Phosphorus recovery as struvite from farm, municipal and industrial waste: Feedstock suitability, methods and pre-treatments

Kataki, Sampriti; West, Helen; Clarke, Michèle L.; Baruah, D.C.

doi:10.1016/j.wasman.2016.01.003

Cited by 145 publications

(81 citation statements)

References 140 publications

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“…Struvite (MgNH 4 PO 4 .6H 2 O), a mineral which can be precipitated from nutrient-rich wastewaters, has shown promise as a slow-release fertilizer of low water solubility and high phosphorus (P) effectiveness (Kataki, West, Clarke, & Baruah, 2016a;Tarayre et al, 2016;Weissengruber, Möller, Puschenreiter, & Friedel, 2018). Given that maximum yields are not achieved due to insufficient P on 40% of global arable land (Zhu, Li, & Whelan, 2018) as well as projected rising fertilizer cost and geopolitical considerations affecting the availability of rock phosphate ore deposits (Egle, Rechberger, & Zessner, 2015), struvite has attracted interest primarily as a potential P source.…”

Section: Introductionmentioning

confidence: 99%

Plant availability of magnesium and phosphorus from struvite with concurrent nitrification inhibitor application

Watson

Clemens²,

Wichern

2019

Soil Use and Management

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Struvite (MgNH4PO4.6H2O) and nitrification inhibitors are applied to soils to, respectively, provide nutrients and reduce nitrogen (N) loss. Given its low N composition (5.7%) relative to that of phosphorus (P, 12.6%) and magnesium (Mg, 9.9%), struvite could be added to soil concurrently with N fertilizers as a source of P and Mg. Nutrient release from struvite could be impacted if nitrification of its ammonium component is reduced by a nitrification inhibitor. Accordingly, a pot trial gauged whether struvite‐fertilized ryegrass had comparable Mg or P uptake and shoot yields with treatments receiving conventional Mg and P fertilizers. Struvite precipitated from milk industry wastewater, or conventional fertilizers, were added to a soil–sand mixture of low fertility. The inhibitor dicyandiamide (DCD) was added to assess its effect on P uptake by ryegrass. Relative to Epsom salt, struvite led to increased Mg uptake without significantly affecting shoot biomass, indicating luxury consumption. Regarding shoot yield and P uptake, struvite was as effective as triple super phosphate. DCD significantly reduced P uptake in the first harvest; the inhibited nitrification of the ammonium is surmised to have diminished struvite dissolution. In later harvests, DCD led to a trend (albeit not statistically significant) of increased biomass; this N‐rich (66% N) compound was probably biodegraded and utilized as an N source. The impact of DCD on P uptake in this experiment was short‐lived. Nevertheless, DCD degradation occurs less rapidly in field conditions, potentially affecting early P supply which is vital for optimum yield.

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Section: Introductionmentioning

confidence: 99%

Plant availability of magnesium and phosphorus from struvite with concurrent nitrification inhibitor application

Watson

Clemens²,

Wichern

2019

Soil Use and Management

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“…The crystallization of struvite (MgNH 4 PO 4 ·6H 2 O) is relevant for nutrient (nitrogen and phosphorus) [1,2] recovery in waterp urification [3][4][5][6][7][8] and scale formation in pipelines, [9,10] and it is ap rimary componento fs o-called infection stones arising from urinary tract infections. [11][12][13] The vast majority of studies focused on struvite haveo verlooked fundamentala spectso fc rystal nucleationa nd growth at the near molecular level.K nowledge of these processes can aid in the design of conditions that either promote or inhibit struvitef ormation, dependingo nt he application.…”

Section: Introductionmentioning

confidence: 99%

Time‐Resolved Dynamics of Struvite Crystallization: Insights from the Macroscopic to Molecular Scale

Kim

Olympiou

McCoy

et al. 2020

Chemistry A European J

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The crystallization of magnesium ammonium phosphate hexahydrate (struvite) often occurs under conditions of fluid flow, yet the dynamics of struvite growth under these relevant environments has not been previously reported. In this study, we use a microfluidic device to evaluate the anisotropic growth of struvite crystals at variable flow rates and solution supersaturation. We show that bulk crystallization under quiescent conditions yields irreproducible data owing to the propensity of struvite to adopt defects in its crystal lattice, as well as fluctuations in pH that markedly impact crystal growth rates. Studies in microfluidic channels allow for time‐resolved analysis of seeded growth along all three principle crystallographic directions and under highly controlled environments. After having first identified flow rates that differentiate diffusion and reaction limited growth regimes, we operated solely in the latter regime to extract the kinetic rates of struvite growth along the [100], [010], and [001] directions. In situ atomic force microscopy was used to obtain molecular level details of surface growth mechanisms. Our findings reveal a classical pathway of crystallization by monomer addition with the expected transition from growth by screw dislocations at low supersaturation to that of two‐dimensional layer generation and spreading at high supersaturation. Collectively, these studies present a platform for assessing struvite crystallization under flow conditions and demonstrate how this approach is superior to measurements under quiescent conditions.

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“…In animals, it is found in blood, nerves, and muscles. It is also found in their bones and teeth in the form of calcium phosphate as hydroxyapatite, Ca 2 (OH)(PO 4 ) 3 , and fluoroapatite, Ca 5 (F,OH)(PO 4 ) 3 . In food, phosphorus occurs as organic phosphate, dicalcium-and tricalcium phosphate, 1 and ferric phosphate.…”

Section: Introductionmentioning

confidence: 99%

“…On a practical scale, phosphate-containing products are mainly formed from phosphoric acid (H 3 PO 4 ). [2][3][4][5] Phosphate accumulates mainly as polyphosphate. Phosphoruscontaining storage compounds may be inorganic or organic.…”

Section: Introductionmentioning

confidence: 99%

Biogenic Synthesis of Important Environmental Minerals: Magnesium Phosphate Compounds and Perspectives

Durán¹,

Fávaro²

2018

Quim. Nova

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Recebido em 18/12/2017; aceito em 22/01/2018; publicado na web em 22/02/2018The ecological processes in which metabolites with industrial or medical applications are produced are of great importance. Magnesium plays many important roles in environmental and medical applications. Phosphorus is obtained by mining. It is estimated to have a very limited half-life and expected to be depleted as a resource in 100 years. Its recovery by mining and subsequent marketing as phosphate has important environmental implications. These processes are part of an important recovery technology. Bacteria have contributed to the formation of minerals since the advent of life on Earth. Bacterial and/or fungal biomineralizations play a critical role in biogeochemical cycles. These processes have important technological and environmental applications. In many past publications dealing with bacterial and fungal recovery of phosphates as insoluble products, magnesium played an important role. This is a review of recent progress in the microbial recovery of biogenic magnesium phosphate compounds, their importance, and their roles in treatment of several human diseases.

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Phosphorus recovery as struvite from farm, municipal and industrial waste: Feedstock suitability, methods and pre-treatments

Cited by 145 publications

References 140 publications

Plant availability of magnesium and phosphorus from struvite with concurrent nitrification inhibitor application

Plant availability of magnesium and phosphorus from struvite with concurrent nitrification inhibitor application

Time‐Resolved Dynamics of Struvite Crystallization: Insights from the Macroscopic to Molecular Scale

Biogenic Synthesis of Important Environmental Minerals: Magnesium Phosphate Compounds and Perspectives

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