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Kim G, Yang H, Lee J, Cho KS. Comparative analysis of hydrogen production and bacterial communities in mesophilic and thermophilic consortia using multiple inoculum sources. CHEMOSPHERE 2024; 350:141144. [PMID: 38190944 DOI: 10.1016/j.chemosphere.2024.141144] [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: 11/27/2023] [Revised: 01/04/2024] [Accepted: 01/05/2024] [Indexed: 01/10/2024]
Abstract
This study investigates the hydrogen (H2) production performance and bacterial communities in mesophilic (37 °C) and thermophilic (50 °C) H2-producing consortia derived from different inoculum sources and utilizing food waste as a substrate. This study found notable variations in H2 production characteristics among these consortia. Among the mesophilic consortia (MC), the W-MC obtained with wetland (W) as the inoculum source exhibited the highest hydrogen production (3900 mL·L-1 and 117 mL·L-1·h-1), while among the thermophilic consortia (TC), the FP-TC obtained with forest puddle sediment (FP) as the inoculum source showed the highest performance (2112 mL·L-1 and 127 mL·L-1·h-1). This study reveals that the choice of inoculum source plays a crucial role in determining hydrogen production efficiency. Furthermore, the bacterial community analysis demonstrated varying microbial diversity and richness in different inoculum sources. Clostridium, a well-known H2-producing bacterium, was found in both mesophilic and thermophilic consortia and showed a positive correlation with H2 production. Other bacteria, such as Sporanaerobacter, Caproiciproducens, and Caldibacillus, also exhibited significant correlations with H2 production, suggesting their potential roles in the process. The study highlights the complex interactions between bacterial communities and hydrogen production performance, shedding light on the critical factors influencing this renewable energy source. Overall, this study contributes to our understanding of the microbial ecology and the factors affecting hydrogen production in different temperature conditions, which can have practical implications for optimizing biohydrogen production processes using organic waste substrates.
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Affiliation(s)
- Geunhee Kim
- Department of Environmental Science and Engineering, Ewha Womans University, Seoul, 03760, Republic of Korea.
| | - Hyoju Yang
- Department of Environmental Science and Engineering, Ewha Womans University, Seoul, 03760, Republic of Korea
| | - Jiho Lee
- Department of Environmental Science and Engineering, Ewha Womans University, Seoul, 03760, Republic of Korea
| | - Kyung-Suk Cho
- Department of Environmental Science and Engineering, Ewha Womans University, Seoul, 03760, Republic of Korea.
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Mehariya S, Patel AK, Obulisamy PK, Punniyakotti E, Wong JWC. Co-digestion of food waste and sewage sludge for methane production: Current status and perspective. BIORESOURCE TECHNOLOGY 2018; 265:519-531. [PMID: 29861300 DOI: 10.1016/j.biortech.2018.04.030] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Revised: 04/06/2018] [Accepted: 04/07/2018] [Indexed: 05/24/2023]
Abstract
Food waste (FW) is a valuable resource which requires sustainable management avenues to reduce the hazardous environmental impacts and add-value for better economy. Anaerobic digestion (AD) is still reliable, cost-effective technology for waste management. Conventional AD was originally designed for sewer sludge digestion, is not effective for FW due to mainly high organics and volatile fatty acid (VFA) accumulation, hence better technical aptitudes and biochemical inputs are required for optimal biogas production. Besides, to overcome these challenges, FW co-digestion with complementary organic waste e.g. sewage sludge (SS) mixed which complement each other for better process design. The main aim of this article is to summarize the recent updates and review different holistic approaches for efficient anaerobic co-digestion (AcoD) of FW and SS to provide a comprehensive review on the topic. Moreover, to demonstrate the status and perspectives of AcoD at present scenario for Hong Kong and rest of the world.
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Affiliation(s)
- Sanjeet Mehariya
- Sino-Forest Applied Research Centre for Pearl River Delta Environment, Department of Biology, Hong Kong Baptist University, Kowloon Tong, Hong Kong Special Administrative Region
| | - Anil Kumar Patel
- Institute of Bioresource and Agriculture, Department of Biology, Hong Kong Baptist University, Kowloon Tong, Hong Kong Special Administrative Region
| | - Parthiba Karthikeyan Obulisamy
- Sino-Forest Applied Research Centre for Pearl River Delta Environment, Department of Biology, Hong Kong Baptist University, Kowloon Tong, Hong Kong Special Administrative Region
| | - Elumalai Punniyakotti
- Sino-Forest Applied Research Centre for Pearl River Delta Environment, Department of Biology, Hong Kong Baptist University, Kowloon Tong, Hong Kong Special Administrative Region
| | - Jonathan W C Wong
- Sino-Forest Applied Research Centre for Pearl River Delta Environment, Department of Biology, Hong Kong Baptist University, Kowloon Tong, Hong Kong Special Administrative Region; Institute of Bioresource and Agriculture, Department of Biology, Hong Kong Baptist University, Kowloon Tong, Hong Kong Special Administrative Region.
