3 edition of Wood extractives and their significance to the pulp and paper industries. found in the catalog.
Wood extractives and their significance to the pulp and paper industries.
W. E. Hillis
|LC Classifications||TP997 .H5|
|The Physical Object|
|Number of Pages||513|
|LC Control Number||62013100|
Pulp, paper and wood industries. They serve in their personal capacity and at their own expense, reflecting broadly the interests of producer and consumer countries and representative of all regions. Representatives of international financial institutions, civil society, including the private sector, may be invited by the Committee to. Other articles where Wood pulp is discussed: wood: Pulp and paper: Wood is the main source of pulp and paper. Preliminary production steps are debarking and chipping. Pulping processes are of three principal types: mechanical, or grinding; chemical, or cooking with added chemicals; and semichemical, or a combination of heat or chemical pretreatment.
In Hillis co-edited, and co-wrote, an influential book Wood Extractives and their Significance to the Pulp and Paper Industries. It was shown that extractives were responsible for various. Pulp, paper and wood industries. send by email. Activities. The main activities related to forest industry consist in providing assistance and transfer of technology in the development, planning and management of wood-based industries, in developing countries and countries with economies in transition.
Paper and Wood PulpIntroductionPaper is one of the most versatile products of everyday life, with hundreds of different uses. It is vital for comunication and education, as well as in sanitary and household applications and packaging. Paper is basically a mat of fibers derived from plant material, and it is mostly made of fibers derived from wood. Production of recycled paper is resource related and is tracked by comparing nonwood fiber input with wood fiber input. The pulp and paper industry is the third most energy-intensive industry in the United States. Metrics used to track energy usage are total renewable energy per ton of product and total nonrenewable energy per ton of product.
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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.
Purchase Wood Extractives and Their Significance to the Pulp and Paper Industries - 1st Edition. Print Book & E-Book. ISBNBook Edition: 1. Wood Extractives and Their Significance to the Pulp and Paper Industries.
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Wood Extractives and Their Significance to the Pulp and Paper Industries. Additional Physical Format: Online version: Hillis, W.E.
Wood extractives and their significance to the pulp and paper industries. New York, Academic Press, The first 4 sections cover: Wood; Polyphenols in the tree; The biosynthesis of polyphenols; and Other extractives in wood. The 5th section, Influence on pulp and paper manufacture, includes chapters dealing with the influence of extractives on the pulping of wood (J.
Gardner et al.), and on the colour of groundwood and newsprint (W. Hillis et al.) and The influence of resins on paper. Wood Extractives and Their Significance to the Pulp and Paper Industries [Hillis, W. E.] on *FREE* shipping on qualifying offers.
Wood Extractives and Their Significance to the Pulp and Paper IndustriesAuthor: W. Hillis. Wood extractives and their significance to the pulp and paper industries.
New York, Academic Press, (DLC) (OCoLC) Material Type: Document, Internet resource: Document Type: Internet Resource, Computer File: All Authors / Contributors: W E Hillis. This chapter explains the influence of extractives on the pulping of wood.
There are three principal types of pulping processes: (1) mechanical, (2) chemical, and (3) semichemical. In the mechanical process, the wood is usually reduced to the fibrous state by means of a by: 9. 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 PULP AND PAPER MILL Although there are several chemical and mechani-cal pulping methods used for delignifying wood (table 2-l), separating fibers, and removing discol-oration, all integrated pulp and paper mills involve the same general steps in the manufacture of pulp and paper.
These steps include: 1) raw material. Hillis WE Wood extractives, and their significance to the pulp and paper industry. Academic Press, New York, pp Google Scholar Holmbom B Improved gas chromatographic analysis of fatty and resin acid mixtures with special reference to tall oil.
The pulp and paper industry has been criticized by environmental groups like the Natural Resources Defense Council for unsustainable deforestation and clearcutting of old-growth forest.
The industry trend is to expand globally to countries like Russia, China and Indonesia with low wages and low environmental oversight. According to Greenpeace, farmers in Central America illegally rip up vast.
CHARACTERISATION AND QUANTIFICATION OF WOOD EXTRACTIVES AND THEIR IMPACT ON PITCH By PRINISHA MOODLEY Submitted in fulfilment of the academic requirements for the degree of Master of Science in the School of Chemistry, University of KwaZulu-Natal Durban January wood extractives are, however, carried over to the bleach plant with the brownstock pulp.
In the bleach plant such wood extractives will, to various degrees, react with the bleaching chemicals to form oxidized and modified extractives . A study by Bouchard et al  showed that pressing and washing of aspen kraft pulp after oxygenFile Size: 45KB. This method describes a procedure for determining the amount of solvent-soluble, non-volatile material in wood and pulp.
Two different solvent systems may be employed, the selection depending on the safety and reproducibility requirements of each particular laboratory. Dichloromethane extraction gives lower amounts of extractives.
 It is well known that lipophilic wood extractives that are present, even in minor amounts, in wood may affect the efficiency of wood processing for pulp and paper production, being. Gardner, J.A.F. and Hillis, W.E. () The influence of extractives on the pulping of wood, in Wood Extractives and their Significance to the Pulp and Paper Industries (ed.
W.E. Hillis), Academic Press, New York, pp – Google ScholarCited by: Solvent extractives of wood and pulp 1. Scope This method describes a procedure for determining the amount of solvent-soluble, non-volatile material in wood and pulp. Two diff erent solvent systems may be employed, the selection depending on the safety and reproducibility requirements of each.
Wood extractives, commonly referred to as pitch, cause major problems in the manufacturing of pulp and paper. Treatment of nonsterile southern yellow pine chips for 14 days with Pseudomonas fluorescens, Pseudomonas sp., Xanthomonas campestris, and Serratia marcescens reduced wood extractives by as much as 40%.
Control treatments receiving only water lost 11% of Cited by: Although, the bulk of paper originates from trees (55% from virgin pulp, and 38% from recycled wood-based paper – with 7% from non-tree sources), only about one ﬁ fth of all tree harvest goes.
The pulp and paper industry, which includes products such as office and catalog paper, glossy paper, tissue and paper-based packaging, uses over 40 percent of all industrial wood traded globally. As one of the largest industrial sectors in the world, the pulp and paper industry has an .The Pulp, Paper and Wood Industry comprises assets owned by enterprises engaged in the manufacture and distribution of products derived from wood fiber and recycled wood fiber-based products.
The industry is categorized into four sub-sectors, which are Pulp, Paper, Wood and Converting. In addition to traditional wood and paper products, the.TAPPI T Extractives soxlet is used to determine the amount of solvent-soluble, non-volatile material in wood and pulp.
Various of solvents may be used. Testing Services for the paper, nonwovens, packaging, and consumer products industries.