Download or read book Wood Extractives and Their Significance to the Pulp and Paper Industries written by W. E. Hillis and published by Academic Press. This book was released on 2014-05-12 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wood Extractives and their Significance to the Pulp and Paper Industries focuses on the promotion of the study of the biochemistry of wood extractives and to elaborate on the effects these materials may pose to the manufacture of pulp and paper. The publication first elaborates on wood, distribution and formation of polyphenols within the tree, and the simple polyphenolic constituents of plants. Discussions focus on the factors affecting the amounts of polyphenols present in living tissues, glycosidic combination, flavonols, anthocyanins, and leucoanthocyanins, formation of carbohydrates in the tree, types of polyphenols in different tissues of uninjured trees, and variation in structure and properties of wood. The text then examines lignans and condensed and hydrolyzable tannins. The manuscript takes a look at the alicyclic acid precursors of polyphenols, biosynthesis of polyphenols, and tropolones. Topics include tropolones occurring in wood, polymeric polyphenols, synthesis of pre-aromatic compounds, shikimic acid, and quinic acid. The book then ponders on the influence of extractives on the pulping of wood and the influence of extractives on the color of ground wood and newsprint. The publication is a valuable reference for researchers interested in the processes and methodologies involved in the manufacture of pulp and paper.
Download or read book Analytical Methods in Wood Chemistry Pulping and Papermaking written by Eero Sjöström and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: In its broadest sense, and according to the traditional conception, wood chemistry is a comprehensive discipline, ranging from fundamental studies to practical applications. The manifold constituents, located in different morphological regions in the wood, results in an extreme complexity of wood chemistry. Ever more sophisticated endeavors needing fundamental studies and advanced analytical methods are necessary in order to delve deeper into various problems in pulping and papermaking. Gradually, new, improved ana lytical methods, originally developed for research purposes, are currently replacing many of the old "routine" methods in practical applications. Because of the expanse of the subject, an attempt to write a book of this size about analytical methods seems, perhaps, too ambitious. Of course, a whole book series of several volumes would be necessary to cover this topic completely. However, there is undoubtedly a need for a more condensed presentation which does not go into experimental details, but is limited to the basic principles of the analytical methods and illustrates their applica tions. The emphasis is on more advanced and potential methods, and partic ularly on those based on different types of spectroscopy and chromatography.
Download or read book Utilization of the Southern Pines written by Peter Koch and published by . This book was released on 1972 with total page 752 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book U S Environmental Protection Agency Library System Book Catalog Holdings as of July 1973 written by United States. Environmental Protection Agency. Library Systems Branch and published by . This book was released on 1974 with total page 748 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Annual Plant Sources of Fibres Nanocellulose and Cellulosic Derivatives written by Ramzi Khiari and published by Springer Nature. This book was released on 2023-07-01 with total page 553 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gives an overview of the processing, properties, and applications of fibers and cellulose derivatives obtained from annual plant materials in the formation of non-wood source of pulp. The book comprises illustrations and tables summarizing the latest research on the production of fibers and cellulose derivatives using several key methods and/or characterization techniques. This book collates the information and knowledge of new ways to prepare cellulosic derivatives and describe the concepts and architecture of fibers obtained from annual plants. This book caters to researchers, policymakers, and industrial practitioners who are interested in natural fibers as a way to preserve the forest resource and to satisfy the increasing demand in pulps.
Download or read book Gross Influences on Heartwood Formation in Black Walnut and Black Cherry Trees written by Neil D. Nelson and published by . This book was released on 1976 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Natural Products of Woody Plants written by John W. Rowe and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 1275 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wood as found in trees and bushes was of primary importance to ancient humans in their struggle to control their environment. Subsequent evolution through the Bronze and Iron Ages up to our present technologically advanced society has hardly diminished the importance of wood. Today, its role as a source of paper products, furniture, building materials, and fuel is still of major significance. Wood consists of a mixture of polymers, often referred to as lignocellulose. The cellulose micro fibrils consist of an immensely strong, linear polymer of glucose. They are associated with smaller, more complex polymers composed of various sugars called hemicelluloses. These polysaccharides are embedded in an amorphous phenylpropane polymer, lignin, creating a remarkably strong com posite structure, the lignocellulosic cell wall. Wood also contains materials that are largely extraneous to this lignocellulosic cell wall. These extracellular substances can range from less than 1070 to about 35% of the dry weight of the wood, but the usual range is 2% -10%. Among these components are the mineral constituents, salts of calcium, potassium, sodium, and other metals, particularly those present in the soil where the tree is growing. Some of the extraneous components of wood are too insoluble to be ex tracted by inert solvents and remain to give extractive-free wood its color; very often these are high-molecular-weight polyphenolics.
