Release of phosphorus from sewage sludge during ozonation and removal by magnesium ammonium phosphate

2017 ◽  
Vol 24 (30) ◽  
pp. 23794-23802 ◽  
Author(s):  
Jian Zhang ◽  
Yu Tian ◽  
Jun Zhang
Keyword(s):  
Sewage Sludge ◽  
Ammonium Phosphate ◽  
Magnesium Ammonium Phosphate ◽  
Magnesium Ammonium

The Crystallization of Struvite by Recycling Poly-Phosphate Released from Sewage Sludge after Thermal Treatment

2013 ◽  
Vol 781-784 ◽  
pp. 1963-1967
Author(s):  
Ming Yang Zhang ◽  
Ai Min Hao ◽  
Takahiro Kuba
Keyword(s):  
Sewage Sludge ◽  
Thermal Treatment ◽  
Ammonium Phosphate ◽  
Neutral Condition ◽  
Phosphorus Recovery ◽  
Water Bodies ◽  
Phosphorus Compounds ◽  
Magnesium Ammonium Phosphate ◽  
Magnesium Ammonium ◽  
First Time

Because of the shortage crisis of phosphorus element and environmental problems caused by excess discharge of phosphorus compounds into nature water bodies, phosphorus recovery had been research hotspot. Poly-phosphate (poly-P) released from sewage sludge after thermal treatment could be recovered successfully as magnesium ammonium phosphate hexahydrate (MgNH4PO4·6H2O) commonly known as struvite in present study. This phenomenon was the first time to be found in phosphorus recovery from sewage sludge. The parameters affected struvite formation with poly-P had been tested. Poly-P indicated better characteristics in phosphorus recovery compared with ortho-phosphate (Pi) because it can be precipitated at lower pH condition even neutral condition, with less addition of magnesium element.

scholarly journals A Giant Ureteral Stone without Underlying Anatomic or Metabolic Abnormalities: A Case Report

2013 ◽  
Vol 2013 ◽  
pp. 1-3 ◽  
Author(s):  
Selcuk Sarikaya ◽  
Berkan Resorlu ◽  
Ekrem Ozyuvali ◽  
Omer Faruk Bozkurt ◽  
Ural Oguz ◽  
...  
Keyword(s):  
Ureteral Stone ◽  
Ammonium Phosphate ◽  
Intravenous Urography ◽  
Metabolic Abnormalities ◽  
Magnesium Ammonium Phosphate ◽  
Distal Ureter ◽  
Double J Stent ◽  
Magnesium Ammonium ◽  
Left Flank Pain ◽  
Plain Abdominal Film

A 28-year old man presented with left flank pain and dysuria. Plain abdominal film and computed tomography showed a left giant ureteral stone measuring 11.5 cm causing ureteral obstruction and other stones 2.5 cm in size in the lower pole of ipsilateral kidney and 7 mm in size in distal part of right ureter. A left ureterolithotomy was performed and then a double J stent was inserted into the ureter. The patient was discharged from the hospital 4 days postoperatively with no complications. Stone analysis was consistent with magnesium ammonium phosphate and calcium oxalate. Underlying anatomic or metabolic abnormalities were not detected. One month after surgery, right ureteral stone passed spontaneously, left renal stone moved to distal ureter, and it was removed by ureterolithotomy. Control intravenous urography and cystography demonstrated unobstructed bilateral ureter and the absence of vesicoureteral reflux.

In vitro production of struvite by Bacillus pumilus

1991 ◽  
Vol 37 (12) ◽  
pp. 978-983 ◽  
Author(s):  
Berlin Nelson ◽  
James Struble ◽  
Gregory McCarthy
Keyword(s):  
Bacillus Pumilus ◽  
Potassium Phosphate ◽  
Ammonium Phosphate ◽  
Maximum Size ◽  
In Vitro Production ◽  
Magnesium Ammonium Phosphate ◽  
X Ray ◽  
Magnesium Ammonium ◽  
Vitro Production

A strain of Bacillus pumilus, isolated from the soilborne sclerotia of a fungus, produced crystals of the mineral struvite (magnesium ammonium phosphate hexahydrate) on Difco nutrient agar and a yeast extract agar containing magnesium sulphate and potassium phosphate. Crystals were macroscopically observed after 6–20 days of bacterial growth and reached a maximum size of 3 × 0.5 mm. Crystals were identified by X-ray powder diffractometry. These findings support the hypothesis that bacteria are involved in the biogenic formation of struvite in nature. Key words: struvite, magnesium ammonium phosphate hexahydrate, Bacillus pumilus, biomineral.

Annual changes of the incidence and clinical characteristics of magnesium ammonium phosphate urinary stones

2003 ◽  
Vol 10 (1) ◽  
pp. 1-5 ◽  
Author(s):  
TAKAHIDE OGATA ◽  
KOICHIRO AKAKURA ◽  
KEN-ICHI MIZOGUCHI ◽  
KAZUO MIKAMI ◽  
KUNIYOSHI NOZUMI ◽  
...  
Keyword(s):  
Clinical Characteristics ◽  
Ammonium Phosphate ◽  
Urinary Stones ◽  
Magnesium Ammonium Phosphate ◽  
Magnesium Ammonium ◽  
Annual Changes
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