Comparison of different pretreatment methods for enriching hydrogen-producing bacteria from digested sludge

Wang, Jianlong; Wan, Wei

doi:10.1016/j.ijhydene.2008.03.048

Cited by 307 publications

(121 citation statements)

References 32 publications

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“…For such purposes, a lot of tools have been developed based on heat shock, addition of chemicals, swinging the oxidation-reduction potential (ORP) e.g. by aeration, high energy irradiation, alteration of pH, freezing and thawing [26][27][28]. These pretreatment techniques exploit the distinct sensitivity of strains present in the mixture and in general could provide a satisfactory starter culture to be used as seed inocula for subsequent biohydrogen fermentation.…”

Section: Pretreatment and Stimulationmentioning

confidence: 99%

Review on the start-up experiences of continuous fermentative hydrogen producing bioreactors

Bakonyi

Nemestóthy

Simon

et al. 2014

Renewable and Sustainable Energy Reviews

113

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a b s t r a c tThe start-up of continuous biohydrogen fermentations is a complex procedure and a key to acceptable hydrogen production performance and successful long-term operation. In this review article, the experiences gained and lessons learned from relevant literature studies dealing with various aspects of H 2 producing bioreactor start-up are comprehensively surveyed. Firstly, the importance of H 2 -forming biosystem start-up including its main steps is outlined. Afterwards, the role of main influencing factors and methods (e.g. strain selection, seed pretreatment and inocula stimulation, switch-over time, bioreactor design, operating conditions) in avoiding the deterioration of starting a reactor is analyzed and presented in detail. Finally, the so far suggested applicable start-up strategies and the corresponding findings are critically discussed pointing out the advantages and disadvantages of each strategy.

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Section: Pretreatment and Stimulationmentioning

confidence: 99%

Review on the start-up experiences of continuous fermentative hydrogen producing bioreactors

Bakonyi

Nemestóthy

Simon

et al. 2014

Renewable and Sustainable Energy Reviews

113

View full text Add to dashboard Cite

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“…The ANN model was then used to estimate the temporal hydrogen evolution for three new data sets adopted from Chen et al [24], Nasr et al [26], and Wang and Wan [28] that were not used in the training process. Chen et al [24] investigated biohydrogen production from sucrose in batch studies using ADS at 36 C and an initial pH of 5.5.…”

Section: Hydrogen Production Prediction Using Annmentioning

confidence: 99%

“…Nasr et al [26] investigated biohydrogen production from thin stillage as the substrate using ADS as the seed microflora at 37 C and an initial pH of 5.5. Wang and Wan [28] investigated biohydrogen production from glucose in batch studies at 35 C using preheated ADS at an initial pH of 7. Fig.…”

Section: Hydrogen Production Prediction Using Annmentioning

confidence: 99%

Application of artificial neural networks for modeling of biohydrogen production

Nasr

Hafez

Naggar

et al. 2013

International Journal of Hydrogen Energy

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“…Different methods such as acid, base, heating, using chemical compound, aeration, and ultrasonication were used as a pretreatment for enriching biohydrogen-producing bacteria. [4567]…”

Section: Introductionmentioning

confidence: 99%

“…and Enterobacter dominance. [68] The efficiency of biohydrogen production process is different depending on pretreatment method, dominance bacteria, substrate, and metabolic pathway. [910] With understanding metabolic pathway, the calculation of theoretical hydrogen yield is possible.…”

Section: Introductionmentioning

confidence: 99%

Comparison of acetate-butyrate and acetate-ethanol metabolic pathway in biohydrogen production

et al. 2018

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Background:Hydrogen gas is the cleanest energy carrier and could be produced by biological process. Dark fermentation is one of the biohydrogen production methods that carried out just on organic wastes conversion.Methods:In this study, the batch tests were conducted to compare the biohydrogen production and glucose fermentation via acetate-butyrate and acetate-ethanol metabolic pathway induced by NaOH and KOH (10 M) pretreatment. In batch test, the glucose concentration in the feed was varied from 3.75 to 15 g/L under mesophilic conditions (37°C ± 1°C). In order to sludge pretreatment, NaOH and KOH (as an alkaline agent) was used.Results:Batch tests showed that maximum biohydrogen production under NaOH (2.7 ± 0.5 L) and KOH (2.2 ± 0.7 L) pretreatment was achieved at 15 g/L of influent glucose. In the batch test, with increasing influent glucose concentration, the lower yields of hydrogen were observed. The biohydrogen reactions had good electron closure (5.2%–13.5%) for various glucose concentrations and pretreatments. For NaOH and KOH pretreatment, the biohydrogen yield decreased from 2.49 to 1.63 and from 2.22 to 1.2 mol H2/mol glucose, respectively, when glucose concentration increased from 3.75 to 15 g/L.Conclusions:By applying alkaline sludge pretreatment by NaOH and KOH, the glucose fermentation was followed with acetate-butyrate and acetate-ethanol metabolic pathway, respectively. The lower biohydrogen yields were observed under acetate-ethanol metabolic pathway and related to metabolically unfavorable for biohydrogen production.

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Comparison of different pretreatment methods for enriching hydrogen-producing bacteria from digested sludge

Cited by 307 publications

References 32 publications

Review on the start-up experiences of continuous fermentative hydrogen producing bioreactors

Review on the start-up experiences of continuous fermentative hydrogen producing bioreactors

Application of artificial neural networks for modeling of biohydrogen production

Comparison of acetate-butyrate and acetate-ethanol metabolic pathway in biohydrogen production

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