Alkali-promoted hydrothermal gasification of biomass food processing waste: A parametric study

Muangrat, Rattana; Onwudili, Jude A.; Williams, Paul T.

doi:10.1016/j.ijhydene.2010.04.179

Cited by 69 publications

(29 citation statements)

References 40 publications

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“…The positive effects of other (earth) alkali salts such as (NaOH, Ca(OH)2, Na2CO3, NaHCO3) on the gasification yield have also been reported by other authors [67][68][69][70][71] for different kinds of biomass feedstocks. Yildiz Bircan et al [72] investigated the addition of Ca(OH)2 on the gasification performance of an amino acid, L-cysteine.…”

Section: Effect Of Salts and The Role As Homogeneous Catalystssupporting

confidence: 65%

Supercritical Water Gasification of Biomass: A Literature and Technology Overview

Yakaboylu

Harinck

Smit³

et al. 2015

Energies

183

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Abstract:The supercritical water gasification process is an alternative to both conventional gasification as well as anaerobic digestion as it does not require drying and the process takes place at much shorter residence times; a few minutes at most. The drastic changes in the thermo-physical properties of water from the liquid state to the supercritical state make it a promising technology for the efficient conversion of wet biomass into a product gas that after upgrading can be used as substitute natural gas. The earliest research goes back as far as the 1970s and since then, supercritical water has been the subject of many research works in the field of thermochemical conversion of wet biomass. This article reviews the state of the art of the supercritical water gasification technology starting from the thermophysical properties of water and the chemistry of reactions to the process challenges of such a biomass based supercritical water gasification process plant.

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Section: Effect Of Salts and The Role As Homogeneous Catalystssupporting

confidence: 65%

Supercritical Water Gasification of Biomass: A Literature and Technology Overview

Yakaboylu

Harinck

Smit³

et al. 2015

Energies

183

View full text Add to dashboard Cite

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“…Alkali catalysts (NaOH, KOH) and carbonate (Na 2 CO 3 ) were used to improve the production of H 2 via the water-gas shift reaction [10]. TOC analysis was carried out to quantify total carbon in the inlet and outlet streams of the reactor in all experimental runs allowing the evaluation of the gasification reaction efficiency.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen production and TOC reduction from gasification of lactose by supercritical water

Ferreira-Pinto

Feirhrmann

Corazza

et al. 2015

International Journal of Hydrogen Energy

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Supercritical water gasificationLactose Dairy industry effluents a b s t r a c t New data were obtained for production of H 2 and reduction of total organic carbon (TOC) by gasification of lactose in supercritical water with(out) the presence of catalysts (NaOH, KOH and Na 2 CO 3 ) in a continuous Inconel 625 flow reactor. The gasification reactions were carried out at 550e700 C, 22.5 MPa, lactose concentrations in the range of 0.5e2.5 wt%, feed flow rates of 5 and 7 g min À1 and a total reaction time of 30 min. The optimum condition for the production of H 2 yielded approximately 4.5 mol H 2 /mol lactose with a TOC reduction of~95%. In addition, supercritical gasification of whey was carried out using the same operating conditions as the lactose system. A reduction of 92% on the TOC and 0.45 molar fraction of H 2 production was achieved, similar to the gasification of lactose at a concentration of 0.5 wt%.

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“…In contrast, water is a convenient solvent for biomass deconstruction because the properties of water, such as dielectric constant, density, and ionic product, can be adjusted with the temperature and pressure. There are numerous studies [11,151,25,51,60,64,68,70,71,97,98,104,124,149,152,151] on the biomass conversion in hot temperature water (HTW) and supercritical water (SCW). HTW is broadly defined to be subcritical liquid water (150°C \ T \ 374°C), and SCW is water at temperatures and pressures above the critical point (T [ 374°C and P [ 221 bar) [3,120].…”

Section: Introductionmentioning

confidence: 99%

Catalytic Conversion of Lignocellulosic Biomass to Value-Added Organic Acids in Aqueous Media

Lin

Liu

et al. 2014

Green Chemistry and Sustainable Technology

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The transition from today's fossil-based economy to a sustainable economy based on renewable biomass is driven by the concern of climate change and anticipation of dwindling fossil resources. Although biofuels are the central theme of the transition, biomass resources cannot completely replace petroleum. It is projected that biofuels can only supply up to 30 % of today's transportation fuel market even if all available domestic biomass resources are used for the production of liquid fuels. Therefore, transformation of biomass into high-value-added chemicals is advantageous to secure optimal use of the abundant, but limited, biomass resources from the economical and ecological perspective. Industry is increasingly considering bio-based chemical production as an attractive area for investment. The potential for chemical and polymer production from biomass is substantial. The US Department of Energy recently issued a report which listed 12 chemical building blocks considered as potential building blocks for the future. Organic acids (e.g., succinic, lactic, levulinic acid, etc.) are among the widely spread ''platform-molecules,'' which may be further converted into possibly derivable high-value-added chemicals. The transition from a fossil chemical industry to a renewable chemical industry will likewise depend on our ability to focus research and development efforts on the most promising alternatives. In this chapter, we review the emerging technologies on catalytic conversion of biomass to value-added organic acids in aqueous media.

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Alkali-promoted hydrothermal gasification of biomass food processing waste: A parametric study

Cited by 69 publications

References 40 publications

Supercritical Water Gasification of Biomass: A Literature and Technology Overview

Supercritical Water Gasification of Biomass: A Literature and Technology Overview

Hydrogen production and TOC reduction from gasification of lactose by supercritical water

Catalytic Conversion of Lignocellulosic Biomass to Value-Added Organic Acids in Aqueous Media

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