Facilities in Dr. Tarabara's laboratory
Tarabara group has approximately 1,100 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, controlled temperature and humidity
glove box with solvent resistant windows, and controlled temperature
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 systems:
- 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 biosafety 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
- A variety of dead-end micro- and ultrafiltration modules (Amicon
8010, 8200, 8400 stirred cells).
Equipment for biosafety level 2 work includes 72" biosafety
cabinet (Thermo Scientific 1300 Series), forced-air incubator
(Fisher Scientific 11-690-650F), and an autoclave (Panasonic MLS-3781L-PA).
The group has following particle and surface characterization
- 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
- 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.
- Ramé-Hart Standard Goniometer / Tensiometer Model 250
for measurements of static and dynamic contact angle, surface
energy, and surface tension.
The laboratory also has a selection of support instruments and
equipment including pumps of different capacity, circulating chillers,
Shimadzu MultiSpec 1501 photodiode array spectrophotometer, horn
and bath sonicators. Automated data acquisition systems based
on custom-written LabView codes for real-time recording of pressure,
flow, temperature, turbidity values, etc are available.
Shared use equipment housed in the laboratory
Data acquisition and office computers
The Tarabara group utilizes a local area network in a Windows
environment for data acquisition, transfer and analysis. There
are 10 data acquisition PCs and 11 office PCs on the network.
Other facilities on campus
Environmental Engineering research laboratories
located in the
Engineering Research Complex (wing A) 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.
Electron microscopy. The
Center for Advanced Microscopy at MSU provides 24/7 access
to scanning electron microscopes, transmission electron microscopes,
and confocal laser scanning microscopes.
- Available SEMs include JEOL 6610LV SEM with both low vacuum
and high vacuum capability and JEOL 7500F high resolution SEM
equipped with Energy dispersive X-ray spectrometer. JEOL
7500F is designed especially for the ultrahigh resolution
imaging needs of nanotechnology research. It enables high quality
imaging at magnifications up to 1,000,000X and is the highest
resolution SEM in the State of Michigan.
- TEMs include JEOL
2200 FS (for non-biological samples) and JEOL
100 CXII (for biological samples). Two ultramicrotomes -
and PTXL with a CR-X cryo- sectioning unit for cryo-ultramicrotomy
can be used for the microstructural analysis of samples such
as as-prepared and fouled membranes.