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Author : United States. Department of Energy. Technical Information Center
Publisher : Unknown
Page : 684 pages
File Size : 53,7 Mb
Release : 1985
Category : Energy industries
ISBN : STANFORD:36105013133306
A listing of forthcoming meetings, conventions, etc.
Author : Pratima Bajpai
Publisher : Elsevier
Page : 240 pages
File Size : 45,9 Mb
Release : 2013-11-21
Category : Science
ISBN : 9780124171695
Paper recycling in an increasingly environmentally conscious world is gaining importance. Increased recycling activities are being driven by robust overseas markets as well as domestic demand. Recycled fibers play a very important role today in the global paper industry as a substitute for virgin pulps. Paper recovery rates continue to increase year after year Recycling technologies have been improved in recent years by advances in pulping, flotation deinking and cleaning/screening, resulting in the quality of paper made from secondary fibres approaching that of virgin paper. The process is a lot more eco-friendly than the virgin-papermaking process, using less energy and natural resources, produce less solid waste and fewer atmospheric emissions, and helps to preserve natural resources and landfill space. Currently more than half of the paper is produced from recovered papers. Most of them are used to produce brown grades paper and board but for the last two decades, there is a substantial increase in the use of recovered papers to produce, through deinking, white grades such as newsprint, tissue, market pulp. By using recycled paper, companies can take a significant step toward reducing their overall environmental impacts. This study deals with the scientific and technical advances in recycling and deinking including new developments. Covers in great depth all the aspects of recycling technologies Covers the latest science and technology in recycling Provides up-to-date, authoritative information and cites many mills experiences and pertinent research Includes the use of biotech methods for deinking, refining. and improving drainage
Author : Anonim
Publisher : Unknown
Page : 1220 pages
File Size : 44,5 Mb
Release : 1984
Category : Paper industry
ISBN : MINN:31951D00399190C
Author : Che On Au,I. Thorn
Publisher : Springer Science & Business Media
Page : 215 pages
File Size : 49,7 Mb
Release : 2013-06-29
Category : Technology & Engineering
ISBN : 9789401707565
Commercial demands and increasing global competition have led to enormous mechanical evolution over recent years. Twin-wires, wide-nip presses, steam boxes and speed sizers have all played a part in improving both the productivity and quality of paper and board products. With the emphasis on mechanical and electrical engineering and the ever increasing pressures of quality measurement and control, little time has been available within a technical department for much reflection on the chemistry of the process. Thus there is a growing trend for the management of the wet-end to be delegated to the chemical supplier. The advances in scale of paper manufacture, environmental sensitivity and higher quality of end-product requirements have all had an impact on the chemistry of the wet-end. The increased production means, for example, that down time is more of an anathema now when capacity is critical. Similarly, with the greater rigours of quality management, anything which causes breaks or holes must be eradicated. Environmental pressures too are growing on the papermaking process. Even if consideration is restricted to only the closure of the white water circuit, it alone throws down a challenge to the potency of biocides, retention aids and other chemicals. These chemicals are detriment ally affected by an increasing concentration of water soluble pulp extractives and surfactants, adhesives and polysaccharides from broke and recycled paper.
Author : Anonim
Publisher : Unknown
Page : 456 pages
File Size : 54,9 Mb
Release : 1978
Category : Forest products
ISBN : UIUC:30112020142987
Author : Anonim
Publisher : Unknown
Page : 1170 pages
File Size : 42,5 Mb
Release : 1980
Category : Paper industry
ISBN : MINN:31951D00855411V
Author : T. Kent Kirk,Hou-Min Chang
Publisher : Butterworth-Heinemann
Page : 694 pages
File Size : 49,7 Mb
Release : 2013-10-22
Category : Technology & Engineering
ISBN : 9781483161778
Biotechnology in Pulp and Paper Manufacture: Applications and Fundamental Investigations documents the proceedings of the Fourth International Conference on Biotechnology in the Pulp and Paper Industry held in Raleigh, NC and Myrtle Beach, SC, on 16-19 May 1989. This volume contains 68 selected papers organized into seven parts. Part I deals with cell wall degradation and biopulping. It includes papers such as energy savings in biomechanical pumping, and biological degradation and delignification of rice straw. Part II on the enzyme and fungal treatment of pulps presents studies on the improvement of pulp properties by treatment with enzymes or with whole cells. Part III reports on research on new biological treatments for wastewaters produced by the created by the pulp and paper industry. Part IV discusses the conversion of pulping and papermaking byproducts to more valuable products via fermentation. Parts V and VI are devoted to fundamental studies on lignin biodegradation, and on cellulose and hemicellulose biodegradation, respectively. Part VII focuses on molecular genetics research on lignocelluloses-degrading microorganisms.