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He S, Fan X, Katukuri NR, Yuan X, Wang F, Guo RB. Enhanced methane production from microalgal biomass by anaerobic bio-pretreatment. BIORESOURCE TECHNOLOGY 2016; 204:145-151. [PMID: 26773949 DOI: 10.1016/j.biortech.2015.12.073] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Revised: 12/22/2015] [Accepted: 12/23/2015] [Indexed: 06/05/2023]
Abstract
Anaerobic digestion (AD) of microalgal biomass is one of the most energy efficient technologies to convert microalgae to biofuels. In order to improve the biogas productivity, breaking up the tough and rigid cell wall of microalgae by pretreatment is necessary. In this work, Bacillus licheniformis, a facultative anaerobic bacterial with hydrolytic and acidogenic activities, was adopted to pretreat Chlorella sp. In the established pretreatment process, pure bacterial culture (0%, 1%, 2%, 4%, 8%, v/v) were used to pretreat Chlorella sp. under anaerobic condition at 37°C for 60 h. The soluble chemical oxygen demands (SCOD) content was increased by 16.4-43.4%, while volatile fatty acids (VFAs) were improved by 17.3-44.2%. Furthermore, enhancement of methane production (9.2-22.7%) was also observed in subsequent AD. The results indicated that the more dosages of bacteria were used to pretreat the microalgal biomass in the range of 1-8%, the more methane was produced.
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Affiliation(s)
- Shuai He
- Shandong Industrial Engineering Laboratory of Biogas Production & Utilization, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, Shandong Province 266101, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Xiaolei Fan
- Shandong Industrial Engineering Laboratory of Biogas Production & Utilization, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, Shandong Province 266101, PR China
| | - Naveen Reddy Katukuri
- Shandong Industrial Engineering Laboratory of Biogas Production & Utilization, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, Shandong Province 266101, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Xianzheng Yuan
- Shandong Industrial Engineering Laboratory of Biogas Production & Utilization, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, Shandong Province 266101, PR China
| | - Fei Wang
- Shandong Industrial Engineering Laboratory of Biogas Production & Utilization, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, Shandong Province 266101, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Rong-Bo Guo
- Shandong Industrial Engineering Laboratory of Biogas Production & Utilization, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, Shandong Province 266101, PR China.
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Impact of pH Management Interval on Biohydrogen Production from Organic Fraction of Municipal Solid Wastes by Mesophilic Thermophilic Anaerobic Codigestion. BIOMED RESEARCH INTERNATIONAL 2015; 2015:590753. [PMID: 26819952 PMCID: PMC4706864 DOI: 10.1155/2015/590753] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Revised: 11/16/2015] [Accepted: 12/02/2015] [Indexed: 02/04/2023]
Abstract
The biohydrogen productions from the organic fraction of municipal solid wastes (OFMSW) were studied under pH management intervals of 12 h (PM12) and 24 h (PM24) for temperature of 37 ± 0.1°C and 55 ± 0.1°C. The OFMSW or food waste (FW) along with its two components, noodle waste (NW) and rice waste (RW), was codigested with sludge to estimate the potential of biohydrogen production. The biohydrogen production was higher in all reactors under PM12 as compared to PM24. The drop in pH from 7 to 5.3 was observed to be appropriate for biohydrogen production via mesophilic codigestion of noodle waste with the highest biohydrogen yield of 145.93 mL/g CODremoved under PM12. When the temperature was increased from 37°C to 55°C and pH management interval was reduced from 24 h to 12 h, the biohydrogen yields were also changed from 39.21 mL/g CODremoved to 89.67 mL/g CODremoved, 91.77 mL/g CODremoved to 145.93 mL/g CODremoved, and 15.36 mL/g CODremoved to 117.62 mL/g CODremoved for FW, NW, and RW, respectively. The drop in pH and VFA production was better controlled under PM12 as compared to PM24. Overall, PM12 was found to be an effective mean for biohydrogen production through anaerobic digestion of food waste.
