Review of silver recovery techniques from radiographic effluent and X-ray film waste

Samson O. Masebinu, Edison Muzenda

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Citations (Scopus)

Abstract

This paper highlights the techniques for silver recovery from radiographic waste; effluent and X-ray films. The decline in silver natural resource has increased the cost of sourcing for pure silver. The ecological problems caused by the disposal of radiographic waste is a huge motivation for increased recovery, regeneration and recycling process. The negative impact of pure silver on human and the environment is low but its soluble salt and emission from its recovery process pose a great risk to the ecosystem. Pyro-metallurgical processes of silver recovery requires heat >950°C which also destroys the polymer substrate. Hydrometallurgical processes such as electrolysis, metallic replacement, chemical precipitation and adsorption, are often used and provides high purity and efficiency. A proposed research work for silver recovery based on chemical precipitation using oxalic acid has been presented.

Original languageEnglish
Title of host publicationWorld Congress on Engineering, WCE 2014
PublisherNewswood Limited
Pages613-617
Number of pages5
Volume2
ISBN (Electronic)9789881925374
ISBN (Print)9789881925350
Publication statusPublished - 2014
EventWorld Congress on Engineering and Computer Science 2014, WCECS 2014 - San Francisco, United States
Duration: Oct 22 2014Oct 24 2014

Other

OtherWorld Congress on Engineering and Computer Science 2014, WCECS 2014
CountryUnited States
CitySan Francisco
Period10/22/1410/24/14

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All Science Journal Classification (ASJC) codes

  • Computer Science (miscellaneous)

Cite this

Masebinu, S. O., & Muzenda, E. (2014). Review of silver recovery techniques from radiographic effluent and X-ray film waste. In World Congress on Engineering, WCE 2014 (Vol. 2, pp. 613-617). Newswood Limited.