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Evaluation and thermodynamic calculation of ureolytic magnesium ammonium phosphate precipitation from UASB effluent at pilot scale

Evelyn Desmidt UGent, K Ghyselbrecht, A Monballiu, Willy Verstraete UGent and BD Meesschaert (2012) WATER SCIENCE AND TECHNOLOGY. 65(11). p.1954-1962
abstract
The removal of phosphate as magnesium ammonium phosphate (MAP, struvite) has gained a lot of attention. A novel approach using ureolytic MAP crystallization (pH increase by means of bacterial ureases) has been tested on the anaerobic effluent of a potato processing company in a pilot plant and compared with NuReSys (R) technology (pH increase by means of NaOH). The pilot plant showed a high phosphate removal efficiency of 83 +/- 7%, resulting in a final effluent concentration of 13 +/- 7 mg . L-1 PO4-P. Calculating the evolution of the saturation index (SI) as a function of the remaining concentrations of Mg2+, PO4-P and NH4+ during precipitation in a batch reactor, resulted in a good estimation of the effluent PO4-P concentration of the pilot plant, operating under continuous mode. X-ray diffraction (XRD) analyses confirmed the presence of struvite in the small single crystals observed during experiments. The operational cost for the ureolytic MAP crystallization treating high phosphate concentrations (e.g. 100 mg . L-1 PO4-P) was calculated as 3.9 (sic) kg(-1) P-removed. This work shows that the ureolytic MAP crystallization, in combination with an autotrophic nitrogen removal process, is competitive with the NuReSys (R) technology in terms of operational cost and removal efficiency but further research is necessary to obtain larger crystals.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
nutrient recovery, phosphate removal, struvite, urease activity, PARTIAL NITRITATION/ANAMMOX, STRUVITE PRECIPITATION, REMOVING PHOSPHORUS, WASTE-WATER, CRYSTALLIZATION, RECOVERY, FERTILIZER, NITROGEN, REACTOR
journal title
WATER SCIENCE AND TECHNOLOGY
Water Sci. Technol.
volume
65
issue
11
pages
1954 - 1962
Web of Science type
Article
Web of Science id
000305374400007
JCR category
WATER RESOURCES
JCR impact factor
1.102 (2012)
JCR rank
44/80 (2012)
JCR quartile
3 (2012)
ISSN
0273-1223
DOI
10.2166/wst.2012.092
project
Biotechnology for a sustainable economy (Bio-Economy)
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
3047486
handle
http://hdl.handle.net/1854/LU-3047486
date created
2012-11-05 15:54:30
date last changed
2014-05-26 10:05:25
@article{3047486,
  abstract     = {The removal of phosphate as magnesium ammonium phosphate (MAP, struvite) has gained a lot of attention. A novel approach using ureolytic MAP crystallization (pH increase by means of bacterial ureases) has been tested on the anaerobic effluent of a potato processing company in a pilot plant and compared with NuReSys (R) technology (pH increase by means of NaOH). The pilot plant showed a high phosphate removal efficiency of 83 +/- 7\%, resulting in a final effluent concentration of 13 +/- 7 mg . L-1 PO4-P. Calculating the evolution of the saturation index (SI) as a function of the remaining concentrations of Mg2+, PO4-P and NH4+ during precipitation in a batch reactor, resulted in a good estimation of the effluent PO4-P concentration of the pilot plant, operating under continuous mode. X-ray diffraction (XRD) analyses confirmed the presence of struvite in the small single crystals observed during experiments. The operational cost for the ureolytic MAP crystallization treating high phosphate concentrations (e.g. 100 mg . L-1 PO4-P) was calculated as 3.9 (sic) kg(-1) P-removed. This work shows that the ureolytic MAP crystallization, in combination with an autotrophic nitrogen removal process, is competitive with the NuReSys (R) technology in terms of operational cost and removal efficiency but further research is necessary to obtain larger crystals.},
  author       = {Desmidt, Evelyn and Ghyselbrecht, K and Monballiu, A and Verstraete, Willy and Meesschaert, BD},
  issn         = {0273-1223},
  journal      = {WATER SCIENCE AND TECHNOLOGY},
  keyword      = {nutrient recovery,phosphate removal,struvite,urease activity,PARTIAL NITRITATION/ANAMMOX,STRUVITE PRECIPITATION,REMOVING PHOSPHORUS,WASTE-WATER,CRYSTALLIZATION,RECOVERY,FERTILIZER,NITROGEN,REACTOR},
  language     = {eng},
  number       = {11},
  pages        = {1954--1962},
  title        = {Evaluation and thermodynamic calculation of ureolytic magnesium ammonium phosphate precipitation from UASB effluent at pilot scale},
  url          = {http://dx.doi.org/10.2166/wst.2012.092},
  volume       = {65},
  year         = {2012},
}

Chicago
Desmidt, Evelyn, K Ghyselbrecht, A Monballiu, Willy Verstraete, and BD Meesschaert. 2012. “Evaluation and Thermodynamic Calculation of Ureolytic Magnesium Ammonium Phosphate Precipitation from UASB Effluent at Pilot Scale.” Water Science and Technology 65 (11): 1954–1962.
APA
Desmidt, E., Ghyselbrecht, K., Monballiu, A., Verstraete, W., & Meesschaert, B. (2012). Evaluation and thermodynamic calculation of ureolytic magnesium ammonium phosphate precipitation from UASB effluent at pilot scale. WATER SCIENCE AND TECHNOLOGY, 65(11), 1954–1962.
Vancouver
1.
Desmidt E, Ghyselbrecht K, Monballiu A, Verstraete W, Meesschaert B. Evaluation and thermodynamic calculation of ureolytic magnesium ammonium phosphate precipitation from UASB effluent at pilot scale. WATER SCIENCE AND TECHNOLOGY. 2012;65(11):1954–62.
MLA
Desmidt, Evelyn, K Ghyselbrecht, A Monballiu, et al. “Evaluation and Thermodynamic Calculation of Ureolytic Magnesium Ammonium Phosphate Precipitation from UASB Effluent at Pilot Scale.” WATER SCIENCE AND TECHNOLOGY 65.11 (2012): 1954–1962. Print.