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van Aarle IM, Perimenis A, Lima-Ramos J, de Hults E, George IF, Gerin PA. Mixed inoculum origin and lignocellulosic substrate type both influence the production of volatile fatty acids during acidogenic fermentation. Biochem Eng J 2015. [DOI: 10.1016/j.bej.2015.07.016] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Gupta M, Gomez-Flores M, Nasr N, Elbeshbishy E, Hafez H, Hesham El Naggar M, Nakhla G. Performance of mesophilic biohydrogen-producing cultures at thermophilic conditions. BIORESOURCE TECHNOLOGY 2015; 192:741-7. [PMID: 26101964 DOI: 10.1016/j.biortech.2015.06.047] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Revised: 06/08/2015] [Accepted: 06/10/2015] [Indexed: 05/25/2023]
Abstract
In this study, batch tests were conducted to investigate the performance of mesophilic anaerobic digester sludge (ADS) at thermophilic conditions and estimate kinetic parameters for co-substrate fermentation. Starch and cellulose were used as mono-substrate and in combination as co-substrates (1:1 mass ratio) to conduct a comparative assessment between mesophilic (37 °C) and thermophilic (60 °C) biohydrogen production. Unacclimatized mesophilic ADS responded well to the temperature change. The highest hydrogen yield of 1.13 mol H2/mol hexose was observed in starch-only batches at thermophilic conditions. The thermophilic cellulose-only yield (0.42 mol H2/mol hexose) was three times the mesophilic yield (0.13 mol H2/mol hexose). Interestingly, co-fermentation of starch-cellulose at mesophilic conditions enhanced the hydrogen yield by 26% with respect to estimated mono-substrate yields, while under thermophilic conditions no enhancement in the overall yield was observed. Interestingly, the estimated overall Monod kinetic parameters showed higher rates at mesophilic than thermophilic conditions.
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Affiliation(s)
- Medhavi Gupta
- Department of Chemical and Biochemical Engineering, Western University, London, Ontario N6A 5B9, Canada
| | - Maritza Gomez-Flores
- Department of Chemical and Biochemical Engineering, Western University, London, Ontario N6A 5B9, Canada
| | - Noha Nasr
- Department of Civil and Environmental Engineering, Western University, London, Ontario N6A 5B9, Canada
| | - Elsayed Elbeshbishy
- Department of Civil and Environmental Engineering, Western University, London, Ontario N6A 5B9, Canada
| | - Hisham Hafez
- Department of Civil and Environmental Engineering, Western University, London, Ontario N6A 5B9, Canada; GreenField Ethanol Inc., Chatham, Ontario N7M 5J4, Canada
| | - M Hesham El Naggar
- Department of Civil and Environmental Engineering, Western University, London, Ontario N6A 5B9, Canada
| | - George Nakhla
- Department of Chemical and Biochemical Engineering, Western University, London, Ontario N6A 5B9, Canada; Department of Civil and Environmental Engineering, Western University, London, Ontario N6A 5B9, Canada.
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Zheng H, Zeng RJ, Duke MC, O'Sullivan CA, Clarke WP. Changes in glucose fermentation pathways by an enriched bacterial culture in response to regulated dissolved H2 concentrations. Biotechnol Bioeng 2015; 112:1177-86. [PMID: 25545692 DOI: 10.1002/bit.25525] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2014] [Accepted: 12/15/2014] [Indexed: 11/10/2022]
Abstract
It is well established that metabolic pathways in the fermentation of organic waste are primarily controlled by dissolved H2 concentrations, but there is no reported study that compares observed and predicted shifts in fermentation pathways induced by manipulating the dissolved H2 concentration. A perfusion system is presented that was developed to control dissolved H2 concentrations in the continuous fermentation of glucose by a culture highly enriched towards Thermoanaerobacterium thermosaccharolyticum (86 ± 9% relative abundance) from an originally diverse consortia in the leachate of a laboratory digester fed with municipal solid waste. Media from a 2.5 L CSTR was drawn through sintered steel membrane filters to retain biomass, allowing vigorous sparging in a separate chamber without cellular disruption. Through a combination of sparging and variations in glucose feeding rate from 0.8 to 0.2 g/L/d, a range of steady state fermentations were performed with dissolved H2 concentrations as low as an equivalent equilibrated H2 partial pressure of 3 kPa. Trends in product formation rates were simulated using a H2 regulation partitioning model. The model correctly predicted the direction of products redistribution in response to H2 concentration changes and the acetate and butyrate formation rates when H2 concentrations were less than 6 kPa. However, the model over-estimated acetate, ethanol and butanol productions at the expense of butyrate production at higher H2 concentrations. The H2 yield at the lowest dissolved H2 concentration was 2.67 ± 0.08 mol H2 /mol glucose, over 300% higher than the yield achieved in a CSTR operated without sparging.
