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Selective denitrification of simulated oily wastewater by oxidation using Janus...
Roman, Fernanda; Díaz de Tuesta, Jose Luis; Sanches, Flávia Kim; Silva, Adriano S.; Marin, Pricila; Machado, Bruno F.; Serp, Philippe; Pedrosa, MartaThe intense industrial development has resulted in several consequences for human and environmental health, including the increased discharge of oily products in water bodies. Oily products are widely used in industry, often bearing an associated high cost. Finding alternatives to treat oily wastewater aiming at recovering oily and water phases is an approach allowing recovery of products of economic interest. ...
Selective denitrification of a simulated oily wastewater using Janus-structured...
Roman, Fernanda; Sanches, Flávia Kim; Silva, Adriano S.; Díaz de Tuesta, Jose Luis; Marin, Pricila; Machado, Bruno; Serp, Philippe; Silva, AdriánCarbon nanotubes (CNTs) bearing a Janus-like structure were synthesized by chemical vapor deposition considering ethylene and acetonitrile as carbon and nitrogen sources. The developed materials were applied as catalyst in the oxidation of 4-nitrophenol (4-NP) dissolved in a biphasic medium (water/2,2,4-trimeylpentane) simulating a contaminated oily wastewater. The CNT prepared using both ethylene and acetonitr...
Selective oxidation of 4-nitrophenol with H2O2 in a biphasic system by janus-li...
Sanches, Flávia Kim; Roman, Fernanda; Silva, Adriano S.; Díaz de Tuesta, Jose Luis; Silva, Adrián; Faria, Joaquim; Machado, Bruno; Serp, PhilippeThe use of petroleum-based products has increased drastically with the increase in population, resulting in the deposition of oily products in aquatic systems. It is estimated that for each ton of petroleum that undergoes refinement processes, between 0.5 and 1 ton of oily wastewaters are generated, bearing an oil concentration that may reach 40 g L-1 [1,2]. Hazardous pollutants dissolved both in oily and aqueo...
Selective denitrification by peroxidation of 4-nitrophenol using Janus-structur...
Sanches, Flávia KimIndustrial pollution has grown a lot in recent times, mostly formed by oily compounds, affecting not only the environmental but also human health. As the concern increases, so does the search for effective treatment, a few years the use of different nanostructure porous carbon materials are being used in catalysis. Therefore, in this work carbon nanotubes (CNTs) were tested as catalysts in the selective denitri...
Amphiphilic carbon nanotubes for catalytic wet peroxide oxidation of 4-nitrophenol
Roman, Fernanda; Sanches, Flávia Kim; Díaz de Tuesta, Jose Luis; Marin, Pricila; Machado, Bruno; Serp, Philippe; Silva, Adrián; Faria, JoaquimCarbon nanotubes (CNTs) were synthesized via chemical vapor deposition (CVD) over an AlCoFeO4 catalyst by a sequential feed of ethylene (E, as carbon source) and acetonitrile (A, as nitrogen source). The resulting samples were noted E20 (hydrophobic), E10A10 (amphiphilic), and A20 (hydrophilic), the number referring to the feed time (minutes) of each precursor, as reported elsewhere1. These materials were teste...
Selective denitrification of lipophilic pollutants from oily wastewater by pero...
Sanches, Flávia Kim; Roman, Fernanda; Silva, Adriano S.; Díaz de Tuesta, Jose Luis; Marin, Pricila; Machado, Bruno; Serp, Philippe; Silva, AdriánCarbon nanotubes (CNTs) were tested as catalysts in the selective denitrification of 4-nitrophenol (4-NP) from oily wastewater by catalytic wet peroxide oxidation (CWPO). The CNTs were prepared by chemical vapor deposition, feeding sequentially ethylene (E) and/or acetonitrile (A) during different times until 20 min, resulting in samples E20, A20 and E10A10, the number denoting the time feeding of each precurso...