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Nutrients Recovery from Dairy Wastewater by Struvite Precipitation Combined with Ammonium Sorption on Clinoptilolite
Struvite precipitation from Wastewater involves an excess of ammonium to create a supersaturated initial solution. The remaining fraction can be a threat to the environment. This work combined struvite precipitation and ammonium sorption using natural zeolite to decrease the ammonium level in the ef...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8510139/ https://www.ncbi.nlm.nih.gov/pubmed/34640218 http://dx.doi.org/10.3390/ma14195822 |
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author | Numviyimana, Claver Warchoł, Jolanta Ligas, Bartosz Chojnacka, Katarzyna |
author_facet | Numviyimana, Claver Warchoł, Jolanta Ligas, Bartosz Chojnacka, Katarzyna |
author_sort | Numviyimana, Claver |
collection | PubMed |
description | Struvite precipitation from Wastewater involves an excess of ammonium to create a supersaturated initial solution. The remaining fraction can be a threat to the environment. This work combined struvite precipitation and ammonium sorption using natural zeolite to decrease the ammonium level in the effluent. Two approaches of estimation of feed sample doses were used. One consisted of gradient experiments for ammonium precipitation to the asymptotic level and was combined with clinoptilolite to lower the ammonium level in the effluent. This approach used doses of 0.05:1.51:0.61:1 of Ca:Mg:NH(4)(+):PO(4)(3−) mole ratios, respectively. In contrast, three level design with narrowed NH(4)(+):PO(4)(3−) range reached 0.25:1.51:0.8:1 for Ca:Mg:NH(4)(+):PO(4)(3−) mole ratios. The addition of zeolite decreased effluent ammonium concentration. In both ways, the P and N recoveries were higher than 94% and 72%, respectively. The complexity of the precipitation mixture decreased the ammonium sorption capacity (Q(e)) of clinoptilolite from Q(e) of 0.52 to 0.10 meq∙g(−1) in single and complex solutions, respectively. Thermodynamically, the addition of 1.5 % of clinoptilolite changed the struvite precipitation spontaneity from ∆G of −5.87 to −5.42 kJ·mol(−1) and from 9.66 to 9.56 kJ·mol(−1) for gradient and three level experimental procedures, respectively. Thus, clinoptilolite demonstrated a positive effect on the struvite precipitation process and its environmental impact. |
format | Online Article Text |
id | pubmed-8510139 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-85101392021-10-13 Nutrients Recovery from Dairy Wastewater by Struvite Precipitation Combined with Ammonium Sorption on Clinoptilolite Numviyimana, Claver Warchoł, Jolanta Ligas, Bartosz Chojnacka, Katarzyna Materials (Basel) Article Struvite precipitation from Wastewater involves an excess of ammonium to create a supersaturated initial solution. The remaining fraction can be a threat to the environment. This work combined struvite precipitation and ammonium sorption using natural zeolite to decrease the ammonium level in the effluent. Two approaches of estimation of feed sample doses were used. One consisted of gradient experiments for ammonium precipitation to the asymptotic level and was combined with clinoptilolite to lower the ammonium level in the effluent. This approach used doses of 0.05:1.51:0.61:1 of Ca:Mg:NH(4)(+):PO(4)(3−) mole ratios, respectively. In contrast, three level design with narrowed NH(4)(+):PO(4)(3−) range reached 0.25:1.51:0.8:1 for Ca:Mg:NH(4)(+):PO(4)(3−) mole ratios. The addition of zeolite decreased effluent ammonium concentration. In both ways, the P and N recoveries were higher than 94% and 72%, respectively. The complexity of the precipitation mixture decreased the ammonium sorption capacity (Q(e)) of clinoptilolite from Q(e) of 0.52 to 0.10 meq∙g(−1) in single and complex solutions, respectively. Thermodynamically, the addition of 1.5 % of clinoptilolite changed the struvite precipitation spontaneity from ∆G of −5.87 to −5.42 kJ·mol(−1) and from 9.66 to 9.56 kJ·mol(−1) for gradient and three level experimental procedures, respectively. Thus, clinoptilolite demonstrated a positive effect on the struvite precipitation process and its environmental impact. MDPI 2021-10-05 /pmc/articles/PMC8510139/ /pubmed/34640218 http://dx.doi.org/10.3390/ma14195822 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Numviyimana, Claver Warchoł, Jolanta Ligas, Bartosz Chojnacka, Katarzyna Nutrients Recovery from Dairy Wastewater by Struvite Precipitation Combined with Ammonium Sorption on Clinoptilolite |
title | Nutrients Recovery from Dairy Wastewater by Struvite Precipitation Combined with Ammonium Sorption on Clinoptilolite |
title_full | Nutrients Recovery from Dairy Wastewater by Struvite Precipitation Combined with Ammonium Sorption on Clinoptilolite |
title_fullStr | Nutrients Recovery from Dairy Wastewater by Struvite Precipitation Combined with Ammonium Sorption on Clinoptilolite |
title_full_unstemmed | Nutrients Recovery from Dairy Wastewater by Struvite Precipitation Combined with Ammonium Sorption on Clinoptilolite |
title_short | Nutrients Recovery from Dairy Wastewater by Struvite Precipitation Combined with Ammonium Sorption on Clinoptilolite |
title_sort | nutrients recovery from dairy wastewater by struvite precipitation combined with ammonium sorption on clinoptilolite |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8510139/ https://www.ncbi.nlm.nih.gov/pubmed/34640218 http://dx.doi.org/10.3390/ma14195822 |
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