Search results for "SGP"

showing 4 items of 14 documents

Performance of a RED system with ammonium hydrogen carbonate solutions

2016

The use of closed-loop salinity gradient power (SGP) technologies has been recently presented as a viable option to generate power using low-grade heat, by coupling a SGP unit with a thermally-driven regeneration process in a closed loop where artificial solutions can be adopted for the conversion of heat into power. Among these, the closed-loop reverse electrodialysis (RED) process presents a number of advantages such as the direct production of electricity, the extreme flexibility in operating conditions and the recently demonstrated large potentials for industrial scale-up. Ammonium hydrogen carbonate (NH4HCO3) is a salt suitable for such closed-loop RED process thanks to its particular …

Settore ING-IND/26 - Teoria Dello Sviluppo Dei Processi ChimiciSettore ING-IND/25 - Impianti ChimiciMechanical engineeringSalt (chemistry)Ocean Engineering02 engineering and technology010501 environmental sciences7. Clean energy01 natural sciencesHeat-to-powerPhase (matter)Waste heatReversed electrodialysisReverse electrodialysiOsmotic powerSalinity gradient powerProcess engineeringAmmonium hydrogen carbonate0105 earth and related environmental sciencesWater Science and Technologychemistry.chemical_classificationSettore ING-IND/24 - Principi Di Ingegneria Chimicabusiness.industry021001 nanoscience & nanotechnologyPollution6. Clean waterPower (physics)Reverse Electrodialysis Salinity Gradient Power SGP heat engine Waste heat Ammonium hydrogen carbonateElectricity generationchemistryScientific method0210 nano-technologybusinessAmmonium hydrogen carbonate; Heat engine; Heat-to-power; Reverse electrodialysis; Salinity gradient powerHeat engine
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Reverse electrodialysis with NH4HCO3-water systems for heat-to-power conversion

2017

Abstract A Reverse ElectroDialysis Heat Engine (REDHE) system operating with “thermolytic” ammonium hydrogen-carbonate (NH4HCO3) aqueous solutions as working fluids is studied. The engine is constituted by (i) a RED unit to produce electric power by mixing the solutions at different salinity and (ii) a thermally-driven regeneration unit including a stripping and an absorption column to restore the initial salinity gradient thus closing the cycle. In the present work only the RED unit and the stripping column are taken into account. In particular, a simplified integrated process model for the whole cycle was developed: it consists of (i) a lumped parameter model for the RED unit validated wi…

Settore ING-IND/26 - Teoria Dello Sviluppo Dei Processi ChimiciStripping (chemistry)Salinity gradient power (SGP)020209 energyAnalytical chemistry02 engineering and technology7. Clean energyThermolytic saltIndustrial and Manufacturing EngineeringWaste heat recovery unitReversed electrodialysisThermal0202 electrical engineering electronic engineering information engineeringElectrical and Electronic EngineeringClosed-loop reverse electrodialysiWaste heat recoveryAmmonium hydrogen carbonateCivil and Structural EngineeringPower densityHeat engineWaste managementChemistryMechanical EngineeringAmmonium hydrogen carbonate; Closed-loop reverse electrodialysis; Reverse ElectroDialysis Heat Engine (REDHE); Salinity gradient power (SGP); Thermolytic salts; Waste heat recovery; Civil and Structural Engineering; Building and Construction; Pollution; Energy (all); Mechanical Engineering; Industrial and Manufacturing Engineering; Electrical and Electronic EngineeringBuilding and ConstructionElectrodialysis021001 nanoscience & nanotechnologyPollution6. Clean waterEnergy (all)General EnergyReverse ElectroDialysis Heat Engine (REDHE)Electric power0210 nano-technology
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Targeted delivery of siRNAs against hepatocellular carcinoma-related genes by a galactosylated polyaspartamide copolymer

2021

Given the lack of effective treatments for Hepatocellular carcinoma (HCC), the development of novel therapeutic approaches is very urgent. Here, siRNAs were delivered to HCC cells by a synthetic polymer containing α,β-poly-(N-2-hydroxyethyl)-D,L-aspartamide-(PHEA) derivatized with diethylene triamine (DETA) and bearing in the side chain galactose (GAL) linked via a polyethylene glycol (PEG) to obtain (PHEA-DETA-PEG-GAL, PDPG). The GAL residue allows the targeting to the asialo-glycoprotein receptor (ASGPR), overexpressed in HCC cells compared to normal hepatocytes. Uptake studies performed using a model siRNA or a siRNA targeted against the enhanced green fluorescence protein, demonstrated …

Small interfering RNACarcinoma HepatocellularPolymersHepatocellular carcinomaCellASGPR targeted delivery; E2F1; Eukaryotic elongation Factor 1A; Hepatocellular carcinoma; siRNAPharmaceutical Science02 engineering and technologyEukaryotic elongation Factor 1AMice03 medical and health sciencesIn vivomedicineAnimalsE2F1RNA Small InterferingReceptor030304 developmental biology0303 health sciencesChemistryLiver NeoplasmsASGPR targeted deliveryGalactose021001 nanoscience & nanotechnologymedicine.diseasedigestive system diseasesEukaryotic translation elongation factor 1 alpha 1In vitromedicine.anatomical_structureE2F1Settore CHIM/09 - Farmaceutico Tecnologico ApplicativoHepatocellular carcinomasiRNACancer research0210 nano-technology
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NH4HCO3–water solutions regeneration in RED closed loop applications

2017

Reverse Electrodialysis (RED) in closed loop arrangement (Reverse Electrodialysis Heat Engine - REDHE) is a promising technology to convert low-grade waste heat into electricity. RED is a membrane process exploiting the salinity gradient between a concentrated and a diluted solution to generate electrical current. Due to the transfer phenomena occurring in the RED unit, the two exiting solutions are partially mixed. Thermal regeneration processes can be used to restore the initial conditions of the two solutions, thus closing the loop. In this regard, ammonium hydrogen carbonate (NH4HCO3) salt solutions are suitable for such applications, being able to decompose at temperatures above 40-45 …

waste heatSalinity Gradient PowerAmmonium bicarbonate RED SGP.Keywords: Reverse Electrodialysis Heat Engine
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