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Toplam kayıt 166, listelenen: 71-80
Antioxidant activity and phenolic composition of sumac (Rhus coriaria L.) extracts
(Elsevier Sci LTD, 2007)
Antioxidant activity and phenolic compounds of sumac extracts were investigated. Sumac was extracted in methanol and subjected to solvent-solvent partitioning to yield two fractions as ethyl acetate and aqueous. Methanol ...
Characterization of bio-oil obtained from fruit pulp pyrolysis
(Elsevier Ltd, 2008)
Apricot pulps was pyrolyzed in a fixed-bed reactor under different pyrolysis conditions to determine the role of final temperature, sweeping gas flow rate and steam velocity on the product yields and liquid product composition ...
Catalytic Esterification and Transesterification Reaction of High Acidic Value Waste Oil by Microwave Heating
(Wiley, 2015)
In this study, biodiesel production from waste cooking oil was investigated. Esterification and transesterification reactions were carried out under microwave irradiation using heterogeneous (Amberlyst-15) and homogeneous ...
Liquid products from pyrolysis of synthetic blends of Turkish oil shales and lignites
(Taylor & Francis Inc, 2000)
Fixed-bed pyrolysis experiments have been conducted on samples from synthetic blends of Seyitomer oil shale and lignites to determine the possibility of being a potential source of fuels and chemical feedstocks. The effects ...
Kinetics of hydrolysis of benzaldehyde dimethyl acetal over Amberlite IR-120
(American Chemical Society, 2007)
The kinetics of the hydrolysis of benzaldehyde dimethyl acetal has been studied using a circulated batch reactor in dioxane. Amberlite IR-120, in its acidic form, was used as a heterogeneous catalyst. Kinetic expression ...
The Seebeck coefficient and the Peltier effect in a polymer electrolyte membrane cell with two hydrogen electrodes
(Pergamon-Elsevier Science LTD, 2013)
We report that the Seebeck coefficient of a Nafion membrane cell with hydrogen electrodes saturated with water vapour, at 1 bar hydrogen pressure and 340 K, is equal to 670 +/- 50 mu V/K, meaning that the entropy change ...
Optimization of Euphorbia rigida fast pyrolysis conditions by using response surface methodology
(Elsevier, 2014)
The objective of this study was to optimize the experimental conditions for obtaining the highest bio-oil yield from Euphorbia rigida (E. rigida) by fast pyrolysis using response surface methodology (RSM) based on central ...
Adsorption of lead(II) ions from aqueous solutions by activated carbon prepared from biomass plant material of Euphorbia rigida
(Elsevier Science Sa, 2007)
Adsorption of lead(II) ions onto activated carbon prepared from renewable plant material, which is Euphorbia rigida, was investigated with the variation in the parameters of pH, contact time, the amounts of adsorbent, ...
Potential contribution of firewood, energy forestation and forest residues in Turkey
(Multi-Science Publ Co LTD, 2010)
In this paper, the firewood, energy forest and forest residue potentials of Turkey are investigated. Turkey has no large oil or gas reserves and more than half of the consumed energy is imported from abroad. Hence, in order ...
Comparison of the generation of oil by the extraction and the hydropyrolysis of biomass
(Elsevier Sci LTD, 2006)
This paper discusses the maximisation of the yields of useful bio-oils generated from seeds and nut-shells both by extraction and by hydropyrolysis. The formation and the composition of the bio-oils are also discussed. ...