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Resources recovery from high-strength human waste anaerobic digestate using simple nitrification and denitrification filters

Simple trickling nitrification filters and submerged denitrification filters were developed to provide post-treatment to high-strength human waste anaerobic digestate with the aims to (i) effectively recover nutrients in a useful form as a fertilizer and to (ii) treat digestate such that it could be...

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Detalles Bibliográficos
Autores principales: Hunter, Brandon, Deshusses, Marc A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7014583/
https://www.ncbi.nlm.nih.gov/pubmed/31801654
http://dx.doi.org/10.1016/j.scitotenv.2019.135509
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author Hunter, Brandon
Deshusses, Marc A.
author_facet Hunter, Brandon
Deshusses, Marc A.
author_sort Hunter, Brandon
collection PubMed
description Simple trickling nitrification filters and submerged denitrification filters were developed to provide post-treatment to high-strength human waste anaerobic digestate with the aims to (i) effectively recover nutrients in a useful form as a fertilizer and to (ii) treat digestate such that it could be reused as flush water in water scarce regions. The tested filter media (biochar, granular activated carbon, rice and coconut husks, bamboo chips, sunflower seeds, and zeolite) are low cost and sustainable materials and can be locally sourced where on-site sanitation facilities are in high demand. Experimental data from laboratory operation with digestate from anaerobic digestion of dog feces and human urine revealed that the filters achieved a combined removal of chemical oxygen demand (COD), total nitrogen (TN), and phosphorus (PO(4)-P) up to 84%, 69%, and 89%, respectively. Post-treatment filters have also demonstrated successful recovery of vital nutrients by precipitating ammonium magnesium phosphate hydrate, a documented valuable slow-release solid fertilizer. These filters have a great potential for advancing access to improved sanitation while simultaneously increasing capacity for small-scale economic agricultural development in geographic regions lacking improved sanitation.
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spelling pubmed-70145832020-04-10 Resources recovery from high-strength human waste anaerobic digestate using simple nitrification and denitrification filters Hunter, Brandon Deshusses, Marc A. Sci Total Environ Article Simple trickling nitrification filters and submerged denitrification filters were developed to provide post-treatment to high-strength human waste anaerobic digestate with the aims to (i) effectively recover nutrients in a useful form as a fertilizer and to (ii) treat digestate such that it could be reused as flush water in water scarce regions. The tested filter media (biochar, granular activated carbon, rice and coconut husks, bamboo chips, sunflower seeds, and zeolite) are low cost and sustainable materials and can be locally sourced where on-site sanitation facilities are in high demand. Experimental data from laboratory operation with digestate from anaerobic digestion of dog feces and human urine revealed that the filters achieved a combined removal of chemical oxygen demand (COD), total nitrogen (TN), and phosphorus (PO(4)-P) up to 84%, 69%, and 89%, respectively. Post-treatment filters have also demonstrated successful recovery of vital nutrients by precipitating ammonium magnesium phosphate hydrate, a documented valuable slow-release solid fertilizer. These filters have a great potential for advancing access to improved sanitation while simultaneously increasing capacity for small-scale economic agricultural development in geographic regions lacking improved sanitation. Elsevier 2020-04-10 /pmc/articles/PMC7014583/ /pubmed/31801654 http://dx.doi.org/10.1016/j.scitotenv.2019.135509 Text en © 2019 The Authors http://creativecommons.org/licenses/by/4.0/ This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Hunter, Brandon
Deshusses, Marc A.
Resources recovery from high-strength human waste anaerobic digestate using simple nitrification and denitrification filters
title Resources recovery from high-strength human waste anaerobic digestate using simple nitrification and denitrification filters
title_full Resources recovery from high-strength human waste anaerobic digestate using simple nitrification and denitrification filters
title_fullStr Resources recovery from high-strength human waste anaerobic digestate using simple nitrification and denitrification filters
title_full_unstemmed Resources recovery from high-strength human waste anaerobic digestate using simple nitrification and denitrification filters
title_short Resources recovery from high-strength human waste anaerobic digestate using simple nitrification and denitrification filters
title_sort resources recovery from high-strength human waste anaerobic digestate using simple nitrification and denitrification filters
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7014583/
https://www.ncbi.nlm.nih.gov/pubmed/31801654
http://dx.doi.org/10.1016/j.scitotenv.2019.135509
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