Search results for " Recovery"
showing 10 items of 561 documents
A continuous plug flow reactor for magnesium recovery from concentrated brine
2015
Magnesium is one of the eight most abundant elements on the world and the third most abun- dant in the sea, buc practically only two countries (Russia and China) control the world market for this compound. Product purity, Mg recovery, crystal morphology and granulometric distribution of precipitated particles were examined through careful laboratory analysis and results from different tests were compared, in order to identify the effect of allcaline species’ nature and concentration on precipitation phenomena.
Surface water RO permeate remineralization through minerals recovery from brines
2022
Assisted-Reverse Electrodialysis (A-RED) technology was applied following reverse osmosis (RO) of a surface water resource in order to recover minerals from its brine and directly remineralize the RO unit's permeate. Four different sets of cation/anion exchange membranes were benchmarked using single- and mixed-salts synthetic solutions as well as real brine and permeate streams produced from three-stage reverse osmosis applied to Seine River water. The process, operating under equal permeate and brine channel flows (2 cm/s velocities) and applied voltage varying from 0 to 10 V, showed viable remineralization results. Optimal recovery at 10 V applied allowed increasing permeate mineral cont…
L’autonomia di spesa delle Regioni fra Stato ed Unione europea dalla l. cost. 3/2001 alle condizionalità europee sulla ripresa e la resilienza
2021
L'articolo ricostruisce la tendenza all’accentramento nel governo delle finanze pubbliche e l’eccessiva distanza fra testo costituzionale e diritto costituzionale vivente per analizzare l'attuazione del Recovery Plan (PNRR) rilevando un ulteriore tendenza all’accentramento del governo della spesa. Si indagano dunque le ragioni della compressione dell’autonomia finanziaria di spesa per effetto del principio di indifferenza e del “doppio intreccio federale”. Si mira a inquadrare il tema alla luce della leale collaborazione e dellala resilienza istituzionale per accorciare la “distanza” fra testo costituzionale ed attuazione costituzionale in tema di autonomia di spesa delle Regioni. Si prospe…
Safety as design requirement in the intervention on architectural and building heritage
2012
Nel progetto e nell’ intervento di recupero e manutenzione è fondamentale tener conto dei requisiti di sicurezza dell’edificio, dei beni in esso contenuti e dei fruitori al fine di operare, in ambito tecnologico, scelte idonee al controllo prestazionale del sistema edilizio. Questo ambito tematico è stato proposto negli ultimi anni quale linea di ricerca in un contesto attento all’evoluzione metodologica dell’intervento sull’esistente costruito. La sicurezza già identificata nelle classe esigenziale/classe di requisiti per il progetto del nuovo necessita, però, nell’intervento sull’esistente del confronto con le caratteristiche di vulnerabilità del patrimonio costruito. Essa presuppone, com…
UNSUSTAINABLE LIVING. Recovery and reintegration of degraded environments
2012
Building abusiveness contributed to the progressive worsening of urban conditions and environmental crisis, generating a soil uncontrolled consumption, territory’s exploiting, bigger pollution indexes, besides the absence of building quality, levelling of languages and life models, alteration of recognising and territory belonging values, urban and extra urban landscape levelling. Building abusiveness is clearly a territorial emergency which needs technical owning to formulate sudden and effective intervention strategies. The fight against building abusiveness is still today a challenge for both environment and territory. The present volume investigates the issue of environmental decay dete…
REHABILITATION, ENHANCEMENT AND PROMOTION OF ART NOUVEAU BUILDINGS
2016
Since ancient times every era has produced a particular architectural heritage with different materials and with the use of different construction. This study aims to make a contribution in terms of knowledge and the architectural heritage of the 20th century, recovery, and in particular those representing the Sicilian architecture known as Liberty architecture. The study explores the relationship between architecture, materials, construction techniques and the building restoration and enhancement problems. The main purpose of this research is on the one hand the analysis and technological knowledge of the architectural heritage and the other to study the types of …
Designing a sustainable regeneration in the outskirt of Agrigento
2016
This paper describes a case of building recovery and sustainable re-use in Sicily, that is the recovery of Villaseta. It is a very degraded neighborhood in the outskirts of Agrigento. The main goal of the redevelopment project is therefore the rebuilding and the environmental regeneration of the neighborhood, using sustainable technologies and tools, with the construction of vegetable gardens and urban gardens, the production of renewable energy and the sustainable recovery of existing buildings. The eco-friendliness of the restoration project is therefore given by the use of garden roofs and vertical gardens. Villaseta will be a real "green lung" able to give greater environmental awarenes…
Investigating energy saving potential in a big shopping center through ventilation control
2019
Abstract This paper investigates energy saving measures for the ventilation system of large shopping centers. This kind of buildings is characterized by high yearly energy consumptions, because of the high level of operating hours and the frequent use of obsolete technologies. In the analyzed case studies, three big Do It Yourself (DIY) shops, located in Italy, are considered. Two different approaches are considered, they are aimed at reducing the annual energy consumption for the indoor air exchange of the sales area. The first considered retrofit solution consists in the installation of heat recovery exchangers, reducing the energy demand for the air thermal treatment without changing the…
0229: Alterations of cardiac function induced by postnatal overfeeding can be reversed by moderate diet restriction
2014
Postnatal overfeeding (OF) in rodents induces a permanent moderate increase in body weight, metabolic disorders and progressive alterations of cardiac function. Our aim was to determine whether moderate diet restriction could restore cardiac function in mature overfed mice. Immediately after birth, litters of C57BL/6 mice were either maintained at nine (normal-fed group, NF), or reduced to three in order to induce OF. At weaning, mice of both groups received a standard diet ad libitum (AL). At 6 months of age, half of the OF mice were assigned to a moderate 20% calorie restriction (CR, OF-CR) for one month, while NF and the other half of the OF mice continued to eat ad libitum (NF-AL, OF-AL…
Reverse electrodialysis heat-engine: Case studies of improving energy efficiency through recovery of low temperature excess heat
2018
Reverse Electrodialysis (RED) is a technology for generating electricity from the difference in salinity between two solutions. RED is usually applied to natural water streams with different salinities, like seawater vs. freshwater. In the RED Heat-to-Power project we explore the option of using artificial water solutions operating in a closed loop where the difference in salinity is regenerated in a separation step powered by heat at temperature ranges between 60 and 100°C. We call this system Reverse Electrodialysis Heat Engine (RED HE). In this paper, first we summarise the possible system configurations and the overall amount of excess heat available in Europe for powering the RED HE pr…