Penyerapan Logam Krom dalam Limbah Cair Laboratorium Kimia Menggunakan Adsorben Tanah Napa
Abstract: It has been
investigated the adsorbtion of chrom metal in chemistry laboratory liquid waste
using tanah napa as an adsorbent. Waste containing chrom metal was pass through
a coloum that filled with tanah napa adsorbent. It is studied the use of nitrit
acid (HNO3) for regeneration purpose and recovery of chrom metal at various
concentration. The result showed that HNO3 at concentration 0.4M was the best
for regeneration of Chrom(III) is 78.03% and concentration 0.3M for
regeneration of Chrom(VI) is 53.02%. The optimum condition of this method were
applied to preconcentration of Chrom in chemistry laboratory liquid waste with
HNO3 0.3M. The result show that Chrom found in chemistry laboratory liquid
waste which is initially 0.9123 ppm can be preconcentration to 1.7760 ppm with
5x10mL preconcentration.
Penulis: Mawardi Anwar, Hary
Sanjaya, Victoria Frisiananda
Kode Jurnal: jpkimiadd130464
