Layered double hydroxide ion exchangers on superparamagnetic microparticles for recovery of phosphate from waste water
Mandel K, Drenkova-Tuhtan A, Hutter F, Gellermann C, Steinmetz H, Sextl G (2013)
Publication Type: Journal article
Publication year: 2013
Journal
Book Volume: 1
Pages Range: 1840-1848
Journal Issue: 5
DOI: 10.1039/c2ta00571a
Abstract
Superparamagnetic microparticles modified with an ion exchange system are reported for the recovery of phosphate from waste water by a magnetic separation technique. Layered double hydroxides (LDH), anionic clays, are precipitated from an aqueous solution and deposited by an ultrasonic treatment on superparamagnetic microparticles consisting of Fe3O4 multicores embedded in a SiO2 matrix. Deposition can be conducted in a batch process as well as in a continuous way, using an ultrasonic flow cell. The obtained composite particles show good magnetic separability and have a specific surface area of around 100 m2 g-1. Zr doped LDH shows improved phosphate adsorption in waste water. After magnetic separation and regeneration, the composite particles are re-used which is demonstrated for four cycles. Phosphate ions are concentrated in the regeneration solution. Simple, low cost, and a fast continuous synthesis of the composite particles paves the way for application beyond lab scale in real waste water treatment plants. © 2013 The Royal Society of Chemistry.
Authors with CRIS profile
Involved external institutions
Germany (DE)How to cite
APA:
Mandel, K., Drenkova-Tuhtan, A., Hutter, F., Gellermann, C., Steinmetz, H., & Sextl, G. (2013). Layered double hydroxide ion exchangers on superparamagnetic microparticles for recovery of phosphate from waste water. Journal of Materials Chemistry A, 1(5), 1840-1848. https://dx.doi.org/10.1039/c2ta00571a
MLA:
Mandel, Karl, et al. "Layered double hydroxide ion exchangers on superparamagnetic microparticles for recovery of phosphate from waste water." Journal of Materials Chemistry A 1.5 (2013): 1840-1848.
BibTeX: Download