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Congratulations to Dr. Ashok Paudel

Tuesday, February 24, 2015 18:47

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Dr. Paudel with his advisor after the PhD defense

Ashok Paudel has completed his PhD in chemistry from the department of chemistry and civil engineering, Queen’s University, Kingston, Canada; six more Nepali students are attending this department.

Congratulations Dr. Paudel.

Dr. Paudel worked with Prof Jessop in the development of novel methods for the extraction of algae for biodiesel desirable lipids.

His work recently has been published in Bioresource technology.

You may visit his ResearchGate profile here.

Dr. Paudel’s PhD dissertation summery is given below.

The use of CO2-expanded methanol (cxMeOH) and liquid carbon dioxide (lCO2) is proposed to extract lipids from Botryococcus braunii. When compressed CO2 dissolves in methanol, the solvent expands in volume, decreases in polarity and so increases in its selectivity for biodiesel desirable lipids. Solid phase extraction of the algal extract showed that the cxMeOH extracted 21 mg of biodiesel desirable lipids per mL of organic solvent compared to 3 mg/mL using either neat methanol or chloroform/methanol mixture. The non-polar lCO2 showed a high affinity for non-polar lipids. Using lCO2, it is possible to extract up to 10% neutral lipids relative to the mass of dry algae. Unlike extractions using conventional solvents, these new methods require little to no volatile, flammable, or chlorinated organic solvents.

Source: http://www.nepachemistry.com/2015/02/congratulations-to-dr-ashok-paudel.html

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