Bioreactor and process design for biohydrogen production

Show, Kuan Yeow; Lee, Dong Hoon; Chang, Jo Shu

doi:10.1016/j.biortech.2011.04.055

Cited by 231 publications

(112 citation statements)

References 76 publications

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“…In a CSTR system, short HRTs are used to wash out the slow growing methanogens and select for the acid producing bacteria, while too high dilution rate corresponding to long HRTs could lead to inefficient hydrolysis of organic wastes. Nevertheless, bacterial cells washout under short hydraulic retention time (HRT) is a major problem associated with the CSTR, which leads to the process instability and inefficient hydrogen production [17]. So to have a reasonable HRT is important for CSTR operation.…”

Section: Influence Of Hrt For Fermentationmentioning

confidence: 99%

Pre-treatment of Yeast Production Wastewater and Hydrogen Production Based on MF-CSTR Process

Ding¹,

Jiang²,

Liu³

2016

IJEMA

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Abstract:Wastewater produced during the yeast production has high COD concentration, chroma and turbidity and it is difficult to dissolve the water, which has constrained the development of yeast industry. This thesis researched the process of pretreatment of wastewater from yeast production wastewater. Membrane filtering was introduced to hold back the yeast existed in the wastewater. The filtered water was sent to produce hydrogen in anaerobic environment, while the residue was sent to extract protein. The filtering process utilized the PVDF membrane with an aperture of 0.2µm can hold back the yeast sufficiently. According to the transmembrane pressure, 10days worked as a period to clean the membrane at the aeration of 0.15m 3 ·h -1. The cost as well as the profit is compared, which showed that for a yeast factory which had a daily wastewater production of 1 000m 3 , the profit could be as high as 1 090 yuan·d -1. Intermittent shake flask tests were conducted to study the difference of hydrogen production between direct anaerobic digestion and anaerobic digestion after filtration. When influent pH was 5.00, the hydrogen percentage of filtered group was 49.69%, which exceeded the group without filtration by 20.34%. The HRT and OLR were tested for CSTR to get the highest hydrogen production through anaerobic fermentation of the filtered yeast industry wastewater. Results showed that, when HRT was 8h and OLR was 24kgCOD·m , the system can get the highest biohydrogen production rate at 13.2L·d . This test suggested that MF-CSTR pretreatment process can simultaneously treat yeast industry wastewater effectively and realize resource recovery from yeast protein and energy recovery and utilization from hydrogen, which provides the theoretical foundation for the treatment and resource utilization from yeast industry wastewater.

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Section: Influence Of Hrt For Fermentationmentioning

confidence: 99%

Pre-treatment of Yeast Production Wastewater and Hydrogen Production Based on MF-CSTR Process

Ding¹,

Jiang²,

Liu³

2016

IJEMA

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“…There are many parameters affect hydrogen yield. However, the important ones are initial pH and operational temperature, since it directly influence bacterial growth, metabolic pathways and dominant species [2] . Moreover, there were reports about using iron and cell immobilization to increase hydrogen yield.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of biohydrogen production from starch processing wastewater and further inside its ecosystem disclosed by 16S rDNA sequencing and FISH

Sutthipattanasomboon

Wongthanate

2017

Braz. arch. biol. technol.

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Biohydrogen production from starch processing wastewater in this study resulted the highest yield of 61.75 mL H 2 /g COD at initial pH 7.0, thermophilic temperature, and iron concentration 800 mg Fe/L. The yield was 2-folded higher than the operation at mesophilic temperature or without iron addition. Cell immobilization by addition of biomaterials (BM) could improve the hydrogen yield by 2-folded comparing to the non-addition. BM from plants (loofa sponge) was found producing higher yield than that from animals (silk cocoon), and optimal concentration of BM was 5% (V/V). Furthermore, it was revealed further inside its ecosystem using SEM, 16S rDNA sequencing and FISH.There was found rod-shaped microorganisms of Bacillus cereus, which reported as efficient starch-utilizing hydrogen producers, was dominant in the system with population of 47% of all specie identified.

