Results 121 to 130 of about 743 (161)

Prehydrolysis Pulping with Fermentation Coproducts

2012
Prehydrolysis coupled with traditional pulping methods is a forest biorefinery approach to add valuable fermentation-based coproducts to existing pulp and paper production. This chapter will review research on pulping procedures to release the hemicellulose extract from commercially important wood species; extract hydrolysis, inhibitor removal ...
T. H. Wegner, C. J. Houtman, A. W. Rudie, B. L. Illman, P. J. Ince, E. M. Bilek, T. W. Jeffries   +6 more
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COMPARATIVE STUDY OF PREHYDROLYSIS METHODS FOR VEGETAL MATERIALS

Environmental Engineering and Management Journal, 2015
This paper presents the results obtained using the prehydrolysis treatments of rapeseed stalks depending on regime and the catalyst. The vegetal materials were subjected under different temperature conditions and then characterized for the yield reducing substances.
Teodor Malutan, Corina Malutan, Adina Elena Panzariu   +2 more
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Water Prehydrolysis of Moso Bamboo Dissolving Pulp

Advanced Materials Research, 2013
The chemical comcomposition and water prehydrolysis of moso bamboo were studied to prepare high grade dissolving pulp. The results indicated that the moso bamboo was an appropriate none-wood material for great dissolving pulp goten as its high cellulose content.
Tao Gu, Li Qing Weng, Guo Xin Xue
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Study on the fluorescence properties of lignocellulosic prehydrolysis liquor

Wood Science and Technology, 2019
The fluorescence properties were first probed for wood prehydrolysis liquor (PHL) in the present study. Besides fluorescence concentration quenching and pH effects, the excitation wavelength-dependent photoluminescence properties were also observed at excitation from 360 to 430 nm.
Honglei Chen, Xin Zhao, Shunli Li, Xingxiang Ji, Yu Liu, Fangong Kong   +5 more
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Prehydrolysis of hardwoods with dilute sulfuric acid

Industrial & Engineering Chemistry Product Research and Development, 1985
On etudie les effets de la temperature, de la duree, de la concentration en acide, de l'espece de bois, du rapport liqueur-bois, de la taille des particules et du sechage sur l'hydrolyse de l'hemicellulose et le rendement en oses lors de la prehydrolyse des bois ...
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Influence of acid prehydrolysis on the process of wood oxidation into vanillin and pulp

Journal of Wood Chemistry and Technology, 2020
The influence of pine wood (Pinus Sylvestris) prehydrolysis on the consumption of main reagents (O2 and NaOH) in the subsequent catalyzed oxidation of the obtained lignocelluloses into vanillin and...
Valery E. Tarabanko, Konstantin L. Kaygorodov, Dmitry O. Vigul, Nikolay Tarabanko, Yulia V. Chelbina, Marina A. Smirnova   +5 more
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The Role of Prehydrolysis in the Preparation of Zirconia—Silica Aerogels

1996
Prehydrolysis of an 'unreactive' precursor, typically a silicon alkoxide, has long been used to promote homogeneous mixing in sol-gel syntheses of mixed oxides. Studies of single oxide preparations teach that sol-gel parameters, partiularly water concentration, have a profound effect on product properties.
James B. Miller, Edmond I. Ko
openaire   +1 more source

SO2-catalysed prehydrolysis of coniferous wood for ethanol production

Biotechnology Letters, 1986
This paper reports studies of large scale, 1500 kg/h, SO2-catalysed prehydrolysis of coniferous wood chips, samples then being hydrolyzed by a wood-saccharifying enzyme system followed by fermentation to ethanol in the laboratory. Hemicellulose hydrolysis using SO2 catalyst (prehydrolysis) was found to be more effective than steam alone (autohydrolysis)
Morris Wayman, Sarad Parekh, Esteban Chornet, Ralph P. Overend   +3 more
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Improving the adsorption of lignocelluloses of prehydrolysis liquor on precipitated calcium carbonate

Carbohydrate Polymers, 2013
In this work, the adsorption of lignocelluloses of pre-hydrolysis liquor (PHL) on precipitated calcium carbonate (PCC) was studied in the presence of poly diallyldimethylammonium chloride (PDADMAC) or cationic polyacrylamide (CPAM). The results revealed that adding PCC to PHL and subsequently adding cationic polymers to PHL/PCC systems was more ...
Pedram, Fatehi, Jing, Shen, Fadia C, Hamdan, Yonghao, Ni   +3 more
openaire   +2 more sources

Prehydrolysis in Softwood Pulping Produces a Valuable Biorefinery Fraction for Material Utilization

Environmental Science & Technology, 2012
A scaled-up prehydrolysis process was elaborated to demonstrate an industrially feasible operation step in a pulping process that generates a valuable side product in addition to the cellulose pulp. The valuable side product is aqueous process liquor, a softwood hydrolysate (SWH) herein produced in 60 L batches, and its components were recovered and ...
Soheil, Saadatmand, Ulrica, Edlund, Ann-Christine, Albertsson, Sverker, Danielsson, Olof, Dahlman   +4 more
openaire   +2 more sources