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Oxygen delignification of waste cellulosic paper products

Oxygen delignification of waste cellulosic paper products

Waste cellulosic paper products, for example, old corrugated containers are recycled employing oxygen delignification in the presence of an alkaline material to produce a recycled pulp of lower kappa number, while maintaining adequate strength in the pulp.The recycling process preferably employs an acid pretreatment in combination with the oxygen delignification, and exposure of the waste .

E-Fuel Introduces MicroFusion™ Reactor - PR Newswire

E-Fuel Introduces MicroFusion™ Reactor - PR Newswire

The MicroFusion Reactor operates as a continuous process. Every 2 minutes the cellulosic material in the reactor chamber is completely processed and ready for fuel processing. The method of wood .

Cellulosic ethanol - Wikipedia

Cellulosic ethanol - Wikipedia

Overview. Cellulosic ethanol is a type of biofuel produced from lignocellulose, a structural material that comprises much of the mass of plants.Lignocellulose is composed mainly of cellulose, hemicellulose and lignin. Corn stover, Panicum virgatum (switchgrass), Miscanthus grass species, wood chips and the byproducts of lawn and tree maintenance are some of the more popular cellulosic .

Neutron moderator - Wikipedia

Neutron moderator - Wikipedia

Reactors moderated with heavy water can use unenriched natural uranium. Carbon, in the form of reactor-grade graphite or pyrolytic carbon, used in e.g. RBMK and pebble-bed reactors, or in compounds, e.g. carbon dioxide. Lower-temperature reactors are susceptible to buildup of Wigner energy in the material. Like deuterium-moderated reactors .

EP0044658A1 - Improved method of increasing the .

EP0044658A1 - Improved method of increasing the .

This invention comprises a method for increasing the accessibility of cellulose in lignocellulosic materials to chemical or biochemical reagents. The material is steam cooked for a predetermined time, then rapidly depressurized. A venting sequence is used to remove volatiles from the reactor. Optimal cooking times for normal and acid catalyzed cooking are disclosed, according to the discovery .

Microbial Degradation of Cellulosic Material and Gas .

Microbial Degradation of Cellulosic Material and Gas .

Nuclear power plant operations produce low- and intermediate-level radioactive waste (LILW). Low-level waste is radioactive waste in which the concentration of radionuclides is above 1 Becquerel per gram and contains primarily radionuclides with half-lives shorter than or equal to 30 years. . The cellulosic material amended with the additive .

Process and installation for obtaining ethanol by the .

Process and installation for obtaining ethanol by the .

Jul 16, 1985 · A process according to claim 1, wherein the reaction time of the cellulosic material pulp inside the reactor is about 20 to 300 seconds. 3. A process according to claim 1, wherein the concentrated acid is sulfuric acid, said acid being added in an amount such that, when diluted by the water of the cellulosic material pulp, it is present in a .

Cellulose to Sugar (CTS) Technology for Ethanol Production .

Cellulose to Sugar (CTS) Technology for Ethanol Production .

The CTS process is a simple mechanical process which combines waste biomass material including wood, paper, agricultural, and yard waste with a proprietary catalyst in our patented CTS reactor. The CTS reactor creates a mechanochemical reaction within minutes and breaks down the cellulose to its base components of C5 and C6 sugars and Lignin.

Kinetics of formic acid-catalyzed cellulose hydrolysis .

Kinetics of formic acid-catalyzed cellulose hydrolysis .

Abstract. Hydrolysis is a reaction to produce sugars from lignocellulosic raw materials for biochemical production. The present study elucidates the hydrolysis of cellulose and formation of glucose decomposition products catalyzed by 5% to 20% (w/w) formic acid at 180 to 220 °C with an initial cellulose concentration of 10 to 100 g/L. Microcrystalline cellulose was used as a model compound.

Recent Strategies in Preparation of Cellulose Nanocrystals .

Recent Strategies in Preparation of Cellulose Nanocrystals .

The recent strategies in preparation of cellulose nanocrystals (CNCs) and cellulose nanofibrils (CNFs) were described. CNCs and CNFs are two types of nanocelluloses (NCs), and they possess various superior properties, such as large specific surface area, high tensile strength and stiffness, low density, and low thermal expansion coefficient. Due to various applications in biomedical .

