Biohydrogen purification using a commercial polyimide membrane module: Studying the effects of some process variables

Bakonyi, Péter; Kumar, Gopalakrishnan; Nemestóthy, Nándor; Lin, Chiu‐Yue; Bélafi–Bakó, Katalin

doi:10.1016/j.ijhydene.2013.09.133

Cited by 57 publications

(31 citation statements)

References 36 publications

(31 reference statements)

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“…Furthermore, the trend of the H 2 -purity in the permeate approaches a certain maximum with decreasing stage cut. The results for the single- stage setup go along with the findings from Bakonyi et al (2013), who identifies the gas composition, temperature, and stage cut as important process variables that could affect the hydrogen separation efficiency. It has to be noted that they also tested polyimide membrane material in their work, but at a lower feed pressure.…”

Section: Resultssupporting

confidence: 57%

“…The findings from the membrane tests therefore confirm the assumption that a desired H 2 -purity in the product of at least 95 vol% cannot be reached by the utilization of a single-stage membrane module. This is somewhat typical for membrane processes, as the selectivity is often not high enough for a complete removal of the contaminant (Bakonyi et al 2013). However, the implementation of a second stage could lead to the necessary improvement in product quality.…”

Section: Resultsmentioning

confidence: 99%

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The purification of fermentatively produced hydrogen using membrane technology: a simulation based on small-scale pilot plant results

Lassmann

Miltner

Harasek

et al. 2015

Clean Techn Environ Policy

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Hydrogen is known as one of the most promising energy carriers of the future. Its production in a sustainable manner is therefore an important step towards a competitive alternative to fossil energy sources. Dark fermentation is such a sustainable pathway, as hydrogen is produced via biotechnological conversion of biomass. But, the resulting hydrogen-rich gas from fermentation still needs to be upgraded, which can be done via membrane technology. In this work, an innovative small-scale process was developed, membrane modules were assembled and tested, and the purification method was simulatively investigated. The laboratory tests with pure gases showed that the utilized commercially available H 2 -selective membranes have an ideal H 2 /CO 2 -selectivity of 3.3, at the respective process conditions. When applying gas mixtures, the H 2 /CO 2 -selectivity was reduced. To further investigate the purification method, an Aspen Plus Ò gas permeation simulation model was used. The single-stage model was evaluated and it reflected the results from field and laboratory tests well. Furthermore, three different multi-stage setups were developed, simulated, and analyzed. The utilization of H 2 -selective material in a two-stage process resulted in a specific energy demand of 0.400 kWh/Nm 3 H 2 , but achieved no sufficient hydrogen purity. Compared to that, the use of CO 2 -selective membranes demanded only 0.296 kWh/Nm 3 H 2 . The recycle to feed ratio, as well as the H 2 -puriy of 95.5 vol% in the product was also in favor of the CO 2 -selective membranes compared to the commercially available H 2 -selective material.

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Section: Resultssupporting

confidence: 57%

Section: Resultsmentioning

confidence: 99%

The purification of fermentatively produced hydrogen using membrane technology: a simulation based on small-scale pilot plant results

Lassmann

Miltner

Harasek

et al. 2015

Clean Techn Environ Policy

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show abstract

“…Biogas and biohydrogen fermentations involve the microbiologically-assisted degradation of organic compounds and result in flammable gaseous energy carriers, which should be collected and purified [11][12][13][14][15]. In our earlier projects biogas [16,17] as well as biohydrogen [18][19][20][21][22] production from various substrates have been investigated.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Anaerobic Degradation Processes for Bioenergy Generation from Liquid Fraction of Pressed Solid Waste

Rózsenberszki

Koók

Hutvágner

et al. 2015

Waste Biomass Valor

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“…derivates of biomass, waste streams and agricultural residues [3][4][5], and the possibility to integrate with other e.g. membrane-based processes in order to accomplish the sufficient reuse of hydrogen producing cells [6] or to upgrade bioH 2 [7][8][9] so that it could be a viable feedstock in energy efficient fuel cells.…”

Section: Introductionmentioning

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

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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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Biohydrogen purification using a commercial polyimide membrane module: Studying the effects of some process variables

Cited by 57 publications

References 36 publications

The purification of fermentatively produced hydrogen using membrane technology: a simulation based on small-scale pilot plant results

The purification of fermentatively produced hydrogen using membrane technology: a simulation based on small-scale pilot plant results

Comparison of Anaerobic Degradation Processes for Bioenergy Generation from Liquid Fraction of Pressed Solid Waste

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

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