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Enhancing the recovery and concentration of polyphenols from camu-camu ( Myrciaria dubia H.B.K. McVaugh) by aqueous two-phase flotation and scale-up process

2018; Taylor & Francis; Volume: 53; Issue: 13 Linguagem: Inglês

10.1080/01496395.2018.1442865

ISSN

1520-5754

Autores

Carlos Eduardo de Araújo Padilha, Paulo Victor Fortunato Dantas, Cleitiane da Costa Nogueira, Ana Laura de Sá Leitão, Hanna Nóbrega Almeida, Domingos Fabiano de Santana Souza, Jackson Araújo de Oliveira, Gorete Ribeiro de Macêdo, Everaldo Silvino dos Santos,

Tópico(s)

Minerals Flotation and Separation Techniques

Resumo

In this study, polyphenols obtained from camu-camu pulp residue were recovered and concentrated from aqueous two-phase flotation (ATPF) by evaluating different operating conditions, such as solvent type, pH, ammonium sulfate concentration, flotation time, air flow, and volumetric ratio. Under optimal conditions, the polyethylene glycol 400/ammonium sulfate ATPF system showed an efficiency of 81.02% and a concentration coefficient two times higher than traditional aqueous two-phase extraction. Experiments were also carried out on a semi-pilot scale, using an apparatus with a 2.5-L working volume. The results showed that the semi-pilot system was comparable to the smaller scale system.

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