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Dissertations / Theses on the topic 'Environmental aspects of Wood-pulp industry'

Author: Grafiati

Published: 4 June 2021

Last updated: 27 July 2025

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1

Baker, Scott Alan. "Activated sludge biotreatability of pulp and paper bleach wastes : investigation of bleaching options." Thesis, Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/21647.

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2

Fortin, Nathalie. "Molecular characterization of dechlorination potential in kraft pulp mill effluent treatment systems." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=27317.

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Many low molecular weight chlorinated organic compounds produced by the pulp and paper industry during kraft bleaching of the wood pulp are toxic. Mass balance studies suggest that mineralization of chlorinated organics is occurring in pulp and paper mill wastewater treatment systems. To understand the nature of dechlorination activity, molecular tools such as oligonucleotide primers and corresponding DNA probes were developed to monitor the presence of microorganisms possessing key genes (dehalogenases) responsible for the degradation of chloroaliphatic organics in kraft pulp mill effluent tr

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3

Hailu, Atakelty Gebremedihen. "Environmentally sensitive analysis of economic performance, productivity and efficiency in the Canadian pulp and paper industry, 1959-1994." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ34772.pdf.

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4

Brogdon, Brian N. "Effects of ethanol media on chlorine dioxide and extraction stages for kraft pulp bleaching." Diss., Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/7014.

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5

Rigby, Tracey. "Development of a capillary electrophoretic method for the separation and detection of resin acids." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0035/MQ64439.pdf.

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6

Wartena, Ryan Craig. "Generation of sodium oxide and discharge of carbon by the electrolysis of multi-component molten salt systems : a recycle process for kraft pulping chemicals." Diss., Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/10281.

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7

Bauer, Elizabeth Nanette. "MODIFICATION OF AN EXISTING BENTHAL MODEL FOR PAPER MILL WASTES." Thesis, The University of Arizona, 1985. http://hdl.handle.net/10150/275443.

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8

Sullivan, Elizabeth Carol. "The use of advanced treatment methods for removal of color and dissolved solids from pulp and paper wastewater." Thesis, Virginia Polytechnic Institute and State University, 1986. http://hdl.handle.net/10919/94476.

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This study investigated the use of activated carbon and ion exchange for the removal of color and dissolved solids from pulp and paper wastewater generated by the Union Camp Corporation mill in Franklin, Virginia. The objective of the treatment was to provide a high quality effluent suitable for direct recycling. This advanced treatment followed pretreatment by lime, alum, or ferric chloride. Required effluent quality was defined as being 5 Pt-Co units color and 75 mg/L chloride. Granular and powdered carbons, manufactured by the Westvaco Corporation, were utilized in the study. The ion exchan

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9

Bhathena, Jasmine. "The physical and physiological effects of nitrogen and phosphorus limitation on a pulp and paper mill effluent biotreatment microbial community /." Thesis, McGill University, 2004. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=80228.

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The influence of nitrogen (N) and phosphorus (P) limitation on pulp and paper mill activated sludge (AS) floc properties was studied using a bioreactor fed with synthetic Kraft mill effluent. The bioreactor and synthetic effluent were designed and shown to perform like the real mill system providing the AS, establishing the in vivo relevance of the results. Limitation of either N or P produced inadequate effluent biotreatment, shown by poor BOD5 and suspended solids removal, and by decreased biomass health, performance, and floc settling. Greatly enhanced poly-beta-hydroxybutyrate (PHB)

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10

Gauthier, Francis. "Study of coliform bacteria in Canadian pulp and paper mill water systems : their ecology and utility as health hazard indicators." Thesis, McGill University, 2000. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=33401.

