Ammonium Di-Hydrogenocitrate and Mono-Hydrogenocitrate Synthesis by Citric Acid Neutralization with Ammonia Using Ethanol as Co-Solvent for the Crystallization – Swelling Test to Confirm Gases Emissions Capacity

Citric acid is a α-hydroxylated tricarboxylic acid present in abundance in lemon. More than one million tons of citric acid are industrially produced throughout the year. Our objective in this manuscript was to increase the value of the citric acid to ammonium citric acid salts by crystallization such as ammonium Di-hydrogenocitrate and ammonium mono-hydrogenocitrate. Studies and tests were carried out in this direction but the characteristic of our last process was the use of a co-solvent ethanol which proved more effective and more economical. At the end, we tested the capacity of the ammonium Di-hydrogenocitrate and the ammonium mono-hydrogenocitrate to swell a mixture and compared theirs capacities to the sodium bicarbonate. Results showed an excellent swelling capacity of the ammonium Di-hydrogenocitrate and ammonium mono-hydrogenocitrate to produce a uniformly very not much porous product’s texture