We review our recent work on the deterministic (top down) micro/nano structuring and stochastic (random) micro/nano texturing of polymeric materials for a variety of applications. We create polymeric microfludics/microsystems using plasma processing as well as 'smart' polymer surfaces with controlled wetting and optical properties. First, fabrication of polymeric micro-nanosystems and microfluidics using standard photolithography followed by plasma etching is proposed as an alternative method for polymer microfabrication. Second, plasma induced polymer nanoroughening (nanotexturing) is proposed as an extremely attractive methodology to control the wetting properties of polymers and create superhydrophilic or hydrophobic or robust superhydrophobic polymer surfaces. These surfaces may in addition possess controlled optical properties, such as antireflectance combined with good transmittance. Third, ordered spontaneously formed structures are created on plasma processed polymers. Potential applications are discussed.
- Inderscience Publishers
- Micro and nano structuring and texturing of polymers using ...
Micro-zooplankton grazing as a means of fecal bacteria removal in stormwater BMPs
A priority for environmental managers is control of stormwater runoff pollution, especially fecal microbial pollution. This research was designed to determine if fecal bacterial grazing by micro-zooplankton is a significant control on fecal bacteria in aquatic best management practices (BMPs); if grazing differs between a wet detention pond and a constructed wetland; and if environmental factors enhance grazing. Both 3-day grazing tests and 24-h dilution assays were used to determine grazing differences between...
Separating micro pollutants by an innovative membrane process.
Combined adsorption of micro pollutants on activated carbon and membrane filtration of MICRODYN-NADIR has proven an alternative to the established activated carbon/precipitation/sand filtration process.Contamination of the environment by micro pollutants has clearly been proved by now. Due to the high concentration of microorganisms and the contamination by antibiotics coming from animal breeding, hospitals and ambulant applications, elimination of micro pollutants in biologically treated wastewater becomes more...
A new reactor for denitrification and micro-particle removal in recirculated aquaculture systems
A ‘membrane-denitrification’ reactor (MDR) was developed and tested in a semi-technical recirculation aquaculture system in comparison to a double – without MDR – as reference system. The MDR consisted of a reactor with an ultrafiltration membrane unit for removal of micro-particles (e.g. sludge flocs, bacteria and parasites). Specific carrier material provided surfaces for biofilm growth in a fluidized bed reactor with ethanol as carbon source for denitrification. The continuous motion of these carriers cleaned...
Development of a Cleaning Validation Method for MICRO® A07 Citric Acid Cleaner Using HPLC-CAD
AbstractA high performance liquid chromatography (HPLC) method with a Corona Charged Aerosol detector for the cleaning validation of MICRO* A07 Citric Acid Cleaner residue has been developed. The pooled average repeatability of 3 replicates at 6 concentration levels expressed as RSD was 1.3 % while the pooled average intermediate precision (intra-day repeatability in 3 days) of 3 replicates at 6 concentration levels was 2.4 %. Simulated maximum allowable carryover (MAC) was calculated by using 10 ppm of MICRO®...
Steel Fire Sprinkler Tank Inspection Case Study
These images show the steel fire sprinkler tank before any preparation work and then after preparation. The steel fire sprinkler tank was fully relined with Acothane DW. A Logistics company in Berkshire recently had an R.O.V Inspection carried out on their Fire Tank, we also provided them a sprinkler tank maintenance. The sprinkler tank inspections confirmed significant amounts of corrosion to numerous areas of the internal substrate. The overall size of the fire sprinkler tank is approximately 9.2m diameter x...