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Facilities Tarabara
group has approximately 1,000 sq. ft. of laboratory space. In
addition to stationary workbenches, the laboratory has four mobile
reconfigurable experimental stations. There are also four stationary
fume hoods, glove box with solvent resistant windows, two cold
rooms, and a biosafety cabinet.
Controlled temperature and humidity chamber is used to cast membranes
by wet and vapor-induced phase inversion methods. Membranes are
cast using micrometric casting knives mounted on the Elcometer
automatic film applicator.
Membrane testing equipment includes:
- Four stand-alone crossflow filtration rigs:
- NF/RO unit equipped with two high pressure SEPA CF II
cells and currently used in a desalination project.
- NF/UF/MF unit housed within a biosaftey cabinet for virus
separation work. A modified version of Sterlitech CF042
cross-flow membrane filtration cell is a part of this system.
- NF/UF/MF unit for experiments with ceramic membranes.
The unit is currently used in a project on photocatalytic
membrane reactors for virus removal and inactivation.
- Rotating flow/membrane unit for oil-water separation.
- Sterlitech HP4750 high pressure normal flow stirred membrane
filtration cell.
- A variety of dead-end micro- and ultrafiltration modules (Amicon
8010, 8200, 8400 stirred cells).
The group has following particle and surface characterization
instruments:
- Brookhaven ZetaPALS apparatus for the determination of particle
size distribution (for particles in the size range of 2 nm to
3 micron) and zeta-potential of
particles ( for particles in size range of 2 nm to 30 micron)
- Malvern Mastersizer 2000 for particle size analysis of polydisperse
suspensions and emulsions. This instrument also provides a limited
capability for the measurement of fractal dimensions of particle
aggregates.
- Brookhaven EKA electro-kinetic analyzer for the determination
of zeta-potentials of macroscopic surfaces (e. g. clean and
fouled membranes). The analyzer is equipped with rectangular
cell and a clamp cell.
Electrokinetic analizer and ZetaPALS (left) and Malvern Mastersizer
2000 (right)
High
pressure crossflow filtration system
The laboratory also has a selection of support instruments
and equipment including pumps of different capacity, circulating
chillers, Shimadzu MultiSpec 1501 photodiode array spectrophotometer,
sonicator. Automated data acquisition systems based on custom-written
LabView codes for real-time recording of pressure, flow,
temperature, turbidity values, etc. are available. |
Environmental Engineering research laboratories. The
Environmental Engineering research laboratories have the analytical
capabilities to perform most environmental analyses. Capabilities
include gas chromatography, mass spectrometry, high-pressure liquid
chromatography, atomic absorption spectroscopy, inductively coupled
argon plasma emission spectroscopy, ion chromatography, most other
forms of light spectroscopy (UV, visible, FTIR, fluorescence),
and numerous specialty analyzers such as total organic carbon.
Standard laboratory equipment including balances, centrifuges,
vacuum and compressed air pumps, extraction equipment, refrigerators
and freezers and a variety of meters are readily available.
Relevant facilities and equipment available at MSU. Based
on the usage agreement between the PI and the NSF Center for Sensor
Materials at MSU, the following microscopy and analytical instrumentation:
(1) Hitachi S-4700II FE SEM and JEOL 840A SEM equipped with Energy
dispersive X-ray spectrometer, (2) Dimension 3100 scanning probe
microscope, and (3) TEM (JEOL 220 FS). An RMC 7 cryoultramicrotome
is available at MSU Composite Materials and Structures Center
Laboratory and will be used for the microstructural analysis of
clean and fouled membranes. Other specialty laboratories available
on campus include several state of the art mass spectrometers
(including PerSeptive Biosystems Voyager STR and Elite MALDI-TOF
mass spectrometers), an X-ray photoelectron spectroscopy instrument.
Machine shop and a glass shop are available.
Data acquisition and office computers. The
Tarabara group utilizes a local area network in a Windows environment
for data transfer and analysis. There are currently 9 laboratory
PCs and 7 office PCs on the network. |