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Coliform bacteria have long been used to indicate fecal contamination of food, water, and solid surfaces, and thus the presence of a health hazard. In this study, the in-mill water and external effluent treatment systems of seven typical Canadian pulp and paper mills were shown to support the growth of numerous coliforms, especially Klebsiella spp, Escherichia coli, Enterobacter spp., and Citrobacter spp . Mill coliforms were shown to be not just simple transients from feedwater or furnish (wood), but to be continuously growing, especially in the primary clarifiers. Therefore, coliforms and fe

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11

Hart, Peter W. "Formation and release of adsorbable organic halogens during kraft pulp bleaching." Diss., Georgia Institute of Technology, 1992. http://hdl.handle.net/1853/11219.

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12

Patterson, Shane, and University of Lethbridge Faculty of Arts and Science. "The agronomic benefit of pulp mill boiler wood ash." Thesis, Lethbridge, Alta. : University of Lethbridge, Faculty of Arts and Science, 2001, 2001. http://hdl.handle.net/10133/127.

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Land application of wood ash is becoming more appealing, as a disposable alternative, to landfilling options. It is estimated that 110,000 tonnes of wood ash is produced annually in Alberta by cogeneration systems, a large percentage produced in Central and Peace River Regions of Alberta. Alkaline (pH-13) properties and nutrient content of wood ash provides an alternative for the acidic and nutrient deficient soils within these regions. The objective of this field study was to determine the effect wood ash applications would have under field conditions on: the chemical and physical properties

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13

Stevens, Jefferson Allen. "Fundamental aspects of hydrogen peroxide bleaching of kraft pulp in ECF and TCF bleaching sequences." Diss., Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/10269.

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14

Larson, Robert Blake. "Attenuation of constituents from paper-pulp mill wastewater ponded on clay soil under natural environmental conditions." Thesis, The University of Arizona, 1986. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu_e9791_1985_367_sip1_w.pdf&type=application/pdf.

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15

Agrawal, Chhaya. "The effectiveness of TAED on peroxide bleaching." Thesis, Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/12126.

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16

Forsström, Jennie. "Fundamental aspects on the re-use of wood based fibres : porous structure of fibres and ink detachment /." Stockholm, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-84.

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17

Rothpfeffer, Caroline. "From wood to waste and waste to wood : aspects on recycling waste products from the pulp mill to the forest soil /." Uppsala : Dept. of Forest Soils, Swedish University of Agricultural Sciences, 2007. http://epsilon.slu.se/200783.pdf.

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18

Gill, Christopher Ellis. "Environmental contaminants, food availability, and reproduction of bald eagles, Haliaeetus leucocephalus, on Vancouver Island, British Columbia." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ37537.pdf.

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19

Ager, Patrick. "Recycle of complexing reagents during mechanical pulping." Thesis, McGill University, 2003. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=82813.

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The stability of hydrogen peroxide (H2O2) is a critical factor for the brightening of mechanical pulps. Inorganic ions, including Fe, Mn and Cu catalytically decompose H2O2. These troublesome metals promote the rapid transformation of H2O2 to nonselective hydroxyl radicals that degrade the cellulose fibres and decrease yields.<br>The interaction of aqueous metal•complexes with magnesium metal (Mg°) or bimetallic mixtures of magnesium with either palladium (Pd°/Mg°) or silver (Ag°/Mg°) were optimized to remove metals (Mn, Cu and Fe) from solution with concomitant release of the complexi

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20

Jonsson, Diana. "Methods for measuring mercury in gas ebullition from fiber banks : A literature study." Thesis, KTH, Hållbar utveckling, miljövetenskap och teknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-294107.

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Mercury contamination is an environmental issue with high priority due to its high toxicity. In addition to the atmospheric deposition, several lakes and rivers in Sweden are contaminated as a result from wood and pulp-fiber industries which stretches back 200 years. In Luleå, Sweden, a former groundwood industry, Karlshäll, has contributed to mercury pollution in the sediments of Notviken, a small bay connected to Luleå River and the Bothnian Sea, through release of process water. Industrial release of chemicals and wood pulp have resulted in a special type of sediment called fiber banks.

