Surface diagnostics for scale analysis

Dunn, Steven C.; Impey, S. A.; Kimpton, Christine; Parsons, Simon A.; Doyle, James; Jefferson, Bruce

doi:10.2166/wst.2004.0120

Cited by 9 publications

(2 citation statements)

References 5 publications

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“…SEM and XRD were respectively used to describe the morphology and structure characteristics of the prepared precipitate while the corresponding data were shown in Supplementary material. It can be observed that prepared precipitate showed typical orthorhombic shapes, which was in agreement with the morphology of struvite reported previously (Dunn et al, 2004). Furthermore, the diffraction peaks exist on the XRD pattern of the prepared precipitate can be clearly identified, which was similar to position and intensity of the reference struvite (see Supplementary material).…”

Section: Phosphorus and Ammonium Recovery As Mapsupporting

confidence: 89%

Feasibility of enhancing short-chain fatty acids production from waste activated sludge after free ammonia pretreatment: Role and significance of rhamnolipid

Liu

et al. 2018

Bioresource Technology

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This study reported a new, renewable and high-efficient strategy for anaerobic fermentation, i.e., using free ammonia (FA) to pretreat waste activated sludge (WAS) for 1 d and then combining with rhamnolipid (RL), by which the short-chain fatty acids (SCFA) production was remarkably improved. Experimental results showed the maximal SCFA production of 324.7 ± 13.9 mg COD/g VSS was achieved at 62.6 mg FA/L pretreatment combined with 0.04 g RL/g TSS, which was respectively 5.95-fold, 1.63-fold and 1.41-fold of that from control, FA pretreatment and RL pretreatment. Mechanism investigations revealed that FA + RL enhanced sludge solubilization and hydrolysis, providing more organics for subsequent SCFA production. It was also found that the combined method inhibited acidogenesis and methanogenesis, but the inhibition to methanogenesis was much severer than that to acidogenesis. Finally, the feasibility of NH-N and PO-P, released in fermentation liquor, being recovered as magnesium ammonium phosphate (MAP) was confirmed.

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Section: Phosphorus and Ammonium Recovery As Mapsupporting

confidence: 89%

Feasibility of enhancing short-chain fatty acids production from waste activated sludge after free ammonia pretreatment: Role and significance of rhamnolipid

Liu

et al. 2018

Bioresource Technology

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“…Orthorhombic (space group Pmn2 1 ): regular  3 4 PO octahedra, distorted Mg(H 2 O)  2 6 octahedral, and NH 4 groups all held together by hydrogen bonding, (Abbona and Boistelle, 1979). Dunn et al (2004) Le Corre et al (2007a) Molecular weight 245.43 g.mol -1…”

Section: Structurementioning

confidence: 99%

Phosphorus Recovery from Wastewater by Struvite Crystallization: A Review

Corre

Valsami-Jones

Hobbs³

et al. 2009

Critical Reviews in Environmental Science and Technology

686

423

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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 occurs under specific condition of pH and mixing energy in specific areas of wastewater treatment plants (e.g. pipes, heat exchangers) when concentrations of magnesium, phosphate and ammonium approach an equimolar ratio 1:1:1. However, thanks to struvite composition and its fertilising properties, the control of its precipitation could contribute to the reduction of phosphorus levels in effluents while simultaneously generate a valuable end by-product. A number of processes such as stirred tank reactors, air agitated and fluidised bed reactors have been investigated as possible configurations for struvite recovery. Fluidised bed reactors emerged as one of the promising solutions for removing and recovering phosphorus as struvite. Phosphorus removal can easily reach 70% or more, although the technique still needs improvement with regards to controlling struvite production quality and quantity to become broadly established as a standard treatment for wastewater companies.

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Phosphorus removal and recovery from wastewater by highly efficient struvite crystallization in an improved fluidized bed reactor

Lü

Zhang

et al. 2017

Korean J. Chem. Eng.

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Surface diagnostics for scale analysis

Cited by 9 publications

References 5 publications

Feasibility of enhancing short-chain fatty acids production from waste activated sludge after free ammonia pretreatment: Role and significance of rhamnolipid

Feasibility of enhancing short-chain fatty acids production from waste activated sludge after free ammonia pretreatment: Role and significance of rhamnolipid

Phosphorus Recovery from Wastewater by Struvite Crystallization: A Review

Phosphorus removal and recovery from wastewater by highly efficient struvite crystallization in an improved fluidized bed reactor

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