Results 11 to 20 of about 521,823 (197)
A comparison of struvite precipitation thermodynamics and kinetics modelling techniques
Water Science and Technology, 2023 Solution thermodynamics and kinetic modelling applied to struvite crystallisation–precipitation were reviewed from diverse references to determine proximity between predicted and cited experimental measurements.
Leynard Natividad-Marin +2 more
doaj +4 more sources
On precipitation of struvite (MgNH4PO4.6H2O)
Journal of Science & Science Education, 2017 Excessive input of N and P into water bodies causes eutrophication which leads to deterioration of aquatic evironments and has adverse effects naturally and economically. It is therefore urgent to remove N and P from wastewater prior to disposal into inland and coastal waters.
Stefanus Muryanto
openaire +3 more sources
Study of struvite precipitation in anaerobic digesters [PDF]
Water Research, 1994 Peer ...
Maqueda Porras, Celia +2 more
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Struvite precipitation assessment in anaerobic digestion processes [PDF]
Chemical Engineering Journal, 2008 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
Martí Ortega, Nuria +3 more
openaire +4 more sources
Effect of Seeding Materials and Mixing Strength on Struvite Precipitation [PDF]
Water Environment Research, 2006 Struvite precipitation has increasing interest as a technology for removing and recovering phosphorus from wastewater streams. Many chemical factors have been studied, such as optimum pH values and component‐ion molar ratios, yet, understanding of physical aspects is lacking.
Jun, Wang, Joel G, Burken, Xiaoqi, Zhang
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Struvite precipitation thermodynamics in source-separated urine
Water Research, 2007 Struvite (MgNH(4)PO(4).6H(2)O) precipitation eliminates phosphate efficiently from urine, a small but highly concentrated stream in the total flux of domestic wastewater. Precipitation experiments with hydrolysed urine evaluated the solubility product of struvite. The stored and fully hydrolysed urine had an ionic strength of between 0.33 and 0.56M and
Ronteltap, Mariska +2 more
openaire +5 more sources
Membrane filtration pretreatment preceding struvite precipitation [PDF]
, 2020 The ability of Microfiltration (MF) and Ultrafiltration (UF) technique for separation of organic matter in treatment of nutrient rich fluids is investigated in the study. Such separation is of great importance in case of performing magnesium-ammonium phosphate hexahydrate (struvite) precipitation as the struvite yield depends negatively on organic ...
Peeva, G. +4 more
openaire +2 more sources
Struvite Precipitation and Biological Dissolutions.
, 2010 Struvite is a salt that is formed out of Mg2+,NH4+ and PO43- and it crystallizes in form of MgNH4PO4.6H2O. Struvite‟s (magnesium ammonium phosphate or MAP) precipitation has recently been regarded as an interesting technique to remove phosphate and ammonium from waste water. The high elimination rates and the possibility of recycling the struvite as a
Ezquerro, Ander
core +4 more sources
Modelling struvite precipitation in anaerobic treatment systems
Water Science and Technology, 1994 Struvite precipitation is common in waste water systems containing high concentrations of dissolved orthophosphates, free and saline ammonia and magnesium ions, such as in anaerobic fermentation systems, often leading to severe fouling. It appears that a reduction of the partial pressure of CO2, ie.
E. P. van Heerden +2 more
openaire +2 more sources
Understanding struvite crystallisation and recovery [PDF]
, 2006 Struvite crystallisation from wastewater effluents is seen as an alternative to traditional biological and chemical phosphorus removal processes used widely in the wastewater treatment industry. It presents the advantage of not only removing phosphorus
Le Corre, Kristell S.
core +7 more sources