Hexenuronic acid and lignin effects on ozonolysis performance in different reaction pHs
| dc.contributor.author | Ventorim, Gustavo | |
| dc.contributor.author | Colodette, Jorge Luiz | |
| dc.contributor.institution | Universidade Estadual Paulista (Unesp) | |
| dc.contributor.institution | Universidade Federal de Viçosa (UFV) | |
| dc.date.accessioned | 2020-12-10T18:05:35Z | |
| dc.date.available | 2020-12-10T18:05:35Z | |
| dc.date.issued | 2006-09-01 | |
| dc.description.abstract | The effect of pH on the performance of the ozonolysis stage in pulp production was evaluated for conventional and acid treated brown and oxygen delignified eucalyptus kraft pulps. The objective was to determine separately the effects of lignin and hexenuronic acid on the performance of the ozonolysis stage. The reaction of ozone with hexenuronic acid is less sensitive to pH than the reaction of ozone with lignin. The efficiency and the selectivity of the reaction of ozone with pulp decreases after removal of hexenuronic acids. Increasing up to 7.0 the pH during the ozonolysis is viable in the sequence Z/D(EOP)D, resulting in savings of H2SO4 (8,5 kg/tsa) and NaOH (5 kg/tsa), but is not recommended in the sequence Z/ED(PO). | en |
| dc.description.affiliation | Univ Estadual Paulista, Dept Engn Ind Madeireira, BR-18409010 Itapeva, SP, Brazil | |
| dc.description.affiliation | Univ Fed Vicosa, Dept Engn Florestal, BR-36571000 Vicosa, MG, Brazil | |
| dc.description.affiliationUnesp | Univ Estadual Paulista, Dept Engn Ind Madeireira, BR-18409010 Itapeva, SP, Brazil | |
| dc.format.extent | 922-925 | |
| dc.identifier.citation | Quimica Nova. Sao Paulo: Soc Brasileira Quimica, v. 29, n. 5, p. 922-925, 2006. | |
| dc.identifier.issn | 0100-4042 | |
| dc.identifier.uri | http://hdl.handle.net/11449/195857 | |
| dc.identifier.wos | WOS:000240551700007 | |
| dc.language.iso | por | |
| dc.publisher | Soc Brasileira Quimica | |
| dc.relation.ispartof | Quimica Nova | |
| dc.source | Web of Science | |
| dc.subject | ozone | |
| dc.subject | brown pulp | |
| dc.subject | oxygen delignification | |
| dc.title | Hexenuronic acid and lignin effects on ozonolysis performance in different reaction pHs | en |
| dc.type | Artigo | |
| dcterms.rightsHolder | Soc Brasileira Quimica | |
| dspace.entity.type | Publication | |
| unesp.author.orcid | 0000-0003-0960-6757[1] | |
| unesp.author.orcid | 0000-0001-6790-6104[2] | |
| unesp.campus | Universidade Estadual Paulista (UNESP), Instituto de Ciências e Engenharia, Itapeva | pt |
| unesp.department | Engenharia Industrial Madeireira - ICE | pt |