Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/90286
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Campo DC | Valor | Idioma |
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dc.contributor.author | Viegas, Catarina | por |
dc.contributor.author | Nobre, Catarina | por |
dc.contributor.author | Mota, André Manuel Oliveira | por |
dc.contributor.author | Vilarinho, Cândida | por |
dc.contributor.author | Gouveia, Luisa | por |
dc.contributor.author | Gonçalves, Margarida | por |
dc.date.accessioned | 2024-03-28T18:24:48Z | - |
dc.date.available | 2024-03-28T18:24:48Z | - |
dc.date.issued | 2021-02 | - |
dc.identifier.citation | Viegas, C., Nobre, C., Mota, A., Vilarinho, C., Gouveia, L., & Gonçalves, M. (2021, June). A circular approach for landfill leachate treatment: Chemical precipitation with biomass ash followed by bioremediation through microalgae. Journal of Environmental Chemical Engineering. Elsevier BV. http://doi.org/10.1016/j.jece.2021.105187 | por |
dc.identifier.issn | 2213-2929 | por |
dc.identifier.uri | https://hdl.handle.net/1822/90286 | - |
dc.description | Supplementary data associated with this article can be found in the online version at doi: 10.1016/j.jece.2021.105187. | por |
dc.description.abstract | The aim of this work was to study an integrated approach for landfill leachate remediation comprising chemical precipitation with biomass bottom ash as a pre-treatment to reduce color and turbidity followed by bioremediation through microalgae treatment for effluent disposal. Optimal pre-treatment conditions were determined through batch experiments and were found to be 160 g L 1 ash dose, 96 h of contact time, overhead agitation at 15 rpm and ash particle size below 500 μm. These conditions led to removal efficiencies of 74.3% for chemical oxygen demand and 98.5% for color. Large quantities of sludge containing excess biomass ash and precipitated compounds were formed during the pre-treatment. To minimize solid disposal, this sludge was tested as a raw material for cementitious and aggregate substitute in mortar formulations. Following the pre-treatment, the leachate was inoculated with six different microalgae species to evaluate their ability to grow in such a recalcitrant effluent and remediate it. After a period of 27 days biomass concentration from 0.4 to 1.2 g L 1 were achieved for the tested microalgae. Removal efficiencies were in the range of 18–62% for COD, 63–71% for N, and 15–100% for P. At the end of the treatment, algal biomass was characterized regarding protein, lipid, fatty acids, carbohydrate, and ash contents. This approach allows a low-cost remediation of these recalcitrant effluents when compared with the present options that include inverse osmosis, and the valorization of ash-rich precipitates and microalgae biomass improves the sustainability of the overall process. | por |
dc.description.sponsorship | This work was supported by the CITRI, S.A. project I&DT no 24878. And by FCT - Fundação para a Ciência e Tecnologia, through grant SFRH/BD/131178/2017 and within the R&D Units Project Scope UIDP/04077/2020. Project ALGAVALOR - Lisboa-01-0247-FEDER-035234, supported by Operational Programme for Competitiveness and Inter nationalization (COMPETE2020), by Lisbon Portugal Regional Opera tional Programme (Lisboa 2020) and by Algarve Regional Operational Programme (Algarve 2020) under the Portugal 2020 Partnership Agreement, through the European Regional Development Fund (ERDF); Red CYTED P319RT0025 - RENUWAL - Red Iberoamericana para el Tratamiento de Efluentes con Microalgas. | por |
dc.language.iso | eng | por |
dc.publisher | Elsevier 1 | por |
dc.relation | info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F04077%2F2020/PT | por |
dc.relation | info:eu-repo/grantAgreement/FCT/OE/SFRH%2FBD%2F131178%2F2017/PT | por |
dc.rights | openAccess | por |
dc.subject | Landfill leachate treatment | por |
dc.subject | Bottom ash | por |
dc.subject | Precipitation | por |
dc.subject | Mortars | por |
dc.subject | Microalgae | por |
dc.subject | Wastewater treatment | por |
dc.title | A circular approach for landfill leachate treatment: Chemical precipitation with biomass ash followed by bioremediation through microalgae | por |
dc.type | article | por |
dc.peerreviewed | yes | por |
dc.relation.publisherversion | https://www.sciencedirect.com/science/article/pii/S2213343721001640 | por |
oaire.citationIssue | 9 | por |
oaire.citationVolume | 9 | por |
dc.identifier.doi | 10.1016/j.jece.2021.105187 | por |
dc.subject.fos | Engenharia e Tecnologia::Engenharia do Ambiente | por |
dc.subject.wos | Science & Technology | por |
sdum.journal | Journal of Environmental Chemical Engineering | por |
oaire.version | VoR | por |
Aparece nas coleções: | MEtRICs - Artigos em revistas internacionais/Papers in international journals |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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A circular approach for landfill leachate treatment Chemical precipitation.pdf | 1,01 MB | Adobe PDF | Ver/Abrir |