|
| |
Services
 | Diagnostic evaluations of desalination and water
purification processes |
| Evaluation and ranking of antiscalant effectiveness |
| Membrane RO process analysis |
| Advanced numerical process modeling and analysis of
pilot-studies |
| Evaluation of residuals minimization, treatment, and
disposal strategies |
| Membrane characterization and selection for targeted
applications |
| Diagnostic testing of scaling and fouling and development
of mitigation processes |
Analytical capabilities
Membrane Performance Testing
| Three high pressure plate-and-frame
RO membrane systems with data acquisition system and online
monitoring of pH, permeate flux, conductivity, calcium potential and
temperature. |
| Ex-situ high pressure RO system with
on-line membrane surface optical imaging capability |
| Spiral-wound RO system computerized
data acquisition and control, integrated with a filtration system
for pre-treatment and a heat exchanger for temperature. The system
is capable of on-line monitoring of temperature, pH, turbidity and
calcium. |
| Two tubular module ultrafiltration
systems |
| Rapid back-pulsing microfiltration/ultrafiltration
(pre-treatment) test system |
| Several high- and low-pressure
dead-end membrane filtration devices |
| Test systems for 2”, 4”, and 8”
spiral-wound membrane elements |
| Ex-Situ Scale observation Detector (EXSOD)
for monitoring the onset of membrane scaling |
| High resolution optical imaging
system for surface scale and fouling characterization |
|
Membrane Testing
| Streaming potential analyzer (EKA,
Brookhaven Inst. Corp.) for establishing surface electrokinetic
property (zeta potential) of membranes |
| Contact angle goniometer (DS10,
Kruss, GMbH) for measuring solid surface energy, surface wetting
behavior, and surface charge density of membranes |
| Optical microscope (BX51W, Olympus)
with light and fluorescent detection at 10X, 20X, and 40X for direct
observation of surface fouling phenomena |
|
Analytical Equipment
| Digilab FTS40 FTIR spectrometer with
a TGA interface. System is used for quantification and
identification of chemical functionality of native and modified
membranes and foulants. |
| Multimode III Atomic Force
Microscope with liquid cell capabilities (Veeco Instruments). |
| High resolution scanning electron
microscope (Hitachi S4700 Field Emission SEM, Japan), along with
surface sputtering system for specimen preparation and EDX surface
elemental analysis Scanning electron microscope (SEM) for imaging
surface morphology |
| MaxTek Quartz Crystal Microbalance
system with a computerized data acquisition system. System is
interfaced with a potentiostat and a frequency counter. |
| Automated SDI measurement system
|
| Three HPLC systems (ISCO HPLC, Model
2350; Varian 5000; and Waters Model 590) with gradient capability,
automatic injectors, fraction collectors, data acquisition system
and MW determination software. Detectors: UV/VIS diode array,
conductivity, IR and RI. Quantachrome Autosorb-1 surface area and
pore size analysis determination system. |
| Perkin-Elmer System II
Thermogravimetric analyzer with System 4 controller. |
| Two gas chromatographs (Dual column
programmable HP 5890 gas chromatograph with FID and ECD detectors;
SRI 8601C programmable chromatograph). |
| Surface tensiometer (CSC-DuNouy
7045) |
| Contact angle measuring instrument (Kruss
G23) |
|
Other Equipment available in the Environmental Engineering Analytical
Chemistry Laboratory:
• Gas Chromatograph-Mass Spectrometers:
• Finnigan 4000 with Varian 3400 GC (SPI & Splitless inj.) and Galaxy Data Sys.
• HP 5973 with HP 6890 plus GC (Splitless & Purge and Trap) and ChemStation
• Gas Chromatographs:
• Varian 3500, Splitless Injector, Dual ECDs, Star Data System
• Varian 6000, Splitless and Packed Injectors, Dual FIDs, ECD, Star Data System
• Varian 6000, Splitless and Packed Injectors, Dual FIDs, Star Data System
• Varian 3700, Dual Splitless Injectors, Dual FIDs, Star Data System
• Varian 3700, Splitless and Packed Injectors, Dual FIDs, Star Data System
• Varian 3400, Splitless Injector, No detectors
• HP 5890 with Tekmar 4000 P&T, ECD and FID, HP Integrator
• Liquid Chromatographs:
• HP 1050, Autosampler, UV Detector, HP Integrator
• Varian 5000, UV Detector, Integrator;
• Waters 6000 hybrid, UV and Absorbance detectors
• Ion Chromatographs:
• Dionex 2020I and Dionex DX-600 Conductivity Detectors and Data System
• Atomic Absorption:
• Perkin-Elmir 3300, Flame, Mercury/Hydride System, PC based Data System
• Perkin-Elmir 603, Flame and Graphite Furnace
• Total Organic Carbon:
• Tekmar Apollo 9000 TOC Analyzer, PC based Data System
• Spectrophotometers:
• Perkin-Elmir Lambda 20, UV/Vis, PC based Data System; Spectronic 20 (various)
• Extraction Apparatus:
• CEM MARSx Microwave Extraction and Digestion Unit
• Tekmar Autotrace SPE Workstation
• Continuous Liquid/Liquid Extractors
• SPE Extraction (cartridge and disk); SPME (solid phase microextraction)
• Miscellaneous:
• Hach COD digestion apparatus
• Dissolved Oxygen meters (various)
• pH Meters (various); TDS and Conductivity meters (various)
• TKN digestion apparatus
• Hach Turbidimeters and Wyatt/Nicomp Particle Sizing System
|
