The Effect of Contact Time and Adsorbent Dosage and Contact Time of Activated Carbon of Eucalyptus Oil Refining on Ammonia Levels (NH3) Leather Industry Liquid Waste

Abstract

Indonesia's industry expands to suit domestic demand as the population
increases. One of these is the leather processing business, which heavily
relies on both chemicals and water in its operations. Adsorption was the
approach employed in this investigation. The purpose of this study is to
establish the ideal contact dosage and contact time for ammonia waste
adsorption. The Adsorbent characterisation test results have been
discovered. The findings of the ammonia adsorption test with dose
variation showed that, at a dosage of 2.5 grams and a removal rate of 92%,
HCl 0.36 M activated carbon was more efficient than other activated
carbon. The HCl 0.036 M activated carbon was shown to be more efficient
than activated carbon in the time variation ammonia level adsorption test,
with an elimination rate of 82.48% after 25 minutes. Activated carbons
and HCl 0.36 M activated carbons follow the pattern of the Langmuir
isotherm equation and are reversible, according to the results of isotherm
tests of dosage and time variations (reversible).