UPCommons - E-prints UPC Universitat Politècnica de Catalunya
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E-prints UPC cobreix dues finalitats: per una banda, és el dipòsit institucional de la UPC que recull els articles de revista, les comunicacions de congrés i els reports de recerca generats en les activitats de recerca del personal docent i investigador de la universitat; per l'altra, és una eina que permet accelerar la producció científica, allotjant versions de documents prèvies a la publicació en una revista o a les actes d’un congrés.
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A new method to obtain information about the pore size distribution in microporous polymeric membranes - Llorens, Joan; Marco, P.; Sabaté Reboll, José; Pujolà Cunill, Montserrat; Felip, I; Plumed, E
Transport measurements of selected fluids through porous membranes provide information on precise statistical
moments of the membrane pore-size distribution (PSD). It is assumed that membrane porosity, ~T,is
distributed on different pores sizes which are statistically distributed. Mean pore sizes are determined on the
basis of statistical moment analysis. This paper focuses in the special case of determining PSD in microfiltration
(MF) membranes from a collectíon of experíments that include porosity and bubble point determinations
and liquid and gas permeations.
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Rabbit manure composting - Llosera Vall, X.; Voltas Aguilar, Jorge; Pujolà Cunill, Montserrat; Soliva Torrentó, Montserrat
Ten samples of rabbit manure representative of the different
techniques of treatment and handling used by livestock
farms in Catalonia have been characterized. Two of the materials
with a different composition have been composted. The
origin of materials influence the composting processes
and the compost final characteristics. It seems to be relationated
with the balance between humification and decomposition
processes.
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Continuous metal recovery process using polymer enhanced ultrafiltration - Sabaté Reboll, José; Pujolà Cunill, Montserrat; Llorens, Joan; Marco, Pilar
The separation of metals from aqueous streams by continuous polyrner enhanced ultrafiltration (PEUF) was modelled
in order to understand, evaluate and optimise the feasibility of the process. The mathematical model developed
has three sections: mass balances, equilibriurn of rnetal-polymer complexation and rules for UF membrane
separation. On the one hand, the modeJ allows an examination of the influence of physico-chernical variables
(affinity between the metal ion and the complexing polyrner groups) and engineering parameters (rnainly expended
acid and base reagents, amount of polymer used and recyc1ing strearn flow) on the quality and productivity
of the treated water stream. On the other band, a' suitable representation of...
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