Project #4899

Comparative Life Cycle Assessment Of Urine Derived Fertilizer

Principal Investigator
Research Manager
Mr. Walter L Graf, Jr.
University of Michigan
Resource Recovery
Endocrine Disrupting Compounds, Pharmaceuticals & Personal Care Products (EDCs & PPCPs)


This research developed an Excel-based tool to assess the environmental benefits of urine diversion and conversion to useful products (e.g., fertilizer) on a citywide basis to compare them to conventional wastewater management approaches. Using life cycle analysis, the tool considers several types of urine-derived fertilizers, models how urine diversion affects the wastewater treatment system, and includes the environmental benefits of reduced conventional fertilizer production. The tool’s flexibility allows users to input parameters related to water, wastewater, electricity production, and more. It is intended to be used as a first screening approach to assess the relative environmental impacts of these systems. Published by WRF. 96 pages. Online PDF. (2018)

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Originally funded as WERF project STAR_N1aR14T.