Lignin is a natural biopolymer present in lignocellulosic biomass. During paper pulp production with the Kraft process, it solubilized and degraded lignin then burned to recover energy. In this paper, solvolysis of was studied water water/alcohol mixtures produce oligomers monomers interest, at mild temperatures (200–275 °C) under inert atmosphere. It found that presence alcohol type (methanol,...

We describe a glucuronidase bioassay for detecting residual bactericidal activity from the use of disinfectants on hard surfaces; in this assay we used formaldehyde, ethanol, isopropanol, chlorine, and a commercial preparation containing 2-bromo-2-nitro-1, 3-propanediol. Chlorine and the commercial preparation showed bactericidal activity (53.5% and 98.2%, respectively) for a week after disinfe...

An experimental setup was designed and optimized to collect particulate matter suspended in cigarettes smoke or the aerosol generated during use of heated tobacco products (HTPs). The is mainly based on a gas washing flask containing water where soluble compounds can be trapped, resembling interaction body. This system allows perform puffing experiments conditions similar those Health Canada In...

Isopropanol-butanol fermentation carried out by C. beijerinckii can be improved immobilizing cells in a fixed bed bioreactor. In this study, bioreactor was developed using polyurethane foams as solid support for biofilm growth. The dilution rate increased over time to follow development while avoiding solvent accumulation within the A phenomenological model designed and successfully described b...