Please use this identifier to cite or link to this item: https://hdl.handle.net/10216/121204
Author(s): barbosa, d
augusto, pa
Teresa Augusto
Javer Rico
Roberto Iglesias
Jorge Marcos
Leticia Merchán
Lorenzo Hernández
Angel M. Estevéz
Title: Decontamination of wastewater and leachates by magnetic particles
Issue Date: 2019-05-27
Abstract: The treatment of leachates as pollutant concentrated wastewaters, is still an open issue, and althoughseveral different methods are applied for this goal, we are still far way from obtaining low-cost and at the sametime efficient processes. Even for wastewater and water, removal of specific contaminants is far from beingeconomical.Magnetic particles (nano or micron-sized), namely those based on iron oxides, have shown good sorptioncapabilities, which may be useful for removal/concentration of pollutants/nutrients. Joining this sorptioncapabilities with their magnetic properties, and with potential functionalization, makes the application of theseparticles for wastewater or leachate treatment very interesting, specially as we may use magnetic separationmethods to further remove, recover and reuse these particles.In this work we have tested three different kind of magnetic particles, in order to remove/concentrateorganic matter (DQO reduction), Nitrogen (Total Nitrogen) and Phosporous (Total Phosporous), during severaltime periods, being successful in removing between 4 and 65 % of them, depending on the controlledparameter, sorption time and type of particle.We have applied the same particles in three different water streams with different degrees of pollution,so we would be able to analyze the pollutant concentration influence: these being water, wastewater andleachate. In Figure 1 we present as example the case of removal for wastewater resultant from sludgecentrifugation, by one of the three different magnetic particle systems we have used.
Subject: Engenharia química, Engenharia química
Chemical engineering, Chemical engineering
Scientific areas: Ciências da engenharia e tecnologias::Engenharia química
Engineering and technology::Chemical engineering
URI: https://hdl.handle.net/10216/121204
Related Information: info:eu-repo/grantAgreement/FCT - Fundação para a Ciência e Tecnologia/Programa de Financiamento Plurianual de Unidades de I&D/UID/EQU/00511/2019 /Laboratório de Engenharia de Processos, Ambiente, Biotecnologia e Energia/LEPABE
info:eu-repo/grantAgreement/Comissão de Coordenação e Desenvolvimento Regional do Norte/P2020|Norte2020-Projetos Integrados ICDT/NORTE-01-0145-FEDER-000005/LEPABE-2-ECO-INNOVATION/LEPABE-2-ECO-INNOVATION
Document Type: Livro de Atas de Conferência Internacional
Rights: restrictedAccess
Appears in Collections:FEUP - Livro de Atas de Conferência Internacional

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