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Section: Introductionmentioning

confidence: 99%

“…By contrast, for local and smaller scale DF and some other opportunities, biohydrogen production processes would be cost competitive since the feedstocks are available almost anywhere and crucial interest is paid for both energy independence and efficient utilization [4,5]. However, optimization is still needed for DF regarding the bioreactor design, rapid removal and purification of gases, use of cheaper feedstock, genetic and molecular engineering to redirect metabolic pathway [6][7][8][9][10].Moreover, DF is only likely to be viable as an industrial process if integrated with a process that maximizes energy recovery from the fermentation end-products. The traditional methaneproducing anaerobic digestion process is the most promising since about 10 to 30 % more energy could be generated in the two-stage integrated system comparing to a single stage methanogenic process [11].…”

mentioning

confidence: 99%

Improvement of fermentative biohydrogen production by Clostridium butyricum CWBI1009 in sequenced-batch, horizontal fixed bed and biodisc-like anaerobic reactors with biomass retention

Hiligsmann

Beckers

Masset

et al. 2014

International Journal of Hydrogen Energy

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A horizontal tubular fixed bed bioreactor (HFBR) and an anaerobic biodisc-like reactor (AnBDR) were designed to both fix Clostridium biomass and enable rapid transfer of the hydrogen produced to gas phase in order to decrease the strong effect of H 2 partial pressure and H 2 supersaturation on the performances of Clostridium strains. The highest H 2 production rate (703 mL H 2 /L.h) and yield (302 mL/g glucose consumed i.e. 2.4 mol/mol) with the pure culture were recorded in the AnBDR with 300 mL culture medium (total volume 2.3 L) at pH 5.2 and a glucose loading rate of 2.87 g/L.h. These results are about 2.3 and 1.3-fold higher than those achieved in the same bioreactor with 500 mL liquid medium and with the same glucose consumption rate. Therefore, our experimentations and a short review of the literature reported in this paper emphasize the relevance of performing bioreactors with high L/G transfer.Keywords: Clostridium; hydrogen production; biofilm; bioreactor; pure strain CWBI -ULg 2/35 IntroductionThe fermentative production of hydrogen has drawn increased attention in recent years. This biological process called "dark fermentation" (DF) offers new opportunities to produce "green" energy from various renewable resources and organic wastes [1][2][3]. While significant improvements have been made in development of such alternative H 2 production systems, more technical progress and cost reduction needs to occur for them to compete with current large scale technologies e.g. methane-reforming process. By contrast, for local and smaller scale DF and some other opportunities, biohydrogen production processes would be cost competitive since the feedstocks are available almost anywhere and crucial interest is paid for both energy independence and efficient utilization [4,5]. However, optimization is still needed for DF regarding the bioreactor design, rapid removal and purification of gases, use of cheaper feedstock, genetic and molecular engineering to redirect metabolic pathway [6][7][8][9][10].Moreover, DF is only likely to be viable as an industrial process if integrated with a process that maximizes energy recovery from the fermentation end-products. The traditional methaneproducing anaerobic digestion process is the most promising since about 10 to 30 % more energy could be generated in the two-stage integrated system comparing to a single stage methanogenic process [11]. Besides, very prospective processes to convert acetate from DF spent medium exist such as further biohydrogen production (towards the maximum theoretical yield of 12 mol/mol glucose) by photosynthetic non-sulfur bacteria or direct electricity production in microbial fuel cells [6,11].In the past decades, most studies on biohydrogen production processes dealt with suspended culture systems such as the conventional (dis-)continuous stirred tank reactors (CSTR) since they are relatively simple and easy to operate. These investigations, several times reviewed [5,10,12,13], enabled to optimize number of operating parameters such as the ...

show abstract

Bioreactor and process design for biohydrogen production

Cited by 231 publications

References 76 publications

Pre-treatment of Yeast Production Wastewater and Hydrogen Production Based on MF-CSTR Process

Pre-treatment of Yeast Production Wastewater and Hydrogen Production Based on MF-CSTR Process

Enhancement of biohydrogen production from starch processing wastewater and further inside its ecosystem disclosed by 16S rDNA sequencing and FISH

Improvement of fermentative biohydrogen production by Clostridium butyricum CWBI1009 in sequenced-batch, horizontal fixed bed and biodisc-like anaerobic reactors with biomass retention

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