Hydrogen production from food wastes and gas post-treatment by CO2 adsorption

Redondas, Vanesa; Gómez, Xiomar; García, Susana; Pevida, C.; Rubiera, F.; Palao, Antonio Morán; Pís, J.J.

doi:10.1016/j.wasman.2011.09.003

Cited by 46 publications

(17 citation statements)

References 44 publications

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“…Adsorption with low temperature solid sorbents has the potential to reduce the energy penalty associated with the separation of CO 2 at sub-atmospheric pressures, not only under post-combustion capture conditions (CO 2 /N 2 separation) but also for bio-hydrogen (CO 2 /H 2 separation) and bio-methane production (CO 2 /CH 4 separation) [7,8]. However, the success of these approaches depends on the development of adsorbents with a high selectivity, sufficient adsorption capacity and easy regeneration.…”

Section: Introductionmentioning

confidence: 99%

Phenol-Formaldehyde Resin-Based Carbons for CO2 Separation at Sub-Atmospheric Pressures

et al. 2016

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Abstract:The challenge of developing effective separation and purification technologies that leave much smaller energy footprints is greater for carbon dioxide (CO 2 ) than for other gases. In addition to its involvement in climate change, CO 2 is present as an impurity in biogas and bio-hydrogen (biological production by dark fermentation), in post-combustion processes (flue gas, CO 2 -N 2 ) and many other gas streams. Selected phenol-formaldehyde resin-based activated carbons prepared in our laboratory have been evaluated under static conditions (adsorption isotherms) as potential adsorbents for CO 2 separation at sub-atmospheric pressures, i.e., in post-combustion processes or from biogas and bio-hydrogen streams. CO 2 , H 2 , N 2 , and CH 4 adsorption isotherms at 25˝C and up to 100 kPa were obtained using a volumetric equipment and were correlated by applying the Sips model. Adsorption equilibrium was then predicted for multicomponent gas mixtures by extending the multicomponent Sips model and the Ideal Adsorbed Solution Theory (IAST) in conjunction with the Sips model. The CO 2 uptakes of the resin-derived carbons from CO 2 -CH 4 , CO 2 -H 2 , and CO 2 -N 2 at atmospheric pressure were greater than those of the reference commercial carbon (Calgon BPL). The performance of the resin-derived carbons in terms of equilibrium of adsorption seems therefore relevant to CO 2 separation in post-combustion (flue gas, CO 2 -N 2 ) and in hydrogen fermentation (CO 2 -H 2 , CO 2 -CH 4 ).

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Section: Introductionmentioning

confidence: 99%

Phenol-Formaldehyde Resin-Based Carbons for CO2 Separation at Sub-Atmospheric Pressures

et al. 2016

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“…Amongst the variety of alternatives available for its generation, the hydrogen production by biological means, although still far from being a commercially viable technology, shows great promise for the future [1]. Biological approaches could contribute to large-scale hydrogen production as various microorganisms can produce H 2 under moderate conditions from readily available, renewable substrates, making biological strategies potentially competitive with chemical processes such as reforming and gasification.…”

Section: Introductionmentioning

confidence: 99%

“…Within the different microbial processes which use microorganisms capable of forming H 2 , the dark fermentation is one of the technologies that has been investigated with a focus on biohydrogen production due to its ability to produce hydrogen continuously from a number of renewable feedstocks, such as biomass-derived sugars, organic wastes, and carbohydrate-rich wastewater, without an input of external energy [3,4]. Thus, the dark fermentation technology has successfully been used to treat residual biomass sources [1,[5][6][7][8] in order to recover hydrogen gas. These works indicated that two-phase hydrogen/methane fermentation process may have a great potential for recovering energy from carbohydrate-rich wastes.…”

Section: Introductionmentioning

confidence: 99%

“…However, PSA units are commonly used in the purification of hydrogen produced from natural gas steam reforming [30] and they are able to produce very pure H 2 by removing relatively high concentrations of CO 2 . Adsorption by biomass-derived activated carbons was proposed for the purification of hydrogen from a gas stream generated from the dark fermentation process in a previous work carried out in collaboration with the University of León [1] and the results demonstrated a successful separation of CO 2 . However, the authors highlighted that the success of this approach is dependent on the development of low-cost adsorbents with a high CO 2 selectivity and adsorption capacity and with a good performance in multiple adsorption/desorption cycles.…”

Section: Introductionmentioning

confidence: 99%

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Carbon adsorbents for CO2 capture from bio-hydrogen and biogas streams: Breakthrough adsorption study

Gil

Álvarez-Gutiérrez

Martinez

et al. 2015

Chemical Engineering Journal

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The biological production of H 2 by dark fermentation is being extensively investigated due to the great potential of the two-phase hydrogen/methane fermentation process for recovering energy from carbohydrate-rich wastes. However, the purification of the bio-hydrogen and biogas obtained is needed to produce high-purity H 2 and CH 4 streams appropriate for industrial application. In this study, the performance of three activated carbons (No1KCla-600, No1KClb-1000 and No2OS-1000), synthesized from phenol-formaldehyde resins, as potential adsorbents for CO 2 capture from bio-hydrogen and biogas streams has been evaluated under dynamic conditions. Adsorptiondesorption cycles by means of temperature swings were conducted at ambient temperature and atmospheric pressure with CO 2 /H 2 (40/60 and 70/30 vol.% at normal conditions) and CO 2 /CH 4 (50/50 vol.% at normal conditions) binary gas mixtures in a purpose-built fixed-bed set-up. The performance of the resin-derived carbons to separate CO 2 was superior to that of reference commercial carbons in terms of CO 2 uptake, breakthrough time and column efficiency. These adsorbents presented high * Corresponding author.

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“…The abundance of different types of waste were recently reviewed by Redondas et al [21]. The preferred substrates for such processes are carbohydrates because their conversion is thermodynamically superior to that of alternative substrates.…”

Section: Heterotrophic Production Of Hydrogenmentioning

confidence: 99%