| Nome: | Descrição: | Tamanho: | Formato: | |
|---|---|---|---|---|
| 139.33 KB | Adobe PDF |
Orientador(es)
Resumo(s)
Three cultures were enriched from cork boiling wastewater using tannic acid as the selective carbon substrate, at 25 C and pH 7.2,
25 C and pH 4.7 and 50 C and pH 4.7. The enrichment culture obtained at neutral pH was composed of five culturable isolates,
whereas from each acidic enrichment two bacterial strains were isolated. Mesophilic isolates were Gram negative bacteria belonging
to the genera Klebsiella, Pseudomonas, Stenotrophomonas and Burkholderia. Thermophilic isolates were members of the genus Bacillus.
Despite the capability of the enrichment cultures to use tannic acid as single carbon and energy source, those cultures were unable to
reduce the total polyphenols or the total organic carbon content of cork boiling wastewater. In order to increase the bioavailability of the
organic carbon in cork boiling wastewater, biodegradation was preceded by Fenton oxidation. It was demonstrated that the combined
process, using small amounts of Fenton reagents and biodegradative inoculum added almost simultaneously to cork boiling wastewater,
leads to TOC reductions of more than 90%.
Descrição
Palavras-chave
Polyphenols Mesophiles Thermophiles Tannic acid biodegradation Fenton oxidation
Contexto Educativo
Citação
MACHADO, Manuela Dias ...[et al.] - Treatment of cork boiling wastewater using chemical oxidation and biodegradation. Chemosphere. ISSN 0045-6535. Vol. 64, n.º 3 (2006), p. 455-461
Editora
Elsevier