Struvite precipitation assessment in anaerobic digestion processes
NAGIOS: RODERIC FUNCIONANDO

Struvite precipitation assessment in anaerobic digestion processes

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Struvite precipitation assessment in anaerobic digestion processes

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dc.contributor.author Martí Ortega, Nuria
dc.contributor.author Bouzas Blanco, Alberto
dc.contributor.author Seco Torrecillas, Aurora
dc.contributor.author Ferrer Polo, José
dc.date.accessioned 2019-11-05T14:46:35Z
dc.date.available 2019-11-05T14:46:35Z
dc.date.issued 2008
dc.identifier.uri https://hdl.handle.net/10550/72027
dc.description.abstract Struvite precipitation causes important operational problems during the sludge treatment process, especially when EBPR sludge is treated. Predicting struvite formation is critical to be able to design process alternative that best minimises struvite precipitation. With this aim, phosphorus precipitation in an anaerobic digestion pilot plant was studied using experimental data and mass balance analysis. The results obtained showed significant phosphorus precipitation as struvite (58% of the fixed phosphorus) and a low precipitation of calcium phosphates (15%), forming mainly hydroxyapatite (HAP). The rest of the phosphorus fixed in the digester (27%) was attributed to adsorption processes on solid surfaces. The effect of pH and available phosphorus concentration on phosphorus fixation in the digester was also studied, indicating that a decrease of available PO 4 -P concentration in the digester can minimise phosphorus precipitation, reducing the maintenance problems associated with struvite deposits.
dc.language.iso eng
dc.relation.ispartof Chemical Engineering Journal, 2008, vol. 141, p. 67-74
dc.rights.uri info:eu-repo/semantics/openAccess
dc.source Martí Ortega, Nuria Bouzas Blanco, Alberto Seco Torrecillas, Aurora Ferrer Polo, José 2008 Struvite precipitation assessment in anaerobic digestion processes Chemical Engineering Journal 141 67 74
dc.subject Aigües residuals
dc.title Struvite precipitation assessment in anaerobic digestion processes
dc.type info:eu-repo/semantics/article
dc.date.updated 2019-11-05T14:46:36Z
dc.identifier.doi https://doi.org/10.1016/j.cej.2007.10.023
dc.identifier.idgrec 040495

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