Recovery and Reuse of Color Developing Agents

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Publisher: SMPTE
Doc Type: Journal Article
Article Type: research-article
Abstract: Recovery and reuse of color developer overflows is commonly done by one of three methods: (1) reconstitution, (2) ion exchange, and (3) electrodialysis. An alternative to reusing all or part of the overflow by application of one of these methods is to recover and reuse only the color developing agent. This paper describes three methods to reclaim the color developing agent: (1) precipitation, (2) extraction, and (3) dialysis. The precipitation method is based on salting out. The extraction procedure involves two alternatives: liquid-liquid and liquid-solid. Dialysis is not discussed at length in this paper. Of these methods, one of the most promising is liquid-solid extraction. The recovery and reuse of Kodak color developing agent CD-2 from the Eastman color print developer by liquid-solid extraction is described. Only laboratory (small-scale) tests have been made so far of any of these reclamation methods. A brief discussion of costs is made.
Publication Date: 1980-04-01
DOI: 10.5594/J00500
Link: https://doi.org/10.5594/J00500
Author(s): Charleton C. Bard

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Charleton C. Bard; Recovery and Reuse of Color Developing Agents, SMPTE Journal ( Volume: 89, Issue: 4, April 1980); SMPTE, 1980. Available at https://doi.org/10.5594/J00500

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Charleton C. Bard; Recovery and Reuse of Color Developing Agents, SMPTE Journal ( Volume: 89, Issue: 4, April 1980); SMPTE, 1980. Available at https://doi.org/10.5594/J00500

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Charleton C. Bard; Recovery and Reuse of Color Developing Agents, SMPTE Journal ( Volume: 89, Issue: 4, April 1980); SMPTE, 1980. Available at https://doi.org/10.5594/J00500

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<span class="citation">Charleton C. Bard; <cite>Recovery and Reuse of Color Developing Agents</cite>, SMPTE Journal ( Volume: 89, Issue: 4, April 1980); SMPTE, 1980. Available at <a href="https://doi.org/10.5594/J00500" target="_blank" rel="noopener">https://doi.org/10.5594/J00500</a></span>

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Charleton C. Bard; Recovery and Reuse of Color Developing Agents, SMPTE Journal ( Volume: 89, Issue: 4, April 1980); SMPTE, 1980
doi: 10.5594/J00500
url: https://doi.org/10.5594/J00500

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<li>
Charleton C. Bard; <cite id="bib-10-5594-j00500">Recovery and Reuse of Color Developing Agents</cite>, SMPTE Journal ( Volume: 89, Issue: 4, April 1980); SMPTE, 1980
<span class="doi">10.5594/J00500</span>
</li>