Download or read book Agriculture Handbook written by and published by . This book was released on 1972 with total page 748 pages. Available in PDF, EPUB and Kindle. Book excerpt: Set includes revised editions of some issues.
Download or read book Utilization of Hardwoods Growing on Southern Pine Sites written by Peter Koch and published by . This book was released on 1985 with total page 1430 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Utilization of Hardwoods Growing on Southern Pine Sites The raw materials written by Peter Koch and published by . This book was released on 1985 with total page 1450 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bowing in Roof Joists Induced by Moisture Gradients and Slope of Grain written by Roger L. Tuomi and published by . This book was released on 1975 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Primary Wood Processing written by John C.F. Walker and published by Springer Science & Business Media. This book was released on 2006-09-13 with total page 603 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is primarily a general text covering the whole sweep of the forest industries. The over-riding emphasis is on a clear, simple interpretation of the underlying science, demonstrating how such principles apply to processing operations. The book considers the broad question "what is wood?" by looking at the biology, chemistry and physics of wood structure. Wood quality is examined, and explanations are offered on how and why wood quality varies and the implications for processing. Finally, various "industrial processes" are reviewed and interpreted. All chapters have been written by specialists, but the presentation targets a generalist audience.
Download or read book Utilization of the Southern Pines The raw material written by Peter Koch and published by . This book was released on 1972 with total page 752 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Utilization of Residual Forest Biomass written by Pentti Hakkila and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt: An increase in the demand for wood results in improved recovery and less residual biomass in the forests. Paradoxically, interest in forest residue as a renewable source of raw material seems to be in a reverse ratio to its availability in a certain area. Finland and Sweden are probably more dependent on forestry and forest in dustries than any other developed countries in the world. A sufficiency of raw ma terial for integrated forest industries is vital for the national economy of both countries, and a great deal of attention is being paid to the long-term potential of unutilized biomass left behind in logging operations. Furthermore, since these countries possess no reserves of fossil fuels, and since their per-capita consump tion of primary energy is exceptionally high, they also consider unmerchantable forest biomass a realistic source of indigenous energy. A joint Nordic research project on harvesting and utilization of logging residue was carried out in 1969-1976 under the auspices of the Nordic Research Council on Forest Operations. This fruitful cooperation soon gave rise to related national projects in Sweden, Finland, Norway, and Denmark, stimulating further research and producing practical applications. Concurrently, particularly after the worldwide energy crisis in 1973, research on all aspects of utilization of forest bio mass mushroomed in the United States, Canada, and the Soviet Union. An ex plosive increase occurred in both the number and diversity of biomass studies.
Download or read book Forest Products and Wood Science written by Rubin Shmulsky and published by John Wiley & Sons. This book was released on 2018-12-31 with total page 699 pages. Available in PDF, EPUB and Kindle. Book excerpt: The updated seventh edition of the classic text on wood science and forestry The seventh edition of Forest Products and Wood Science: An Introduction offers a fully revised and updated review of the forest products industry. This classic text contains a comprehensive review of the subject and presents a thorough understanding of the anatomical and physical nature of wood. The authors emphasize its use as an industrial raw material. Forest Products and Wood Science provides thorough coverage of all aspects of wood science and industry, ranging from tree growth and wood anatomy to a variety of economically important wood products, along with their applications and performance. The text explores global raw materials, the increasing use of wood as a source of energy and chemicals and environmental implications of the use of wood. This edition features new material on structural composites, non-structural composites, durability and protection, pulp and paper, energy and chemicals, and global raw materials. This seventh edition of the classic work: Contains new information on a variety of topics including: structural composites, non-structural composites, durability and protection, pulp and paper, energy and chemicals and global raw materials Includes a fully revised text that meets the changing needs of the forestry, engineering, and wood science academics and professionals Presents material written by authors with broad experience in both the private and academic sectors Written for undergraduate students in forestry, natural resources, engineering, and wood science, as well as forest industry personnel, engineers, wood-based manufacturing and using professionals, the seventh edition of Forest Products and Wood Science updates the classic text that has become an indispensable resource.
Download or read book Annual Report of the Commonwealth Scientific Industrial Research Organization written by Commonwealth Scientific and Industrial Research Organization (Australia) and published by . This book was released on 1959 with total page 658 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Organic Chemicals From Biomass written by Irving S. Goldstein and published by CRC Press. This book was released on 2018-01-18 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: The biomass emphasis in on material of terrestrial plant origin, although principles are directly transferable to aquatic plants with similar components. Products of animal origin are not included. Since animal fats and oils are not considered, it seemed logical to exclude vegetable oils as well. Biomass emphasis is on material of terrestrial plant origin, although the principles are directly transferrable to aquatic plants with similar components.
