Authors:

Henny Puspa Dewi Giri, I Wayan Sudiarta, Ida Ayu Raka Astiti Asih

Abstract:

“Adsorption of chromium (VI) on silica gel modified by diphenilcarbazide (Si-DPZida) have been studied. Parameters analyzed were surface acidity by acid-base titration method, specific surface area by absorption of methylene blue method, optimum conditions of adsorption (pH, contact time), and isotherm adsorption. The results showed that Si-DPZida adsorbent has surface acidity (Kal) of 1,5996 mmol/g with the number of active sites of 9,6328 x 1020 atom/g with specific surface area of 4.4538 m2/g. The optimum adsorption process of chromium (VI) by both Si-DPZida occurred at pH 5 and 15 minutes of contact time. The isotherm adsorptions on both adsorbents tend to follow Freundlich adsorption pattern.”

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PDF:

https://jurnal.harianregional.com/jchem/full-11758

Published

2014-07-01

How To Cite

PUSPA DEWI GIRI, Henny; SUDIARTA, I Wayan; RAKA ASTITI ASIH, Ida Ayu. OPTIMASI ADSORPSI Cr(VI) PADA SILIKA GEL DARI ABU SEKAM PADI TERMODIFIKASI DIFENILKARBAZIDA (Si-DPZida).Jurnal Kimia (Journal of Chemistry), [S.l.], july 2014. ISSN 2599-2740. Available at: https://jurnal.harianregional.com/jchem/id-11758. Date accessed: 28 Aug. 2025. doi:https://doi.org/10.24843/JCHEM.2014.v08.i02.p09.

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Issue

Vol. 8, No. 2 Juli 2014

Section

Articles

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