Improved phosphoric acid recovery from sewage sludge ash using layer-by-layer modified membranes

Laura Paltrinieri, Kirsten Remmen, Barbara Müller, Liangyong Chu, Joachim Köser, Thomas Wintgens, Matthias Wessling, Louis C.P.M. de Smet*, Ernst J.R. Sudhölter

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

2 Citations (Scopus)

Abstract

We report an advanced treatment method for phosphoric acid recovery from leached sewage sludge ash. Layer-by-layer (LbL) polyelectrolyte deposition has been used as a tool to modify and convert a hollow ultrafiltration membrane into a nanofiltration (NF) LbL membrane for H3PO4 recovery. To build the LbL membrane, poly(styrenesulfonate) PSS was chosen as polyanion, while three different polycations were used: a permanently charged polyelectrolyte, poly(diallyldimethylammonium chloride), PDADMAC; a pH-dependent charged polyelectrolyte poly(allylamine hydrochloride), PAH; and a PAH modified with guanidinium groups (PAH-Gu). Based on detailed surface characterizations (AFM, XPS and Zeta-potential) it was concluded that both charge density and pH-responsiveness of the polycations are key parameters to control the final membrane surface structure and transport properties. The surface properties of LbL-coated membranes were correlated with the membrane filtration performance, when exposed to the real leached sewage sludge ash solution. The highest permeability was recorded for (PDADMAC/PSS)6, a result that was rationalized on its loose, and possibly less interpenetrated, structure, followed by (PAH-Gu/PSS)6 characterized by a more dense, compact layer. H3PO4 recovery was the highest in the case of (PDADMAC/PSS)6, but the retention of multivalent metals (Fe3+ and Mg2+) was low, leading to a more contaminated permeate. The opposite trend was observed for (PAH-Gu/PSS)6, resulting in a less metal-contaminated, but also a less H3PO4-concentrated permeate. Our LbL-modified membranes were found to improve the permeability and H3PO4 recovery compared to a commercially available acid-resistant NF membrane.

Original languageEnglish
Article number117162
JournalJournal of Membrane Science
Volume587
DOIs
Publication statusPublished - 1 Oct 2019

Fingerprint

Ashes
sewage
sludge
phosphoric acid
Sewage sludge
Phosphoric acid
ashes
Sewage
recovery
Polycyclic aromatic hydrocarbons
membranes
Membranes
Recovery
polycyclic aromatic hydrocarbons
Polyelectrolytes
Metals
Permeability
Nanofiltration membranes
Nanofiltration
Guanidine

Keywords

  • Layer-by-layer
  • Phosphate recovery
  • Polyelectrolyte
  • Sewage sludge ash
  • Water treatment

Cite this

Paltrinieri, L., Remmen, K., Müller, B., Chu, L., Köser, J., Wintgens, T., ... Sudhölter, E. J. R. (2019). Improved phosphoric acid recovery from sewage sludge ash using layer-by-layer modified membranes. Journal of Membrane Science, 587, [117162]. https://doi.org/10.1016/j.memsci.2019.06.002
Paltrinieri, Laura ; Remmen, Kirsten ; Müller, Barbara ; Chu, Liangyong ; Köser, Joachim ; Wintgens, Thomas ; Wessling, Matthias ; de Smet, Louis C.P.M. ; Sudhölter, Ernst J.R. / Improved phosphoric acid recovery from sewage sludge ash using layer-by-layer modified membranes. In: Journal of Membrane Science. 2019 ; Vol. 587.
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title = "Improved phosphoric acid recovery from sewage sludge ash using layer-by-layer modified membranes",
abstract = "We report an advanced treatment method for phosphoric acid recovery from leached sewage sludge ash. Layer-by-layer (LbL) polyelectrolyte deposition has been used as a tool to modify and convert a hollow ultrafiltration membrane into a nanofiltration (NF) LbL membrane for H3PO4 recovery. To build the LbL membrane, poly(styrenesulfonate) PSS was chosen as polyanion, while three different polycations were used: a permanently charged polyelectrolyte, poly(diallyldimethylammonium chloride), PDADMAC; a pH-dependent charged polyelectrolyte poly(allylamine hydrochloride), PAH; and a PAH modified with guanidinium groups (PAH-Gu). Based on detailed surface characterizations (AFM, XPS and Zeta-potential) it was concluded that both charge density and pH-responsiveness of the polycations are key parameters to control the final membrane surface structure and transport properties. The surface properties of LbL-coated membranes were correlated with the membrane filtration performance, when exposed to the real leached sewage sludge ash solution. The highest permeability was recorded for (PDADMAC/PSS)6, a result that was rationalized on its loose, and possibly less interpenetrated, structure, followed by (PAH-Gu/PSS)6 characterized by a more dense, compact layer. H3PO4 recovery was the highest in the case of (PDADMAC/PSS)6, but the retention of multivalent metals (Fe3+ and Mg2+) was low, leading to a more contaminated permeate. The opposite trend was observed for (PAH-Gu/PSS)6, resulting in a less metal-contaminated, but also a less H3PO4-concentrated permeate. Our LbL-modified membranes were found to improve the permeability and H3PO4 recovery compared to a commercially available acid-resistant NF membrane.",
keywords = "Layer-by-layer, Phosphate recovery, Polyelectrolyte, Sewage sludge ash, Water treatment",
author = "Laura Paltrinieri and Kirsten Remmen and Barbara M{\"u}ller and Liangyong Chu and Joachim K{\"o}ser and Thomas Wintgens and Matthias Wessling and {de Smet}, {Louis C.P.M.} and Sudh{\"o}lter, {Ernst J.R.}",
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Paltrinieri, L, Remmen, K, Müller, B, Chu, L, Köser, J, Wintgens, T, Wessling, M, de Smet, LCPM & Sudhölter, EJR 2019, 'Improved phosphoric acid recovery from sewage sludge ash using layer-by-layer modified membranes', Journal of Membrane Science, vol. 587, 117162. https://doi.org/10.1016/j.memsci.2019.06.002

