Search results for " valorisation"

Catalytic valorisation of Chlorella sp. algae to obtain 5-Hydroxymethylfurfural in the presence of Nb2O5 or NbOPO4

2023

Microalgae are interesting biomass able to growth in not-arable lands, in wastewaters or seawaters. There are plenty of species of microalgae and several of them find application in various industrial sectors because they are source of several products in an integrated biorefinery view. In this work two acidic heterogeneous catalysts, namely Nb2O5 and NbOPO4 have been used. Both are commercial products provided by CBMM and they have been physico-chemically characterised. The isomerisation/dehydration reactions proceed through a tandem pathway involving the Lewis and Brønsted acid sites provided by the surface of the acidic solids giving rise to the isomerization of glucose to fructose, foll…

L'appropriation par l'entreprise partenaire des résultats d'une thèse CIFRE : exemple d'une recherche portant sur la formation initiale des sapeurs-p…

2023

Long-term properties and end-of-life of polymers from renewable resources

2017

[EN] The long-term properties and end-of-life of polymers are not antagonist issues. They actually are inherently linked by the duality between durability and degradation. The control of the service-todisposal pathway at useful performance, along with low-impact disposal represents an added-value. Therefore, the routes of design, production, and discarding of bio-based polymers must be carefully strategized. In this sense, the combination of proper valorisation techniques, i.e. material, energetic and/ or biological at the most appropriate stage should be targeted. Thus, the consideration of the end-of-life of a material for a specific application, instead of the end-of-life of a material s…

Suitability of blends from virgin and reprocessed polylactide: performance and energy valorization kinetics

2018

[EN] A blending strategy of virgin and reprocessed polylactide may be postulated as an alternative to reduce the material cost at industrial level, and as a valorisation route to plastic waste management of production scraps. The performance of blends prepared from virgin polylactide and polylactide mechanically reprocessed up to two cycles (PLA-V/R) was assessed in terms of thermo-oxidative stability, morphology, viscoelasticity and thermal kinetics for energetic valorisation. PLA-V/R blends showed appropriate thermo-oxidative stability. The amorphous nature of polylactide was preserved after blending. The viscoelastic properties showed an increment of the mechanical blend effectiveness, w…

Inoculum of Indigenous Microalgae/Activated Sludge for Optimal Treatment of Municipal Wastewaters and Biochemical Composition of Residual Biomass for…

2022

In this work, municipal wastewater was treated with microalgal/activated sludge consortia. We aimed at obtaining a positive interaction between the microalgae and the heterotrophic bacteria and identifying the best combination for bioremediation purposes. A strain of Chlorella sp CW2 employed in this work was isolated from AS and molecularly characterised in this work for the first time. This strain and another previously isolated strain (Chlorella sp Pozzillo) were inoculated alone and in combination with AS in different ratios in wastewaters. Microalgae/activated sludge growth curves were obtained by using a UV–vis spectrophotometer and a fluorimeter to distinguish the contribution of the…

Thermal kinetics for the energy valorisation of polylactide/sisal biocomposites

2018

[EN] The thermal stability and decomposition kinetics of PLA/sisal biocomposites was discussed to evaluate the suitability of their use in energy recovery processes such as pyrolysis and combustion. The influence of the addition of sisal up to 30%wt, the presence of coupling agent, and the atmosphere of operation, i.e. inert or oxidative was discussed by means of multi-rate linear non-isothermal thermogravimetric experiments. All biocomposites showed a mean high heating value of 15 MJ/kg indicating their suitability for energy recovery processes. The thermal requirements of PLA/sisal decomposition were assessed in terms of onset decomposition temperature and apparent activation energy. A mi…

Material valorisation of amorphous polylactide. Influence of thermo-mechanical degradation on the morphology, segmental dynamics, thermal and mechani…

2012

[EN] This paper reports the effects of multiple mechanical recycling on the structure and properties of amorphous polylactide (PLA). The influence of the thermo-mechanical degradation induced by means of five successive injection cycles was initially addressed in terms of macroscopic mechanical properties and surface modification. A deeper inspection on the structure and morphology of PLA was associated to the thermal properties and viscoelastic behaviour. Although FT-IR analysis did not show significant changes in functional groups, a remarkable reduction in molar mass was found by viscometry. PLA remained amorphous throughout the reprocessing cycles, but the occurrence of a cold-crystalli…

Study of Biodiversity for Fruit Valorization: the example of Ancient Apple Cultivars (Malus x domestica Borkh.) from Tuscany (Italy)

2010

Le limitazioni al regime di circolazione e valorizzazione delle azioni e quote, profili civilistici

2022

Il presente contributo propone l'analisi di alcuni strumenti giuridici offerti dall’autonomia privata in ambito societario, in modo da permettere all’imprenditore – in tutte le ipotesi in cui quest’ultimo intenda determinare, prima della sua morte, la successione dell’azienda di famiglia – di pianificare in modo efficace il passaggio generazionale, avvantaggiando o sfavorendo, a seconda dei casi, il trasferimento delle partecipazioni societarie, con il proposito di disinnescare i rischi di disgregazione dell’unità dell’impresa e di conflitti tra i membri della famiglia. This contribution proposes the analysis of some legal instruments offered by private autonomy in the corporate sphere, in …

Architecture domestique punique, hellénistique et romaine. Sauvegarde et mise en valeur / Architettura domestica punica, ellenistica e romana. Salvag…

2014

Finanziato dall’Unione Europea nell’ambito della cooperazione transfrontaliera Italie Tunisie 2007-2013, il Progetto APER (Architettura domestica punica, ellenistica e romana: salvaguardia e valorizzazione) ha unito istituzioni italiane e tunisine (il capofila Polo Didattico di Agrigento dell’Università di Palermo, con i partner Consorzio Universitario Provincia di Agrigento, Institut National du Patrimoine e Agence de Mise en Valeur du Patrimoine et de Promotion Culturelle e gli enti associati Parco della Valle dei Templi di Agrigento, Provincia Regionale di Agrigento, Centro Regionale per la Progettazione e il Restauro della Regione Siciliana, École Nationale d’Architecture et Urbanisme d…