S.V. Hanssen

Foto Steef_Hanssen2

S.V. Hanssen MSc (Steef)
PhD student

Department of Environmental Science
Faculty of Science
Radboud University Nijmegen

Email: S.Hanssen@science.ru.nl
Telephone: +31-(0)24-3652060
Postal address: P.O. Box 9010 (box 89), 6500 GL Nijmegen,The Netherlands

Visiting address
Huygens building, room 02.628, Heyendaalseweg 135, 6525 ED Nijmegen, The Netherlands

Curriculum Vitae
Born in Nijmegen, Steef graduated in Biology from the University of Amsterdam  (cum laude, BSc, 2013) and in Energy Science from Utrecht University (cum laude, MSc, 2015). His master thesis research concerned the greenhouse gas balance of wood pellets (a type of solid biofuel) from the United States that are co-fired in European power plants. Previous experience includes research on the use of plants to protect ruins performed at the University of Oxford, and dynamic modelling of fish populations and their maximum sustainable yield as part of his bachelor thesis. Steef’s overarching interest is to come up with clever ways to protect and work with nature and the environment, while meeting society’s demands. He started his PhD at Radboud University in February 2016.

PhD project
In his PhD Steef investigates the climate change mitigation potential of second-generation bioenergy, specifically electricity and liquid transport fuels from purpose-grown or residual woody and grassy biomass. The first phase of his PhD research (2016-2018) focuses on determining potential climate benefits of different combinations of feedstocks and final energy carriers, while also considering spatial variation in biomass yields and carbon stocks, previous land-uses, and the option of combining bioenergy with carbon capture and storage (CCS). Climate benefits are assessed by constructing greenhouse gas (GHG) and radiative forcing (RF) balances of bioenergy over time. Based on these balances two main metrics are considered: 1) payback times, i.e., the period of time until replacing fossil fuels with bioenergy starts yielding climate benefits; and 2) the climate benefits per amount of energy produced, over a fixed time period. GHG and RF balances include: land use-change related GHG emissions, bioenergy life-cycle GHG emissions, biogenic carbon sequestration and emission, N2O mineralisation emissions, belowground carbon dynamics, carbon captured in CCS, as well as life-cycle emissions of replaced fossil energy carriers. The second phase of Steef’s PhD research (2018-2019) will also include biodiversity and economic aspects of bioenergy production, and their potential trade-offs and synergies with climate change mitigation.

Last update: 26th of June 2017