Influence from the type of waste collection (mixed or segregated) on recycling post-consumer polyolefins films
| Autor: | Sandro Donnini Mancini, Alex Rodrigues Nogueira, Dennis Akira Kagohara, Tânia de Mattos, Jonas Age Saide Schwartzman, André Henrique Rosa |
|---|---|
| Přispěvatelé: | Universidade Estadual Paulista (Unesp) |
| Rok vydání: | 2008 |
| Předmět: |
polyethylene
Materials science Sedimentation (water treatment) tratamento de efluentes industriais Mineralogy chemistry.chemical_compound Chemical Engineering (miscellaneous) Recycling Turbidity Effluent Polypropylene Organic Chemistry Reciclagem polipropileno Dilution coleta seletiva Low-density polyethylene Wastewater chemistry filmes plásticos polietileno curbside collection High-density polyethylene industrial wastewater treatment plastic films polypropylene Nuclear chemistry |
| Zdroj: | SciELO Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP Polímeros v.18 n.4 2008 Polímeros (São Carlos. Online) Associação Brasileira de Polímeros (ABPol) instacron:ABPO |
| ISSN: | 0104-1428 |
| DOI: | 10.1590/s0104-14282008000400006 |
| Popis: | Submitted by Guilherme Lemeszenski (guilherme@nead.unesp.br) on 2013-08-22T19:01:48Z No. of bitstreams: 1 S0104-14282008000400006.pdf: 124141 bytes, checksum: 2c38712da8c151d86c681b1d6fc26cc9 (MD5) Made available in DSpace on 2013-08-22T19:01:48Z (GMT). No. of bitstreams: 1 S0104-14282008000400006.pdf: 124141 bytes, checksum: 2c38712da8c151d86c681b1d6fc26cc9 (MD5) Previous issue date: 2008-01-01 Made available in DSpace on 2013-09-30T20:02:10Z (GMT). No. of bitstreams: 2 S0104-14282008000400006.pdf: 124141 bytes, checksum: 2c38712da8c151d86c681b1d6fc26cc9 (MD5) S0104-14282008000400006.pdf.txt: 41355 bytes, checksum: 8acce1c56d046ca4c90eb0fb9691762e (MD5) Previous issue date: 2008-01-01 Submitted by Vitor Silverio Rodrigues (vitorsrodrigues@reitoria.unesp.br) on 2014-05-20T15:15:56Z No. of bitstreams: 2 S0104-14282008000400006.pdf: 124141 bytes, checksum: 2c38712da8c151d86c681b1d6fc26cc9 (MD5) S0104-14282008000400006.pdf.txt: 41355 bytes, checksum: 8acce1c56d046ca4c90eb0fb9691762e (MD5) Made available in DSpace on 2014-05-20T15:15:56Z (GMT). No. of bitstreams: 2 S0104-14282008000400006.pdf: 124141 bytes, checksum: 2c38712da8c151d86c681b1d6fc26cc9 (MD5) S0104-14282008000400006.pdf.txt: 41355 bytes, checksum: 8acce1c56d046ca4c90eb0fb9691762e (MD5) Previous issue date: 2008-01-01 Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Filmes de polipropileno (PP) e de polietilenos de alta (HDPE) e baixa densidades (LDPE) foram estudados avaliando-se a presença de impurezas e o efluente da lavagem de seus resíduos provenientes tanto de coleta comum (resíduos misturados) quanto seletiva (resíduos separados). Os resultados apontam que os filmes estavam impregnados com, no mínimo, 30% de impurezas quando provenientes de coleta comum e com, no máximo, 10% quando de coleta seletiva. Esses resultados, associados aos da turbidez do efluente de lavagem, indicam que dos filmes de coleta seletiva, preferidos pelos recicladores, se obtém pelo menos 20% mais material e tem-se uma lavagem mais fácil, por envolver praticamente só a retirada de sólidos, ao contrário da coleta comum, associada a resíduos úmidos impregnados. Os efluentes foram também avaliados segundo sólidos totais, sólidos sedimentáveis e o teor de nove metais. Os resultados indicaram que os dois tipos de coleta geram efluentes semelhantes e que no máximo duas etapas devem ser suficientes para seus tratamentos: decantação e diluição do efluente no corpo d'água receptor. Polypropylene (PP), high density polyethylene (HDPE) and low density polyethylene (LDPE) films were studied according to the way their wastes are collected (segregated from or mixed with other residues) by evaluating the amount of impurities and the washing wastewater. It was found that the films from mixed collection presented at minimum 30% of impurities, while the films from segregated (or curbside) collection presented at maximum 10% of impurities. The amount of impurities and the wastewater turbidity indicated that 20% more material can be obtained from the films of segregated colletion, preferred by recyclers, in addition to having a simpler washing process because it only involves solids removal, unlike mixed collection which is associated with the impregnation of wet wastes. The effluents were also evaluated according to the total amount of solids, sediments and concentration of nine metals. The results showed that both types of collection generated similar wastewaters and their treatment requires two steps at the most: sedimentation and effluent dilution in the water body. UNESP Engenharia Ambiental UNESP Engenharia Ambiental |
| Databáze: | OpenAIRE |
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