BRPI0700021A - método de fabricação de esferas adsorventes de alumina ativada via processo sol-gel apropriadas para a adsorção e captura de metais pesados presentes em baixas concentrações em grandes volumes de efluentes lìquidos industriais - Google Patents
método de fabricação de esferas adsorventes de alumina ativada via processo sol-gel apropriadas para a adsorção e captura de metais pesados presentes em baixas concentrações em grandes volumes de efluentes lìquidos industriaisInfo
- Publication number
- BRPI0700021A BRPI0700021A BRPI0700021A BRPI0700021A BR PI0700021 A BRPI0700021 A BR PI0700021A BR PI0700021 A BRPI0700021 A BR PI0700021A BR PI0700021 A BRPI0700021 A BR PI0700021A
- Authority
- BR
- Brazil
- Prior art keywords
- activated alumina
- heavy metals
- sol
- large volumes
- low concentrations
- Prior art date
Links
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title abstract 4
- 229910001385 heavy metal Inorganic materials 0.000 title abstract 3
- 238000004519 manufacturing process Methods 0.000 title abstract 3
- 239000003463 adsorbent Substances 0.000 title abstract 2
- 239000007788 liquid Substances 0.000 title 1
- 238000001179 sorption measurement Methods 0.000 title 1
- 229910052725 zinc Inorganic materials 0.000 abstract 3
- 239000004372 Polyvinyl alcohol Substances 0.000 abstract 2
- 229910052793 cadmium Inorganic materials 0.000 abstract 2
- 229910052802 copper Inorganic materials 0.000 abstract 2
- 239000002105 nanoparticle Substances 0.000 abstract 2
- 229920002451 polyvinyl alcohol Polymers 0.000 abstract 2
- 238000003980 solgel method Methods 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 230000002378 acidificating effect Effects 0.000 abstract 1
- 229910052782 aluminium Inorganic materials 0.000 abstract 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 1
- 239000012736 aqueous medium Substances 0.000 abstract 1
- 230000001066 destructive effect Effects 0.000 abstract 1
- 239000003292 glue Substances 0.000 abstract 1
- 230000003100 immobilizing effect Effects 0.000 abstract 1
- 239000003295 industrial effluent Substances 0.000 abstract 1
- 239000010808 liquid waste Substances 0.000 abstract 1
- 239000002609 medium Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000011859 microparticle Substances 0.000 abstract 1
- 230000007935 neutral effect Effects 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 230000008961 swelling Effects 0.000 abstract 1
- 230000009466 transformation Effects 0.000 abstract 1
Landscapes
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
MéTODO DE FABRICAçãO DE ESFERAS ABSORVENTES DE ALUMINA ATIVADA VIA PROCESSO SOL-GEL APROPRIADAS PARA A ADSORçãO E CAPTURA DE METAIS PESADOS PRESENTES EM BAIXAS CONCENTRAçõES EM GRANDES VOLUMES DE EFLUENTES LìQUIDOS INDUSTRIAIS. A presente invenção diz respeito a um método de fabricação de esferas adsorventes de alumina ativada, o qual se baseia no conhecido Processo Sol-Gel para imobilizar micropartículas (<243>38 <109>m) de alumina ativada, preferencialmente a fase <sym>-A1~ 2~O~ 3~, no formato esférico e colá-las com moléculas de álcool polivinílico (PVA) e com nanopartículas de bohemita (<244>-A1~ 2~O~ 3~.H~ 2~O), nanopartículas estas obtidas com auxílio de uma reação de transformação sol-gel à temperatura ambiente, em meio gasoso contendo NH~ 3~ e em um meio aquoso contendo NH~ 4~OH. As esferas de alumina ativada são obtidas com elevada esfericidade, resistência mecânica superior a 2 Kg/esfera, distribuição estreita de diâmetro, com diâmetro médio entre 1 mm e 5 mm, com boa estabilidade química em meios ácidos, básicos e neutros e com boa capacidade de absorver água sem levar a um inchamento destrutivo. Estas esferas são apropriadas para o tratamento alternativo de grandes volumes de rejeitos líquidos industriais contendo baixas concentrações de metais pesados, particularmente de Cd, Cu e Zn, já que elas podem ser obtidas industrialmente a baixo custo e com uma eficiência de remoção da ordem de 27%, 18%, 45% e 25% para Cd+Cu+Zn, Cd, Cu e Zn, respectivamente.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BRPI0700021A BRPI0700021B1 (pt) | 2007-01-10 | 2007-01-10 | método de fabricação de esferas adsorventes de alumina ativada via processo sol-gel apropriadas para a adsorção e captura de metais pesados presentes em baixas concentrações em grandes volumes de efluentes líquidos industriais |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BRPI0700021A BRPI0700021B1 (pt) | 2007-01-10 | 2007-01-10 | método de fabricação de esferas adsorventes de alumina ativada via processo sol-gel apropriadas para a adsorção e captura de metais pesados presentes em baixas concentrações em grandes volumes de efluentes líquidos industriais |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| BRPI0700021A true BRPI0700021A (pt) | 2008-08-26 |
| BRPI0700021B1 BRPI0700021B1 (pt) | 2016-05-24 |
Family
ID=39708187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BRPI0700021A BRPI0700021B1 (pt) | 2007-01-10 | 2007-01-10 | método de fabricação de esferas adsorventes de alumina ativada via processo sol-gel apropriadas para a adsorção e captura de metais pesados presentes em baixas concentrações em grandes volumes de efluentes líquidos industriais |
Country Status (1)
| Country | Link |
|---|---|
| BR (1) | BRPI0700021B1 (pt) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113019310B (zh) * | 2021-03-30 | 2024-03-29 | 中国建筑设计研究院有限公司 | 一种活性氧化铝包裹建筑垃圾核心骨料的氧化铝球及制备方法 |
-
2007
- 2007-01-10 BR BRPI0700021A patent/BRPI0700021B1/pt active IP Right Grant
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113019310B (zh) * | 2021-03-30 | 2024-03-29 | 中国建筑设计研究院有限公司 | 一种活性氧化铝包裹建筑垃圾核心骨料的氧化铝球及制备方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| BRPI0700021B1 (pt) | 2016-05-24 |
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| B09A | Decision: intention to grant | ||
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