Search results for "Phase partition"

showing 2 items of 2 documents

Biotrickling filter modeling for styrene abatement. Part 2: Simulating a two-phase partitioning bioreactor.

2017

Abstract A dynamic model describing styrene abatement was developed for a two-phase partitioning bioreactor operated as a biotrickling filter (TPPB-BTF). The model was built as a coupled set of two different systems of partial differential equations depending on whether an irrigation or a non-irrigation period was simulated. The maximum growth rate was previously calibrated from a conventional BTF treating styrene (Part 1). The model was extended to simulate the TPPB-BTF based on the hypothesis that the main change associated with the non-aqueous phase is the modification of the pollutant properties in the liquid phase. The three phases considered were gas, a water–silicone liquid mixture, …

Environmental EngineeringMaterials scienceHealth Toxicology and MutagenesiseducationBiotrickling filter02 engineering and technology010501 environmental sciencesThermal diffusivity01 natural sciencesTwo-phase partitioning bioreactor.Styrene:Enginyeria química::Química del medi ambient::Química atmosfèrica [Àrees temàtiques de la UPC]Filter (large eddy simulation)chemistry.chemical_compoundBioreactorsSilicone oilMass transferPhase (matter)Air PollutionCalibrationBioreactorEnvironmental ChemistryGases - PurificationEnvironmental Restoration and RemediationStyrene0105 earth and related environmental sciencesMass transfer coefficientWater PollutionPublic Health Environmental and Occupational HealthEnvironmental engineeringGeneral MedicineGeneral ChemistryMechanicsModels Theoretical021001 nanoscience & nanotechnologyPollutionGasos - DepuracióBiodegradation EnvironmentalchemistryModels ChemicalBiofilmsMathematical modelingBiological air treatment0210 nano-technologyFiltrationChemosphere
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Atomic-force microscopy imaging of plasma membranes purified from spinach leaves

2000

Summary: Plasma membranes purified from spinach leaves by aqueous two-phase partitioning were examined by atomic-force microscopy (AFM) in phosphate buffer, and details on their structure were reported at nanometric scale. Examination of the fresh membrane preparation deposited on mica revealed a complex organization of the surface. It appeared composed of a first layer of material, about 8 nm in thickness, that practically covered all the mica surface and on which stand structures highly heterogeneous in shape and size. High-resolution imaging showed that the surface of the first layer appeared relatively smooth in some regions, whereas different characteristic features were observed in ot…

Materials scienceAqueous solutionbiologyProteolytic enzymesAtomic-force microscopyCell BiologyPlant ScienceGeneral MedicineSurface finishSpinachbiology.organism_classificationLeaf cellsPlasmalemmaMembraneddc:580Chemical engineeringBiochemistryPhase partitionMicroscopySpinachMicaLayer (electronics)
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