Search results for " Irreversibility"

showing 3 items of 3 documents

Exergy analysis of electrodialysis for water desalination: Influence of irreversibility sources

2022

The increasing freshwater demand is pushing the development and adoption of desalination technologies. In this framework, electrodialysis has a consolidated role in brackish water desalination, but to make it competitive with other technologies for the desalination of more concentrated solutions (e.g., seawater), the specific energy consumption should be reduced. Exergy analysis provides a useful tool for determining the contribution of each thermodynamic inefficiencies on the process efficiency and the specific energy consumption. In this regard, this paper presents an exergy analysis of the electrodialysis process. A 1-D model is used for evaluating the performance of industrial-scale sys…

Desalination Electrodialysis Exergy analysis Chemical exergy Irreversibility Specific energy consumptionSettore ING-IND/26 - Teoria Dello Sviluppo Dei Processi ChimiciExergy analysisIrreversibilityFuel TechnologyNuclear Energy and EngineeringRenewable Energy Sustainability and the EnvironmentDesalinationSettore ING-IND/10 - Fisica Tecnica IndustrialeEnergy Engineering and Power TechnologyElectrodialysisSpecific energy consumptionChemical exergy
researchProduct

Modelling Reverse Electrodialysis process via Exergy Analysis

2017

Salinity Gradient Power Heat Engines (SGP-HEs) represent a novel technology to convert low grade waste heat into electricity. Reverse Electrodialysis Heat Engine (REDHE) is one of the possible application of this concept, where a common RED unit is coupled with a thermal regeneration unit supplied with waste heat to restore the salinity gradient of the streams to be fed back to the RED unit. In a RED unit, anion and cation exchange membranes (AEMs and CEMs) are alternatively stacked and interposed between salt solutions at different concentration generating an electric potential difference over each membrane along with a selective transport of cations and anions from the concentrated soluti…

Settore ING-IND/26 - Teoria Dello Sviluppo Dei Processi ChimiciSettore ING-IND/10 - Fisica Tecnica IndustrialeSalinity Gradient Power (SGP) Reverse Electrodialysis (RED) Exergy AnalysiEnergy productions Irreversibility
researchProduct

Irreversible gelation of thermally unfolded proteins:structural and mechanical properties of lysozyme aggregates

2010

The formation of protein aggregates is important in many fields of life science and technology. The morphological and mechanical properties of protein solutions depend upon the molecular conformation and thermodynamic and environmental conditions. Non-native or unfolded proteins may be kinetically trapped into irreversible aggregates and undergo precipitation or gelation. Here, we study the thermal aggregation of lysozyme in neutral solutions. We characterise the irreversible unfolding of lysozyme by differential scanning calorimetry. The structural properties of aggregates and their mechanisms of formation with the eventual gelation are studied at high temperature by spectroscopic, rheolog…

Models MolecularProtein FoldingCircular dichroismGelationProtein ConformationDiffusionBiophysicsProtein aggregationUnfoldingchemistry.chemical_compoundDifferential scanning calorimetryProtein structureAnimalsQuantitative Biology::BiomoleculesChemistryPrecipitation (chemistry)Circular DichroismTemperaturePercolationGeneral MedicineBlood Coagulation FactorsSettore FIS/07 - Fisica Applicata(Beni Culturali Ambientali Biol.e Medicin)Thermal irreversibilityCrystallographyChemical physicsThermodynamicsMuramidaseProtein foldingLysozymeProtein aggregation
researchProduct