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Affiliation(s)
- Hang Zheng
- Centre for Solid Waste Bio-Processing, Schools of Civil and Chemical Engineering, The University of Queensland, Brisbane, 4072, Queensland, Australia
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Anzola-Rojas MDP, Gonçalves da Fonseca S, Canedo da Silva C, Maia de Oliveira V, Zaiat M. The use of the carbon/nitrogen ratio and specific organic loading rate as tools for improving biohydrogen production in fixed-bed reactors. ACTA ACUST UNITED AC 2014. [PMID: 28626682 PMCID: PMC5466190 DOI: 10.1016/j.btre.2014.10.010] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The effects of the carbon/nitrogen ratios of 40, 90, 140, and 190 on hydrogen production are evaluated by varying the nitrogen source in an upflow fixed-bed anaerobic reactor. An optimal C/N ratio of 137 to produce 3.5 mol H2 mol−1 sucrose is estimated by a mathematical approximation. Continuous decreases in the specific organic loading rate as a function of time seemed to be responsible for the instability of the system. A microbial biology analysis identified hydrogen-producing and -consuming microorganisms from natural inoculum.
This study assessed the effect of the carbon/nitrogen (C/N) ratio on the hydrogen production from sucrose-based synthetic wastewater in upflow fixed-bed anaerobic reactors. C/N ratios of 40, 90, 140, and 190 (g C/g N) were studied using sucrose and urea as the carbon and nitrogen sources, respectively. An optimum hydrogen yield of 3.5 mol H2 mol−1 sucrose was obtained for a C/N ratio of 137 by means of mathematical adjustment. For all C/N ratios, the sucrose removal efficiency reached values greater than 80% and was stable after the transient stage. However, biogas production was not stable at all C/N ratios as a consequence of the continuous decreasing of the specific organic loading rate (SOLR) when the biomass accumulated in the fixed-bed, causing the proliferation of H2-consuming microorganisms. It was found that the application of a constant SOLR of 6.0 g sucrose g−1 VSS d−1 stabilized the system.
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Affiliation(s)
- Mélida Del Pilar Anzola-Rojas
- Laboratory of Biological Processes, Center for Research, Development and Innovation in Environmental Engineering, São Carlos School of Engineering, University of São Paulo 1100, João Dagnone Ave., Santa Angelina, 13563-120 São Carlos, São Paulo, Brazil
| | - Samantha Gonçalves da Fonseca
- Microbial Resources Division, Research Center for Chemistry, Biology and Agriculture (CPQBA), Campinas University, CP 6171, CEP 13081-970 Campinas, São Paulo, Brazil
| | - Cynthia Canedo da Silva
- Microbial Resources Division, Research Center for Chemistry, Biology and Agriculture (CPQBA), Campinas University, CP 6171, CEP 13081-970 Campinas, São Paulo, Brazil
| | - Valeria Maia de Oliveira
- Microbial Resources Division, Research Center for Chemistry, Biology and Agriculture (CPQBA), Campinas University, CP 6171, CEP 13081-970 Campinas, São Paulo, Brazil
| | - Marcelo Zaiat
- Laboratory of Biological Processes, Center for Research, Development and Innovation in Environmental Engineering, São Carlos School of Engineering, University of São Paulo 1100, João Dagnone Ave., Santa Angelina, 13563-120 São Carlos, São Paulo, Brazil
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Santos SC, Rosa PRF, Sakamoto IK, Varesche MBA, Silva EL. Organic loading rate impact on biohydrogen production and microbial communities at anaerobic fluidized thermophilic bed reactors treating sugarcane stillage. BIORESOURCE TECHNOLOGY 2014; 159:55-63. [PMID: 24632626 DOI: 10.1016/j.biortech.2014.02.051] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2013] [Revised: 02/10/2014] [Accepted: 02/14/2014] [Indexed: 06/03/2023]
Abstract
This study aimed to evaluate the effect of high organic loading rates (OLR) (60.0-480.00 kg COD m(-3)d(-1)) on biohydrogen production at 55°C, from sugarcane stillage for 15,000 and 20,000 mg CODL(-1), in two anaerobic fluidized bed reactors (AFBR1 and AFBR2). It was obtained, for H2 yield and content, a decreasing trend by increasing the OLR. The maximum H2 yield was observed in AFBR1 (2.23 mmol g COD added(-1)). The volumetric H2 production was proportionally related to the applied hydraulic retention time (HRT) of 6, 4, 2 and 1h and verified in AFBR1 the highest value (1.49 L H2 h(-1)L(-1)). Among the organic acids obtained, there was a predominance of lactic acid (7.5-22.5%) and butyric acid (9.4-23.8%). The microbial population was set with hydrogen-producing fermenters (Megasphaera sp.) and other organisms (Lactobacillus sp.).
