Tratamento biológico de efluentes de indústrias de papel após floculação e coagulação com sais de alumínio e polieletrólitos naturais
<abstract language="eng">The flocculation and sedimentation of recalcitrant organic compounds of high molecular weight using natural polyelectrolytes, extracted from the cactus Cereus peruvianus and Opuntia ficus indica, have been studied. Organic compounds of high molecular weight f...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Instituto de Tecnologia do Paraná (Tecpar)
2000-01-01
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| Series: | Brazilian Archives of Biology and Technology |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132000000100016 |
| _version_ | 1818618786993930240 |
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| author | Edson M. dos Reis Jorge Nozaki |
| author_facet | Edson M. dos Reis Jorge Nozaki |
| author_sort | Edson M. dos Reis |
| collection | DOAJ |
| description | <abstract language="eng">The flocculation and sedimentation of recalcitrant organic compounds of high molecular weight using natural polyelectrolytes, extracted from the cactus Cereus peruvianus and Opuntia ficus indica, have been studied. Organic compounds of high molecular weight from effluents of paper and pulp industries are difficult for biological degradation. However, using a mixture of aluminum salts and natural polyelectrolytes, the aggregation and settling properties of recalcitrant organics were increased if compared with conventional methods of wastewater treatment using only aluminum or iron sulfate. After flocculation, sedimentation, and filtration, the effluent was submitted to biological degradation by activated sludge process. The main advantages of using a mixture of aluminum salts and natural polyelectrolytes were shorter time of flocculation, floccus of larger size and easier for filtration.The removal efficiency observed were:85-90% of aromatic compounds, 70-85% of chemical oxygen demand,and 91-97% of colour. |
| first_indexed | 2024-12-16T17:27:08Z |
| format | Article |
| id | doaj.art-7bf283230699434ba8af17276029c9b9 |
| institution | Directory Open Access Journal |
| issn | 1516-8913 1678-4324 |
| language | English |
| last_indexed | 2024-12-16T17:27:08Z |
| publishDate | 2000-01-01 |
| publisher | Instituto de Tecnologia do Paraná (Tecpar) |
| record_format | Article |
| series | Brazilian Archives of Biology and Technology |
| spelling | doaj.art-7bf283230699434ba8af17276029c9b92022-12-21T22:23:01ZengInstituto de Tecnologia do Paraná (Tecpar)Brazilian Archives of Biology and Technology1516-89131678-43242000-01-01431010.1590/S1516-89132000000100016Tratamento biológico de efluentes de indústrias de papel após floculação e coagulação com sais de alumínio e polieletrólitos naturaisEdson M. dos ReisJorge Nozaki<abstract language="eng">The flocculation and sedimentation of recalcitrant organic compounds of high molecular weight using natural polyelectrolytes, extracted from the cactus Cereus peruvianus and Opuntia ficus indica, have been studied. Organic compounds of high molecular weight from effluents of paper and pulp industries are difficult for biological degradation. However, using a mixture of aluminum salts and natural polyelectrolytes, the aggregation and settling properties of recalcitrant organics were increased if compared with conventional methods of wastewater treatment using only aluminum or iron sulfate. After flocculation, sedimentation, and filtration, the effluent was submitted to biological degradation by activated sludge process. The main advantages of using a mixture of aluminum salts and natural polyelectrolytes were shorter time of flocculation, floccus of larger size and easier for filtration.The removal efficiency observed were:85-90% of aromatic compounds, 70-85% of chemical oxygen demand,and 91-97% of colour.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132000000100016flocculationnatural polyelectrolytesbiological degradationactivated sludge processpaper and pulp effluents |
| spellingShingle | Edson M. dos Reis Jorge Nozaki Tratamento biológico de efluentes de indústrias de papel após floculação e coagulação com sais de alumínio e polieletrólitos naturais Brazilian Archives of Biology and Technology flocculation natural polyelectrolytes biological degradation activated sludge process paper and pulp effluents |
| title | Tratamento biológico de efluentes de indústrias de papel após floculação e coagulação com sais de alumínio e polieletrólitos naturais |
| title_full | Tratamento biológico de efluentes de indústrias de papel após floculação e coagulação com sais de alumínio e polieletrólitos naturais |
| title_fullStr | Tratamento biológico de efluentes de indústrias de papel após floculação e coagulação com sais de alumínio e polieletrólitos naturais |
| title_full_unstemmed | Tratamento biológico de efluentes de indústrias de papel após floculação e coagulação com sais de alumínio e polieletrólitos naturais |
| title_short | Tratamento biológico de efluentes de indústrias de papel após floculação e coagulação com sais de alumínio e polieletrólitos naturais |
| title_sort | tratamento biologico de efluentes de industrias de papel apos floculacao e coagulacao com sais de aluminio e polieletrolitos naturais |
| topic | flocculation natural polyelectrolytes biological degradation activated sludge process paper and pulp effluents |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132000000100016 |
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