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21

Rosendal, Linnea. "Biogent kol i träbaserade produkter från svensk skogsindustri och kolets inbindningstid : En analys av potentialen att öka inbindningstiden i det årliga tillskottet av produkter." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-415431.

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Nivåerna av växthusgaser i atmosfären har ökat drastiskt de senaste århundradet, till följd av mänsklig aktivitet. Det krävs en stor omställning för oss människor om klimatförändringarna ska motverkas och för att konsekvenserna för planeten inte ska bli allt för stora. Koldioxid är en av de viktigaste växthusgaserna och skogen är en viktig del i balansen av koldioxid i atmosfären genom att växter och träd binder in koldioxid och lagrar biogent kol i biomassan. Rundvirke kan användas för att producera en mängd olika produkter med olika användningsområden och varierande livslängd och det finns b

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22

Simão, Geraldo. "Estudo de aperfeiçoamento do sistema de tratamento de condensado contaminado da produção de celulose." Universidade Federal de Viçosa, 2014. http://locus.ufv.br/handle/123456789/5948.

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Made available in DSpace on 2015-03-26T14:01:18Z (GMT). No. of bitstreams: 1 texto completo.pdf: 1024607 bytes, checksum: d790e435733c38f369dea4a0231609b0 (MD5) Previous issue date: 2014-07-31<br>The industry of Kraft pulp production process generates large amount of foul condensate. Such condensates are potential pollutants impacting on investment, cost of operation and maintenance, power consumption, cost of chemical in the process, water consumption, effluent generation and odor. Systems useful for treatment of foul condensates from a Kraft pulp mill are formed by stripping systems which

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23

Pelletier, Chloé. "Analyse environnementale et économique des filières bois-énergie." Thesis, Université de Lorraine, 2017. http://www.theses.fr/2017LORR0331/document.

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Le but de cette thèse est de conduire l’analyse environnementale et économique de plusieurs filières bois-énergie basée sur des technologies de combustion variées. Les bilans matière et énergie des filières s’appuient sur des modèles de croissance de la forêt, et sur des modèles de combustion basés sur les émissions de poêles et chaudières en conditions réelles. La croissance de la forêt est simulée pour le pin des Landes et le hêtre de Lorraine selon plusieurs itinéraires de gestion sylvicole. Les étapes de récolte, transformation, et transport, ainsi que les données économiques sont basées s

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24

Pelletier, Chloé. "Analyse environnementale et économique des filières bois-énergie." Electronic Thesis or Diss., Université de Lorraine, 2017. http://www.theses.fr/2017LORR0331.

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Le but de cette thèse est de conduire l’analyse environnementale et économique de plusieurs filières bois-énergie basée sur des technologies de combustion variées. Les bilans matière et énergie des filières s’appuient sur des modèles de croissance de la forêt, et sur des modèles de combustion basés sur les émissions de poêles et chaudières en conditions réelles. La croissance de la forêt est simulée pour le pin des Landes et le hêtre de Lorraine selon plusieurs itinéraires de gestion sylvicole. Les étapes de récolte, transformation, et transport, ainsi que les données économiques sont basées s

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25

Moodley, Brenda. "Characterisation of SAPPI SAICCOR pulp mill's effluent." Thesis, 2001. http://hdl.handle.net/10413/5610.

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SAPPI SAJCCOR, whose factory is situated south of Durban, South Africa, is one of the few paper and pulp mills that uses the acid sulphite process with calcium and magnesium bases to produce a high-grade cellulose pulp. Four streams of effluent, namely, the calcium - spent liquor stream, the magnesium condensate stream and two streams from the bleaching effluent are produced during this sulphite pulping process and they contain a variety of organic compounds extracted from the wood. Characterisation of the effluent was based on isolation using column chromatography and identification using NMR

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26

Bissoon, Sadhvir. "Evaluation of the bleach-enhancing effects of xylanases on bagasse-soda pupil." Thesis, 2002. http://hdl.handle.net/10321/2834.

