Periodate oxidation of carbohydrates in acid, neutral, and alkaline media has been studied order to develop a simple fast determination method sugars their derivatives, such as levoglucosan, pyrolysis liquids. The oxidized are follows: D-glucose, D-cellobiose, D-cellotriose, D-fructose, D-sucrose, levoglucosan. reaction products have analyzed with two methods: iodometric titration for iodate ions potentiometric formic acid.

The objective of the study was to investigate preliminary technological parameters for obtaining furfural and binder-less panels depending on hydrothermal pre-treatment temperature, steam explosion treatment pressing conditions. If pre- temperatures were 160–180 °C time 90 min, yield 64.8–67.2% from that which theoretically possible. dynamics significantly increases in first 10 minutes, when at 180 is almost twice as high 160 °C. obtained maximal MOE value (3250 N mm-2) good enough surface...

Global sustainability challenges prompt the world to modify its strategies and shift from a fossil-fuel-based economy bio-resources-based one production of renewable biomass chemicals. Depolymerized suberinic acids (SA) were considered as an alternative resource develop bio-polyols that can be further used in polyurethane (PU) material production. Birch (Betula pendula) outer bark was raw obtain SA, extracted with ethanol, depolymerized potassium hydroxide ethanol solution. By acidifying...

Automated preparative scale solid phase extraction (SPE) has been used to separate levoglucosan – a valuable platform chemical from the liquid products of wood pyrolysis. The sorbent for SPE was strongly basic anion exchange resin in OH-form. Separation could be done with water as eluent, regeneration NaCl solution. Up-scaling purification is step forward industrial production this chemical.

This study aims to characterize and valorize hemp residual biomass by a slow pyrolysis process. The volatile by-products of carbonization were characterized several methods (TGA, UV-VIS, TLC, Flash Prep-LC, UHPLC, QTOF-MS) understand the reaction mechanisms identify chemical products produced during obtained carbon yield was 29%, generating gaseous stream composed phenols furans which collected in four temperature ranges (F1 at 20–150 °C, F2 150–250 F3 250–400 °C F4 400–1000 °C). liquid...

A major function of resin is to provide defense against external attacks by releasing the flow on attacked or damaged area. Nonetheless, leakage surface can have a negative aesthetic and economic impact wood material. The aim this study investigate which treatments affect chemo-physical properties in order hinder exudation during service. To achieve thickening resin, it necessary remove volatile turpentine, several studies been carried out direction, providing useful information about...

It is important to analyze pyrolysis liquids evaluate the yield of valuable products as well unfavorable by-products. This work focuses on choosing detectors for reversed-phase ultra high-performance liquid chromatography analysis liquids. The linearity, sensitivity, precision, and recovery photodiode array (PDA) detector, single-quadrupole mass spectrometer (MS), evaporative light scattering (ELS) detector were compared quantitative determination several typical compounds found in PDA MS be...

Biomass, such as wood, is an important renewable raw material for the production of various products. Since one main constituents wood cellulose, a polysaccharide, fast pyrolysis yields liquid products with noteworthy content sugars. The purpose present study was to develop method chromatographic separation valuable compounds, levoglucosan, from complex mixture by using ion exchange resin column.

An attempt to reduce, replace, or even eliminate the synthetic resins from wood-based panels alongside broadening array of raw lignocellulosics is still essential and attractive. Many pretreatments have been studied, among which steam explosion (SE) resulted in superior physical-mechanical properties obtained binder-less boards. However, SE pretreatment leads a relatively strong odor, emitted boards independent lignocellulosic, raising concern about use Emissions volatile organic compounds...

<title>Abstract</title> A major function of resin in trees is to provide defense against external attacks by releasing the flow on attacked or damaged area. Nonetheless, leakage surface can have a negative aesthetic and economic impact wood material. The aim this study was investigate how heat treatment affects chemo-physical properties <italic>Pinus sylvestris</italic> L. order hinder exudation during service. To reduce fluidity resin, it necessary remove volatile fraction several studies...

Replacing fossil resources with biomass for the production of chemicals is another step closer to a sustainable bio-economy. To make based economically feasible, several valuable products need be obtained from single feedstock in bio-refinery. In our work pyrolysis wood are explored focus on separation particular groups added value chemicals. Anion exchange resins can used separate carbohydrates phenolics, by adsorbing latter onto resin, but further desorption needed obtain concentrated...

Since cellulose and hemicelluloses along with lignin are the main components of biomass, fast pyrolysis wood yields a complex mixture products, among which sugars anhydrosugars one most abundant valuable components. Because presence high molecular compounds, this sugar products has proven to be difficult analyze. In study, research been done improve characterization liquids by sample separation on an ion exchange resin. order characterize liquids, iodometric titration method is used...

Abstract Pyrolysis is a recognized technology for lignocellulose conversion into bio‐based fuels, materials, and chemicals. In this work, pyrolysis liquids were obtained by fast of wood after pretreatment with diluted sulfuric acid. The separated solid‐phase extraction an anion exchange resin Lewatit VPOC 1074 as the stationary phase. aromatic constituents adsorbed on resin, while sugar derivative fraction was eluted water. Different desorption solvents tested batch continuous elution phenol...