Title:
Oxygen delignification process chemistry for Acacia

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dc.contributor.advisor Ragauskas, Arthur J.
dc.contributor.advisor Hsieh, Jeffery S.
dc.contributor.author Widiatmoko en_US
dc.contributor.committeeMember Empie, H.
dc.contributor.department Chemical Engineering en_US
dc.date.accessioned 2007-03-27T18:02:45Z
dc.date.available 2007-03-27T18:02:45Z
dc.date.issued 2006-11-10 en_US
dc.description.abstract A series of laboratory oxygen delignification were performed in this study at constant oxygen pressure and consistency to study the response of the pulp to the different process parameters, i.e. reaction temperature, reaction time, soda addition, and mechanical pretreatment, to the zero span tensile strength loss. The basic chemistry of the oxygen delignified pulps was under study including fiber charge, celluloses/hemicelluloses, and hexenuronic acid. The fiber structure such as curl, kink, fines, and fiber length were also discussed. NaOH charge can be reduced as much as 50 % by applying mechanical pretreatment to obtain the same level of selectivity at the oxygen delignification conditions described in this study.Mechanical pretreatment prior to oxygen delignification promoted a better selectivity for both Acacia mangium and MHW pulps. MHW kraft pulp did not show a significant extractive removal in all pretreatment methods during oxygen delignification. The ultrasonic pretreatment followed by filtering induced the best extractive removal among the other three methods. en_US
dc.description.degree M.S. en_US
dc.format.extent 7276486 bytes
dc.format.mimetype application/pdf
dc.identifier.uri http://hdl.handle.net/1853/13942
dc.language.iso en_US
dc.publisher Georgia Institute of Technology en_US
dc.subject Oxygen delignification en_US
dc.subject Acacia en_US
dc.subject.lcsh Wood-pulp Bleaching en_US
dc.subject.lcsh Lignin Oxidation en_US
dc.subject.lcsh Acacia en_US
dc.title Oxygen delignification process chemistry for Acacia en_US
dc.type Text
dc.type.genre Thesis
dspace.entity.type Publication
local.contributor.advisor Hsieh, Jeffery S.
local.contributor.corporatename School of Chemical and Biomolecular Engineering
local.contributor.corporatename College of Engineering
relation.isAdvisorOfPublication 60ea1b54-47a0-4829-8d67-9d9c0b177349
relation.isOrgUnitOfPublication 6cfa2dc6-c5bf-4f6b-99a2-57105d8f7a6f
relation.isOrgUnitOfPublication 7c022d60-21d5-497c-b552-95e489a06569
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