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dc.contributor.authorDos Reis, Glaydson Simões
dc.contributor.authorCazacliu, Bogdan G
dc.contributor.authorRodríguez Correa, Catalina
dc.contributor.authorOvsyannikova, Ekaterina
dc.contributor.authorKruse, Andrea
dc.contributor.authorHoffmann Sampaio, Carlos
dc.contributor.authorLima, Eder Claudio
dc.contributor.authorDotto, Guillherme Luiz
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Minera, Industrial i TIC
dc.identifier.citationSimoes dos Reis, G. [et al.]. Adsorption and recovery of phosphate from aqueous solution by the construction and demolition wastes sludge and its potential use as phosphate-based fertiliser. "Journal of environmental chemical engineering", 1 Febrer 2020, vol. 8, núm. 1, p. 103605: 1-103605: 11.
dc.description.abstractThis study aimed to investigate phosphate removal from aqueous effluents by an inorganic sludge from the inert part of construction and demolition wastes (CSW) as adsorbent. It is also discussed the application of the loaded P adsorbent as potential fertiliser. The CSW was also thermally treated at 800¿°C for 2¿h (CSW-T), and its influence in the P removal was also investigated. The characterisation techniques highlighted low porosity on CSW and CSW-T adsorbents and that they are mainly formed by oxides which could enhance the P uptake and recovery. In pH experiments, P adsorption increased as initial pH increased, at pH higher than 7.8 the P removal sharply increased due to the formation of calcium phosphate precipitate. The mechanism of the P adsorption onto CSW indicated that the process was mainly controlled by chemical bonding or chemisorption. The results showed that CSW-T was more effective for P removal in comparison to CSW based on the Liu isotherm, the maximum sorption capacity attained was 24.04 (CSW) and 57.64¿mg¿g-1 (CSW-T). Based on the Avrami’s kinetic models, the time for attaining 95% of saturation was 212.6 (CSW), and 136.6¿min (CSW-T). CSW and CSW-T showed the highest phosphate-removal performance among many adsorbents found in the literature; therefore, this kind of waste can be used widely as an inexpensive phosphate-recovery adsorbent. Besides, the P loaded adsorbents could be used as potential fertilisers which could be an interesting and efficient way of reuse for this waste.
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.subjectÀrees temàtiques de la UPC::Enginyeria química::Química del medi ambient
dc.subject.lcshPhosphates -- Absorption and adsorption
dc.subject.lcshPhosphatic fertilizers
dc.subject.lcshConstruction and demolition debris
dc.subject.otherRecycling and valorisation
dc.subject.otherConstruction and demolition waste sludge
dc.subject.otherCheap and abundant adsorbent
dc.subject.otherPhosphorus adsorption
dc.subject.otherPotential fertiliser
dc.titleAdsorption and recovery of phosphate from aqueous solution by the construction and demolition wastes sludge and its potential use as phosphate-based fertiliser
dc.subject.lemacFosfats -- Absorció i adsorció
dc.subject.lemacAdobs fosfàtics
dc.contributor.groupUniversitat Politècnica de Catalunya. GREMS - Grup de Recerca en Mineria Sostenible
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
dc.description.versionPostprint (published version)
local.citation.authorSimoes dos Reis, G.; Grigore, B.; Rodríguez, C.; Ovsyannikova, E.; Kruse, A.; Hoffmann, C.; Lima, E.; Dotto, G.
local.citation.publicationNameJournal of environmental chemical engineering
local.citation.startingPage103605: 1
local.citation.endingPage103605: 11

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Attribution-NonCommercial-NoDerivs 3.0 Spain
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