• dynamics of flocculation of lignocellulosic hydrolyzates

    Dynamics of Flocculation of Lignocellulosic Hydrolyzates

    Pretreatment of lignocellulosic materials involves the solubilization of hemicelluloses, small portions of the lignin, and such components. The hemicellulose solutions are hydrolyzed for downstream fermentation into biofuels or biomaterials. Hydrolyzates produced by pretreatment contain significant colloidal material that is anionically charged.

  • ca2868154a1 flocculation of lignocellulosic hydrolyzates

    CA2868154A1 Flocculation of lignocellulosic hydrolyzates

    A method of separating a lignin-rich solid phase from a solution, comprising: pretreating a lignocellulosic biomass with a pretreatment fluid having to remove soluble components, colloidal material and primarily lignin containing particles; separating the pretreated lignocellulosic biomass from the pretreatment fluid with soluble components, colloidal material and primarily lignin containing

  • flocculation of lignocellulosic hydrolyzates

    FLOCCULATION OF LIGNOCELLULOSIC HYDROLYZATES

    2015-02-12· The dynamics of flocculation of lignocellulosic hydrolyzates were studied with a variety of charge based flocculating agents: electrolytes (Alum) and polymers (PEI, pDADMAC, CPAM). Trivalent cations were the particularly effective suspension destabilizers among the electrolytes, while the cationic polymers could cause flocculation and also

  • controlled flocculation of lignocellulosic

    CONTROLLED FLOCCULATION OF LIGNOCELLULOSIC

    2016-03-24· The flocculation of lignocellulosic hydrolyzates can improve the separation of lignin and accelerate filtration and sedimentation. Prior art has established the applicability of non-ionic polymeric flocculants (for example, polyethylene oxide, PEO) to complex with lignin and lignin-like moieties prevalent in lignocellulosic hydrolyzates (Duarte

  • dynamics of flocculation of lignocellulosic hydrolyzates

    Dynamics of Flocculation of Lignocellulosic Hydrolyzates

    We studied the dynamics of flocculation of lignocellulosic hydrolyzates with a variety of flocculating agents: electrolytes (alum) and polymers (PEI, pDADMAC, CPAM). It was found that trivalent

  • fermentation of lignocellulosic hydrolysates for ethanol

    Fermentation of lignocellulosic hydrolysates for ethanol

    ELSEVIER Fermentation of lignocellulosic hydrolysates for ethanol production Lisbeth Olsson and B~irbel Hahn-H~igerdal Applied Microbiology, University of Lund/Lund Institute of Technology, Lund, Sweden Ethanol production from lignocellulosic hydrolysates in an economically feasible process requires microorgan- isms that produce ethanol with a high yield from all sugars present (hexoses as

  • lignocellulosic flocculation leading edge only

    Lignocellulosic Flocculation Leading Edge Only

    Controlled Flocculation of Lignocellulosic Hydrolyzates Controlled Flocculation of Lignocellulosic Hydrolyzates. About. Lignocellulosic materials such as wood are renewable and sustainable alternative resources for the production of fuels and plastics. Accelerated industrial development around the globe has resulted in strong demand for petroleum as a fuel and also as a source for plastics and

  • lignin removal from lignocellulosic hydrolyzates

    Lignin Removal from Lignocellulosic Hydrolyzates

    RESEARCH ARTICLE Yasarla and Ramarao Lignin Removal from Lignocellulosic Hydrolyzates by Flocculation with Polyethylene Oxide occurs, the suspension develops a

  • lignocellulosic flocculation leading edge only

    Lignocellulosic Flocculation Leading Edge Only

    Controlled Flocculation of Lignocellulosic Hydrolyzates Controlled Flocculation of Lignocellulosic Hydrolyzates. About. Lignocellulosic materials such as wood are renewable and sustainable alternative resources for the production of fuels and plastics. Accelerated industrial development around the globe has resulted in strong demand for petroleum as a fuel and also as a source for plastics and

  • (315d) flocculation dynamics of lignocellulosic

    (315d) Flocculation Dynamics of Lignocellulosic

    Lignocellulosic materials such as wood present as renewable and sustainable resources for the production of fuels and plastics. In one pathway to the production of liquid fuels and plastics fermentable sugars are extracted by treatment with hot water after which the hydrolyzates are purified and detoxified.

  • (675c) purification of lignocellulosic hydrolyzates

    (675c) Purification of Lignocellulosic Hydrolyzates

    Lignocellulosic hydrolyzates produced by hydrothermal treatment of wood chips contain hemicellulose sugars, acetic acid and significant quantities of colloidal material. These particles are mostly composed of lignin and its derivatives, which have a wide range of particle size distribution. Separation of these colloidal materials is necessary

  • lignin removal from lignocellulosic hydrolyzates

    Lignin Removal from Lignocellulosic Hydrolyzates

    Lignin Removal from Lignocellulosic Hydrolyzates by Flocculation with Polyethylene Oxide Buy Article: $106.34 + tax (Refund Policy)

  • flocculation dynamics of lignocellulosic hydrolyzates

    Flocculation Dynamics of Lignocellulosic Hydrolyzates

    Lignocellulosic materials such as wood present as renewable and sustainable resources for the production of fuels and plastics. In one pathway to the production of liquid fuels and plastics fermentable sugars are extracted by treatment with hot water after which the hydrolyzates are purified and detoxified.

