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Chemical Control of Struvite Precipitation
Journal of Environmental Engineering, 2003The control of struvite precipitation was investigated using a range of chemical inhibitors and chelating agents. Initial experiments investigated the mass of struvite that precipitated on jar tester impellers used to mix anaerobically digested sludge liquors. Mixing the liquors resulted in degassing of CO2 increasing the pH from below 7 to above 8. It
James D. Doyle +4 more
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Study on precipitation of struvite and struvite-K crystal in goats during onset of urolithiasis
Research in Veterinary Science, 2010To learn more about the biomineralization process of struvite in ruminants, a seldom noticeable crystal, struvite-K, was investigated in six goats in which urolithiasis was induced by feeding a cottonseed meal and rice straw diet supplemented with MgO.
Wei-Dong, Sun +3 more
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Phosphorus Recovery by Methods Beyond Struvite Precipitation
Water Environment Research, 2018Unintentional phosphate precipitation at water resource recovery facilities (WRRFs) causes operation and maintenance challenges. With global phosphorus (P) scarcity looming and receiving water eutrophication caused by excess discharges of P, intentional P recovery at WRRFs has been gaining traction. To date, struvite recovery as slow release fertilizer
Kam P, Law, Krishna R, Pagilla
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Influence of Citric Acid on Struvite Precipitation
Advanced Science Letters, 2017Struvite (MgNH4PO4 · 6H2 O) is a mineral deposit which can be commonly crystallized on the surface of process pipes, pumps, and other industrial equipment and hence influence the performance and maintenance cost. However, struvite is also phosphate minerals that can be used as resources in an industrial fertilizer.
Perwitasari, Dyah Suci +3 more
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Electrochemical Precipitation of Struvite in Acidic Environment
ECS Meeting Abstracts, 2019Phosphorus is a key element of fertilizers required for the food production chain worldwide. However, its global supply is limited to phosphate rocks, which is a non-renewable resource expected to last 50 to 300 years. Nutrients recovery from phosphorus-rich wastewater streams is a promising solution to conserve this valuable resource.
Ali Teymouri +3 more
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Phosphorus Recovery Through Struvite Precipitation From Wastewater: Effect of the Competitive Ions
Desalination and Water Treatment, 2015 In wastewater treatment plants (WWTP), struvite precipitation occurs spontaneously under conditions which are influenced by factors such as: concentration of Mg2+, (Formula presented.) and (Formula presented.) , pH, temperature, and competitive ions ...
Diana López +2 more
exaly +2 more sources
Struvite precipitation from urine with electrochemical magnesium dosage
Water Research, 2013When magnesium is added to source-separated urine, struvite (MgNH(4)PO(4)·6H(2)O) precipitates and phosphorus can be recovered. Up to now, magnesium salts have been used as the main source of magnesium. Struvite precipitation with these salts works well but is challenging in decentralized reactors, where high automation of the dosage and small reactor ...
Hug, Alexandra, Udert, Kai M.
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Spontaneous Precipitation of Struvite From Aqueous Solutions
Journal of Crystal Growth, 2000Abstract The kinetics of the spontaneous precipitation of struvite was investigated in aqueous supersaturated solutions containing stoichiometric concentrations of Mg 2+ , NH 4 + and PO 4 3− ions, ionic strenght 0.15 M NaCl and at 25°C in a batch, stirred reactor at constant supersaturation.
Petros G Koutsoukos
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REM NUT Ion Exchange Plus Struvite Precipitation Process
Environmental Technology, 2001Nutrients control technologies from wastewater are based on destructive technologies which defer the problem fromthe diluted liquid-phase (effluent) to a more concentrated waste (sludge) in the case of phosphates, or to nitrogen gas and/or volatile compounds in the case of ammonia.
L. Liberti, D. Petruzzelli, L. De Florio
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Struvite precipitation from urine – Influencing factors on particle size
Water Research, 2010Struvite crystallisation is a fast and reliable phosphorus removal and recovery process for concentrated waste streams - such as hydrolysed human urine. In order to optimise P-elimination efficiency, it is beneficial to obtain larger particle sizes: they are easier to separate and less prone to wash-out than smaller particles.
Ronteltap, Mariska +3 more
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