Seminar Nasional Kimia XVIII
Yogyakarta, 10 Juli 2008
L24
David Irianto1*, Wahyu Budi Sabtiawan1, Millah Kartikaningtyas1, Sari Edi
Cahyaningrum1
1 Mahasiswa S‐1, Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Negeri Surabaya, Kota Surabaya
2 Jurusan Kimia FAkultas MAtematika dan Ilmu Pengetahuan Alam Universitas Negeri
Surabaya, Kota Surabaya
*email: dvd_irianto@yahoo.com, telp.(031)71846551
ABSTRACT
Adsorbtion of Cr (III) metal ion using dump of active sludge had been studied. Same
parameter of adsorption were determined suchas: the desorption mechanism, optimum
of pH, the rate and capasity of adsorption. The result showed that, desoption
mechanism of Cr(III) on dump of active sludge was dominated with kovalen coordinaton
mechanism although the other mechanism was available. Adsorption Cr(III) have been
optimum pH 2,9, with the adsorption rate k = 0,00002 menit‐1. the Equibility adsoption
the dump of active sludge was 117.60 ppm.
Keyword : Active sludge, Adsoption, Cr(III)
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