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Affiliation(s)
- Samantha Christine Santos
- Department of Hydraulic and Sanitation, University of São Paulo, Av. Trabalhador Sãocarlense, 400, Centro, CEP 13566-590, São Carlos, SP, Brazil
| | - Paula Rúbia Ferreira Rosa
- Department of Chemical Engineering, Federal University of São Carlos, Rod. Washington Luis, km 235, CEP 13565-905, São Carlos, SP, Brazil
| | - Isabel Kimiko Sakamoto
- Department of Hydraulic and Sanitation, University of São Paulo, Av. Trabalhador Sãocarlense, 400, Centro, CEP 13566-590, São Carlos, SP, Brazil
| | - Maria Bernadete Amâncio Varesche
- Department of Hydraulic and Sanitation, University of São Paulo, Av. Trabalhador Sãocarlense, 400, Centro, CEP 13566-590, São Carlos, SP, Brazil
| | - Edson Luiz Silva
- Department of Chemical Engineering, Federal University of São Carlos, Rod. Washington Luis, km 235, CEP 13565-905, São Carlos, SP, Brazil.
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Lü F, Ji J, Shao L, He P. Bacterial bioaugmentation for improving methane and hydrogen production from microalgae. BIOTECHNOLOGY FOR BIOFUELS 2013; 6:92. [PMID: 23815806 PMCID: PMC3699423 DOI: 10.1186/1754-6834-6-92] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2013] [Accepted: 06/26/2013] [Indexed: 05/04/2023]
Abstract
BACKGROUND The recalcitrant cell walls of microalgae may limit their digestibility for bioenergy production. Considering that cellulose contributes to the cell wall recalcitrance of the microalgae Chlorella vulgaris, this study investigated bioaugmentation with a cellulolytic and hydrogenogenic bacterium, Clostridium thermocellum, at different inoculum ratios as a possible method to improve CH4 and H2 production of microalgae. RESULTS Methane production was found to increase by 17?~?24% with the addition of C. thermocellum, as a result of enhanced cell disruption and excess hydrogen production. Furthermore, addition of C. thermocellum enhanced the bacterial diversity and quantities, leading to higher fermentation efficiency. A two-step process of addition of C. thermocellum first and methanogenic sludge subsequently could recover both hydrogen and methane, with a 9.4% increase in bioenergy yield, when compared with the one-step process of simultaneous addition of C. thermocellum and methanogenic sludge. The fluorescence peaks of excitation-emission matrix spectra associated with chlorophyll can serve as biomarkers for algal cell degradation. CONCLUSIONS Bioaugmentation with C. thermocellum improved the degradation of C. vulgaris biomass, producing higher levels of methane and hydrogen. The two-step process, with methanogenic inoculum added after the hydrogen production reached saturation, was found to be an energy-efficiency method for hydrogen and methane production.
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Affiliation(s)
- Fan Lü
- State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, China
| | - Jiaqi Ji
- State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, China
| | - Liming Shao
- Centre for the Technology Research and Training on Household Waste in Small Towns & Rural Area, Ministry of Housing and Urban–rural Development of PR. China (MOHURD), Beijing, China
| | - Pinjing He
- State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, China
- Institute of Waste Treatment and Reclamation, Tongji University, Shanghai 200092, China
- Centre for the Technology Research and Training on Household Waste in Small Towns & Rural Area, Ministry of Housing and Urban–rural Development of PR. China (MOHURD), Beijing, China
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Hydrogen-producing microflora and Fe-Fe hydrogenase diversities in seaweed bed associated with marine hot springs of Kalianda, Indonesia. Curr Microbiol 2013; 66:499-506. [PMID: 23325032 DOI: 10.1007/s00284-013-0302-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2012] [Accepted: 12/18/2012] [Indexed: 10/27/2022]
Abstract
Microbial fermentation is a promising technology for hydrogen (H(2)) production. H(2) producers in marine geothermal environments are thermophilic and halotolerant. However, no one has surveyed an environment specifically for thermophilic bacteria that produce H(2) through Fe-Fe hydrogenases (H(2)ase). Using heterotrophic medium, several microflora from a seaweed bed associated with marine hot springs were enriched and analyzed for H(2) production. A H(2)-producing microflora was obtained from Sargassum sp., 16S rRNA genes and Fe-Fe H(2)ase diversities of this enrichment were also analyzed. Based on 16S rRNA genes analysis, 10 phylotypes were found in the H(2)-producing microflora showing 90.0-99.5 % identities to known species, and belonged to Clostridia, Gammaproteobacteria, and Bacillales. Clostridia were the most abundant group, and three Clostridia phylotypes were most related to known H(2) producers such as Anaerovorax odorimutans (94.0 % identity), Clostridium papyrosolvens (98.4 % identity), and Clostridium tepidiprofundi (93.1 % identity). For Fe-Fe H(2)ases, seven phylotypes were obtained, showing 63-97 % identities to known Fe-Fe H(2)ases, and fell into four distinct clusters. Phylotypes HW55-3 and HM55-1 belonged to thermophilic and salt-tolerant H(2)-producing Clostridia, Halothermothrix orenii-like Fe-Fe H(2)ases (80 % identity), and cellulolytic H(2)-producing Clostridia, C. papyrosolvens-like Fe-Fe H(2)ases (97 % identity), respectively. The results of both 16S rRNA genes and Fe-Fe H(2)ases surveys suggested that the thermophilic and halotolerant H(2)-producing microflora in seaweed bed of hot spring area represented previously unknown H(2) producers, and have potential application for H(2) production.
