Efisiensi pengendapan elektrolitik Perak dalam limbah pencucian Film hitam putih.

Abstract

Limbah cair fotografi mengandung ion kompleks ditiosulfatoargentat, Ag(S203)23- dengan konsentrasi sangat tinggi, sangat membaha.yakan kesehatan, karena sifat perak yang toksik. Penelitian ini bertujuan menentukan efisiensi pengendapan elektrolitik perak dalam limbah pencucian film hitam putih. Hasil penelitian menunjukkan bahwa waktu paling efektif untuk elektro¬lisis limbah cair fotografi adgah 40 menit, dengan efisiensi pengendapan 83,36%, dengan kemurnian produk 91,65%. Melihat data diatas, dapat disimpulkan bahwa ditinjau dari segi kemur¬nian, metoda elektrolisis efisien digunakan untuk mengambil kembali perak dari limbah pencucian film hitam putih. Wastewater of photography which contain very hight concentration dithiosulphatoargentat complex ion, Ag(S203)23-, could be dangerous for health became of toxicity of silver. The aim of this research is to determine the efficiency of silver recovery from washing waste of black-white film by precipitated it using electrolysis method. The result of this research showed that efectively time for waste water of photograpy electrolysis is 40 minutes, with efficiency of electrolysis is 83.36%, and silver purity is 91.65%. It can be concluded that electrolysis methods, by seeing silver purity is effective to recovery silver from washing waste of black-white film. iv This document is Undip Institutional Repository Collection. The author(s) or copyright owner(s) agree that UNDIP-IR may, without changing the content, translate t submission to any medium or format for the purpose of preservation. The author(s) or copyright owner(s) also agree that UNDIP-IR may keep more than one copy of t submission for purposes of security, back-up and preservation. f http://eprints.undip.ac.idl