Anaerobic biotransformation of nitroanilines enhanced by the presence of low am...

Three microporous activated carbons -original (AC0), chemical oxidized with HNO3 (ACHNO3) and thermal treated (ACH2)-, and three mesoporous carbons - xerogels (CXA and CXB) and nanotubes (CNT)-, were tested on the biological reduction of o-, m- and p-nitroaniline (NoA) at a concentration above the half maximal inhibitory concentration (IC50) for a methanogenic consortium degrading a mixture of volatile fatty ac...

Carbon-coated metallic magnetic nanoparticles for application on biorremediation

Aromatic amines sources, environmental impact and remediation

Aromatic amines are widely used industrial chemicals as their major sources in the environment include several chemical industry sectors such as oil refining, synthetic polymers, dyes, adhesives, rubbers, perfume, pharmaceuticals, pesticides and explosives. They result also from diesel exhaust, combustion of wood chips and rubber and tobacco smoke. Some types of aromatic amines are generated during cooking, spe...

Carbon materials as new generation of new electron shuttles for the anaerobic d...

Tese de Doutoramento em Engenharia Química e Biológica; Residual dyes originated by textile, pharmaceutical, food, chemical and paper industries, are considered xenobiotic compounds and are difficult to remove from the environment, adversely effecting ecosystems. Effluents generated by the textile sector are especially harmful, due to the high quantities of water and chemicals used, in special dyes. The most co...

Effect of different carbon materials as electron shuttles in the anaerobic biot...

Aromatic amines resulted from azo dyes biotransformation under anaerobic conditions are generally recalcitrant to further anaerobic degradation. The catalytic effect of carbon materials (CM) on the reduction of azo dyes is known and has been confirmed in this work by increasing 3-fold the biological reduction rate of Mordant Yellow 1 (MY1). The resulting m-nitroaniline (m-NoA) was further degraded to m-phenylen...

Perspectives on carbon materials as powerful catalysts in continuous anaerobic ...

Supplementary data related to this article can be found at http:// dx.doi.org/10.1016/j.watres.2016.06.004.; The catalytic effect of commercial microporous activated carbon (AC) and macroporous carbon nanotubes (CNT) is investigated in reductive bioreactions in continuous high rate anaerobic reactors, using the azo dye Acid Orange 10 (AO10) as model compound as electron acceptor and a mixture of VFA as electron...

Synthesis, characterization and application of magnetic carbon materials as ele...

Supplementary data associated with this article can be found,in the online version, at http://dx.doi.org/10.1016/j.apcatb.2017.04.060.; A set of core(ferrite, FeO)-shell(carbon, C) composites, C@FeO, C@MnFeO, C@CoFeO, and carbon nanotubes (CNT) impregnated with 2% of Fe (CNT@2%Fe) were prepared. The different composites were tested as redox mediators (RM) in the biological reduction of the azo dye Acid Orange 1...