can carry the enterotoxin gene, cpe, in its chromosome or on a plasmid. C. perfringens food poisonings are more frequently caused by the chromosomal cpe-carrying strains, while the plasmid-borne cpe-positive genotypes are more commonly found in the human feces and environmental samples. Different tolerance to food processing conditions by the plasmid-borne and chromosomal cpe-carrying strains has been reported, but the reservoirs and contamination routes of enterotoxin-producing C. perfringens remain unknown. A comparative genomic hybridization (CGH) analysis with a DNA microarray based on three C. perfringens type A genomes was conducted to shed light on the epidemiology of C. perfringens food poisonings caused by plasmid-borne and chromosomal cpe-carrying strains by comparing chromosomal and plasmid-borne cpe-positive and cpe-negative C. perfringens isolates from human, animal, environmental, and food samples. The chromosomal and plasmid-borne cpe-positive C. perfringens genotypes formed two distinct clusters. Variable genes were involved with myo-inositol, ethanolamine and cellobiose metabolism, suggesting a new epidemiological model for C. perfringens food poisonings. The CGH results were complemented with growth studies, which demonstrated different myo-inositol, ethanolamine, and cellobiose metabolism between the chromosomal and plasmid-borne cpe-carrying strains. These findings support a ubiquitous occurrence of the plasmid-borne cpe-positive strains and their adaptation to the mammalian intestine, whereas the chromosomal cpe-positive strains appear to have a narrow niche in environments containing degrading plant material. Thus the epidemiology of the food poisonings caused by two populations appears different, the plasmid-borne cpe-positive strains probably contaminating foods via humans and the chromosomal strains being connected to plant material.
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Affiliation(s)
- Päivi Lahti
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland.
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Rittmann S, Herwig C. A comprehensive and quantitative review of dark fermentative biohydrogen production. Microb Cell Fact 2012; 11:115. [PMID: 22925149 PMCID: PMC3443015 DOI: 10.1186/1475-2859-11-115] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2012] [Accepted: 08/03/2012] [Indexed: 01/25/2023] Open
Abstract
Biohydrogen production (BHP) can be achieved by direct or indirect biophotolysis, photo-fermentation and dark fermentation, whereof only the latter does not require the input of light energy. Our motivation to compile this review was to quantify and comprehensively report strains and process performance of dark fermentative BHP. This review summarizes the work done on pure and defined co-culture dark fermentative BHP since the year 1901. Qualitative growth characteristics and quantitative normalized results of H2 production for more than 2000 conditions are presented in a normalized and therefore comparable format to the scientific community.Statistically based evidence shows that thermophilic strains comprise high substrate conversion efficiency, but mesophilic strains achieve high volumetric productivity. Moreover, microbes of Thermoanaerobacterales (Family III) have to be preferred when aiming to achieve high substrate conversion efficiency in comparison to the families Clostridiaceae and Enterobacteriaceae. The limited number of results available on dark fermentative BHP from fed-batch cultivations indicates the yet underestimated potential of this bioprocessing application. A Design of Experiments strategy should be preferred for efficient bioprocess development and optimization of BHP aiming at improving medium, cultivation conditions and revealing inhibitory effects. This will enable comparing and optimizing strains and processes independent of initial conditions and scale.
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Affiliation(s)
- Simon Rittmann
- Institute of Chemical Engineering, Research Area Biochemical Engineering, Gumpendorferstraße 1a, Vienna University of Technology, Vienna, 1060, Austria
| | - Christoph Herwig
- Institute of Chemical Engineering, Research Area Biochemical Engineering, Gumpendorferstraße 1a, Vienna University of Technology, Vienna, 1060, Austria
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Kaushik A, Mona S, Kaushik CP. Integrating photobiological hydrogen production with dye-metal bioremoval from simulated textile wastewater. BIORESOURCE TECHNOLOGY 2011; 102:9957-9964. [PMID: 21890340 DOI: 10.1016/j.biortech.2011.08.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2011] [Revised: 08/01/2011] [Accepted: 08/02/2011] [Indexed: 05/31/2023]
Abstract
The study reports production of hydrogen in photobioreactors with free (PBR(Fr)) and immobilized (PBR(Imm)) Nostoc biomass at enhanced and sustained rates. Before running the photobioreactors, effects of different immobilization matrices and cyanobacterial dose on hydrogen production were studied in batch mode. As hydrogen production in the PBRs declined spent biomass from the photobioreactors were collected and utilized further for column biosorption of highly toxic dyes (Reactive Red 198+Crystal Violet) and metals (hexavalent chromium and bivalent cobalt) from simulated textile wastewater. Breakthrough time, adsorption capacity and exhaustion time of the biosorption column were studied. The photobioreactors with free and immobilized cyanobacterium produced hydrogen at average rates of 101 and 151 μmol/h/mg Chl a, respectively over 15 days, while the adsorption capacity of the spent biomass was up to 1.4 and 0.23 mg/g for metals and 15 and 1.75 mg/g for the dyes, respectively in continuous column mode.
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Affiliation(s)
- Anubha Kaushik
- Department of Environmental Science and Engineering, Guru Jambheshwar University of Science & Technology, Hisar 125001, India
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