Results 11 to 20 of about 41,602 (111)

Crystal phase evolution of high temperature annealed Fe3O4‐CaO catalysts for biodiesel production

Biofuels, Bioproducts and Biorefining, Volume 17, Issue 4, Page 843-858, July/August 2023., 2023
Abstract Biodiesel (BD) is an alternative transportation fuel that has been commercialized. Most CaO‐based heterogeneous catalysts that are applied for BD production become strongly deactivated after not more than five cycles of reuse. Predominantly CaO and Ca(OH)2 active phases in eggshell were mixed with Fe3O4 by ball milling for 3 h followed by ...
Jose Luis Aleman‐Ramirez, Odin Reyes‐Vallejo, Patrick U. Okoye, Rocio Sanchez‐Albores, Arturo Maldonado‐Álvarez, Pathiyamattom J. Sebastian   +5 more
wiley   +1 more source

Thermodynamic Study of Adsorption of Phenol, 4‐Chlorophenol, and 4‐Nitrophenol on Activated Carbon Obtained from Eucalyptus Seed

Journal of Chemistry, Volume 2015, Issue 1, 2015., 2015
Activated carbons from shell eucalyptus (Eucalyptus globulus) were prepared by chemical activation through impregnation with solutions of two activators: sulfuric acid and sodium hydroxide, the surface areas for activated carbons with base were 780 and 670 m2 g−1 and the solids activated with acid were 150 and 80 m2 g−1.
Nelson Giovanny Rincón-Silva, Juan Carlos Moreno-Piraján, Liliana Giraldo Giraldo, Cengiz Soykan   +3 more
wiley   +1 more source

Calorimetric Study of Mesoporous SBA‐15 Modified for Controlled Valproic Acid Delivery

Journal of Chemistry, Volume 2013, Issue 1, 2013., 2013
SBA‐15 ordered mesoporous silica functionalized with (3‐aminopropyl)triethoxysilane (APTES) was used as the carrier for anticonvulsant drug 2‐propylpentanoic acid (valproic acid). The surface of SBA‐15 containing free silanol groups was modified with 3‐aminopropyltriethoxysilane via postsynthetic reaction.
Liliana Giraldo, Juan Carlos Moreno-Piraján, Jose Alberto Pereira   +2 more
wiley   +1 more source

Acute and Chronic Toxicity of Soluble Fractions of Industrial Solid Wastes on Daphnia magna and Vibrio fischeri

The Scientific World Journal, Volume 2012, Issue 1, 2012., 2012
Industrial wastes may produce leachates that can contaminate the aquatic ecosystem. Toxicity testing in acute and chronic levels is essential to assess environmental risks from the soluble fractions of these wastes, since only chemical analysis may not be adequate to classify the hazard of an industrial waste. In this study, ten samples of solid wastes
Letícia Flohr, Armando Borges de Castilhos Júnior, William Gerson Matias, Jacek Topczewski   +3 more
wiley   +1 more source

Heavy Metal Ions Adsorption from Wastewater Using Activated Carbon from Orange Peel

Journal of Chemistry, Volume 9, Issue 2, Page 926-937, 2012., 2012
Activated carbon obtained from orange peel (ACOP) was synthesized and used for the removal of heavy metal ions (Cr, Cd, and Co) from aqueous solutions. Two different adsorption models were used for analyzing data. Adsorption capacities were determined: copper ions exhibit the greatest adsorption on activated carbon orange peel because of its size and ...
Juan Carlos Moreno-Piraján, Liliana Giraldo   +1 more
wiley   +1 more source

Abstracts

, 2023
Molecular Oncology, Volume 17, Issue S1, Page 1-597, June 2023.
wiley   +1 more source

Thermodynamic and Calorimetric Study of Acetylsalicylic Acid (Aspirin) and Ibuprofen

Journal of Chemistry, Volume 8, Issue 3, Page 1298-1308, 2011., 2011
Enthalpies of solution and dilution of aqueous solutions of sodium acetylsalicylic acid salt and ibuprofen salt were measured with an isoperibolic calorimeter at 293.15 K, 298.15 K, 303.15 K, 308.15 K and 318.15 K. The concentration of the electrolyte was restricted to the solubility of the salt at various temperatures and did not exceed 0.035–0.057 ...
Juan Carlos Moreno-Piraján, Vanessa Silenia García-Cuello, Liliana Giraldo-Gutierréz   +2 more
wiley   +1 more source

On the Inhibition of the Reaction Between Anodic Aluminum Oxide and Water

Active and Passive Electronic Components, Volume 6, Issue 2, Page 63-66, 1980., 1979
The reaction between anodic aluminum oxide and several passivating solutions of citric acid and ammonium dihydrogen phosphate (ADP) is studied by capacitance measurements. In addition, the passivating effect of the above solutions has been evaluated by the reaction of the oxide with pure boiling water and subsequent anodization.
J. M. Sanz, J. M. Albella, J. M. Martínez-Duart   +2 more
wiley   +1 more source

Correlación de las variables fisicoquímicas de láminas de mango (Manguifera indica L.) fortificadas con cloruro de calcio mediante deshidratación osmótica con pulsos de vacío

Revista Tecnológica, 2014
El presente estudio se realizó con el finalidad de conocer el grado de asociación entre las variables fisicoquímicas de láminas de mango (Manguifera indica L.) fortificadas con cloruro de calcio (CaCl2) mediante deshidratación osmótica con pulsos de ...
Richard Alejandro Gómez
doaj   +4 more sources

Variación en la concentración de sólidos solubles en tres especies arbustivas forrajeras del trópico alto de Colombia

Pastos y Forrajes, 2020
Objetivo: Evaluar la concentración de sólidos solubles en tres especies arbustivas forrajeras con diferentes edades, en Pasto, Nariño-Colombia. Materiales y Métodos: Se tomaron mediciones en Tithonia diversifolia (Hemsl.) Gray, Sambucus nigra L.
María Fernanda Urbano-Estrada, Juan Leonardo Cardona-Iglesias, Edwin Castro-Rincón   +2 more
doaj