Author : Mohamed Naceur Belgacem,Antonio Pizzi
Publisher : John Wiley & Sons
Page : 704 pages
File Size : 47,6 Mb
Release : 2016-04-05
Category : Technology & Engineering
ISBN : 9781118773550
This book will focus on lignocellulosic fibres as a raw material for several applications. It will start with wood chemistry and morphology. Then, some fibre isolation processes will be given, before moving to composites, panel and paper manufacturing, characterization and aging.
Author : Anonim
Publisher : Unknown
Page : 378 pages
File Size : 48,6 Mb
Release : 1989
Category : Mineral industries
ISBN : UCBK:C049522875
Author : Anonim
Publisher : Unknown
Page : 622 pages
File Size : 52,8 Mb
Release : 1999
Category : Lumber trade
ISBN : MINN:31951P00644213C
Author : Amit Kumar,Puneet Pathak,Dharm Dutt
Publisher : Walter de Gruyter GmbH & Co KG
Page : 316 pages
File Size : 40,9 Mb
Release : 2021-07-19
Category : Technology & Engineering
ISBN : 9783110591873
This book provides recent developments and future perspectives of pulp and paper processing based on biotechnology to replace conventional environmental unfriendly chemical processes. The use of microorganism and microbial enzymes in various processes such as bleaching, deinking, refining, dissolving pulp, debarking & pitch removal, slime control, wastewater treatment and waste material valorisation are discussed.
Author : Pratima Bajpai
Publisher : Springer
Page : 258 pages
File Size : 47,5 Mb
Release : 2015-06-23
Category : Science
ISBN : 9783319187440
This book features in-depth and thorough coverage of Minimum Impact Mill Technologies which can meet the environmental challenges of the pulp and paper industry and also discusses Mills and Fiberlines that encompass “State-of-the-Art” technology and management practices. The minimum impact mill does not mean "zero effluent", nor is it exclusive to one bleaching concept. It is a much bigger concept which means that significant progress must be made in the following areas: Water Management, Internal Chemical Management, Energy Management, Control and Discharge of Non-Process Elements and Removal of Hazardous Pollutants. At the moment, there is no bleached kraft pulp mill operating with zero effluent. With the rise in environmental awareness due to the lobbying by environmental organizations and with increased government regulation there is now a trend towards sustainability in the pulp and paper industry. Sustainable pulp and paper manufacturing requires a holistic view of the manufacturing process. During the last decade, there have been revolutionary technical developments in pulping, bleaching and chemical recovery technology. These developments have made it possible to further reduce loads in effluents and airborne emissions. Thus, there has been a strong progress towards minimum impact mills in the pulp and paper industry. The minimum-impact mill is a holistic manufacturing concept that encompasses environmental management systems, compliance with environmental laws and regulations and manufacturing technologies.
Author : Pratima Bajpai
Publisher : Springer
Page : 588 pages
File Size : 43,5 Mb
Release : 2018-02-14
Category : Science
ISBN : 9789811078538
The book provides the most up-to-date information available on various biotechnological processes useful in the pulp and paper industry. The first edition was published in 2011, covering a specific biotechnological process or technique, discussing the advantages, limitations, and prospects of the most important and popular processes used in the industry. Many new developments have taken place in the last five years, warranting a second edition on this topic. The new edition contains about 35% new material covering topics in Laccase application in fibreboard; biotechnology in forestry; pectinases in papermaking; stickies control with pectinase; products from hemicelluloses; value added products from biorefinery lignin; use of enzymes in mechanical pulping.
Author : Dietrich Fengel,Gerd Wegener
Publisher : Walter de Gruyter
Page : 633 pages
File Size : 40,7 Mb
Release : 2011-08-02
Category : Reference
ISBN : 9783110839654
Author : R. McKinney
Publisher : Springer Science & Business Media
Page : 420 pages
File Size : 52,9 Mb
Release : 1994-11-30
Category : Science
ISBN : 0751400173
This book covers the technology of the recovery of secondary fibre for its use in paper and board manufacture. The editor, who has had substantial practical experience of designing and commissioning paper recycling plants all over the world, leads a team of experts who discuss subjects including sourcing, characterisation, mechanical handling and preparation and de-inking.