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  • X-ray films have two essential components
    Base- Polyester (polyethylene terephthalate resin) 0.2mm thick.
    Emulsion- Silver halide crystals suspended in gelatin. (0.007-0.02mm).
  • Radiology recycles all x-ray film and captures silver for recycling from their silver recovery units.
  • An industrial process for X-ray film-recycling was worked out by the IPR-company9 and introduced to the market under the name REPET on the basis of a triple motivation:
    availability of the waste chips on a repetitive basis
    suitable purity
    very competitive price.
  • When an X-ray film has been exposed, it must be processed in order to produce a permanent visible radiographic image that can be kept without deterioration for a number of years.
  • The waste X-ray/ photographic films contain 1.5 - 2 % (w/w) black metallic silver which is recovered and reused. Around 18-20% of the world's silver needs are supplied by recycling photographic waste.
  • Experiments included investigations concerning optimal parameters of leaching process for treatment of exposed X-ray films, such as temperature, time, acid concentration and solid/liquid ratio. Investigations on valorisation of silver from exposed X-ray films started with onset with photo techniques.
  • X-ray film processing in medical applications represents a significant opportunity for new technologies to reduce or eliminate water use. One of those technologies is the application of water recycling to the process equipment.
  • X-ray film processors are used throughout the medical industry by doctors, hospitals, imaging centers, health and medical clinics, chiropractors and veterinarians.

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