{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/108630"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/108630","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Defining nutrient co-location typologies for human-derived supply and crop demands to advance resource recovery","abstract":"Resource recovery from human excreta can advance circular economies while improving access to sanitation and renewable agricultural inputs. Proximity between human-derived nutrient supply and crop nutrient demands influence how nutrients are recovered in order to be a competitive alternative to synthetic fertilizers. For 107 countries, we analyze the co-location of human-derived nutrients and crop demands for nitrogen, phosphorus, and potassium. To characterize co-location patterns, we fit data for each country to a generalized logistic function. We identified three typologies: (i) dislocated nutrient production and demand resulting from high density agriculture (with low population density) and nutrient islands (e.g., high density cities) requiring nutrient concentration and transport; (ii) co-located nutrient production and demand enabling local reuse; and (iii) countries spanning the continuum between these two extremes. Finally, we explored connections between these typologies and country-specific contextual characteristics via principal component analysis (PCA) and found the human development index (HDI) was a strong indicator of the country’s affiliated typology based on its nutrient landscape. By providing a generalizable, quantitative framework for characterizing the co-location of excreted nutrients and agricultural needs, these typologies can advance resource recovery by informing resource recovery strategies, investment, and enabling policies.","abstract_html":"Resource recovery from human excreta can advance circular economies while improving access to sanitation and renewable agricultural inputs. Proximity between human-derived nutrient supply and crop nutrient demands influence how nutrients are recovered in order to be a competitive alternative to synthetic fertilizers. For 107 countries, we analyze the co-location of human-derived nutrients and crop demands for nitrogen, phosphorus, and potassium. To characterize co-location patterns, we fit data for each country to a generalized logistic function. We identified three typologies: (i) dislocated nutrient production and demand resulting from high density agriculture (with low population density) and nutrient islands (e.g., high density cities) requiring nutrient concentration and transport; (ii) co-located nutrient production and demand enabling local reuse; and (iii) countries spanning the continuum between these two extremes. Finally, we explored connections between these typologies and country-specific contextual characteristics via principal component analysis (PCA) and found the human development index (HDI) was a strong indicator of the country’s affiliated typology based on its nutrient landscape. By providing a generalizable, quantitative framework for characterizing the co-location of excreted nutrients and agricultural needs, these typologies can advance resource recovery by informing resource recovery strategies, investment, and enabling policies.","abstract_has_math":false,"creators":["Echevarria, Desarae Monique"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"M.S.","degree_level":"Thesis","degree_discipline":"Environ Engr in Civil Engr","degree_department":null,"school":null,"contributors":["Guest, Jeremy S"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2020,"date_issued":"2020-10-07T22:44:42Z","date_published":"2020-10-07T22:44:42Z","updated_at":"2026-07-22T22:24:48Z","subjects":["Fertilizer","Co-location","Sanitation","Agriculture"],"languages":["en"],"rights":["Copyright 2020 Desarae M. 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We identified three typologies: (i) dislocated nutrient production and demand resulting from high density agriculture (with low population density) and nutrient islands (e.g., high density cities) requiring nutrient concentration and transport; (ii) co-located nutrient production and demand enabling local reuse; and (iii) countries spanning the continuum between these two extremes. Finally, we explored connections between these typologies and country-specific contextual characteristics via principal component analysis (PCA) and found the human development index (HDI) was a strong indicator of the country’s affiliated typology based on its nutrient landscape. By providing a generalizable, quantitative framework for characterizing the co-location of excreted nutrients and agricultural needs, these typologies can advance resource recovery by informing resource recovery strategies, investment, and enabling policies.","Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2022-08-01","The student, Desarae Echevarria, accepted the attached license on 2020-07-20 at 15:57.","The student, Desarae Echevarria, submitted this Thesis for approval on 2020-07-20 at 16:18.","This Thesis was approved for publication on 2020-07-21 at 11:15.","DSpace SAF Submission Ingestion Package generated from Vireo submission #15699 on 2020-10-02 at 15:33:57","Made available in DSpace on 2020-10-07T22:44:42Z (GMT). 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Proximity between human-derived nutrient supply and crop nutrient demands influence how nutrients are recovered in order to be a competitive alternative to synthetic fertilizers. For 107 countries, we analyze the co-location of human-derived nutrients and crop demands for nitrogen, phosphorus, and potassium. To characterize co-location patterns, we fit data for each country to a generalized logistic function. We identified three typologies: (i) dislocated nutrient production and demand resulting from high density agriculture (with low population density) and nutrient islands (e.g., high density cities) requiring nutrient concentration and transport; (ii) co-located nutrient production and demand enabling local reuse; and (iii) countries spanning the continuum between these two extremes. Finally, we explored connections between these typologies and country-specific contextual characteristics via principal component analysis (PCA) and found the human development index (HDI) was a strong indicator of the country’s affiliated typology based on its nutrient landscape. By providing a generalizable, quantitative framework for characterizing the co-location of excreted nutrients and agricultural needs, these typologies can advance resource recovery by informing resource recovery strategies, investment, and enabling policies.","Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2022-08-01","The student, Desarae Echevarria, accepted the attached license on 2020-07-20 at 15:57.","The student, Desarae Echevarria, submitted this Thesis for approval on 2020-07-20 at 16:18.","This Thesis was approved for publication on 2020-07-21 at 11:15.","DSpace SAF Submission Ingestion Package generated from Vireo submission #15699 on 2020-10-02 at 15:33:57","Made available in DSpace on 2020-10-07T22:44:42Z (GMT). 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