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Moving towards sustainable resources: Recovery and fractionation of nutrients from dairy manure digestate using membranes

Michael L. Gerardo, Nasser H.M. Aljohani, Darren Oatley-Radcliffe Orcid Logo, Robert Lovitt

Water Research, Volume: 80, Pages: 80 - 89

Swansea University Authors: Darren Oatley-Radcliffe Orcid Logo, Robert Lovitt

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DOI (Published version): 10.1016/j.watres.2015.05.016

Abstract

The fractionation of nitrogen (as ammonia/ammonium) and phosphorus (as phosphate ions) present in the dairy manure digestate was investigated using a nanofiltration membrane NF270. The filtration and separation efficiencies were correlated to pH across the range 3 < pH < 11. Filtrati...

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Published in: Water Research
ISSN: 0043-1354
Published: 2015
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URI: https://cronfa.swan.ac.uk/Record/cronfa21477
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spelling 2020-12-18T10:59:17.6359484 v2 21477 2015-05-18 Moving towards sustainable resources: Recovery and fractionation of nutrients from dairy manure digestate using membranes 6dfb5ec2932455c778a5aa168c18cffd 0000-0003-4116-723X Darren Oatley-Radcliffe Darren Oatley-Radcliffe true false 130c3c35f45826bb0f4836305e8e51c7 Robert Lovitt Robert Lovitt true false 2015-05-18 CHEG The fractionation of nitrogen (as ammonia/ammonium) and phosphorus (as phosphate ions) present in the dairy manure digestate was investigated using a nanofiltration membrane NF270. The filtration and separation efficiencies were correlated to pH across the range 3 &#60; pH &#60; 11. Filtration at pH 11 enabled higher permeate flux of 125–150 LMH at 20 bar, however rejection of ammonia was high at 30–36% and phosphate was 96.4–97.2%. At pH 3 and pH 7, electrostatic charge effects led to higher permeation of ammonium and thus more efficient separation of nitrogen. The rejection of phosphorus was relatively constant at any given pH and determined as 83% at pH 3, 97% at pH 7 and 95% at pH 11. The fractionation of nitrogen and phosphorus from complex aqueous solutions was demonstrated to be highly dependent on the charge of the membrane and ionic speciation. Solutions rich in nitrogen (as ammonia/ammonium) were obtained with almost no phosphorus present (&#60;1 ppm) whilst the purification of the PO4–P was achieved by series of diafiltration (DF) operations which further separated the nitrogen. The separation of nutrients benefited from an advantageous membrane process with potential added value for a wide range of industries. The analysis of the process economics for a membrane based plant illustrates that the recovery of nutrients, particularly NH3–N, may be commercially feasible when compared to manufactured anhydrous NH3. Journal Article Water Research 80 80 89 0043-1354 1 9 2015 2015-09-01 10.1016/j.watres.2015.05.016 COLLEGE NANME Chemical Engineering COLLEGE CODE CHEG Swansea University 2020-12-18T10:59:17.6359484 2015-05-18T08:38:23.8334325 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised Michael L. Gerardo 1 Nasser H.M. Aljohani 2 Darren Oatley-Radcliffe 0000-0003-4116-723X 3 Robert Lovitt 4 0021477-11022016130314.pdf OatleyLovittMovingtowardssustainableresources2015Postprint.pdf 2016-02-11T13:03:14.7730000 Output 1505569 application/pdf Accepted Manuscript true 2016-02-11T00:00:00.0000000 true
title Moving towards sustainable resources: Recovery and fractionation of nutrients from dairy manure digestate using membranes
spellingShingle Moving towards sustainable resources: Recovery and fractionation of nutrients from dairy manure digestate using membranes
Darren Oatley-Radcliffe
Robert Lovitt
title_short Moving towards sustainable resources: Recovery and fractionation of nutrients from dairy manure digestate using membranes
title_full Moving towards sustainable resources: Recovery and fractionation of nutrients from dairy manure digestate using membranes
title_fullStr Moving towards sustainable resources: Recovery and fractionation of nutrients from dairy manure digestate using membranes
title_full_unstemmed Moving towards sustainable resources: Recovery and fractionation of nutrients from dairy manure digestate using membranes
title_sort Moving towards sustainable resources: Recovery and fractionation of nutrients from dairy manure digestate using membranes
author_id_str_mv 6dfb5ec2932455c778a5aa168c18cffd
130c3c35f45826bb0f4836305e8e51c7
author_id_fullname_str_mv 6dfb5ec2932455c778a5aa168c18cffd_***_Darren Oatley-Radcliffe
130c3c35f45826bb0f4836305e8e51c7_***_Robert Lovitt
author Darren Oatley-Radcliffe
Robert Lovitt
author2 Michael L. Gerardo
Nasser H.M. Aljohani
Darren Oatley-Radcliffe
Robert Lovitt
format Journal article
container_title Water Research
container_volume 80
container_start_page 80
publishDate 2015
institution Swansea University
issn 0043-1354
doi_str_mv 10.1016/j.watres.2015.05.016
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Uncategorised{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Uncategorised
document_store_str 1
active_str 0
description The fractionation of nitrogen (as ammonia/ammonium) and phosphorus (as phosphate ions) present in the dairy manure digestate was investigated using a nanofiltration membrane NF270. The filtration and separation efficiencies were correlated to pH across the range 3 &#60; pH &#60; 11. Filtration at pH 11 enabled higher permeate flux of 125–150 LMH at 20 bar, however rejection of ammonia was high at 30–36% and phosphate was 96.4–97.2%. At pH 3 and pH 7, electrostatic charge effects led to higher permeation of ammonium and thus more efficient separation of nitrogen. The rejection of phosphorus was relatively constant at any given pH and determined as 83% at pH 3, 97% at pH 7 and 95% at pH 11. The fractionation of nitrogen and phosphorus from complex aqueous solutions was demonstrated to be highly dependent on the charge of the membrane and ionic speciation. Solutions rich in nitrogen (as ammonia/ammonium) were obtained with almost no phosphorus present (&#60;1 ppm) whilst the purification of the PO4–P was achieved by series of diafiltration (DF) operations which further separated the nitrogen. The separation of nutrients benefited from an advantageous membrane process with potential added value for a wide range of industries. The analysis of the process economics for a membrane based plant illustrates that the recovery of nutrients, particularly NH3–N, may be commercially feasible when compared to manufactured anhydrous NH3.
published_date 2015-09-01T03:25:29Z
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score 11.013731

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