Publication
Treatment of leachate waters by wet peroxide oxidation with a compost-based catalyst: effect of pH
| dc.contributor.author | Batista, Gabriel de Freitas | |
| dc.contributor.author | Roman, Fernanda | |
| dc.contributor.author | Díaz de Tuesta, Jose Luis | |
| dc.contributor.author | Mambrini, Raquel Vieira | |
| dc.contributor.author | Gomes, Helder | |
| dc.date.accessioned | 2023-02-27T14:47:40Z | |
| dc.date.available | 2023-02-27T14:47:40Z | |
| dc.date.issued | 2021 | |
| dc.description.abstract | A compost-based catalyst was synthesized by hydrothermal carbonization following the procedure described elsewhere1 (3 g of compost in 30 mL of water, 230 °C for 2 h). The material was assessed in the catalytic wet peroxide oxidation (CWPO) of a leachate water, generated during an anaerobic digestion of municipal solid waste. The leachate water is characterized by a high pollutant load (chemical oxygen demand, COD, of 60 g L-1 and total organic carbon, TOC, of 27 g L-1). The CWPO runs were conducted at initial pH (pH0) of 3 and 6, and at the natural pH of the effluent (7.2), Ccatalyst = 1.8 g L-1, 80 °C, and the stoichiometric concentration of H2O2 needed to mineralize the organic content (based on COD). Fig. 1 shows the results obtained along the reaction. An acidic pH (pH0 = 3) resulted in a more controlled, but also incomplete, consumption of H2O2, leading to a low conversion of COD and TOC (20 and 10%, respectively). Contrarily, the natural pH led to a very fast and uncontrolled consumption of the oxidant source, resulting in 100% decomposition of H2O2 in less than 2 h of reaction, but failing to remove COD or TOC (negligible removal, ca. 0%), ascribed to parasitic reactions occurring by the inefficient consumption of H2O2. At pH0 = 6, an intermediate behavior was observed: complete decomposition of H2O2 was possible, at a more controlled rate compared to the natural pH. The result was an increment in COD (41%) and TOC removals (19%), almost two times than that observed at the pH0 3. | pt_PT |
| dc.description.sponsorship | This work was financially supported by project “VALORCOMP - Valorización de compost y otros desechos procedentes de la fracción orgánica de los residuos municipales”, with reference 0119_VALORCOMP_2_P, through FEDER under Program INTERREG; Base Funding - UIDB/50020/2020 of the Associate Laboratory LSRE-LCM - funded by national funds through FCT/MCTES (PIDDAC); CIMO (UIDB/00690/2020) through FEDER under Program PT2020, and national funding by FCT, Foundation for Science and Technology, and European Social Fund, FSE, through the individual research grant SFRH/BD/143224/2019 of Fernanda Fontana Roman. | pt_PT |
| dc.description.version | info:eu-repo/semantics/publishedVersion | pt_PT |
| dc.identifier.citation | Batista, Gabriel de Freitas; Roman, Fernanda; Díaz de Tuesta, Jose Luis; Mambrini, Raquel Vieira; Gomes, Helder (2021). Treatment of leachate waters by wet peroxide oxidation with a compost-based catalyst: effect of pH. In Book of Abstracts of XI National Meeting on Catalysis and Porous Materials - II Meeting of the Carbon Group. Aveiro | pt_PT |
| dc.identifier.uri | http://hdl.handle.net/10198/27236 | |
| dc.language.iso | eng | pt_PT |
| dc.peerreviewed | yes | pt_PT |
| dc.publisher | Sociedade Portuguesa de Química | pt_PT |
| 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 | pH | pt_PT |
| dc.subject | H2O2 | pt_PT |
| dc.title | Treatment of leachate waters by wet peroxide oxidation with a compost-based catalyst: effect of pH | pt_PT |
| dc.type | conference object | |
| dspace.entity.type | Publication | |
| 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/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 | Aveiro | pt_PT |
| oaire.citation.endPage | 79 | pt_PT |
| oaire.citation.startPage | 79 | pt_PT |
| oaire.citation.title | XI National Meeting on Catalysis and Porous Materials: Book of abstracts | pt_PT |
| oaire.fundingStream | 6817 - DCRRNI ID | |
| oaire.fundingStream | 6817 - DCRRNI ID | |
| oaire.fundingStream | POR_NORTE | |
| person.familyName | Batista | |
| person.familyName | Roman | |
| person.familyName | Díaz de Tuesta | |
| person.familyName | Gomes | |
| person.givenName | Gabriel De Freitas | |
| person.givenName | Fernanda | |
| person.givenName | Jose Luis | |
| person.givenName | Helder | |
| person.identifier.ciencia-id | 4716-515C-D71A | |
| person.identifier.ciencia-id | EE1B-DAA7-D0BD | |
| person.identifier.ciencia-id | 7A1F-022B-7DBF | |
| person.identifier.ciencia-id | 6218-1E19-13EE | |
| person.identifier.orcid | 0000-0002-9195-4330 | |
| person.identifier.orcid | 0000-0001-5360-5298 | |
| 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.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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