  • flocculation causes inhibitor pubmed central (pmc)

    Flocculation Causes Inhibitor PubMed Central (PMC)

    That strong flocculation, in itself, also increases fermentation rates of toxic lignocellulosic hydrolysates and, specifically, limits the inhibitory effect of high concentration of furfural on yeast fermentation performance is of great potential importance for second-generation ethanol production. Since the occurrence of dense cell flocs

  • hydrolysis of lignocellulosic materials for ethanol

    Hydrolysis of lignocellulosic materials for ethanol

    Lignocellulosic biomass can be utilized to produce ethanol, a promising alternative energy source for the limited crude oil. There are mainly two processes involved in the conversion: hydrolysis of cellulose in the lignocellulosic biomass to produce reducing sugars, and fermentation of the sugars to ethanol.

  • enhanced solid–liquid clarification of lignocellulosic

    Enhanced solid–liquid clarification of lignocellulosic

    Polyelectrolyte flocculating agents can be used to enhance the solid–liquid clarification of lignocellulosic biomass hydrolyzates. Due to the negative zeta potential of Ponderosa Pine solids (primarily lignin) following pretreatment and enzymatic hydrolysis, cationic polymers provided the largest flocs that quickly settled out of solution

  • laboratory pulp digesters, north adams, ma

    Laboratory Pulp Digesters, North Adams, MA

    Turn to MK Systems Inc. in North Adams, MA if you are looking for a supplier of top-notch laboratory pulp digesters. Each of them has a patented liquor mixing module, an anti-turbulent tubing design, and high-speed pumps that give you one of the best cooking results available. Contact us.

  • laboratory pulp digesters, north adams, ma

    Laboratory Pulp Digesters, North Adams, MA

    Turn to MK Systems Inc. in North Adams, MA if you are looking for a supplier of top-notch laboratory pulp digesters. Each of them has a patented liquor mixing module, an anti-turbulent tubing design, and high-speed pumps that give you one of the best cooking results available. Contact us.

  • abstract: separation and purification of lignocellulosic

    Abstract: Separation and Purification of Lignocellulosic

    Lignocellulosic hydrolyzates produced by hydrothermal treatment of wood chips contain hemicellulose sugars, acetic acid and significant quantities of colloidal material. The purification of the hydrolyzate stream and the separation of fermentable sugars from it thus constitute an important step in biorefinery processes. Raw lignocellulosic

  • a possible industrial solution to ferment lignocellulosic

    A Possible Industrial Solution to Ferment Lignocellulosic

    The cultivation of toxic lignocellulosic hydrolyzates has become a challenging research topic in recent decades. Although several cultivation methods have been proposed, numerous questions have arisen regarding their industrial applications. The current work deals with a solution to this problem which has a good potential application on an

  • flocculation causes inhibitor tolerance in saccharomyces

    Flocculation Causes Inhibitor Tolerance in Saccharomyces

    The modified strain with the weakest flocculation showed a hexose consumption profile similar to the untransformed strain. These findings may explain why flocculation has evolved as a stress response and can find application in fermentation-based biorefinery processes on lignocellulosic raw materials.

  • polymer induced flocculation and separation

    Polymer induced flocculation and separation

    2010-11-01· Read "Polymer induced flocculation and separation of particulates from extracts of lignocellulosic materials, Bioresource Technology" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

  • a possible industrial solution to ferment lignocellulosic

    A Possible Industrial Solution to Ferment Lignocellulosic

    The cultivation of toxic lignocellulosic hydrolyzates has become a challengingresearch topic in recent decades. Although several cultivation methods have been proposed,numerous questions have arisen regarding their industrial applications. The current workdeals with a solution to this problem which has a good potential application on anindustrial scale. A toxic dilute-acid hydrolyzate was

  • flocculation causes inhibitor tolerance in saccharomyces

    Flocculation Causes Inhibitor Tolerance in Saccharomyces

    Flocculation Causes Inhibitor Tolerance in Saccharomyces cerevisiae for Second-Generation Bioethanol Production Johan O. Westman, a,b Valeria Mapelli, b Mohammad J. Taherzadeh, a Carl Johan Franzén

  • inhibitor tolerance and flocculation of a yeast strain

    Inhibitor tolerance and flocculation of a yeast strain

    inhibitory lignocellullosic hydrolysates. In this study, the inhibitor tolerance and flocculation characteristics of . Saccharomyces cerevisiaeCCUG53310 were evaluated in comparison with S. cerevisiae . CBS8066. Results: The flocculating strain CCUG53310 could rapidly ferment all hexoses in dilute acid spruce hydrolysate, while CBS8066 was strongly inhibited in this medium. In synthetic

