Search results for "Micro device"

showing 3 items of 3 documents

Anodic abatement of organic pollutants in water in micro reactors

2010

The electrochemical oxidation of oxalic acid (OA) was performed in a micro flow cell equipped with a boron doped diamond (BDD) anode. This preliminary study demonstrates that a flow cell with a micrometric distance between the cathode and the anode can be used to perform the electrochemical treatment of waters contaminated by organic pollutants in the absence of added supporting electrolytes with high abatements. The effect of the distance between the cathode and the anode, the flow rate and the current density on the abatement of oxalic acid and on the current efficiency was in particular studied.

General Chemical EngineeringOxalic acidInorganic chemistrychemistry.chemical_element02 engineering and technologyElectrolyteWastewater treatment010402 general chemistryElectrochemistry01 natural sciencesAnalytical Chemistrylaw.inventionchemistry.chemical_compoundlaw[CHIM.ANAL]Chemical Sciences/Analytical chemistryElectrochemistryMicro deviceBoronMicro reactorComputingMilieux_MISCELLANEOUSElectrochemical abatementSettore ING-IND/27 - Chimica Industriale E Tecnologica021001 nanoscience & nanotechnologyOxidation of organic6. Clean waterCathode0104 chemical sciencesAnode[CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistrychemistry13. Climate actionElectrodeMicroreactor0210 nano-technologyBDD
researchProduct

Polymeric microcontainers improve oral bioavailability of furosemide.

2016

Microcontainers with an inner diameter of 223 μm are fabricated using the polymer SU-8, and evaluated in vitro, in situ and in vivo for their application as an advanced oral drug delivery system for the poorly water soluble drug furosemide. An amorphous sodium salt of furosemide (ASSF) is filled into the microcontainers followed by applying a lid using Eudragit L100. It is possible to control the drug release in vitro, and in vitro absorption studies show that the microcontainers are not a hindrance for absorption of ASSF. In situ perfusion studies in rats are performed with ASSF-filled microcontainers coated with Eudragit and compared to a furosemide solution. The absorption rate constant …

Eudragit l100PolymersPharmaceutical ScienceAdministration OralBiological Availability02 engineering and technologyAbsorption (skin)PharmacologyMicro devices030226 pharmacology & pharmacy03 medical and health sciences0302 clinical medicineDrug Delivery SystemsPolymethacrylic AcidsIn vivoDelivery systemsFurosemideOral bioavailabilitymedicineAnimalsHumansIntestinal MucosaRats WistarIntestinal mucusChromatographyChemistryFurosemide021001 nanoscience & nanotechnologyBioavailabilityDrug LiberationMucusOral deliveryEpoxy CompoundsFemaleDelivery systemIntestinal perfusionCaco-2 Cells0210 nano-technologyOral retinoidmedicine.drugInternational journal of pharmaceutics
researchProduct

Oxidation of organics in water in microfluidic electrochemical reactors: Theoretical model and experiments

2011

The electrochemical oxidation of organics in water performed in micro reactors on boron doped diamond (BDD) anode was investigated both theoretically and experimentally in order to find the influence of various operative parameters on the conversion and the current efficiency CE of the process. The electrochemical oxidation of formic acid (FA) was selected as a model case. High conversions for a single passage of the electrolytic solution inside the cell were obtained by operating with proper residence times and low distances between cathode and anode. The effect of initial concentration, flow rate and current density was investigated in detail. Theoretical predictions were in very good agr…

General Chemical EngineeringAnalytical chemistryFormic acidWastewaterElectrochemistrylaw.inventionElectric reactorCurrent densitylawMass transferSh numberElectrochemistryMicro deviceMass transferBubble formationMicro reactorMass transfer coefficientChemistryWastewater treatment Electrochemical oxidationLimiting currentSettore ING-IND/27 - Chimica Industriale E TecnologicaCathodeAnodeVolumetric flow rateTheoretical models BoronBDDCurrent densityForecastingElectrochimica Acta
researchProduct