Pengolahan Perak Metalik pada Limbah Film Radiografi dengan Menggunakan Natrium Hidroksida

Abstract

Background: The background of this research was utilization of radiological film waste in the hospital is very less, whereas in the waste film there is silver worth selling in the market, has been done research ont he processing of waste radiology film into metallic silver by using strong base chemicals (NaOH). The purpose of this research is to know how to convert radiology film waste into metallic silver using strong base chemicals (NaOH) which are worth selling in the market.

Methods : This type of research is quantitative with an experimental approach. Data collection and experimental processes were carried out during March 2017 at Radiology Laboratory of Baiturrahmah Padang University.This research was conducted by experimenting by collecting tools and materials from various sources and processing waste radiology film into metallic silver.

Results: The filtration of the radiology film waste into metallic silver using NaOH resulted in the following results, in 100 sheets of radiological waste film measuring 24 x 30 obtained pure silver as much as 5,44 grams, 100 sheets of radiological film waste measuring 35 x 35 pure silver as much as 6,09 grams and 100 sheets of radiological film waste measuring 30 x 40 obtained pure silver as much as 7,83 grams.

Conclusions: From this research, is done by several stages, collecting phase, deposition stage, and purification stage. The first way to process radiological film waste is that the researcher prepares tools and materials from various sources and after that the researcher decomposes it with Sodium Hydroxide, after decomposing it produces silver mud, after that the silver mud is dried by roasting and after the mud is dry then the silver mud is burned with a burner so that the silver melts and becomes silver that is ready to be marketed.