Quantifying the Effect of Extractives from Mountain Pine Beetle-attacked Lodgepole Pine for Pulp and Papermaking
Quantifying the Effect of Extractives from Mountain Pine Beetle-attacked Lodgepole Pine for Pulp and Papermaking

Author: Paul Alexandre Bicho

Publisher:

Published: 2008

Total Pages: 70

ISBN-13:

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The pulping of mountain pine beetle-killed wood can impact tall oil recovery, and severe foaming events exist. These effects may be related to changes in the levels and profiles of extractives in beetle-killed wood. This report summarizes existing knowledge regarding the influence of mountain pine beetle attack on extractives. It expands on this knowledge by using PLS-DA modeling to follow changes in extractives profiles with unattacked-green, red and grey stage woods. Result show that red stage pine has lower levels of glycerides and pimaric acid, but higher levels of sterols, than unattacked green wood. Grey stage woods have extractives profiles that are comparable to unattacked wood, likely due to the biodegradation of glycerides or to abiotic effects. While extractives are implicated in the foaming tendency of TMP pressates and black liquors from beetle-infested wood, other factors related to wood chemistry are just as important when addressing the foaming issue.

Operational Extractives Management from Mountain Pine Beetle-attacked Lodgepole Pine for Pulp and Papermaking
Operational Extractives Management from Mountain Pine Beetle-attacked Lodgepole Pine for Pulp and Papermaking

Author: Larry H. Allen

Publisher:

Published: 2007

Total Pages: 56

ISBN-13:

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"This report addresses the impact of mountain pine beetle infestation on extractives in pulp and paper mills and their impact on process operation. The main concerns addressed include: extractives in pulp, pitch control, friction properties of paper, effluent treatment, and soap separation in the draft chemical recovery system."--Document.

Waste Fatty Acid Addition to Black Liquor to Decrease Tall Oil Soap Solubility and Increase Skimming Efficiency in Kraft Mills Pulping Mountain Pine Beetle-infested Wood
Waste Fatty Acid Addition to Black Liquor to Decrease Tall Oil Soap Solubility and Increase Skimming Efficiency in Kraft Mills Pulping Mountain Pine Beetle-infested Wood

Author: Victor Charles Uloth

Publisher:

Published: 2009

Total Pages: 34

ISBN-13:

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Kraft pulping of softwoods converts the free resin and fatty acids and a large percentage of the triglycerides in wood into their sodium salts or soaps. The recovered soap is either burnt in the recovery boiler or converted into a blend of fatty and resin acids and neutrals, known as crude tall oil, through acidulation in a tall oil plant. Recent soap solubility tests and black liquor analyses, using black liquor and soap samples from four BC mills and one Alberta mill pulping very little beetle-killed wood, indicate that tall oil production at mills pulping mountain pine beetle-infested wood could drop substantially due to higher soap solubility in black liquor, a reduced tendency for the soap to "float" off in storage tanks and skimmers, and lower soap acid numbers. This document reports on the investigation of a means to economically increase soap recovery by increasing the fatty acid/resin acid ratio of the product tall oil.--Includes text from document.

Impact of Mountain Pine Beetle-attacked Lodgepole Pine Logs on Veneer Processing
Impact of Mountain Pine Beetle-attacked Lodgepole Pine Logs on Veneer Processing

Author: Brad Wang

Publisher:

Published: 2009

Total Pages: 28

ISBN-13:

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The issue of how to maximize the value recovery from beetle-attacked pine wood is critical to the wood panel industry in British Columbia. This paper discusses the pilot plant tests and mill trials that were conducted to quantify the impact of using mountain pine beetle (MPB)-attacked lodgepole pine (Pinus contorta Douglas) wood on green veneer processing to determine of it makes economic sense to sort and process MPB logs separately from normal logs of SPF (spruce-lodgepole pine-alpine fir) mix for plywood manufacturing.--Includes text from document.

Sustainable Management of Pinus Radiata Plantations
Sustainable Management of Pinus Radiata Plantations

Author: Donald J. Mead

Publisher: Food & Agriculture Organization of the UN (FAO)

Published: 2013

Total Pages: 0

ISBN-13: 9789251076347

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"Pinus radiata (radiata pine) is a versatile, fast-growing, medium-density softwood, suitable for a wide range of end-uses. Its silviculture is highly developed, and is built on a rm foundation of over a century of research, observation and practice. Radiata pine is often considered a model for growers of other plantation species. This book explores current knowledge of, and experience with radiata pine forest plantation management and examines its long-term sustainability. Radiata pine management needs to integrate the biological aspects of tree-growing, with socio-economics, management objectives, practical considerations and other constraints and opportunities. Although stands of radiata pine may appear to be simple, they are actually quite complex ecosystems because they contain large, long-lived trees that change dramatically over time and interact in changing ways with the environment and with other organisms. The focus of this book is on the principles and practices of growing radiata pine sustainably. It also looks ahead to emerging challenges facing radiata pine plantation management, such as the effects of climate change, new diseases and other threats, and meeting changing product needs and societal demands."--Page 4 of cover.