Engineering of struvite crystals by regulating supersaturation – Correlation with phosphorus recovery, crystal morphology and process efficiency
نویسندگان
چکیده
منابع مشابه
Phosphorus Recovery from Wastewater by Struvite Crystallisation: a Review
The present review provides an understanding of principles of struvite crystallisation and examines the techniques and processes experimented to date by researchers at laboratory, pilot and full scale to maximise phosphorus removal and reuse as struvite from wastewater effluents. Struvite is mainly known as a scale deposit causing concerns to wastewater companies. Indeed struvite naturally occu...
متن کاملPhosphorus Recovery from Animal Manures using Optimized Struvite Precipitation
The over-application of phosphorus, as manure by animal feeding operations, is a threat to surface water quality. Concentration of animal feeding operations and over application of manures to cropland has lead to a build-up of phosphorus on many farms (Greaves et al., 1999). Relative to crop needs, manure slurries contain higher levels of phosphorus than nitrogen. When manure is applied to meet...
متن کاملDetermination of Crystal Growth Rate and Morphology of Barium Carbonate Crystals in a Semi-batch Crystallizer
A semi-batch crystallization system is used to determine growth kinetics and morphology of barium carbonate crystals, under a constant pH value and constant temperature in the various relative supersaturations. Results show that crystal growth rate satisfies a first-order kinetic expression at high relative supersaturation, while at relative supersaturation values lower than 3, the k...
متن کاملA novel approach describing struvite crystal aggregation and granulation in the fluidized bed for phosphorus recovery from swine wastewater
Fluidized bed is commonly used for struvite (MgNH4PO4·6H2O) recovery from wastewater. However, effective methods are lacking to describe the properties of the millimeter-scale struvite pellets in the fluidized bed, with the consequence of not predicting and optimizing the granulation process effectively. In this work, swine wastewater was used as the medium for struvite recovery by using fluidi...
متن کاملEFFECT OF INITIAL SOLUTION pH ON SOLUBILITY AND MORPHOLOGY OF STRUVITE CRYSTALS
Struvite is known to form a hard scale in specific areas of wastewater treatment plants. Besides causing problems; struvite can also be used as a fertilizer. Good and reliable solubility data is essential for controlling the crystallisation of struvite. One of the important factors that affect the crystallisation of struvite is solution pH. Therefore, this study was undertaken to investigate in...
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ژورنال
عنوان ژورنال: Journal of Environmental Chemical Engineering
سال: 2019
ISSN: 2213-3437
DOI: 10.1016/j.jece.2019.102918