Lignocellulose is the most abundant source of saccharides and it therefore a promising feedstock for glycols, such as ethylene-glycol, via catalytic hydrogenolysis polysaccharides that contains. However, this step hampered by presence lignin other biomass contaminants, ash, which need to be removed in pretreatment step. We propose an organosolv-like pre-treatment can delignify de-ash lignocellu...

Dividing wall column (DWC) is an advanced technology which could decrease energy consumption. As the vertical inserted in DWC increases degree of freedom systems, control becomes more difficult than conventional columns. In this study, mixture glycols (1, 2-propanediol+ 1, 3-butanediol+ 4-butanediol) were taken as feed, optimized structure was proposed, and three structures for tested by ± 10% ...

1,2-Ethanediol, 1,2-propanediol and their aqueous solutions are widely used as heat transfer fluids. Their thermal conductivity is a vital physical property, yet there only few reports in literature. In this paper, of binary the two glycols was measured using transient hot wire method at temperature from 253.15 K to 373.15 atmospheric pressure. Measurement made for six compositions over entire ...

Glycerol hydrogenolysis represents one of the most promising technologies for future bio-refineries. In this context, kinetic modeling provides key quantitative assessment significance various reactions process development. However, as present, there are only limited studies on detailed glycerol conversion to 1,2-propanediol, ethylene glycol and other alcoholic products. work, a comprehensive s...

An experimental and theoretical study was undertaken for three ether glycols (mixtures of isomers). The present paper, being the first part a complex study, reports using static apparatus, namely, vapor–liquid equilibria dipropylene glycol methyl (DPM), n-butyl (DPnB), propylene (PnB), their pseudo-binary mixtures composed (PnB + DPM), (DPM DPnB), aqueous solutions each ether. explored temperat...

In a series of publications which have appeared during the last five years (1-8), the activity of certain organic compounds, particularly propylene and triethylene glycols, in killing air-borne bacteria and viruses has been described. The types of microorganisms found to be susceptible and some effects on this killing action of changes in the temperature, relative humidity, and concentration of...

The effects of the water-miscible straight chain and branched alcohols and glycols on the native conformation of sperm whale myoglobin, cytochrome c, and oc-chymotrypsinogen have been investigated by spectral, difference spectral, and optical rotatory dispersion methods. Based on the midpoints of the denaturation transitions, that is, the amount of alcohol or glycol required to produce 50% dena...

A method of sequential extraction of /3-glucuronidase-hydrolyzed urine, which permits the assessment of alternative pathways of corticosteroid excretion, was employedto study urine samplesfrom normal subjects and from patients with hepatic cirrhosis. In patients with hepatic cirrhosis there is a decrease in the excretion ef methylene dichloride-soluble 17-hydroxycorticosteroids; this decrease i...