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http://hdl.handle.net/123456789/872
Title: | Zinc recovery from artificial fibre prodn. acidic waste waters comprises two step pptn. with sodium hydroxide and then sodium carbonate soln. | Other Titles: | Procedeu de recuperare a zincului din ape reziduale | Authors: | Cruceru, Mihail Chircu, Seia Craiu, Cornel |
Keywords: | Zinc;Recovery;Residual water | Issue Date: | 30-Jan-1983 | Abstract: | Zn is recovered in 98% yield from residual waters of artificial fibre prodn. by first treating the acidic residue at 90-95 deg.C with a 30% NaOH soln. to pH 4-5., and then treating with a 10% Na2CO3 soln. to pH 8.5-9.5. The pptd. Zn concentrate is sepd. from the supernatant liq. by decantation or filtration, converted to ZnSO4 and crystallized. |
Description: | Patent Assignee Name(s) and Code(s): INST EPUR APEL REZI |
URI: | http://hdl.handle.net/123456789/872 |
Appears in Collections: | Patents |
Files in This Item:
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Documentatie~RO81184A.pdf | 22.98 kB | Adobe PDF | Request a copy | |
~RO81184A.pdf | 92.99 kB | Adobe PDF | Request a copy |
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