Membrane crystallization for phosphorus recovery and ammonia stripping from reject water from sludge dewatering process

Cejna Anna Quist-Jensen; Jens Martin Sørensen; Andreas  Svenstrup; Luca Scarpa; Thomas Skovfoged Carlsen; Henriette Casper Jensen; Lisbeth Wybrandt; Morten Lykkegaard Christensen

doi:10.1016/j.desal.2017.11.034

Membrane crystallization for phosphorus recovery and ammonia stripping from reject water from sludge dewatering process

Cejna Anna Quist-Jensen, Jens Martin Sørensen, Andreas Svenstrup, Luca Scarpa, Thomas Skovfoged Carlsen, Henriette Casper Jensen, Lisbeth Wybrandt, Morten Lykkegaard Christensen

Research output: Contribution to journal › Journal article › Research › peer-review

48 Citations (Scopus)

Abstract

Membrane crystallization (MCr) have been applied on real wastewater to study the potential of recovering phosphorus as struvite (MgNH ₄PO ₄·H ₂O). The performance of MCr shows a stable flux at recovery factor of 70%. To facilitate struvite precipitation, magnesium has been added in the molar ratio of 1:1.3 of P:Mg. A recovery of 60% phosphorus have been obtained at pH of 8.3 and at recovery factor of 70%. Furthermore, the MCr process allows to produce an ammonia-rich stream on the permeate side, due to the hydrophobic nature of the membrane and the transport of volatile compounds through the membrane. This liquid stream can be considered to be used directly as a fertilizer product.

Original language	English
Journal	Desalination
Volume	440
Pages (from-to)	156-160
Number of pages	5
ISSN	0011-9164
DOIs	https://doi.org/10.1016/j.desal.2017.11.034
Publication status	Published - 2018

Keywords

Ammonia
Membrane crystallization
Membrane distillation
Phosphorus
Struvite

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title = "Membrane crystallization for phosphorus recovery and ammonia stripping from reject water from sludge dewatering process",

abstract = "Membrane crystallization (MCr) have been applied on real wastewater to study the potential of recovering phosphorus as struvite (MgNH 4PO 4·H 2O). The performance of MCr shows a stable flux at recovery factor of 70%. To facilitate struvite precipitation, magnesium has been added in the molar ratio of 1:1.3 of P:Mg. A recovery of 60% phosphorus have been obtained at pH of 8.3 and at recovery factor of 70%. Furthermore, the MCr process allows to produce an ammonia-rich stream on the permeate side, due to the hydrophobic nature of the membrane and the transport of volatile compounds through the membrane. This liquid stream can be considered to be used directly as a fertilizer product. ",

keywords = "Ammonia, Membrane crystallization, Membrane distillation, Phosphorus, Struvite",

author = "Quist-Jensen, {Cejna Anna} and S{\o}rensen, {Jens Martin} and Andreas Svenstrup and Luca Scarpa and Carlsen, {Thomas Skovfoged} and Jensen, {Henriette Casper} and Lisbeth Wybrandt and Christensen, {Morten Lykkegaard}",

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doi = "10.1016/j.desal.2017.11.034",

language = "English",

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T1 - Membrane crystallization for phosphorus recovery and ammonia stripping from reject water from sludge dewatering process

AU - Quist-Jensen, Cejna Anna

AU - Sørensen, Jens Martin

AU - Svenstrup, Andreas

AU - Scarpa, Luca

AU - Carlsen, Thomas Skovfoged

AU - Jensen, Henriette Casper

AU - Wybrandt, Lisbeth

AU - Christensen, Morten Lykkegaard

PY - 2018

Y1 - 2018

N2 - Membrane crystallization (MCr) have been applied on real wastewater to study the potential of recovering phosphorus as struvite (MgNH 4PO 4·H 2O). The performance of MCr shows a stable flux at recovery factor of 70%. To facilitate struvite precipitation, magnesium has been added in the molar ratio of 1:1.3 of P:Mg. A recovery of 60% phosphorus have been obtained at pH of 8.3 and at recovery factor of 70%. Furthermore, the MCr process allows to produce an ammonia-rich stream on the permeate side, due to the hydrophobic nature of the membrane and the transport of volatile compounds through the membrane. This liquid stream can be considered to be used directly as a fertilizer product.

AB - Membrane crystallization (MCr) have been applied on real wastewater to study the potential of recovering phosphorus as struvite (MgNH 4PO 4·H 2O). The performance of MCr shows a stable flux at recovery factor of 70%. To facilitate struvite precipitation, magnesium has been added in the molar ratio of 1:1.3 of P:Mg. A recovery of 60% phosphorus have been obtained at pH of 8.3 and at recovery factor of 70%. Furthermore, the MCr process allows to produce an ammonia-rich stream on the permeate side, due to the hydrophobic nature of the membrane and the transport of volatile compounds through the membrane. This liquid stream can be considered to be used directly as a fertilizer product.

KW - Ammonia

KW - Membrane crystallization

KW - Membrane distillation

KW - Phosphorus

KW - Struvite

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U2 - 10.1016/j.desal.2017.11.034

DO - 10.1016/j.desal.2017.11.034

M3 - Journal article

SN - 0011-9164

VL - 440

SP - 156

EP - 160

JO - Desalination

JF - Desalination

ER -

Membrane crystallization for phosphorus recovery and ammonia stripping from reject water from sludge dewatering process

Abstract

Keywords

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