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BIBTEX RIS

Eletrólise de resíduos poluidores: I - Efluente de uma indústria liofilizadora de condimentos

1998; Brazilian Chemical Society; Volume: 21; Issue: 1 Linguagem: Inglês

10.1590/s0100-40421998000100004

ISSN

1678-7064

Autores

Dejanira F. de Angelis, Carlos Renato Corso, Edério Dino Bidóia, Peterson Bueno de Moraes, Roberto Naves Domingos, Romeu C. Rocha‐Filho,

Tópico(s)

Dye analysis and toxicity

Resumo

A SEASONING FREEZE-DRYING INDUSTRY.Wastewater from a seasoning freeze-drying industry was electrolysed to increase its biodegradability.Stainless-steel electrodes were used at 9.09 A/m 2 , for up to 80 min.Conductivity, pH, biochemical (BOD) and chemical (COD) oxygen demands, Daphnia similis acute toxicity bioassays, and bacteria counting through the plate count agar method were determined after different times of electrolysis.The results (e.g. higher BOD and lower COD) showed that the biodegradability of the wastewater was significantly increased; furthermore, Fe 2+ ions liberated by the electrodes cause microorganisms to die and, when oxidised to Fe 3+ , contribute for the flocculation and sedimentation of solid residues.

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