Further treatments for glycerol by-

Further treatments for glycerol by-products generally
involve neutralization and recycling to remove the excess
methanol, the catalyst and soap.21 One popular option is to
use potassium hydroxide as the reaction catalyst and
phosphoric acid for neutralization so that the potassium
phosphate salt formed can be used as fertilizer. Following
acidulation and separation of the free fatty acids, the methanol
in the glycerol can be removed by evaporation using a vacuum
flash process. Depending on the type of separation process
used, the final glycerol purity is about 80–95%.22 Such crude
glycerol is typically sold to industrial glycerol refiners at a low
cost.14,16 Most (97%) of the glycerol used today is a highly
refined product (97%+ purity) – the glycerol refining process
can take the purity up to 99.5% to 99.7% using vacuum
distillation or ion exchange processes.23 However, these
processes are expensive and small biodiesel plants usually
discard the glycerol by-product as waste.

ผลลัพธ์ (อังกฤษ) 2:

Further Treatments for glycerol by-products generally.
involve Neutralization and Recycling to Remove The excess.
methanol, The Catalyst and Soap.21 One popular Option is to.
Use Potassium hydroxide As The Reaction Catalyst and.
phosphoric acid for Neutralization So that The Potassium.
phosphate Salt formed Can be used as fertilizer. Following
Acidulation and Separation of free fatty acids The, The methanol.
in The glycerol Can be removed by using a Vacuum Evaporation.
Flash Process. The type of depending on Separation Process.
Used, The Final glycerol Purity is About 80-95% .22 Such Crude.
glycerol is Typically SOLD to Industrial glycerol at a Low Refiners.
Cost.14,16 Most (97%) of today is Used The glycerol. a highly
refined product (97% + Purity) - The glycerol Refining Process.
Can Take The Purity up to 99.5% to 99.7% using Vacuum.
distillation or Ion Exchange Processes.23 However, these.
processes are expensive and Small Biodiesel Plants usually.
Discard The glycerol by -product as waste.