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Production of low-cost adsorbents with tunable surface chemistry by conjunction...

We report a new methodology to produce activated carbons from biomass-derived hydrothermal carbons using air and carbon dioxide. The activation step is crucial to develop porosity in the hydrothermal carbons. Additionally different surface functionalities are also introduced on the surface of the final materials. Our method based on initial hydrothermal carbonization of lignocellulosic biomass (walnut shell, su...

HYDROTHERMAL CARBONIZATION AS AN EFFECTIVE WAY OF DENSIFYING THE ENERGY CONTENT...

Hydrothermal carbonization processes were studied under different conditions using two different biomass materials: walnut shell and sunflower stem. Coalification under mild conditions was promoted with the aim of increasing the calorific value of the solid hydrochar. Hydrocarbonization processes brought up an increase on the heating value of the materials up to 28.9 and 29.3 MJ kg−1, for sunflower stem and wal...

Study of the contributions of non-specific and specific interactions during flu...

The adsorption of fluoxetine onto activated carbons (ACs) prepared from almond tree pruning by steam and CO2 activation under different temperature conditions (650– 9508C), was studied. In both series increasing the temperature caused an increase in the BET apparent surface area, yielding ACs with SBET up to 870 and 710m2 g 1 after steam and CO2 activation, respectively. Also, a slight widening of the porosity ...

Hernias de la pared abdominal: el nacimiento de una sociedad médica

Influence of chitosan addition on quality properties of vacuum-packaged pork sa...

The aim of the study was to evaluate the influence of the chitosan addition on the quality of vacuum packaged pork sausages. A variant of the product was elaborated with 1% (w/w) of chitosan in lactic acid solution at 1% (v/v) and it was compared to a control. Sausages were mechanically stuffed and manually conformed and vacuum packaged. Sausages were stored at 4 °C and microbiological evaluations, pH measureme...

Reproducing stone monument photosynthetic-based colonization under laboratory c...

Science of the total environment 405(2008) 278-285 ; In order to understand the biodeterioration process occurring on stone monuments, we analyzed the microbial communities involved in these processes and studied their ability to colonize stones under controlled laboratory experiments. In this study, a natural green biofilm from a limestone monument was cultivated, inoculated on stone probes of the same lithot...