Cellulosic Material - an overview | ScienceDirect Topics

Cellulosic Material - an overview | ScienceDirect Topics

This action taken by cellulosic materials is due to the presence of capillary that causes the absorption of water during the soaking of material into the water, which results in enhancement in the composite structure. As a result, the fiber swells up, thereby increasing the thickness of composites. Generally, fibers show the moisture content 5% .

Microbial Degradation of Cellulosic Material and Gas .

Microbial Degradation of Cellulosic Material and Gas .

Nuclear power plant operations produce low- and intermediate-level radioactive waste (LILW). Low-level waste is radioactive waste in which the concentration of radionuclides is above 1 Becquerel per gram and contains primarily radionuclides with half-lives shorter than or equal to 30 years. . The cellulosic material amended with the additive .

Ag@AgCl nanoparticles in-situ deposited cellulose acetate .

[email protected] nanoparticles in-situ deposited cellulose acetate .

In this paper, non-solvent-induced phase separation and in situ deposition are applied to prepare a multifunctional [email protected] acetate/silk fibroin ([email protected]/SF) composite film. The CA/SF film is employed as an eco-friendly substrate that provides sites for [email protected] nanoparticle (NP) in situ deposition. The films are characterized using various analytical methods.

Dilute Acid Hydrolysis of Cellulose and Cellulosic Bio .

Dilute Acid Hydrolysis of Cellulose and Cellulosic Bio .

The aim of this research, is to study dilute acid hydrolysis of cellulose and waste cellulosic biomass (grass clippings) with phosphoric acid (1–10%v/v), employing a microwave reactor. Process parameters investigated include variation in reaction temperature (150°C to 200°C) and acid catalyst concentration.

Dual roles of cellulose monolith in the continuous-flow .

Dual roles of cellulose monolith in the continuous-flow .

Jul 03, 2020 · Monolithic flow reactors are widely applied in numerous reactions due to its high efficiency and good reusability, but the green and efficient fabrica.

"Smart" Materials Based on Cellulose: A Review of the .

1. Introduction. Cellulose is the most abundant renewable organic material produced in the biosphere, with approximately 5 × 10 11 metric tons being generated yearly. Unfortunately, a mere 2% is recovered industrially [].Cellulose is a linear syndiotactic homopolymer composed of D-anhydroglucopyranose units (AGUs), which are linked by β-(1→4)-glycosidic bonds (Figure 1).

ShockWave Power Cavitation Reactor by Hydro Dynamics, Inc .

ShockWave Power Cavitation Reactor by Hydro Dynamics, Inc .

Mar 14, 2014 · In cellulosic ethanol agricultural products containing cellulose are treated to extract the cellulose and convert it into fermentable sugars through acid hydrolysis or enzyme. The most typical cellulose sources discussed are inedible waste materials from food crops, fast-growing high yield grasses, wood waste or the fibrous material in a corn .

WO2007009463A2 - Method and apparatus for conversion of .

WO2007009463A2 - Method and apparatus for conversion of .

The method of the present invention comprises: - performing the hydrothermal pre-treatment by subjecting the cellulosic material to at least one soaking operation, and conveying the cellulosic material through at least one pressurised reactor, and subjecting the cellulosic material to at least one pressing operation, creating a fibre fraction .

Continual Shrinking-Bed Reactor Boosts Biomass Ethanol

Continual Shrinking-Bed Reactor Boosts Biomass Ethanol

cellulosic material comes from hemicellulose, and two-thirds, from cellulose. Increasing the sugar yield from hemicellulose by 10% to 15% With a three-stage temperature design such as this, countercurrent, shrinking-bed reactors would hydrolyze cellulosic as well as hemicellulosic carbohydrates, becoming

Ulllted States Patent [19] [11] Patent Number: 5,846,787

Ulllted States Patent [19] [11] Patent Number: 5,846,787

the plant cellulose material and Water to a reactor to form a pretreatment mixture. This mixture is then heated to a temperature of at least about 160° C. but not exceeding about 220° C., the pH of the pretreatment mixture during said heading being in the range of about 5 to about 7. Thereafter, a cellulose material is recovered therefrom

Cellulosic ethanol | biofuel | Britannica

Cellulosic ethanol | biofuel | Britannica

Cellulosic ethanol, second-generation biofuel that is manufactured by converting vegetation unsuitable for human consumption into ethyl alcohol (ethanol). Whereas first-generation biofuels use edible feedstock such as corn (maize), cellulosic ethanol can be produced by using raw materials such as wood, grass, or nonedible plant parts.All biofuels are renewable, but cellulosic ethanol has a .