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Submitted in fulfillment of the requirements for the Degree of Doctor of Technology: Biological Sciences, M.L. Sultan Technikon, 2002.<br>The extent of diffusion and surface modification of a purified 23.6 kDa xylanase isolated from Thermomyces lanuginosus on bagasse pulp was evaluated. Polyclonal anti-xylanase antibodies were raised in two rabbits and in conjunction with immunogold labeling and microscopic studies enzyme diffusion and degradation studies were performed. The purity of the xylanase was confirmed by SDS-PAGE and western blots confirmed the antigen-antibody hybrid on the nitroce

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27

Inch, Hilary. "Ex ante assessment of secondary impacts of environmental regulation: case study--organochlorines in the Canadian pulp and paper industry." Thesis, 1993. http://hdl.handle.net/2429/1963.

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This thesis examines how the secondary effects of environmental regulations are assessed before the regulations are proclaimed. Negative secondary effects of a policy (such as regulation) may outweigh direct benefits; it is important that secondary effects are clearly assessed. The case study is the control of organochlorines in the Canadian pulp and paper industry via federal regulation of dioxins and furans and British Columbia's regulation of Adsorbable Organic Halogen (AOX). The thesis is founded upon the premise that sustainability must be an integral consideration. A systems approach is

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28

Choge, Simon Kosgei. "Study of economic aspects of the woodcarving industry in Kenya : implications for policy development to make the industry more sustainable." Thesis, 2000. http://hdl.handle.net/10413/5296.

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This thesis reports on the findings of a three year study on the economIc aspects of the woodcarving industry in Kenya. Woodcarving provides one of the most important uses of wood in Kenya both in terms of economic returns (export value estimated at US$ 20 million annually) and generation of self-employment opportunities (60,000 carvers and estimated 350,000 dependants). The industry is facing an imminent collapse owing to the depletion of prime carving tree species which has supported it since 1919. The key objectives of the study were; (a) To quantify the diversity of species in trade (volum

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29

Tibbets, Ashlee. "Implications of the 2008 Lacey Act amendments : insights from the wood products industry." Thesis, 2011. http://hdl.handle.net/1957/26108.

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Export-oriented illegal logging has been recognized as a major global problem in environmental, social, and economic terms. It has been argued that export-oriented illegal logging does not benefit the community or government that should be benefited by its own natural resources. The emergence of policy initiatives targeting illegal logging could have the potential to increase the competitiveness of legally sourced timber products by removing illegal products from the market of the consuming country. The US Lacey Act amendments of 2008 set a precedent for the global trade in plants and plant p

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30

Stephens, Michael Leslie. "The economics of multiple-use forestry with reference to wood production and conservation of the Leadbeater's possum in the central highlands of Victoria." Thesis, 1997. http://hdl.handle.net/1885/145163.

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31

Naidoo, Lenny. "Wood chip exports and the challenges faced by private pulpwood farmers in Southern KwaZulu-Natal." Thesis, 2011. http://hdl.handle.net/10413/6394.

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The South African forestry industry has contributed significantly to the economic growth of the country by the planting of trees and the processing of these trees for the export market. With the increased demand for wood chips, the wood chip industry is concerned that the plantation resource that is currently available may not be adequate to fulfil the production required for future wood chip export. The purpose of this study is to examine the trends in wood chips exports from the Port of Durban and to examine the stability and growth of private pulpwood production in Southern KwaZulu-Natal. T

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32

McPherson, Mamosa Eileen. "Participatory monitoring and evaluation of marine water quality, a case study of Sappi Saiccor, Umkomaas." Thesis, 2002. http://hdl.handle.net/10413/4599.

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Previously, issues concerning the use and conservation of the natural resources were restricted to certain groups of individuals, normally those considered to be scientific experts. However with the emergence of sustainable development and the adoption of its principles therein, there has been increased community concern over environmental quality issues resulting in pressure for transparency in environmental decision-making processes. The result has been a dramatic expansion in the number of organisations at the local, national and global scales committed to environmental improvement. This in

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