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Multiple choice chemistry energy rocks and minerals petroleum and natural gas fossil fuels

Complete removal of ______ from gasoline is done by Unisol process using caustic soda and methyl alcohol. 

  1. asphalt

  2. mercaptans

  3. diolefins

  4. waxes
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Unisol process is a regenerative method for not only extracting or removing mercaptans but also some of the nitrogen compounds. In this process first gasoline is washed counter-currently with aqueous caustic methanol solution. The spent caustic is regenerated in a stripping tower where the methanol, water and mercaptans are extracted.