WASTE TREATMENT OF TWO ELECTROPLATING SOLUTIONS OF CU AND ZN BY MIXING AND PRECIPITATION

Autor:	Remigijus Juškėnas, Albinas Pigaga, Algis Selskis
Rok vydání:	2002
Předmět:	Precipitation (chemistry) Process Chemistry and Technology General Chemical Engineering Inorganic chemistry chemistry.chemical_element Filtration and Separation General Chemistry Zinc Human decontamination Copper Waste treatment chemistry.chemical_compound Wastewater chemistry Reagent Ammonium
Zdroj:	Separation Science and Technology. 37:3155-3168
ISSN:	1520-5754 0149-6395
DOI:	10.1081/ss-120005666
Popis:	Our studies suggest a cheap and simple way to decontaminate two ligand-containing rinsing waters of metal finishing. Both copper diphosphate and acidic zinc ammonium containing rinsing wastewater may be decontaminated by mixing, which results in precipitation of solid solution of potassium, ammonium, copper, and zinc diphosphates. About 80–99.5% of environmentally hazardous substances, viz. zinc, copper, and diphosphate are removed from the solution. Chemical and phase composition of the precipitate was examined. We have also suggested several possible ways to utilize the precipitate. This way of decontamination requires no expensive reagents since only a small amount of H2SO4 is required for pH adjustment.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4e19460240012035db44c5f933dcd4cf https://doi.org/10.1081/ss-120005666 Zobrazit plný text záznamu