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Nitrogen and Phosphorus Removal from Urine by Sequential Struvite Formation and Recycling Process

Latifian, Maryam LU ; Holst, Olle LU and Liu, Jing LU (2014) In Clean - Soil, Air, Water 42(8). p.1157-1161
Abstract
Recovering nutrients from urine as solid minerals such as struvite can eliminate many hurdles related to the use of liquid urine as fertilizer in the current urine separation systems. The focus of this study has been to increase nitrogen and phosphorus removal efficiencies by developing a struvite formation and recycling process. Struvite crystallization was carried out in urine samples by addition of MgO where 92% of phosphorus as orthophosphate was recovered. In order to optimize the use of calcined struvite in the struvite recycling step, four calcination treatments were tested and calcination at 200 degrees C for 3 h was chosen for further experiments. To remove the remaining ammonia present in urine a struvite recycling step was used... (More)
Recovering nutrients from urine as solid minerals such as struvite can eliminate many hurdles related to the use of liquid urine as fertilizer in the current urine separation systems. The focus of this study has been to increase nitrogen and phosphorus removal efficiencies by developing a struvite formation and recycling process. Struvite crystallization was carried out in urine samples by addition of MgO where 92% of phosphorus as orthophosphate was recovered. In order to optimize the use of calcined struvite in the struvite recycling step, four calcination treatments were tested and calcination at 200 degrees C for 3 h was chosen for further experiments. To remove the remaining ammonia present in urine a struvite recycling step was used subsequently. Through sequential struvite formation and struvite recycling process up to 90% of ammonium nitrogen was successfully removed. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Calcination, Nutrient recovery, Wastewater treatment
in
Clean - Soil, Air, Water
volume
42
issue
8
pages
1157 - 1161
publisher
Wiley-Blackwell
external identifiers
  • wos:000342339600019
  • scopus:84905653344
ISSN
1863-0650
DOI
10.1002/clen.201300070
language
English
LU publication?
yes
id
2d29801e-ecde-47b3-924b-d05166a34161 (old id 4810195)
date added to LUP
2014-11-25 15:21:49
date last changed
2017-11-12 03:06:00
@article{2d29801e-ecde-47b3-924b-d05166a34161,
  abstract     = {Recovering nutrients from urine as solid minerals such as struvite can eliminate many hurdles related to the use of liquid urine as fertilizer in the current urine separation systems. The focus of this study has been to increase nitrogen and phosphorus removal efficiencies by developing a struvite formation and recycling process. Struvite crystallization was carried out in urine samples by addition of MgO where 92% of phosphorus as orthophosphate was recovered. In order to optimize the use of calcined struvite in the struvite recycling step, four calcination treatments were tested and calcination at 200 degrees C for 3 h was chosen for further experiments. To remove the remaining ammonia present in urine a struvite recycling step was used subsequently. Through sequential struvite formation and struvite recycling process up to 90% of ammonium nitrogen was successfully removed.},
  author       = {Latifian, Maryam and Holst, Olle and Liu, Jing},
  issn         = {1863-0650},
  keyword      = {Calcination,Nutrient recovery,Wastewater treatment},
  language     = {eng},
  number       = {8},
  pages        = {1157--1161},
  publisher    = {Wiley-Blackwell},
  series       = {Clean - Soil, Air, Water},
  title        = {Nitrogen and Phosphorus Removal from Urine by Sequential Struvite Formation and Recycling Process},
  url          = {http://dx.doi.org/10.1002/clen.201300070},
  volume       = {42},
  year         = {2014},
}