Surfactant-assisted two phase partitioning bioreactors for laccase-catalyzed degradation of anthracene

In this study, the removal of bisphenol A (BPA) by laccase in a continuous enzymatic membrane reactor (EMR) was investigated. The effects of key parameters, namely, type of laccase, pH, and enzyme activity, were initially evaluated. Once optimal conditions were determined, the continuous removal of the pollutant in an EMR was assessed in synthetic and real biologically treated wastewaters. The reactor configuration consisted of a stirred tank reactor coupled to a ceramic membrane, which prevented the sorption of the pollutant and allowed the recovery and recycling of laccase. Nearly complete removal of BPA was attained under both operation regimes with removal yields above 94.5 %. In experiments with real wastewater, the removal of BPA remained high while the presence of colloids and certain ions and the formation of precipitates on the membrane potentially affected enzyme stability and made necessary the periodic addition of laccase. Polymerization and degradation were observed as probable mechanisms of BPA transformation by laccase.

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“…Laccase activity was determined by a colorimetric assay using ABTS as substrate as described elsewhere (Arca-Ramos et al 2012).…”

Section: Determination Of Enzyme Activity and Bpa Concentrationmentioning

confidence: 99%

Potentiality of a ceramic membrane reactor for the laccase-catalyzed removal of bisphenol A from secondary effluents

Arca-Ramos

Eibes

Feijoo

et al. 2015

Appl Microbiol Biotechnol

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“…1,2 Two-phase systems increase the solubility of hydrophobic substrates and products and thus allow a possible shi of the reaction equilibrium. 3 Moreover, two-phase systems can reduce the difficulty of product separation because the catalyst and products are present in distinct liquid phases. 4 For these reasons, the development of enzymatic catalysis in two-phase systems is of great interest for ne chemical and pharmaceutical processes.…”

Section: Introductionmentioning

confidence: 99%

Phospholipase D encapsulated into metal-surfactant nanocapsules for enhancing biocatalysis in a two-phase system

Pang

Wang

et al. 2019

RSC Adv.

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“…Karimi et al 10 designed a labscale bioreactor for treatment of waste gas containing benzene, toluene and xylene (BTX). Ramos et al 11 proposed a two phase partitioning bioreactor to carry out the degradation of the poorly soluble compound anthracene by laccase from Trametes versicolor. The organic phase consisted of silicone oil saturated with anthracene.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Crude Oil Biodegradation in a Two-liquid Phase Partitioning Bioreactor

Ismail

Abdulrazzak

2015

Chem. Biochem. Eng. Q.

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Surfactant-assisted two phase partitioning bioreactors for laccase-catalyzed degradation of anthracene

Cited by 28 publications

References 34 publications

Potentiality of a ceramic membrane reactor for the laccase-catalyzed removal of bisphenol A from secondary effluents

Potentiality of a ceramic membrane reactor for the laccase-catalyzed removal of bisphenol A from secondary effluents

Phospholipase D encapsulated into metal-surfactant nanocapsules for enhancing biocatalysis in a two-phase system

Enhanced Crude Oil Biodegradation in a Two-liquid Phase Partitioning Bioreactor

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