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SUPERCRITICAL FLUID


Posted by: seminar surveyer
Created at: Wednesday 22nd of December 2010 01:03:02 AM
Last Edited Or Replied at :Wednesday 04th of May 2011 07:18:50 PM
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h diffusivity of SCF
Easily recoverable.
Non-toxic solvents leave no harmful residue.
High boiling components are extracted at relatively low temp.
Uses:
IT is largely used in Food & Flavouring industry.
This method is used for Decaffenication of tea & coffee.
Extraction of essential oils, aroma materials from spices etc.

INDEX
Introduction
Properties Of SCF
Applications
Applications ------Extraction
Applications----- Nano Particle Synthesis
Natural Occurrence
Conclusion


APPLICATIONS ---- NANO-PARTICLE SYNTHESIS
Supercritical Fluid Precipitation technology produ..................[:=> Show Contents <=:]



thesis topics for control and instrumentation


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Created at: Monday 29th of October 2012 09:20:45 AM
Last Edited Or Replied at :Saturday 01st of November 2014 01:39:23 PM
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aster program in Control Engineering.Pls i am in need of a project topic in instrumentation and control engineering in relationship with the oil and gas sector.Would like you to assist me with possible project topic on that topic and possible material.Here my email.renuld46@..................[:=> Show Contents <=:]



nanoparticle synthesis methods ppt


Posted by:
Created at: Monday 29th of October 2012 09:09:21 AM
Last Edited Or Replied at :Monday 29th of October 2012 09:09:21 AM
nanoparticle synthesis methods , nanoparticle synthesis methods ppt, ppt nanoparticle synthesis , nanoparticles preparation methods ppt, nanoparticles synthesis ppt , nanoparticle synthesis ppt, nano particle synthesis ppt , ppt for preparation method of nanoparticles, synthesis of nanoparticles ppt , ppt for nanoparticle synthesis, nanopartcle synthesis ppt , preparation of nanoparticles ppt, nanoparticles preparation ppt , synthesis nanoparticles ppt, nano synthesis ppt , ppt for preparation of nanoparticles, ppt nanoparticles , methods of nanoparticles synthesis in ppt, nanoparticles synthesis techniques ppt , synthesis method of nanoparticles ppt, nanoparticles ppt ,
i actually want to know how ..................[:=> Show Contents <=:]



biological synthesis of copper nanoparticles using plant extract


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Created at: Wednesday 03rd of October 2012 06:29:57 AM
Last Edited Or Replied at :Friday 26th of July 2013 08:16:09 AM
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biological synthesis of plant based copper nanoparticles..................[:=> Show Contents <=:]



PRODUCTION OF BIOGENIC SILVER NANOPARTICLES USING BOSWELLIA OVALIFOLIOLATA STEM


Posted by: seminar class
Created at: Friday 06th of May 2011 11:11:32 PM
Last Edited Or Replied at :Friday 06th of May 2011 11:11:32 PM
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g a blotting paper and then the film on the SEM grid were allowed to dry by putting it under a mercury lamp for 5 min.
EDAX measurements
In order to carry out EDAX analysis, the bark extracts reduced silver nanoparticles were dried and drop coated on to carbon film and performed on Hitachi S-3400 N SEM instrument equipped with a Thermo EDAX attachments.
3. Results and discussion
Reduction of silver ion into silver particles during exposure to the plant extracts could be followed by color change. Silver nanoparticle exhibit dark yellowish – brown color in aqueous solution du..................[:=> Show Contents <=:]



Super critical Fluids and its Applications


Posted by: seminar class
Created at: Tuesday 19th of April 2011 12:16:12 AM
Last Edited Or Replied at :Tuesday 19th of April 2011 12:16:12 AM
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fluid (at const. temp.).
• Since density increases with pressure, solubility tends to increase with pressure. At constant density, solubility will increase with temperature.
• However, close to the critical point, the density can drop sharply with a slight increase in temperature.
• Therefore, close to the critical temperature, solubility often drops with increasing temperature, then rises again.
NATURAL OCCURRENCE
• Submarine -Volcanoes: Steam & gases which are releases from the volcanoes are in high pressure (about 300atm) & temperature (>275*C).
• Planetary –a..................[:=> Show Contents <=:]



Nano-Particulate Technology Synthesis


Posted by: seminar class
Created at: Friday 04th of March 2011 12:49:58 AM
Last Edited Or Replied at :Friday 04th of March 2011 12:49:58 AM
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mponents in electrodes
As low-temperature electrolytes in solid xide fuel cells (SOFC)
Sunscreen:
To protect human screen from harmful UV rays
Nanomaterials are effective sun blockers
Semiconductor Polishing:
CMP slurries with fumed silica, collidal silica
Ceria, alumina dispersions in nano-sizes
High planarity, efficient removal, unique surface chemistry
Nano-Particles
Fundamental building blocks of nano-technology
Starting point for “bottom-up” approaches for preparing nano-structured materials & devices
Their synthesis is an important research component
Nano-Particle Synthe..................[:=> Show Contents <=:]



SUPERCRITICAL FLUID


Posted by: seminar surveyer
Created at: Wednesday 22nd of December 2010 01:03:02 AM
Last Edited Or Replied at :Wednesday 04th of May 2011 07:18:50 PM
latest supercritical fluid extraction project report, supercritical fluid extraction ppt , supercritical fluids ppt, supercritical fluids ppt chemical engineering , supercritical water for nanoparticle synthesis ppt, supercritical fluid ppt , supercritical fluid extraction nanoparticle synthesis, definition of supercritical fluid , supercritical fluid extraction in food ppt, super critical fluid ppt , tea aroma and supercritical fluid extraction, natural occurence supercritical fluids , supercritical fluids electricity production, super critical fluids , seminar topic on supercritical fluids, seminar topic on supercritical fluid extraction , supercritical fluid,
al Fluid with feed material.
Soluble material dissolve into the Supercritical Fluid.
The extracted component then separated by changing pressure & temperature.
Finally the SCF recompressed & recycled.


APPLICATIONS ------EXTRACTION
Advantages:
It is relatively rapid for low viscosity & high diffusivity of SCF
Easily recoverable.
Non-toxic solvents leave no harmful residue.
High boiling components are extracted at relatively low temp.
Uses:
IT is largely used in Food & Flavouring industry.
This method is used for Decaffenication of tea & coffee.
Extraction of essential oils, a..................[:=> Show Contents <=:]



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