Search results for "SB"
showing 10 items of 1841 documents
TREATMENT OF LANDFILL LEACHATE IN SBR SYSTEMS: ANALYSIS OF BIOMASS ACTIVITY BY MEANS OF RESPIROMETRIC TECHNIQUES
2013
In the last decades landfilling has been the main method of municipal solid waste (MSW) disposal in many countries. MSW landfills are usually considered as a large biological reactor where the MSWs undergo anaerobic digestion producing gas and liquid emissions. Aged, or mature leachate, which is produced by older landfills, can be very refractory; for this reason mature leachate is difficult to treat alone, but it can be co-treated with sewage or domestic wastewater. The aim of the study was to investigate the feasibility of co-treatment of landfill leachate and synthetic wastewater in different percentages, in terms of process performance and biomass activity, by means of respirometric tec…
Integrated production of biopolymers with industrial wastewater treatment: Effects of OLR on process yields, biopolymers characteristics and mixed mi…
2022
The production of polyhydroxyalkanoates (PHA) using industrial wastewaters as feedstocks is a current and challenging topic. This study investigated the production of biopolymers by a mixed microbial culture under different OLRs equal to 1 kgCOD m-3d-1 (Period 1), 2 kgCOD m-3d-1 (Period 2) and 3 kgCOD m-3d-1 (Period 3). The maximum PHA content was achieved in Period 2 (0.38 gPHA gTSS-1), whereas lower values were obtained in Period 1 (0.13 gPHA gTSS-1) and Period 3 (0.26 gPHA gTSS-1). Overall, the maximum PHA productivity resulted equal to 0.08 gPHA L-1h-1 (P2), 0.05 gPHA L-1h-1 (P1) and 0.04 gPHA L-1h-1 (P3), respectively. The molecular weight of the PHA increased from Period 1 (250 kDa) t…
Morfologia ed analisi delle immagini applicate allo studio dei bitumi modificati con polimeri
2009
Vengono presentati i risultati di uno studio di laboratorio condotto su campioni di bitume modificato con diversi tipi di polimeri e precisamente Stirene-butadienestirene (SBS), Etilen-vinilacetato (EVA) ed etilen-butilacrilato (EBA), le cui proprietà fisico-chimiche vengono riportate nell’articolo.
How to use the SBEM in the practical engineering?
2012
IL METODO DEGLI SCHEMI ELASTICI PARZIALI NELLA COSTRUZIONE A SBALZO DEI PONTI AD ARCO
2011
In questo lavoro viene presentato uno studio sulle sequenze di tesatura degli stralli nei ponti ad arco costruiti per sbalzi successivi con l’ausilio di tiranti provvisori. In particolare viene presentato il metodo degli schemi elastici parziali, proposto per la determinazione degli sforzi iniziali nei cavi. Tale metodologia è stata dapprima applicata sui ponti strallati e viene estesa in questo studio al caso dei ponti ad arco costruiti per sbalzi successivi. La trattazione teorica è seguita da un’applicazione numerica su un caso studio di un ponte ad arco in calcestruzzo.
Innovative Photovoltaic Translucent Components for the Building Envelope
2014
International directives that regulates buildings energy efficiency and environmental sustainability establish strict parameters for the construction of a new generation of “Zero Energy Buildings” indicating transmittance limits for building envelope components and encouraging the use of renewable sources. In this sense, the PV sector aims at the definition of novel efficient solutions for the integration in the building envelope, standing out for their multifunctional features. After an overview on the main PV technologies and building integrated applications, focusing on semi-transparent envelope solutions, the paper shows the results of a research that is being carried out at the Departm…
Integrazione di celle solari di terza generazione nel vetromattone per la realizzazione di involucri edilizi traslucidi fotovoltaici
2013
L’integrazione di celle solari di terza generazione - Dye-sensitised Solar Cells (DSSC) - nel vetromattone consente di ottenere un prodotto edilizio in grado di generare energia pulita, personalizzabile in termini di colore, livelli di trasparenza e fi niture, adatto alla realizzazione di componenti edilizi fotovoltaici, traslucidi e multifunzionali, facilmente integrabili nelle chiusure degli edifi ci per la costruzione di involucri edilizi energeticamente effi cienti ed attivi anche in contesti climatici avversi, quali possono essere quelli del Mediterraneo e delle aree subtropicali. L’articolo illustra 4 differenti ipotesi di integrazione delle DSSC nel vetromattone fornendo, per ciascun…
ENERGY RETROFIT AND URBAN RENOVATION. APPLICATION OF SBTOOL METHOD. A CASE STUDY IN TRAPANI, ITALY
2013
Climate changes caused by carbon emissions are nowadays considered as one of the greatest threats faced by humanity, because they cause problems of human health and poor prospects for global economy. It means that, also in the field of architecture and urban planning, there is an urgency to find appropriate solutions to face this issue, as demonstrated by the increasing amount of normative measures and policy at global level. The paper aims to show a critical analysis of the urban context conducted through the application of sustainability assessment tool - SBTool - into the social housing complex of Cappuccinelli district, chosen as case study. The choice for applying this methodology, whi…
Integration of Dye-Sensitized Solar Cells with Glassblock
2012
The paper will show the first results of a research (included in a larger work about the Improvement of glassblocks performance in order to use them for the construction of sustainable translucent building envelops even in Mediterranean and Tropical Areas) aimed to the integration of glassblock with the DSC technology. Glassblock is a high-performance type of glass in the field of sustainable architectural claddings: the process of deposition of the cells on the single glassblock, their best position and the performance of this new kind of glassblock, DSC integrated, will be discussed in the paper in terms of transmittance, light transmission and aesthetical effects, together with the probl…
“Hypotheses of Integration of DSC into the Glassblock for teh Construction of Translucent Building Envelope”
2012
New configurations of the glassblock have been designed at the Department of Architecture of the University of Palermo in order to reduce its U value responding to the latest national and international regulation limits for the thermal insulation of the buildings with glass façades. One of these new configurations consists in the insertion of a special plastic "belt" between the two glass shells composing the glassblock, which have to be glued to it (cold assembly); the plastic belt effectively interrupts the thermal bridge between the two glass shells. Thanks to the particular design of its shape, the "thermal belt" can be also used for the insertion of one or more additional sheets of dif…