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Método de tratamiento para la recuperación de iones de zinc a partir de soluciones residuales

Resumen

Tipo:
Oferta Tecnológica
Referencia:
TORO20151105001
Publicado:
19/01/2016
Caducidad:
19/01/2017
Resumen:
Un equipo de investigación de una universidad rumana ha desarrollado y obtenido la patente de un método de tratamiento para la recuperación de iones de zinc a partir de soluciones residuales. Este método tiene la ventaja de establecer las condiciones óptimas de las soluciones de limpieza que contienen compuestos de residuos de zinc. El óxido de zinc obtenido se emplea para fabricar pigmentos, preparar sales de zinc o como catalizador en procesos químicos. El equipo de investigación busca socios industriales con el fin de establecer acuerdos de licencia y cooperación técnica.

Details

Tittle:
Method of recuperative treatment of the zinc ion from residual solutions
Summary:
A research team from a Romanian university has invented and patented a method of recuperative treatment of the zinc ions from residual solutions, method that has the advantage of establishing optimum conditions of cleaning solutions containing compounds of zinc waste. The research team is looking for industrial partners interested in license agreements and technical cooperation agreements.
Description:
A Romanian research team has invented a method for the zinc ion recovery purification of waste solutions. Industrial platforms today, particularly the electrical industry, the engineering industry, the naval industry, the branch of mining extraction, varnishes, paints, pulp and paper, plastics up to organic synthesis, require zinc compounds. Zinc and combinations, especially salts, oxides, carbonates, represent important raw material in the technologies referred to, matters for which is need the advanced recovery, as well as a return to the technological flow, temporary storage or other methods methods of enhancing efficiency of industrial processes.
The process, according to the invention, consists in that the zinc ion is extracted in a first step, in the form of oxalate of dihydrated zinc phosphate, in the following optimal reaction conditions: the molar concentration of zinc in the residual solution: molar concentration of zinc in solution of approximately 0.03, the solution pH (potential hydrogen) = 5, oxalic acid in excess of approximately 60% and the reaction temperature of 20°C; after that, through low thermal decomposition of the resulting zinc oxalate at a temperature of 340 ... 370°C, the zinc oxide will be obtained.
The zinc oxide thus obtained is used for manufacturing of pigments, zinc salt preparation or as a catalyst in chemical processes.
The foreign partner that the Romanian research team is looking for can be an industrial partner interested in license agreements and technical cooperation agreements,in order to improve the existing method.
Advantages and Innovations:
The technical problem solved by the invention relates to establish optimum purification of waste solutions containing zinc compound, in order to capitalize zinc, while solving ecological problems of the environment. Other advantages that can be mentioned are:
-high purity of the lead oxalate;
-superior decantation, filtration and washing speed of the precipitate as compared to the forms used within other methods;
-considerable reduced volume for the crystallized precipitate;
-crystalline and anhydrous form of the recovered product;
-chemical stability to atmospheric factors (humidity, heat, light, carbon dioxide).
Compared to other technologies, the presented method removes the following disadvantages of known solutions, which are linked to the amorphous state, the unevenness of compositional extracted forms, the large volume of precipitate even in optimum time settling, low speed filtration and washing of the precipitate instability chemistry to atmospheric agents with passage in soluble pollutant forms.
Stage of Development:
Field tested/evaluated
IPs:
Patents granted
CommeR Statunts Regarding IPR Status:
Patent granted by the State Office for Inventions and Trademarks. IP rights on national level - Romania.

Partner sought

Type and Role of Partner Sought:
The potential partners could be any SME active in the field of engineering industry, electrical industry, etc.
Concerning the technological cooperation agreement sought, would also like to find a foreign partner for the further technological development, by improving the existing method.

Client

Type and Size of Client:
University
Already Engaged in Trans-National Cooperation:
Si
Languages Spoken:
English

Keywords

Technology Keywords:
06006012 Bioprocesos
10002012 Limpieza de zonas contaminadas
06006009 Líquidos iónicos
10004001 Tratamiento de aguas industriales