نتایج جستجو برای: dissolving pulp

تعداد نتایج: 23414  

Journal: :Bioresources 2022

Pulping using organic solvents is an alternative to kraft pulping and can reduce environmental pollutants. Ethanol a potential cooking liquor, as it improves the penetration of chemical due its low surface tension, be recovered via distillation. The structure alpha-cellulose content need controlled during bleaching processes prepare dissolving pulp. Therefore, effect ethanol on efficiency caust...

2010
Min-seuk Kim Eun-young Kim Jinki Jeong Jae-chun Lee Wonbaek Kim

In this study, the recovery of platinum and palladium from petroleum catalysts has been elaborated using a method consisting mainly of dissolving alumina substrate in sulfuric acid thereby concentrating the precious metals in the residue. The effect of dissolution temperature and time, concentration of sulfuric acid, and pulp density on the dissolution of alumina substrate was investigated syst...

Journal: :Acta odontologica latinoamericana : AOL 2011
María Luisa de la Casa María del Milagro Sáez Gabriela López María Elena López

Calcium hydroxide (Calpha(OH)2) paste has been used as a root canal dressing for long time and promotes healing of vital pulp and periapical tissues. The aim of this study was to evaluate the dissolving effect of calcium hydroxide paste mixed with different vehicles on uninstrumented canal walls using scanning electron microscopy (SEM). Twenty one recently extracted single-root teeth were used....

Journal: :Holzforschung 2023

Abstract Tree bark is normally a side-stream product but by an integrated biorefinery approach, valuable compounds may be recovered and used to replace fossil-based products. Norway spruce was extracted obtain cellulose, which chemically treated produce cellulose oxalate (COX) homogenized yield nanocellulose. The nanocellulose Pickering emulsions with almond oil hexadecane as organic phases. CO...

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