Improved phosphoric acid recovery from sewage sludge ash using layer-by-layer modified membranes. / Paltrinieri, Laura; Remmen, Kirsten; Müller, Barbara; Chu, Liangyong; Köser, Joachim; Wintgens, Thomas; Wessling, Matthias; de Smet, Louis C.P.M.; Sudhölter, Ernst J.R.

In: Journal of Membrane Science, Vol. 587, 117162, 01.10.2019.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Improved phosphoric acid recovery from sewage sludge ash using layer-by-layer modified membranes

AU - Paltrinieri, Laura

AU - Remmen, Kirsten

AU - Müller, Barbara

AU - Chu, Liangyong

AU - Köser, Joachim

AU - Wintgens, Thomas

AU - Wessling, Matthias

AU - de Smet, Louis C.P.M.

AU - Sudhölter, Ernst J.R.

PY - 2019/10/1

Y1 - 2019/10/1

N2 - We report an advanced treatment method for phosphoric acid recovery from leached sewage sludge ash. Layer-by-layer (LbL) polyelectrolyte deposition has been used as a tool to modify and convert a hollow ultrafiltration membrane into a nanofiltration (NF) LbL membrane for H3PO4 recovery. To build the LbL membrane, poly(styrenesulfonate) PSS was chosen as polyanion, while three different polycations were used: a permanently charged polyelectrolyte, poly(diallyldimethylammonium chloride), PDADMAC; a pH-dependent charged polyelectrolyte poly(allylamine hydrochloride), PAH; and a PAH modified with guanidinium groups (PAH-Gu). Based on detailed surface characterizations (AFM, XPS and Zeta-potential) it was concluded that both charge density and pH-responsiveness of the polycations are key parameters to control the final membrane surface structure and transport properties. The surface properties of LbL-coated membranes were correlated with the membrane filtration performance, when exposed to the real leached sewage sludge ash solution. The highest permeability was recorded for (PDADMAC/PSS)6, a result that was rationalized on its loose, and possibly less interpenetrated, structure, followed by (PAH-Gu/PSS)6 characterized by a more dense, compact layer. H3PO4 recovery was the highest in the case of (PDADMAC/PSS)6, but the retention of multivalent metals (Fe3+ and Mg2+) was low, leading to a more contaminated permeate. The opposite trend was observed for (PAH-Gu/PSS)6, resulting in a less metal-contaminated, but also a less H3PO4-concentrated permeate. Our LbL-modified membranes were found to improve the permeability and H3PO4 recovery compared to a commercially available acid-resistant NF membrane.

AB - We report an advanced treatment method for phosphoric acid recovery from leached sewage sludge ash. Layer-by-layer (LbL) polyelectrolyte deposition has been used as a tool to modify and convert a hollow ultrafiltration membrane into a nanofiltration (NF) LbL membrane for H3PO4 recovery. To build the LbL membrane, poly(styrenesulfonate) PSS was chosen as polyanion, while three different polycations were used: a permanently charged polyelectrolyte, poly(diallyldimethylammonium chloride), PDADMAC; a pH-dependent charged polyelectrolyte poly(allylamine hydrochloride), PAH; and a PAH modified with guanidinium groups (PAH-Gu). Based on detailed surface characterizations (AFM, XPS and Zeta-potential) it was concluded that both charge density and pH-responsiveness of the polycations are key parameters to control the final membrane surface structure and transport properties. The surface properties of LbL-coated membranes were correlated with the membrane filtration performance, when exposed to the real leached sewage sludge ash solution. The highest permeability was recorded for (PDADMAC/PSS)6, a result that was rationalized on its loose, and possibly less interpenetrated, structure, followed by (PAH-Gu/PSS)6 characterized by a more dense, compact layer. H3PO4 recovery was the highest in the case of (PDADMAC/PSS)6, but the retention of multivalent metals (Fe3+ and Mg2+) was low, leading to a more contaminated permeate. The opposite trend was observed for (PAH-Gu/PSS)6, resulting in a less metal-contaminated, but also a less H3PO4-concentrated permeate. Our LbL-modified membranes were found to improve the permeability and H3PO4 recovery compared to a commercially available acid-resistant NF membrane.

KW - Layer-by-layer

KW - Phosphate recovery

KW - Polyelectrolyte

KW - Sewage sludge ash

KW - Water treatment

U2 - 10.1016/j.memsci.2019.06.002

DO - 10.1016/j.memsci.2019.06.002

M3 - Article

VL - 587

JO - Journal of Membrane Science

JF - Journal of Membrane Science

SN - 0376-7388

M1 - 117162

ER -