EFEKTIVITAS CANGKANG TELUR AYAM NEGERI (Gallus gallus domesticus) SEBAGAI ADSORBEN TERHADAP DAYA JERAP LOGAM BERAT MERKURI (Hg2+)

Abstract

Industrial development increases pollution in the environment, while the results of industrial waste
disposal generally produce waste containing heavy metals, one of which is mercury (Hg). Eggshell is
waste originating from households and the food industry which is made from eggs and has the potential
as an adsorbent to absorb mercury ions (Hg2 +). In this study, egg shells were prepared with two
treatments: egg shell adsorbent and with eggshells activated by 30% NaOH after heating in a furnace
at 600 oC for 2 hours then mashed with a particle size of 200 mesh. The adsorbent is then used to
absorb Hg2 + ions from the Hg (NO3) 2 compound. H2O as much as 0.01 ppm with the activated
eggshell and eggshell adsorbent weight of 2 grams each, where the adsorption process is carried out
with 2 contact times, namely 60 minutes and 120 minutes and tested with a Mercury Analyzer. The
adsorption process obtained, the optimum at the contact time of 120 minutes and the eggshell adsorbent
treatment with an average percentage of 93.931%.