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Kargi F, Eren NS, Ozmihci S. Effect of initial bacteria concentration on hydrogen gas production from cheese whey powder solution by thermophilic dark fermentation. Biotechnol Prog 2012; 28:931-6. [DOI: 10.1002/btpr.1558] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2012] [Revised: 04/25/2012] [Indexed: 11/10/2022]
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Characterization and cloning of oxygen-tolerant hydrogenase from Klebsiella oxytoca HP1. Res Microbiol 2011; 162:330-6. [DOI: 10.1016/j.resmic.2010.12.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2010] [Accepted: 10/29/2010] [Indexed: 11/18/2022]
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Moreno-Dav IM, Rios-Gonza LJ, Gaona-Loza JG, Garza-Garc Y, Rodriguez- JA, Rodriguez- J. Biohydrogen Production by Anaerobic Biofilms from a Pretreated Mixed Microflora. ACTA ACUST UNITED AC 2010. [DOI: 10.3923/rjasci.2010.376.382] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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15
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Impact of alkali and heat pretreatment on the pathway of hydrogen production from sewage sludge. ACTA ACUST UNITED AC 2010. [DOI: 10.1007/s11434-009-0591-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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García-Peña EI, Guerrero-Barajas C, Ramirez D, Arriaga-Hurtado LG. Semi-continuous biohydrogen production as an approach to generate electricity. BIORESOURCE TECHNOLOGY 2009; 100:6369-6377. [PMID: 19683440 DOI: 10.1016/j.biortech.2009.07.033] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2009] [Revised: 07/14/2009] [Accepted: 07/17/2009] [Indexed: 05/28/2023]
Abstract
In this work, a semi-continuous biological system was established to produce hydrogen and generate electricity by coupling the bioreactor to a fuel cell. Heat and acid pretreatments (at 35 and 55 degrees C) of a seed sludge used as inoculum were performed in order to increase hydrogen producers. Different initial glucose concentrations (IGC) were tested for heat pretreated inoculum at 35 degrees C to determine the optimum concentration of glucose that supported the highest hydrogen production. Results showed that the heat pretreated inoculums (35 degrees C) reached the highest hydrogen molar yield of 2.85 mol H(2)/mol glucose (0.014 L/h), which corresponds to the acetic acid pathway. At the optimum IGC (10 g/L, 35 degrees C) the hydrogen molar yield was 3.6 mol H(2)/mol glucose (0.023 L/h). The coupled bioreactor-fuel cell system yielded an output voltage of 1.06 V, power of 0.1 W (25 degrees C) and a current of 68 mA. The overall results suggest that high hydrogen molar yields can be obtained through the acetic acid pathway and that is feasible to generate electricity using hydrogen from the semi-continuous bioreactor.
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Affiliation(s)
- E I García-Peña
- Bioprocesses Department, Unidad Profesional Interdisciplinaria de Biotecnología-IPN, Av., Acueducto s/n. P.O. Box 07340, DF, Mexico.
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Karadag D, Mäkinen AE, Efimova E, Puhakka JA. Thermophilic biohydrogen production by an anaerobic heat treated-hot spring culture. BIORESOURCE TECHNOLOGY 2009; 100:5790-5795. [PMID: 19592235 DOI: 10.1016/j.biortech.2009.06.035] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2009] [Revised: 06/09/2009] [Accepted: 06/10/2009] [Indexed: 05/28/2023]
Abstract
Batch experiments were conducted to investigate the thermophilic biohydrogen production using an enrichment culture from a Turkish hot spring. Following the enrichment, the culture was heat treated at 100 degrees C for 10 min to select for spore-forming bacteria. H(2) production was accompanied by production of acetate, butyrate, lactate and ethanol. H(2) production was associated by acetate-butyrate type fermentation while accumulation of lactate and ethanol negatively affected the H(2) yield. H(2) production was highest in the temperature range from 49.6 to 54.8 degrees C and optimum values for initial pH and concentrations of iron, yeast extract and glucose were 6.5, 40 mg/l, 4-13.5 g/l, respectively. PCR-DGGE profiling showed that the heat treated culture consisted of species closely affiliated to genus Thermoanaerobacterium.
