PENGARUH PERLAKUAN HCL PADA KRISTALINITAS DAN KEMAMPUAN ADSORPSI ZEOLIT ALAM TERHADAP ION CA2+
ABSTRACT: It has been done a
research to determine the influence of hydrochloric acid treatnent to
the crystalinity and adsorption capability of natural zeolite to Ca2+ ion. Activation
process was conducted by refluxing
of zeolite with
KMnOa 0.5 M and HCI
(1:1) for 4
hours with temperature of 80"C.
The various concentration of HCI
soltrtions used were 4 M (AZl),
6 M (AZZ),8 M
(AZ3) and l0 M
(AZA). Crstalinity of zeolite
was identified by
X-Ray Diftaction CXRD) while
the amount of adsorbed Ca2* ion was measured by Atomic
Absorption Spectroscopy (AAS).
The activated zeolite was applied
to adsorb calcium metal ion
using shaker for 5, 15, 60, 90
dan 120 minutes. The results showed that
the increasing of HCI concentration for zeolite activation caused
the decreasing of crystallinity
of NZ, AZl,
AZ2, AZ3 wrd AZ1
nunely 100%; 101.10%; 9l.9lo/o; 84.93o/o
and 77 .45o/o respectively. The adsorption percentage. of Ca2*
ion from conc,entration originally 698 ppm (within 60 minutes)
for NZ, AZl, AZ2,
AZ3 and AZ,4 was
successively 10.75 Vo; 20.91o/o;
l:4.610/o; 19.63% and 24.07o/o.
The results indicated that the decreasing of
crystallinity of zeolite caused the
increasing of zeolite adsorption ability
to Ca2* ion.
Penulis: Pardoyo, Listiana Listiana, Adi Darmawan
Kode Jurnal: jpmatematikadd090079
