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Robin Harder

Robin Harder
Robin aspires to contribute to a world in which nutrients are recirculated from human excreta and other organic residuals to agriculture in a way the supports healthy water, soil, food, and people.


Robin has a background in sanitary engineering and environmental systems analysis, and a keen interest in food and farming systems. His current interest lies with applying a systems perspective to recirculating nutrients and carbon from human excreta to productive agriculture.


To achieve more comprehensive nutrient recovery and reuse, I believe it is crucial that we see human excreta management as part of food and farming systems rather than as part of waste management. This premise underpins much of my research as environmental systems analyst.

I am currently involved in the following projects:

- End-of-wastewater: Co-creation of a knowledge brokering and public engagement toolbox to support sustainable nutrient and carbon recovery and reuse.

Selected publications

Macura B, Thomas J, Metson GS, McConville JR, Johannesdottir SL, Seddon D, Harder R. Technologies for recovery and reuse of plant nutrients from human excreta and domestic wastewater: a protocol for a systematic map and living evidence platform
Environmental Evidence, DOI: 10.1186/s13750-021-00235-x.

Harder R, Mullinix K, Smukler S (2021). Assessing the circularity of nutrient flows across nested scales for four food system scenarios in the Okanagan bioregion, BC Canada. Frontiers in Sustainable Food Systems, DOI: 10.3389/fsufs.2021.661870.

Harder R, Giampietro M, Mullinix K, Smukler S (2021). Assessing the circularity of nutrient flows related to the food system in the Okanagan bioregion, BC Canada. Resources, Conservation & Recycling, DOI: 10.1016/j.resconrec.2021.105842.

Harder R, Giampietro M, Smukler S (2021). Towards a circular nutrient economy. A novel way to analyze the circularity of nutrient flows in food systems. Resources, Conservation & Recycling, DOI: 10.1016/j.resconrec.2021.105693.

Lorick D, Harder R, Svanström M (2021). A Circular Economy for Phosphorus in Sweden—Is It Possible? Sustainability, DOI: 10.3390/su13073733.

Lorick D, Macura B, Ahlström M, Grimvall A, Harder R (2020). Effectiveness of struvite precipitation and ammonia stripping for recovery of phosphorus and nitrogen from anaerobic digestate: a systematic review. Environmental Evidence, DOI: 10.1186/s13750-020-00211-x.

Franco-Torres M, Rogers BC, Harder R (2020). Articulating the new urban water paradigm. Critical Reviews in Environmental Science and Technology, DOI: 10.1080/10643389.2020.1803686.

Harder R, Wielemaker R, Molander S, Öberg G. (2020). Reframing human excreta management as part of food and farming systems. Water Research, DOI: 10.1016/j.watres.2020.115601.

Harder R, Wielemaker R, Larsen TA, Zeeman G, Öberg G. (2019). Recycling nutrients contained in human excreta to agriculture: Pathways, processes, and products. Critical Reviews in Environmental Science and Technology, DOI: 10.1080/10643389.2018.1558889.

A complete list of publications can be found on ORCID.


Non employee at the Department of Energy and Technology; Environmental Engineering Unit
Postal address:
Inst för energi och teknik, Box 7032
Visiting address: Lennart Hjelms väg 9, Uppsala