Zobrazeno 1 - 10
of 29
pro vyhledávání: '"A. L. COLODETTE"'
Publikováno v:
Química Nova, Vol 38, Iss 2, Pp 221-226 (2015)
Bleached eucalypt kraft pulps are widely used in print and writing (P&W) and tissue paper manufacture. Among the quality requirements of pulp for these papers, xylan content has been controversial. The objective of this study was to evaluate the infl
Externí odkaz:
https://doaj.org/article/73666382490d40bbb8c1a82e32439622
Autor:
Fernando A. Santos, José H. de Queiroz, Jorge L. Colodette, Mauro Manfredi, Maria Eliana L. R. Queiroz, Celso S. Caldas, Filippe E. F. Soares
Publikováno v:
Química Nova, Vol 37, Iss 1, Pp 56-62 (2014)
The sugarcane industry has huge potential for biorefinery concept application, given its development in recent years. In this context, cane sugar straw has become an attractive raw material for biofuel production. This study aims to investigate the c
Externí odkaz:
https://doaj.org/article/675436a5f94946989a7f97a595d0f616
Autor:
Robisnéa A. Ribeiro, Fernando J. B. Gomes, José N. Floriani, Renato A. P. Damásio, Iara F. Demuner, Jorge L. Colodette
Publikováno v:
Química Nova, Vol 37, Iss 10, Pp 1646-1649 (2014)
It is well known that pH is an important parameter for controlling the eucalyptus pulp bleaching when using the final chlorine dioxide stage, since it affects the effectiveness of the process. Recommendations found in the literature for operating are
Externí odkaz:
https://doaj.org/article/889616f9bfbe4f068e3dd1feee882ed5
Autor:
A. L. COLODETTE, B. P. N. C. COUTINHO, Felipe dos Santos Ramiro da Silva, L. M. PRATTI, M. Z. ZOTTELE, Osman Santana Costa Junior, V. V. ROCHA, Priscila Rossi de Batista
Publikováno v:
VARIAÇÕES ANATÔMICAS ISBN: 9786553600690
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::83474a00ec26e953f729b0608c1716a3
https://doi.org/10.37885/220207899
https://doi.org/10.37885/220207899
Publikováno v:
BioResources, Vol 7, Iss 3, Pp 4046-4055 (2012)
The aim of the present work was to find an optimum kraft pulping process for olive tree pruning (OTP) in order to produce a bleachable grade pulp of Kappa number about 17. The kraft pulp produced under optimized conditions showed a viscosity of 31.5
Externí odkaz:
https://doaj.org/article/8422d5bf6eee443ca6801744cfb82102
Autor:
Fernando A. Santos, José H. de Queiróz, Jorge L. Colodette, Sergio A. Fernandes, Valéria M. Guimarães, Sebastião T. Rezende
Publikováno v:
Química Nova, Vol 35, Iss 5, Pp 1004-1010 (2012)
Sugarcane straw biomass accounts for 1/3 of the energy potential of sugarcane and represents a rich source of sugars. Studies have been intensified for the use of this biomass along with bagasse for the production of cellulosic ethanol. Development o
Externí odkaz:
https://doaj.org/article/7c9e570e4187416ab03c151aa7d080d5
Autor:
Gustavo Ventorim, Jorge L. Colodette
Publikováno v:
Ciência Florestal, Vol 15, Iss 1, Pp 93-103 (2010)
In this study, Total Chlorine Free (TCF) bleaching processes were evaluated for bleaching a secondary fiber of different origens. The samples were bleached to a target brightness of 78 % ISO. The results were interpreted on the basis of chemical cost
Externí odkaz:
https://doaj.org/article/add13a61b14e478c81ef9c59861d1bf2
Publikováno v:
BioResources, Vol 5, Iss 2, Pp 881-898 (2010)
Investigation of last stage bleaching with peracetic acid is the main subject of this paper. Proper conditions were established to apply peracetic acid as the last bleaching stage of the D(Ep)D/Paa, DHT(Ep)D/Paa, A/D(Ep)D/Paa, DHT/Q(PO)Paa and Z/ED/P
Externí odkaz:
https://doaj.org/article/83e641407f14491d9f35b31521df980c
Publikováno v:
Ciência Florestal, Vol 9, Iss 2, Pp 41-54 (2009)
In this study, ECF and TCF bleaching processes were evaluated for the bleaching of a deinked mixed office waste (MOW) pulp sample produced in a pilot plant. The sample was bleached by all processes to a target brightness of 78 % ISO minimum. The resu
Externí odkaz:
https://doaj.org/article/433f43e0458d410e986af5bbba3efe89
Autor:
Cláudio F. Lima, Luiz C. A. Barbosa, Cristiana R. Marcelo, Flaviano O. Silvério, Jorge L. Colodette
Publikováno v:
BioResources, Vol 3, Iss 3, Pp 701-712 (2008)
Pyrolysis-gas chromatography/mass spectrometry (Py-GC-MS) was applied to measure the lignin syringyl/guaiacyl (S/G) ratio in E. dunni, E. grandis, E. nitens, E. urograndis, and E. urophylla woods. A total of 41 compounds were identified, of which 11
Externí odkaz:
https://doaj.org/article/4e097627ed694f6e9da9b1b3ae08dc30