Wine industry wastewaters contain a high concentration of organic biodegradable compounds as well as a great amount of suspended solids. These waters are difficult to treat by conventional biological processes because they are seasonal and a great flow variation exists. Photocatalytic advanced oxidation is a promising technology for waters containing high amounts of organic matter. In this study we firstly investigated the application of H2O2 as oxidant combined with light (artificial or natural) in order to reduce the organic matter in samples from wine industry effluents. Secondly, we studied its combination with heterogeneous catalysts: titanium dioxide and clays containing iron minerals. The addition of photocatalysts to the system reduces the required H2O2 concentration. Although the H2O2/TiO2 system produces higher efficiencies, the H2O2/clays system requires a H2O2 dosage between three and six times lower.
Recibido: 28 de septiembre de 2018 / Aceptado: 12 de noviembre de 2018 Resumen. El objetivo de este trabajo consiste en estudiar, fuera de la categoría de anécdota o fenómeno marginal, la presencia y la participación de las mujeres en el desarrollo del medio fotográfico en Aragón desde mediados del siglo XIX. La reconstrucción de sus biografías y la caracterización y contextualización de sus trayectorias profesionales se ha llevado a cabo mediante el análisis y la revisión sistemática de las fuentes de información localizadas hasta la fecha, tanto de carácter hemerográfico, como bibliográfico y documental. Entre otras, se estudian las fotógrafas aragonesas Polonia Sanz, madame Senges, DoloresAbstract. The objective of this work is to study, outside the category of anecdote or marginal phenomenon, the presence and participation of women in the development of the photographic medium in Aragon. The reconstruction of his biographies and the characterization and contextualization of his professional trajectories has been carried out through the analysis and systematic review of the sources of information located to date, both of hemerographic, bibliographic and documentary nature. Among others, aragonese photographers are studied
Bull. SOC. C h i m . B e l g . vo1.92/n0 8/1983 SYNTHESIS OF ALKYLINDOLES I N G A S PHASE ON AN ALUMINIUM ORTHOPHOSPHATE S , ESTEBAN D e p a r t m e n t o f G e n e r a l C h e m i s t r y and Macromolecules,U.N.E.D., C i u d d d U n i v e r s i t a r i a , M a d r i d -3 J . M . MARINAS D e p a r t m e n t o f O r g a n i c C h e m i s t r y , F a c u l t y o f S c i e n c e s , U n i v e r s i t y o f C b r d o b a , Avda. M e d i n a A z a h a r a s/n. C 6 r d o b a D e p a r t m e n t o f O r g a n i c C h e m i s t r y , F a c u l t y o f C h e m i s t r y , C o m p l u t e n s e U n i M.P. MARTINEZ-ALCAZAR, M. MARTINEZ, A . R . AGARRABEITIA v e r s i t y o f M a d r i d . C i u d a d U n i v e r s i t a r i a , M a d r i d -3 ABSTRACT T h e s y n t h e s i s o f a l k y l i n d o l e s i n t h e gas p h a s e o v e r an a l u m i n i u m o r t h op h o s p h a t e K e a r b y t y p e c a t a l y s t h a s b e e n s t u d i e d . As r e a c t a n t s d i f f e r e n t c a r b on y l compounds a n d p h e n y l h y d r a z i n e o r a n i l i n e h a v e b e e n e m p l o y e d . The c o n d i t i o n s o f t e m p e r a t u r e a n d m o l a r r a t i o o f c a r b o n y l c o m p o u n d / n i t r o g e n o u s compound h a v e b e e n c h a n g e d . The b e s t r e s u l t s w e r e r e a c h e d i n t h e r e a c t i o n s b e t w e e n t h e l o w e r a l d e h y d e s a n d a n i l i n e . T h u s , 75% a l k y l i n d o l e s w e r e o b t a i n e d f r o m p r o p a n a l d e h y d e a n d 6 2 % f r o m b u t y r a l d e h y d e . A l s o r e m a r k a b l e i s t h e r e a c t i o n b e t w e e n c y c l o p e n t an o n e a n d p h e n y l h y d r a z i n e b e c a u s e 45% 2 . 3 -t r i m e t h y l e n e i n d o l e w b s obtained,
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