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1212 Hfm Images For Publication, Frank Huang
1212 Hfm Images For Publication, Frank Huang
Energize New Mexico (NSF EPSCoR Track 1 IV)
This document contains images of PVDF Hollow Fiber Membranes (HFMs) taken using a Scanning Electrom Microscope (Hitachi 3200N).
1513 Hfm Images For Publication, Frank Huang
1513 Hfm Images For Publication, Frank Huang
Energize New Mexico (NSF EPSCoR Track 1 IV)
This document contains images of PVDF Hollow Fiber Membranes (HFMs) taken using a Scanning Electrom Microscope (Hitachi 3200N). The fibers in this document were fabricated using 15% PVDF, 13% Ethylene Glycol (EG), and 72% N-Methyl-2-Pyroliddinone (NMP).
Oct 20 Freeze Dry Hfm Porosity, Frank Huang
Oct 20 Freeze Dry Hfm Porosity, Frank Huang
Energize New Mexico (NSF EPSCoR Track 1 IV)
This workbook contains porosity calculations for 12% PVDF membranes fabricated on Oct 20th, 2016.
Hollow Fiber Tensile Testing, Frank Huang
Hollow Fiber Tensile Testing, Frank Huang
Energize New Mexico (NSF EPSCoR Track 1 IV)
These are a collection of tensile tests and calculations/analysis of those tests that were performed on hollow fiber membranes. The apparatus used was an ESM303 tabletop tensile tester with a 10kg Mark-10 load cell. The individual tests have the gauge length noted in the file and calculations shown.
Phreeqc Possible Precipitates Nwc, Frank Huang
Phreeqc Possible Precipitates Nwc, Frank Huang
Energize New Mexico (NSF EPSCoR Track 1 IV)
This workbook contains possible precipitates that may be formed from the geothermal water extracted from the deep well at Masson Farms.
Various Sem Images, Frank Huang
Various Sem Images, Frank Huang
Energize New Mexico (NSF EPSCoR Track 1 IV)
These documents contain various images of membranes, powders and various items related to the production of DCMD membranes. These were to characterize membrane thickness, macrostructure and surface characteristics. This includes secondary electron images, energy dispersive spectroscopy, and a few backscatter electron images. The machine used was a Hitachi S3200-N.
Varying Eg Membrane Pore Size Averages, Frank Huang
Varying Eg Membrane Pore Size Averages, Frank Huang
Energize New Mexico (NSF EPSCoR Track 1 IV)
This workbook contains values for the min, mean, and max pore sizes of membranes fabricated with 12% PVDF, varying concentrations of ethylene glycol (EG), and N-methy-2-pyroliddinone.
Varying Eg Membrane Porosity Calculations, Frank Huang
Varying Eg Membrane Porosity Calculations, Frank Huang
Energize New Mexico (NSF EPSCoR Track 1 IV)
This workbook contains values and calculations for the porosity of membranes fabricated with 12% PVDF, varying concentrations of ethylene glycol (EG), and N-methy-2-pyroliddinone.
Porosity Data, Frank Huang
Porosity Data, Frank Huang
Energize New Mexico (NSF EPSCoR Track 1 IV)
This workbook contains several membrane porosity values for both 1212 and 15113 membranes. The porosity values were calculated individually using separate, distinct membrane samples. The gravimetric method was used for calculating porosity. The 1212 membranes were fabricated using 12% PVDF polymer powder, 12% ethylene glycol (EG), and 76% N-methy-2pyrrolidinone (NMP); while the 1513 membranes were fabricated using 15% PVDF, 13% EG, and 72% NMP. High porosity is beneficial in membrane distillation because porosity is positively correlated with vapor transport. By measuring and controlling membrane porosity, we are able to fabricate membranes which are performance optimized.
15 13 Rheology At Various Temperatures, Frank Huang
15 13 Rheology At Various Temperatures, Frank Huang
Energize New Mexico (NSF EPSCoR Track 1 IV)
This workbook contains the rheological analysis and results of a membrane polymer solution containing 15% PVDF polymer powder, 13% ethylene glycol (EG), and 72% N-methyl-2-pyrrolidinone. This rheological study was performed in order to determine the optimal temperature for polymer solution extrusion during the membrane fabrication process. In order to effectively extrude hollow fiber membranes under current conditions, the polymer solution viscosity needs to relatively low.
Cloudpoint Analysis, Frank Huang
Cloudpoint Analysis, Frank Huang
Energize New Mexico (NSF EPSCoR Track 1 IV)
Quantitative cloud-point analysis allows for control of membrane characteristics like macro-void structure within a hollow fiber. Cloud-point is the point when instantaneous demixing occurs in membrane fabrication. Polyvinylidene fluoride (PVDF) membrane solution was tested with various solutions of Isopropyl Alcohol (IPA) and water to find the point of instant membrane formation. Currently there are no well-defined methods for measuring cloud-point. The data in this spreadsheet represents turbidity data using 12 and 15 ml samples in a turbidimeter. The transmittance data was gathered from a spectrophotometer using a laser and photo sensor. Transmittance data was from a spectrophotometer in the lab …
New Masson Water Chemistry, Frank Huang
New Masson Water Chemistry, Frank Huang
Energize New Mexico (NSF EPSCoR Track 1 IV)
This workbook contains the chemical analysis of a geothermal water sample taken at the inlet of the membrane distillation pilot plant located at Masson Geothermal Greenhouse. Additionally, this workbook contains the calculations necessary for simulating the geothermal water in a laboratory setting. These calculations are important to the membrane distillation bench-scale experiments, because they allow us to simulate the geothermal water at the pilot-plant; this allows us to study the fouling potential (precipitation behavior) of the water in a controlled laboratory setting.
Od, Id, And Wall Thickness For 1212 And 1513, Frank Huang
Od, Id, And Wall Thickness For 1212 And 1513, Frank Huang
Energize New Mexico (NSF EPSCoR Track 1 IV)
This workbook contains several measurements of the outer diameter, inner diameter, and wall thicknesses of hollow fiber membranes. Measurements were taken of both 1212 and 1513 fibers; these two fiber types are named with respect to their fabrication conditions. The 1212 fibers were fabricated using 12% PVDF polymer powder, 12% ethylene glycol (EG), and 76% N-methyl-2-pyroliddinone (NMP), while the 1513 fibers were fabricated using 15% PVDF, 13% EG, and 72% NMP. The 1212 and 1513 fibers were extruded using a dual bore spinneret, and a 60% and 50% Isopropyl alcohol coagulation bath, respectively. The measurements were obtained using scanning electron …