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Affiliation(s)
- Dogan Karadag
- Tampere University of Technology, Department of Chemistry and Bioengineering, Tampere, Finland.
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Venkata Mohan S, Mohanakrishna G, Goud RK, Sarma PN. Acidogenic fermentation of vegetable based market waste to harness biohydrogen with simultaneous stabilization. BIORESOURCE TECHNOLOGY 2009; 100:3061-3068. [PMID: 19230653 DOI: 10.1016/j.biortech.2008.12.059] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2008] [Revised: 12/30/2008] [Accepted: 12/31/2008] [Indexed: 05/27/2023]
Abstract
Vegetable based market waste was evaluated as a fermentable substrate for hydrogen (H(2)) production with simultaneous stabilization by dark-fermentation process using selectively enriched acidogenic mixed consortia under acidophilic microenvironment. Experiments were performed at different substrate/organic loading conditions in concurrence with two types of feed compositions (with and without pulp). Study depicted the feasibility of H(2) production from vegetable waste stabilization process. H(2) production was found to be dependent on the concentration of the substrate and composition. Higher H(2) production and substrate degradation were observed in experiments performed without pulp (23.96 mmol/day (30.0 kg COD/m(3)); 13.96 mol/kg COD(R) (4.8 kg COD/m(3))) than with pulp (22.46 mmol/day (32.0 kg COD/m(3)); 12.24 mol/kg COD(R) (4.4 kg COD/m(3))). Generation of higher concentrations of acetic acid and butyric acid was observed in experiments performed without pulp. Data enveloping analysis (DEA) was employed to study the combined process efficiency of system by integrating H(2) production and substrate degradation.
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Affiliation(s)
- S Venkata Mohan
- Bioengineering and Environmental Centre, Indian Institute of Chemical Technology, Hyderabad, AP 500 007, India.
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Nazlina H, Aini AN, Ismail F, Yusof M, Hassan M. Effect of Different Temperature, Initial pH and Substrate Composition on Biohydrogen Production from Food Waste in Batch Fermentation. ACTA ACUST UNITED AC 2009. [DOI: 10.3923/ajbkr.2009.42.50] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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20
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O-Thong S, Prasertsan P, Birkeland NK. Evaluation of methods for preparing hydrogen-producing seed inocula under thermophilic condition by process performance and microbial community analysis. BIORESOURCE TECHNOLOGY 2009; 100:909-18. [PMID: 18768309 DOI: 10.1016/j.biortech.2008.07.036] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2008] [Revised: 07/17/2008] [Accepted: 07/19/2008] [Indexed: 05/08/2023]
Abstract
Five methods for preparation of hydrogen-producing seeds (base, acid, 2-bromoethanesulfonic acid (BESA), load-shock and heat shock treatments) as well as an untreated anaerobic digested sludge were compared for their hydrogen production performance and responsible microbial community structures under thermophilic condition (60 degrees C). The results showed that the load-shock treatment method was the best for enriching thermophilic hydrogen-producing seeds from mixed anaerobic cultures as it completely repressed methanogenic activity and gave the a maximum hydrogen production yield of 1.96 mol H(2) mol(-1) hexose with an hydrogen production rate of 11.2 mmol H(2) l(-1)h(-1). Load-shock and heat-shock treatments resulted in a dominance of Thermoanaerobacterium thermosaccharolyticum with acetic acid and butyric acid type of fermentation while base- and acid-treated seeds were dominated by Clostridium sp. and BESA-treated seeds were dominated by Bacillus sp. The comparative experimental results from hydrogen production performance and microbial community analysis showed that the load-shock treatment method was better than the other four methods for enriching thermophilic hydrogen-producing seeds from anaerobic digested sludge. Load-shock treated sludge was implemented in palm oil mill effluent (POME) fermentation and was found to give maximum hydrogen production rates of 13.34 mmol H(2) l(-1)h(-1) and resulted in a dominance of Thermoanaerobacterium spp. Load-shock treatment is an easy and practical method for enriching thermophilic hydrogen-producing bacteria from anaerobic digested sludge.