3.3 Saccharification of cellulosic waste materials

3.3 Saccharification of cellulosic waste materials

3.3.2.1 Saccharification. Saccharification of cellulosic waste materials was conducted using mutant strains obtained from Trichoderma reesei QM-9414 by mutation, (Section 3.2.2), as sources of cellulase enzymes (6, 7). A high titer, low cost cellulase was obtained in our laboratory subsequent to extensive studies on optimum culturing of these strains as described in Section 3.2.3.

Enhanced attrition bioreactor for enzyme hydrolysis or .

Enhanced attrition bioreactor for enzyme hydrolysis or .

@article{osti_870376, title = {Enhanced attrition bioreactor for enzyme hydrolysis or cellulosic materials}, author = {Scott, Timothy C and Scott, Charles D and Faison, Brendlyn D and Davison, Brian H and Woodward, Jonathan}, abstractNote = {A process for converting cellulosic materials, such as waste paper, into fuels and chemicals, such as sugars and ethanol, utilizing enzymatic hydrolysis .

Cellulosic Ethanol Falling Far Short Of The Hype

Cellulosic Ethanol Falling Far Short Of The Hype

Feb 11, 2018 · Cellulose is an important structural material for plants, and it is made up of many repeating sugar units. These repeating sugar units can be .

Anaerobic rumen SBR for degradation of cellulosic material.

Anaerobic rumen SBR for degradation of cellulosic material.

Rumen-based ecosystems appear to achieve very high hydrolysis rates for cellulosic organic material. This study aimed at the development and demonstration of an anaerobic sequencing batch reactor (SBR) process operating with a rumen-based microbial inoculum. Fibrous alpha cellulose was used as sole carbon substrate and the use of an SBR .

ShockWave Power Cavitation Reactor by Hydro Dynamics, Inc .

ShockWave Power Cavitation Reactor by Hydro Dynamics, Inc .

Mar 14, 2014 · In cellulosic ethanol agricultural products containing cellulose are treated to extract the cellulose and convert it into fermentable sugars through acid hydrolysis or enzyme. The most typical cellulose sources discussed are inedible waste materials from food crops, fast-growing high yield grasses, wood waste or the fibrous material in a corn .

EP3156539A1 - Continuous process for pretreating a ligno .

EP3156539A1 - Continuous process for pretreating a ligno .

It is disclosed a continuous process for pre-treating a ligno-cellulosic feedstock. The ligno-cellulosic feedstock is introduced in a pressurized reactor vessel and subjected to a hydrothermal treatment with steam by inserting steam from at least a two steam streams having different temperatures. The ligno-cellulosic feedstock is then subjected to steam explosion.

Process for converting cellulosic materials into fuels and .

Process for converting cellulosic materials into fuels and .

A process for converting cellulosic materials, such as waste paper, into fuels and chemicals utilizing enzymatic hydrolysis of the major constituent of paper, cellulose. A waste paper slurry is contacted by cellulase in an agitated hydrolyzer. . and wherein the first material is combusted in the chemical reactor to produce a combustion flame .

Direct hydrolysis of cellulose to glucose using ultra-high .

Direct hydrolysis of cellulose to glucose using ultra-high .

The reactor has a reactor capacity of 2.0 L with a maximum pressure of 67 atm and a maximum temperature of 280 °C. The reactor was charged with 50 g (dry matter) of feedstock per batch. Saturated steam from the boiler was then allowed to enter the reactor to heat the cellulosic material at a controlled pressure of 50–62 atm (264–278 °C).

Cellulosic | Definition of Cellulosic at Dictionary.com

Cellulosic | Definition of Cellulosic at Dictionary.com

Cellulosic definition, of, containing, or derived from cellulose. See more.