Urban Environmental Management master student, Rosanne Wielemaker, won the Rachel Carson Environmental Thesis Award 2015 for her thesis about the recovery of nutrients from domestic wastewater for reuse as fertilizer in urban agriculture. She is the second MUE student to win this prize. Our congratulations to Rosanne for this great achievement!
In her thesis research Rosanne investigated the extent to which domestic wastewater can be used as fertilizer in urban agriculture. Her research focussed specifically on source-separated domestic wastewater in which different wastewater streams such as black water (toilet wastewater), yellow water (urine) and kitchen waste are separately collected and treated for the recovery of nutrients. Using the Urban Harvest Approach, developed at Wageningen University for the urban water cycle, Rosanne sets out to match the demand for fertilizer from urban agriculture with the supply of recovered nutrients from the treatment systems. Rosanne shows in her thesis that the application of source-separated domestic wastewater in urban agriculture can contribute to closing urban nutrient cycles and lead to increased self-sufficiency of cities.
Currently Rosanne continues her research at Wageningen University as a PhD researcher to further explore the potential of integrating source-separated domestic wastewater and urban agriculture.