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Affiliation(s)
- Sompong O-Thong
- Department of Biology, Faculty of Science, Thaksin University, Patthalung 93110, Thailand
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21
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Calli B, Chung LC, Arslan D, Vanbroekhoven K. H2 production potential in thermophilic mixed fermentation. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2009; 44:78-86. [PMID: 19085598 DOI: 10.1080/10934520802515418] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The effect of pH on dark fermentative H(2) production at 55 degrees C was studied using three different inocula namely windrow yard waste compost (G), anaerobic organic waste compost (H) and activated sludge (A) and 2 g/L glucose as substrate. The sequential batch experiments were performed by controlling the pH at 5, 5.5 and 6. The highest molar H(2) yields were found to be 1.7 at pH 5 for G and H and 1.6 at pH 5.5 for A, while severe drops in the subsequent runs were associated with lactate fermentation. At pH 5.5 in G, despite the butyrate formation ceased, lower but more stable H(2) yields of about 1.1 were obtained through acetate-ethanol fermentation. Besides, the clostridial thermopiles prevalent at pH 5 were substituted by Thermoanaerobacterium-related species at pH 5.5 and 6. The findings suggested that for a stable H(2) yield through acetate-butyrate fermentation at 55 degrees C with compost inoculum G or H, the pH has to be controlled between pH 5 and 5.5. This is one of the few papers discussing the effects of pH on H(2) production through thermophilic mixed fermentation of glucose by using three different natural mixed culture inocula.
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Affiliation(s)
- Baris Calli
- Environmental Engineering Department, Faculty of Engineering, Marmara University, Goztepe, Istanbul, Turkey.
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Eberly JO, Ely RL. Thermotolerant hydrogenases: biological diversity, properties, and biotechnological applications. Crit Rev Microbiol 2008; 34:117-30. [PMID: 18728989 DOI: 10.1080/10408410802240893] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Hydrogenases are metalloproteins that catalyze the oxidation and reduction of molecular hydrogen and play a crucial role in many microbial metabolic processes. A subset of hydrogenases capable of functioning at temperatures from 50 to 125 degrees C is found in thermophilic microorganisms. Most known thermotolerant hydrogenases contain a [NiFe] active site and are either bidirectional or uptake type. Although no exhaustive survey has been done of the ecological diversity of thermophilic hydrogen-reducing or oxidizing bacteria, they appear to exist in virtually every thermophilic environment examined to date. Thermotolerant hydrogenases share many similarities with their mesophilic counterparts, but they have several features in addition to thermotolerance that make them especially well suited for biotechnological applications. Ongoing research is focused on potential applications of thermotolerant H2 ases in biosynthesis, H2 production, bioremediation, and biosensors.
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Affiliation(s)
- Jed O Eberly
- Department of Biological & Ecological Engineering, Oregon State University, Corvallis, Oregon 97331, USA
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Vijaya Bhaskar Y, Venkata Mohan S, Sarma PN. Effect of substrate loading rate of chemical wastewater on fermentative biohydrogen production in biofilm configured sequencing batch reactor. BIORESOURCE TECHNOLOGY 2008; 99:6941-6948. [PMID: 18291638 DOI: 10.1016/j.biortech.2008.01.029] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2007] [Revised: 01/09/2008] [Accepted: 01/11/2008] [Indexed: 05/25/2023]
Abstract
The influence of substrate loading rate on fermentative hydrogen (H2) production was studied in biofilm configured sequencing batch reactor using chemical wastewater as substrate. Reactor was operated with selectively enriched anaerobic mixed microflora at different organic loading rates (OLRs; 6.3, 7.1 and 7.9kg COD/m3 day) after adjusting the feed to a pH of 6.0 (acidophilic) to provide suitable environment for acidogenic bacterial function. Variation in H2 production rate was observed with change in OLR [specific hydrogen yield - 13.44molH2/kgCODRday (6.3kgCOD/m3day), 8.23molH2/kgCODRday (7.1kgCOD/m3 day) and 6.064molH2/kgCODR day (7.9kgCOD/m3 day)]. H2 yield showed reasonably good correlation with pH drop [6.3kgCOD/m3 day (R2 - 0.9796), 7.1kgCOD/m3 day (R2 - 0.9973), 7.9kgCOD/m3 day (R2 - 0.9908)]. Increase in OLR showed marked reduction in COD removal efficiency [22.6% - 6.3kgCOD/m3 day; 19.8% - 7.1kgCOD/m3 day and 17.2% - 7.9kgCOD/m3 day].
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Affiliation(s)
- Y Vijaya Bhaskar
- Bioengineering and Environmental Centre, Indian Institute of Chemical Technology, Hyderabad 500 007, India
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