Adsorpsi Ion Cd2+ dalam Larutan Menggunakan Karbon Aktif dari Biji Trembesi (Samanea saman); Optimasi pH dan Waktu Kontak

Vella Carella Wijaya, Ita Ulfin
Submission Date: 2015-08-05 10:10:52
Accepted Date: 2016-01-21 12:09:03

Abstract


Adsorpsi ion Cd2+ dalam larutan menggunakan karbon aktif yang terbuat dari biji trembesi telah dilakukan. Biji trembesi (Samanea saman) dikarbonisasi dan diaktivasi dengan asam fosfat (H3PO4) untuk mengurangi kadar ion Cd2+ dalam larutan. Adsorpsi dilakukan dengan metode batch dengan 2 g/L karbon aktif dengan mengetahui pH adsorbat. Hasil yang diperoleh yaitu pH optimum proses adsorpsi ion Cd2+ terjadi pada pH 7 dengan jumlah ion Cd2+ yang teradsorpsi sebesar 97,11%.

Keywords


adsorpsi; aktivator H3PO4; biji trembesi; ion Cd2+; karbon aktif

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