  • the potential of pre-hydrolysis liquor from the dissolving

    The potential of pre-hydrolysis liquor from the dissolving

    The Potential of Pre-Hydrolysis Liquor from the Dissolving Pulp Process as Recovery Source of Xylooligosaccharide A Mini-Review Chaojun Wu* Currently, xylooligosaccharides (XOs), which are a kind of nutraceutical that can be produced from lignocellulosic

  • separation processes of hydrolyzates for ethanol

    Separation Processes of Hydrolyzates for Ethanol

    This project is to separate lignin and other fermentation inhibitors [furfural and hydroxyl-methyl furfural] fromagricultural residue biomass hydrolyzed by the steam explosion process. The key technology we seek to develop,demonstrate and implement is an innovative polymer induced flocculation and separation of the hydrolyzates, based onrecent laboratory and pilot scale demonstration of this

  • flocculation causes inhibitor tolerance in saccharomyces

    Flocculation Causes Inhibitor Tolerance in Saccharomyces

    The modified strain with the weakest flocculation showed a hexose consumption profile similar to the untransformed strain. These findings may explain why flocculation has evolved as a stress response and can find application in fermentation-based biorefinery processes on lignocellulosic raw materials.

  • detoxification of dilute acid hydrolysates

    Detoxification of Dilute Acid Hydrolysates

    Dae Haeng Cho, Yun Jie Lee, Youngsoon Um, Byoung-In Sang and Yong Hwan Kim, Detoxification of model phenolic compounds in lignocellulosic hydrolysates with peroxidase for butanol production from Clostridium beijerinckii, Applied Microbiology and Biotechnology, 10.1007/s00253-009-1925-8, 83, 6, (1035-1043), (2009).

  • inhibitor tolerance and flocculation of a yeast strain

    Inhibitor tolerance and flocculation of a yeast strain

    Flocculation depended on cell wall proteins and Ca. 2+ ions, but was almost unaffected by other compounds and pH values typical for lignocellulosic media. Conclusions: S. cerevisiae . CCUG53310 can be characterised as being very robust, with great potential for industrial fermentation of lignocellulosic hydroly sates relatively low in phenolic inhibitors. Keywords: biofuel, furfural

  • inhibitor tolerance and flocculation of a yeast strain

    Inhibitor tolerance and flocculation of a yeast strain

    Background: Robust second generation bioethanol processes require microorganisms able to ferment inhibitory lignocellullosic hydrolysates. In this study, the inhibitor tolerance and flocculation characteristics of Saccharomyces cerevisiae CCUG53310 were evaluated in comparison with S. cerevisiae CBS8066. Results: The flocculating strain CCUG53310 could rapidly ferment all hexoses in

  • inhibitor tolerance and flocculation of a yeast strain

    Inhibitor tolerance and flocculation of a yeast strain

    Inhibitor tolerance and flocculation of a yeast strain suitable for second generation bioethanol production. Johan O. Westman* 1,2 · Mohammad J. Taherzadeh 1 · Carl Johan Franzén 2 1 University of Borås, School of Engineering, Borås, Sweden. 2 Chalmers University of Technology, Department of Chemical and Biological Engineering-Industrial Biotechnology, Göteborg, Sweden

  • ph-sensitive flocculation: settling rates and sediment

    pH-sensitive flocculation: Settling rates and sediment

    After the formation of a sediment bed, the pH was changed to establish repulsive forces between the particles; additional sediment consolidation was seen to occur. By creating repulsion between the particles in the sediment, the volume of sediments could be reduced by between 10 to 50% compared to attractive flocculation only. For each case

  • abstract: separation and purification of lignocellulosic

    Abstract: Separation and Purification of Lignocellulosic

    Lignocellulosic hydrolyzates produced by hydrothermal treatment of wood chips contain hemicellulose sugars, acetic acid and significant quantities of colloidal material. The purification of the hydrolyzate stream and the separation of fermentable sugars from it thus constitute an important step in biorefinery processes. Raw lignocellulosic

  • contribution of prs3, rpb4 and zwf1 to the resistance

    Contribution of PRS3, RPB4 and ZWF1 to the resistance

    Contribution of PRS3, RPB4 and ZWF1 to the resistance of industrial Saccharomyces cerevisiae CCUG53310 and PE-2 strains to lignocellulosic hydrolysate-derived inhibitors Joana T. Cunha, Tatiana Q. Aguiar, Aloia Romaní, Carla Oliveira, Lucília Domingues⇑ CEB Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal

  • a possible industrial solution to ferment lignocellulosic

    A Possible Industrial Solution to Ferment Lignocellulosic

    compounds [16-18]. These compounds inhibit cultivation of yeast in lignocellulosic hydrolyzates, hence a great effort has been made to avoid or solve this inhibition problem [19-22]. In general, since the fermenting microorganisms are able to detoxify the hydrolyzates in situ,any process that can

  • identifying inhibitory compounds in lignocellulosic

    Identifying inhibitory compounds in lignocellulosic

    Inhibitory compounds in lignocellulosic biomass hydrolysates were successfully identified through applying an exometabolomics approach. The identification was conducted by relating the fermentability of biomass hydrolysates with their composition using statistical models, (n)PLS-2CV. The non-sugar composition of biomass hydrolysates were

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