Comparison of filtration characteristics of organic and inorganic membranes was made in terms of physicochemical properties of the membrane materials, cake layer formation, backflushing and backfeeding effects in a membrane-coupled anaerobic bioreactor. For the inorganic membrane, struvite (MgNH4PO4 x 6H2O) was found to have accumulated inside the membrane pore and plays a key role in flux decl...

Food security depends on sustainable phosphorus (P) fertilisers, which at present are mostly supplied from a finite rock phosphate source. Phosphate (PO43−) and ammonium (NH4+) in dairy processing wastewater can be recovered as struvite (Mg + NH4+ PO43− 6H20), nutrient rich mineral for fertiliser application. The objectives of this study were to (1) quantify the effects of, pH, temperature Mg: ...

The struvite crystals constitute one of the common types urinary stones. Such stones are also referred as “infection stones” due to their tendency cause infections in tract. A considerable effort has been placed identify natural or synthetic crystal-growth modifiers for this kind stone literature, yet macromolecules commonly found urine have underexplored. In present study, we experimentally fo...

Wastewater contains resources, which can be recovered for secondary use if treated properly. Besides research in zero liquid discharge solutions, the aim of study was a simultaneous recovery products from wastewater treatment plant’s dewatering liquor. To specific, we investigated struvite and irrigation water using electrodialysis (ED) laboratory experiments. Two were obtained ED—concentrate d...

the study area is a part of the sanandaj-sirjan metamorphic belt comprising low- to high-graderegional and contact metamorphic rocks that are intruded by various plutonic bodies. garnet crystals areabundant in pelitic schists, amphibole schists, migmatites, hornfelses and aplites. they are mostly almandinerich(xalm>60) pyralspite garnets and show dodecahedron, trapezohedron and mixed (dodecahed...

Struvite (MgNH4PO4 ∙ 6H2O) has been widely studied as an emerging recycled phosphorous fertilizer despite its low solubility. However, there are few studies on the use of this mineral N fertilizer. This article evaluates two powder struvite-containing materials from wastewater treatment in agricultural soils. A 9-week soil incubation experiment was conducted to compare effectiveness soils with ...

We present a novel ‘proof-of-concept’ electrochemically based membrane filtration process for the recovery of nitrogen and phosphorus from livestock wastewater following an anaerobic digestion step. Reactive electrically conducting membranes are shown to precipitate separate struvite, eco-friendly fertilizer synthetic wastewater, resulting in production solid high-quality water stream, fit irri...