Results 21 to 30 of about 52,657 (182)

Formic Acid Pulping and TCF Bleaching of Cassava Stalks

open access: yesDhaka University Journal of Applied Science and Engineering, 2022
The formic acid (FA) pulping process is well-known for its advantage to overcome the problems caused by the presence of high silica and fines content of agriculture residues during pulping. In this context a new and unconventional raw material, cassava stalk was pulped using formic acid followed by treatment withperoxyformic acid (PFA) treatment was ...
Taslima Ferdous   +2 more
openaire   +1 more source

Delignification’s Effect on Microcrystalline Cellulose Obtained from Oil Palm Empty Fruit Bunch Fibres

open access: yesBioResources, 2023
The effects of acidified chlorite (NaClO2) and totally chlorine free (TCF) bleaching were evaluated relative to the properties of microcrystalline cellulose (MCC) fabricated from oil palm empty fruit bunch fibres (OPEFB). The MCC properties were analyzed
Najieha Norazli   +4 more
doaj   +2 more sources

Influence of bleaching technologies on the aerobic biodegradability of effluents from Eucalyptus kraft pulps factories

open access: yesBrazilian Archives of Biology and Technology, 1999
Aerobic biodegradability of effluents from different Eucalyptus kraft pulp bleaching processes was studied. Bleaching effluents were obtained from: i) Chlorine Bleaching (CB) processes, with partial substitution of chlorine by chlorine dioxide and ii ...
Gladys Vidal   +3 more
doaj   +1 more source

INFLUENCE OF BLEACHING WITH OZONE AND PEROXIDO OF HYDROGEN IN THE YIELD AND QUALITY OF SECONDARY FIBERS

open access: yesCiência Florestal, 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.
Gustavo Ventorim, Jorge L. Colodette
doaj   +1 more source

Electrostatic Co-Assembly of Cyanine Pair for Augmented Photoacoustic Imaging and Photothermal Therapy. [PDF]

open access: yesAdv Sci (Weinh)
A molecular pair phototheranostic agent is developed through the supramolecular assembly of two cyanine dyes, C5TNa (anionic) and Cy‐Et (cationic). The complementary cyanine pair, C5T‐ET, self‐assembles into J‐type aggregates in aqueous environments.
Huang H   +12 more
europepmc   +2 more sources

Investigation on newsprint paper production from wheat straw and its specification [PDF]

open access: yesتحقیقات علوم چوب و کاغذ ایران, 2015
In this study, production of bleached chemical- mechanical pulp from wheat straw for newsprint papermaking was investigated. Wheat straw for pulping was obtained from Lorestan province.
Afshin Veisi   +2 more
doaj   +1 more source

Investigation on TCF Bleaching of Tobacco stalk ( Nicotiana tabacum L.'Coker 347') Soda Pulp [PDF]

open access: yesتحقیقات علوم چوب و کاغذ ایران, 2014
In this study the effect of different values of peroxide in three levels 3%, 4%, 5% and sodium hydroxide in two levels 2%, 3%, on bleaching of tobacco stalks ( Nicotiana tabacum L. 'PVH 19') soda pulp was investigated.
Seyed_Pedram Hashemi   +2 more
doaj   +1 more source

Coral bleaching responses in Sodwana Bay, South Africa [PDF]

open access: yes, 2013
This study assessed the bleaching response (BR) of coral colonies within the central reef complex in Sodwana Bay, South Africa. Bleach surveys were conducted at 16 sites on 8 reefs over the period of 2007 to 2013. A total of 12 858 coral colonies from 30
Harikishun, Ameil
core   +1 more source

Symmetry‐Breaking Strategy Yields Dopant‐Free Small Molecule Hole Transport Materials for Inorganic Perovskite Solar Cells with 20.58% Efficiency and Outstanding Stability

open access: yesAngewandte Chemie, Volume 137, Issue 23, June 2, 2025.
A symmetry‐breaking strategy was used to design two isomeric D–A–D small molecules with 2,1,3‐benzothiadiazole or benzo[d][1,2,3]thiadiazole as acceptor motifs for dopant‐free hole transport materials in CsPbI₃ perovskite solar cells. Structural asymmetry can effectively regulates the dipole moment, energy level alignment, coordination‐active sites ...
Huimin Cai   +15 more
wiley   +2 more sources

BLEACHING EUCALYPTUS PULPS WITH SHORT SEQUENCES

open access: yesCiência Florestal, 2011
Eucalyptus spp kraft pulp, due to its high content of hexenuronic acids, is quite easy to bleach. Therefore, investigations have been made attempting to decrease the number of stages in the bleaching process in order to minimize capital costs. This study
Flaviana Reis Milagres   +3 more
doaj   +1 more source

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