Integration of powdered Ca-activated zeolites in a hybrid sorption-membrane ultrafiltration process for phosphate recovery

The feasibility of continuous phosphate recovery, by adsorption on powdered Ca-activated zeolite (PAZ), was assessed in a hybrid sorption membrane ultrafiltration (UF) system. The objective was to explore the influence of process parameters such as initial P(V) concentration, pH, and PAZ dose on P(V...

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Detalles Bibliográficos
Autores: Hermassi, Mehrez|||0000-0001-5338-7139, Valderrama Ángel, César Alberto|||0000-0001-6711-8183, Gibert Agulló, Oriol|||0000-0002-7313-5147, Moreno Palmerola, Natalia, Font Piqueras, Oriol, Querol Carceller, Xavier, Batis, Narjes, Cortina Pallás, José Luis|||0000-0002-3719-5118
Tipo de recurso: artículo
Fecha de publicación:2016
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/96702
Acceso en línea:https://hdl.handle.net/2117/96702
https://dx.doi.org/10.1021/acs.iecr.6b00878
Access Level:acceso abierto
Palabra clave:Sewage--Purification
Membranes (Technology)
Phosphates
Waste-water
aqueous-solution
fly-ash
removal
phoshorus
adsorption
filtration
PAC
hydroxypatite
transformation
Membranes (Tecnologia)
Zeolites
Fosfats -- Absorció i adsorció
Aigües residuals -- Depuració -- Eliminació de fosfats
Àrees temàtiques de la UPC::Enginyeria química
Descripción
Sumario:The feasibility of continuous phosphate recovery, by adsorption on powdered Ca-activated zeolite (PAZ), was assessed in a hybrid sorption membrane ultrafiltration (UF) system. The objective was to explore the influence of process parameters such as initial P(V) concentration, pH, and PAZ dose on P(V) recovery from a tertiary treatment effluent. The hydrodynamic parameters of the UF operation were also evaluated as a function of the PAZ dose. The P(V) recovery profiles as a function of the initial P(V) concentrations, at pH 8 and 2.5 gpAz/L, indicated that the sorbent was not saturated, and recoveries reported were 1.8 +/- 0.2, 5.7 +/- 0.3, and 47.2 +/- 2 mg P(V)/gpAz for 10 +/- 1, 25 2, and 100 +/- 6 mg P(V)/L, respectively. The increase of the pH of the feed solution from 8 to 9 increased the P(V) recovery up to 70 4%. A P(V) fractionation protocol of the loaded samples confirmed that the phosphate -sorption process involves the formation of calcium phosphate mineral forms

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