Publication
Selective denitrification of lipophilic pollutants from oily wastewater by peroxidation using Janus-structured amphiphilic carbon nanotubes as catalysts
| dc.contributor.author | Sanches, Flávia Kim | |
| dc.contributor.author | Roman, Fernanda | |
| dc.contributor.author | Silva, Adriano S. | |
| dc.contributor.author | Díaz de Tuesta, Jose Luis | |
| dc.contributor.author | Marin, Pricila | |
| dc.contributor.author | Machado, Bruno | |
| dc.contributor.author | Serp, Philippe | |
| dc.contributor.author | Silva, Adrián | |
| dc.contributor.author | Gomes, Helder | |
| dc.date.accessioned | 2023-02-09T15:51:36Z | |
| dc.date.available | 2023-02-09T15:51:36Z | |
| dc.date.issued | 2021 | |
| dc.description.abstract | Carbon 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 precursor and the order of appearance of the letter indicating the order of each precursor. The synthesized CNTs were tested in the CWPO of 4-NP in aqueous solutions and in simulated oily wastewater (2,2,4-trimethylpentane and water) at 80 ºC, initial pH 3.5, C4-NP = 1 g L-1, CH2O2 = 3.56 g/L and Ccatalyst = 2.5 g L-1. The catalyst A20 promoted a faster decomposition of H2O2 and a lower degradation of 4-NP in the aqueous system, whereas the catalyst E20 displayed the opposite trend, since E20 was able to remove 99% of the pollutant and A20 only 69% after 8 h of reaction. E10A10 in biphasic L-L media presented the highest conversion of 4-NP after 24 h in the oily phase (51%), followed by A20 (38%) and then E20 (25%). This tendency may be ascribed to the formation of Pickering emulsions by E10A10. The amphiphilic carachteristic of this material ensures a closer contact between the liquid phases, allowing higher mass transfer. | pt_PT |
| dc.description.sponsorship | This work was financially supported by project "PLASTIC_TO_FUEL&MAT – Upcycling Waste Plastics into Fuel and Carbon Nanomaterials" (PTDC/EQU-EQU/31439/2017), Base Funding - UIDB/50020/2020 of the Associate Laboratory LSRE-LCM - funded by national funds through FCT/MCTES (PIDDAC), and CIMO (UIDB/00690/2020) through FEDER under Program PT2020. Fernanda F. Roman acknowledges the national funding by FCT, Foundation for Science and Technology, and FSE, European Social Fund, through the individual research grant SFRH/BD/143224/2019. | pt_PT |
| dc.description.version | info:eu-repo/semantics/publishedVersion | pt_PT |
| dc.identifier.citation | Sanches, Flávia Kim; Roman, Fernanda; Silva, Adriano S.; Díaz de Tuesta, Jose Luis; Marin, Pricila; Machado, Bruno; Serp, Philippe; Silva, Adrián; Gomes, Helder (2021). Selective denitrification of lipophilic pollutants from oily wastewater by peroxidation using Janus-structured amphiphilic carbon nanotubes as catalysts. In 17th International Conference on Environmental Science and Technology. Athens: University of Aegean. p. 1-4 | pt_PT |
| dc.identifier.doi | 10.30955/gnc2021.00125 | pt_PT |
| dc.identifier.uri | http://hdl.handle.net/10198/26863 | |
| dc.language.iso | eng | pt_PT |
| dc.peerreviewed | yes | pt_PT |
| dc.publisher | University of Aegean | pt_PT |
| dc.relation | Upcycling Waste Plastics into Fuel and Carbon Nanomaterials | |
| dc.relation | Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials | |
| dc.relation | Mountain Research Center | |
| dc.relation | Amphiphilic carbon-based materials for one-pot desulfurization and denitrogenation of liquid fuels | |
| dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | pt_PT |
| dc.subject | Catalytic wet peroxide oxidation | pt_PT |
| dc.subject | 4-nitrophenol | pt_PT |
| dc.subject | Carbon nanotubes | pt_PT |
| dc.subject | Janus-structure | pt_PT |
| dc.subject | Pickering emulsion | pt_PT |
| dc.title | Selective denitrification of lipophilic pollutants from oily wastewater by peroxidation using Janus-structured amphiphilic carbon nanotubes as catalysts | pt_PT |
| dc.type | conference paper | |
| dspace.entity.type | Publication | |
| oaire.awardTitle | Upcycling Waste Plastics into Fuel and Carbon Nanomaterials | |
| oaire.awardTitle | Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials | |
| oaire.awardTitle | Mountain Research Center | |
| oaire.awardTitle | Amphiphilic carbon-based materials for one-pot desulfurization and denitrogenation of liquid fuels | |
| oaire.awardURI | info:eu-repo/grantAgreement/FCT/9471 - RIDTI/PTDC%2FEQU-EQU%2F31439%2F2017/PT | |
| oaire.awardURI | info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F50020%2F2020/PT | |
| oaire.awardURI | info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00690%2F2020/PT | |
| oaire.awardURI | info:eu-repo/grantAgreement/FCT/POR_NORTE/SFRH%2FBD%2F143224%2F2019/PT | |
| oaire.citation.conferencePlace | Athens | pt_PT |
| oaire.citation.endPage | 4 | pt_PT |
| oaire.citation.startPage | 1 | pt_PT |
| oaire.citation.title | 17th International Conference on Environmental Science and Technology | pt_PT |
| oaire.fundingStream | 9471 - RIDTI | |
| oaire.fundingStream | 6817 - DCRRNI ID | |
| oaire.fundingStream | 6817 - DCRRNI ID | |
| oaire.fundingStream | POR_NORTE | |
| person.familyName | Roman | |
| person.familyName | Silva | |
| person.familyName | Díaz de Tuesta | |
| person.familyName | Gomes | |
| person.givenName | Fernanda | |
| person.givenName | Adriano S. | |
| person.givenName | Jose Luis | |
| person.givenName | Helder | |
| person.identifier.ciencia-id | EE1B-DAA7-D0BD | |
| person.identifier.ciencia-id | 3E14-5049-B09D | |
| person.identifier.ciencia-id | 7A1F-022B-7DBF | |
| person.identifier.ciencia-id | 6218-1E19-13EE | |
| person.identifier.orcid | 0000-0001-5360-5298 | |
| person.identifier.orcid | 0000-0002-6795-2335 | |
| person.identifier.orcid | 0000-0003-2408-087X | |
| person.identifier.orcid | 0000-0001-6898-2408 | |
| person.identifier.rid | D-9785-2017 | |
| person.identifier.scopus-author-id | 55755821600 | |
| project.funder.identifier | http://doi.org/10.13039/501100001871 | |
| project.funder.identifier | http://doi.org/10.13039/501100001871 | |
| project.funder.identifier | http://doi.org/10.13039/501100001871 | |
| project.funder.identifier | http://doi.org/10.13039/501100001871 | |
| project.funder.name | Fundação para a Ciência e a Tecnologia | |
| project.funder.name | Fundação para a Ciência e a Tecnologia | |
| project.funder.name | Fundação para a Ciência e a Tecnologia | |
| project.funder.name | Fundação para a Ciência e a Tecnologia | |
| rcaap.rights | openAccess | pt_PT |
| rcaap.type | conferenceObject | pt_PT |
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