BR0003424A - Electrochemical processes for the treatment of aqueous effluents containing heavy metals - Google Patents
Electrochemical processes for the treatment of aqueous effluents containing heavy metalsInfo
- Publication number
- BR0003424A BR0003424A BR0003424A BR0003424A BR0003424A BR 0003424 A BR0003424 A BR 0003424A BR 0003424 A BR0003424 A BR 0003424A BR 0003424 A BR0003424 A BR 0003424A BR 0003424 A BR0003424 A BR 0003424A
- Authority
- BR
- Brazil
- Prior art keywords
- treatment
- effluents containing
- heavy metals
- containing heavy
- metal
- Prior art date
Links
Landscapes
- Removal Of Specific Substances (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
"PROCESSOS ELETROQUìMICOS PARA O TRATAMENTO DE EFLUENTES AQUOSOS CONTENDO METAIS PESADOS". Este processo refere-se a um método eletroquímico utilizado no tratamento e/ou despoluição de efluentes aquosos contendo metais pesados advindos das indústrias de tratamentos de superfície, de explosivos, metal-mecânica, de fertilizantes, da produção de jóias e semijóias e outras, através do uso de células eletrolíticas utilizando catodos tridimensionais (esponjas de carbono vítreo reticulado, esponjas metálicas, etc.). O processo promove a remoção catódica de íons de metais pesados presentes no efluente. A eficiência do processo foi verificada tratando-se efluentes contendo alguns íons de metais pesados, como cobre, chumbo e zinco em diferentes meios. Nos ensaios realizados os teores metálicos foram reduzidos de aproximadamente 50 mg.L^ -1^ para 0,1 mg.L^ -1^ em 30 minutos, equivalendo a uma taxa de remoção em torno de 99,9%."ELECTROCHEMICAL PROCESSES FOR THE TREATMENT OF WATER EFFLUENTS CONTAINING HEAVY METALS". This process refers to an electrochemical method used in the treatment and / or depollution of aqueous effluents containing heavy metals from the surface treatment, explosives, metal-mechanics, fertilizer, jewelry and semi-jewelery and other industries, through the use of electrolytic cells using three-dimensional cathodes (cross-linked vitreous carbon sponges, metal sponges, etc.). The process promotes the cathodic removal of heavy metal ions present in the effluent. The efficiency of the process was verified by treating effluents containing some heavy metal ions, such as copper, lead and zinc in different media. In the tests performed, the metal contents were reduced from approximately 50 mg.L ^ -1 ^ to 0.1 mg.L ^ -1 ^ in 30 minutes, equivalent to a removal rate of around 99.9%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BR0003424A BR0003424B1 (en) | 2000-07-27 | 2000-07-27 | electrochemical processes for the treatment of aqueous effluents containing heavy metals. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BR0003424A BR0003424B1 (en) | 2000-07-27 | 2000-07-27 | electrochemical processes for the treatment of aqueous effluents containing heavy metals. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| BR0003424A true BR0003424A (en) | 2002-02-26 |
| BR0003424B1 BR0003424B1 (en) | 2009-01-13 |
Family
ID=3944871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BR0003424A BR0003424B1 (en) | 2000-07-27 | 2000-07-27 | electrochemical processes for the treatment of aqueous effluents containing heavy metals. |
Country Status (1)
| Country | Link |
|---|---|
| BR (1) | BR0003424B1 (en) |
-
2000
- 2000-07-27 BR BR0003424A patent/BR0003424B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| BR0003424B1 (en) | 2009-01-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| B07A | Technical examination (opinion): publication of technical examination (opinion) | ||
| B15V | Prolongation of time limit allowed |
Free format text: DEVOLUCAO DE PRAZO CONCEDIDA - RECONHECIDO O OBSTACULO ADMINISTRATIVO E DEVOLVIDO O PRAZO DE 24 DIAS, NOS TERMOS DO ARTIGO 221 PARAGRAFO 2O DA LPI E DA RESOLUCAO 116/04. |
|
| B09A | Decision: intention to grant | ||
| B16A | Patent or certificate of addition of invention granted |
Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 27/07/2000, OBSERVADAS AS CONDICOES LEGAIS. |
|
| B21A | Expiry acc. art. 78, item i of ipl- expiry of the term of protection |
Free format text: PATENTE EXTINTA EM 27.07.2020 |