Zobrazeno 1 - 10
of 189
pro vyhledávání: '"C. Valenzuela Calahorro"'
Publikováno v:
Adsorption Science & Technology, Vol 15 (1997)
The effect of the oxidation of activated carbon (AC) with aqueous solutions of H 2 O 2 on the porous texture of the material has been investigated. In such treatments of AC, H 2 O 2 solutions of varying concentration and pH (i.e., unchanged pH and pH
Externí odkaz:
https://doaj.org/article/5b562865f96c486f84c1415f4aad3698
Autor:
J.M. Juarez, Miguel Molina-Sabio, K. Vasanth Kumar, Joaquín Silvestre-Albero, Francisco Rodríguez-Reinoso, C. Valenzuela-Calahorro
Publikováno v:
Chemical Engineering Journal. 162:424-429
A simple hybrid isotherm, which is an addition of Frenkel–Halsey–Hill isotherm to the Redlich–Peterson (RPFHH) isotherm, is proposed, taking into account the theoretical limitations of these models. The hybrid isotherm was fitted to N2 adsorpti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e16563777ae5b766f512d30ebcee52a9
https://doi.org/10.1016/j.cej.2010.04.058
https://doi.org/10.1016/j.cej.2010.04.058
Autor:
Duane Choquesillo-Lazarte, C. Valenzuela-Calahorro, Juan Niclós-Gutiérrez, Alfonso Castiñeiras, Alicia Domínguez-Martín, Josefa María González-Pérez, C. Sánchez de Medina-Revilla, Isabel García-Santos
Publikováno v:
Journal of Coordination Chemistry. 62:120-129
In an attempt to obtain ternary copper(II) [Cu(II)] complexes where bis(2-pyridyl) ketone (bpk) could induce the fac-O2 + N(apical) conformation in the HL2− form of two different nitrilotriacetates (HNTA2− and HDNTA2−), we obtained [Cu(bpmd)2][
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::79583d09369b3543d538531c4df0c287
https://doi.org/10.1080/00958970802474847
https://doi.org/10.1080/00958970802474847
Publikováno v:
Applied Surface Science. 253:5274-5280
In this paper the adsorption process of a natural steroid hormone (progesterone) by a carbon black and a commercial activated carbon has been studied. The corresponding equilibrium isotherms have been analyzed according to a previously proposed model
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::96b075042be1ee9a7cc2a49d88b0c7e0
https://doi.org/10.1016/j.apsusc.2006.11.047
https://doi.org/10.1016/j.apsusc.2006.11.047
Autor:
R. Navarrete-Casas, Antonio Navarrete-Guijosa, C. Valenzuela-Calahorro, A. Garcia-Rodriguez, J.D. López-González
Publikováno v:
Journal of Colloid and Interface Science. 306:345-353
We examined the exchange of univalent cations (Na+ and H+) retained on two commercially available synthetic zeolites with Li+ ions present in aqueous solutions in contact with the solids with a view to preparing effective controlled-release pharmaceu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0d052cde3769a0e80d2b7a6d981c1ec2
https://doi.org/10.1016/j.jcis.2006.10.002
https://doi.org/10.1016/j.jcis.2006.10.002
Publikováno v:
Journal of Hazardous Materials. 135:122-128
In this work, the retention of cobalt on a humin (HU) derived from a brown coal is studied. Through a systematic and coordinated investigation of the behavior of the metal ions in solution (speciation diagrams as a function of pH) and their adsorptio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7a97a9549458968805ff6cb350ad76d5
https://doi.org/10.1016/j.jhazmat.2005.11.041
https://doi.org/10.1016/j.jhazmat.2005.11.041
Autor:
A. García Rodríguez, A. Navarrete Guijosa, A. Espínola Lara, C. Valenzuela Calahorro, F. Rey Bueno, R. Navarrete Casas
Publikováno v:
Applied Surface Science. 252:6022-6025
In the present work, we have studied the adsorption of xanthine derivatives by activated carbon sorbents in aqueous solutions. The study comprised both kinetic, equilibrium and thermodynamic aspects. The kinetic results were reported in a previous pa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0ec3c0f844eb4a847c5b592a777b452a
https://doi.org/10.1016/j.apsusc.2005.11.020
https://doi.org/10.1016/j.apsusc.2005.11.020
Publikováno v:
Science of The Total Environment. 358:243-254
The ubiquitous presence of humic substances (HS), combined with their ability to provide multiple sites for chemical reaction, makes them relevant to numerous biogeochemical processes such as mineral weathering, nutrient bioavailability, and contamin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::04e7ee9e5b7e07afca073e1f7f6f5922
https://doi.org/10.1016/j.scitotenv.2004.11.026
https://doi.org/10.1016/j.scitotenv.2004.11.026
Publikováno v:
Surface Science. 575:136-146
The solubility of humic substances (HS) increases with pH. However, when in the presence of appropriate concentrations of transition metals in solution, soluble HS flocculate as a consequence of the aggregation processes promoted by the metallic ions
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4592ff9a6834d69ae57cb0d4b7c127bb
https://doi.org/10.1016/j.susc.2004.11.027
https://doi.org/10.1016/j.susc.2004.11.027
Publikováno v:
Journal of Colloid and Interface Science. 277:55-61
Humins (HU) are the most insoluble fraction of humic substances. Chemically, they can be considered as humic macromolecules bonded to the mineral matter of soil. The HU have a marked colloidal character and they are extremely important in retention o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b4aea0a22c23cf7b12d17eccbb2daf57
https://doi.org/10.1016/j.jcis.2004.04.031
https://doi.org/10.1016/j.jcis.2004.04.031