- Sustainability Scientist, Global Institute of Sustainability and Innovation
- Associate Professor, School of Sustainable Engineering and the Built Environment, Ira A. Fulton Schools of Engineering
- Associate Professor, Center for Bio-mediated and Bio-inspired Geotechnics
Leon van Paassen is an associate professor at Arizona State University and senior investigator at the NSF Engineering Research Centre for Bio-mediated and Bio-inspired Geotechnics. He received an MSc in applied earth sciences in 2002 from Delft University of Technology with a specialisation in engineering geology. During and after his graduation he worked several years as a geotechnical engineering consultant at IFCO Foundation Expertise and at research institute Deltares. In 2009 he obtained his PhD from the Department of Biotechnology of Delft University of Technology. His PhD research on "Biogrout, Microbially induced carbonate precipitation as ground improvement method" resulted in several publications, patents and was awarded with several national and international awards. In his current research he integrates the fields of environmental biotechnology and geotechnical engineering. He investigates how natural or human-induced biochemical processes affect soil behaviour and aims to develop sustainable solutions, which improve efficient use of resources and energy and reduce the environmental impact of civil and mining engineering industry.
- PhD, Applied Sciences, Environmental Biotechnology, Delft University of Technology, 2009
- MSc, Applied Earth Sciences, Engineering Geology, Delft University of Technology, 2002
- Gymnasium, St Stanislas College
Phem, V. P., A. Nakano, W. R. van der Star, T. J. Heimovaara and L. A. van Paassen. 2018. No AccessApplying MICP by denitrification in soils: a process analysis. Environmental Geotechnics 5(2):79-83. DOI: 10.1680/jenge.15.00078. (link )
Tollenaar, R. N., L. A. van Paassen and C. Jommi. 2018. Small-scale evaporation tests on clay: influence of drying rate on clayey soil layer. Canadian Geotechnical Journal 55(3):437-445. DOI: 10.1139/cgj-2017-0061. (link )
Oliveira, B. R., M. P. Smit, L. A. van Paassen, T. C. Grotenhuis and H. H. Rijnaarts. 2017. Functional properties of soils formed from biochemical ripening of dredged sediments—subsidence mitigation in delta areas. Journal of Soils and Sediments 17:286-298. DOI: 10.1007/s11368-016-1570-7. (link )
Tollenaar, R. N., L. A. van Paassen and C. Jommi. 2017. Experimental evaluation of the effects of pull rate on the tensile behavior of a clay. Applied Clay Science 144(Aug):131-140. DOI: 10.1016/j.clay.2017.04.026. (link )
Tollenaar, R. N., L. A. van Paassen and C. Jommi. 2017. Observations on the desiccation and cracking of clay layers. Engineering Geology 230(Nov):23-31. DOI: 10.1016/j.enggeo.2017.08.022. (link )
van Wijngaarden, W. K., L. A. van Paassen, F. J. Vermolen, G. A. van Meurs and C. Vuik. 2016. Simulation of front instabilities in density-driven flow, using a reactive transport model for biogrout combined with a randomly distributed permeability field. Transport in Porous Media 112:333-369. DOI: 10.1007/s11242-016-0649-3. (link )
van Wijngaarden, W. K., L. A. van Paassen, F. J. Vermolen, G. A. van Meurs and C. Vuik. 2015. A reactive transport model for biogrout compared to experimental data. Transport in Porous Media 111:627-648. DOI: 10.1007/s11242-015-0615-5. (link )
Kanayama, M., A. Rohe and L. A. van Paassen. 2014. Using and improving neural network models for ground settlement prediction. Geotechical and Geological Engineering 32:687-697. DOI: 10.1007/s10706-014-9745-8. (link )
Dejong, J. T., K. Soga, E. Kavazanjian, S. Burns, L. A. van Paassen, A. Al Qabany, A. Aydilek, S. S. Bang, M. Burbank, L. F. Caslake, C. Y. Chen, X. Cheng, J. Chu, S. Ciurli, A. Esnault-Filet, S. Fauriel, N. Hamdan, T. Hata, Y. Inagaki, S. Jefferis, M. Kuo, L. Laloui, J. Larrahondo, D. A. Manning, B. Martinez, B. M. Montoya, D. C. Nelson, A. Palomino, P. Renforth, J. C. Santamarina, E. A. Seagren, B. Tanyu, M. Tsesarsky and T. Weaver. 2013. Biogeochemical processes and geotechnical applications: progress, opportunities and challenges. Géotechnique 63(4):287-301. DOI: 10.1680/geot.SIP13.P.017. (link )
Harkes, M. P., L. A. van Paassen, J. L. Booster, V. S. Whiffen and M. C. van Loosdrecht. 2010. Fixation and distribution of bacterial activity in sand to induce carbonate precipitation for ground reinforcement. Ecological Engineering 36(2):112-117. DOI: 10.1016/j.ecoleng.2009.01.004. (link )
van Paassen, L. A., C. M. Daza, M. Staal, D. Y. Sorokin, W. van der Zon and M. C. van Loosdrecht. 2010. Potential soil reinforcement by biological denitrification. Ecological Engineering 36(2):168-175. DOI: 10.1016/j.ecoleng.2009.03.026. (link )
van Paassen, L. A., R. Ghose, T. J. van der Linden, W. R. van der Star and M. C. van Loosdrecht. 2010. Quantifying biomediated ground improvement by ureolysis: Large-scale biogrout experiment. Journal of Geotechnical and Geoenvironmental Engineering 136(12):1721-1728. DOI: 10.1061/(ASCE)GT.1943-5606.0000382. (link )
Whiffen, V. S., L. A. van Paassen and M. P. Harkes. 2007. Microbial carbonate precipitation as a soil improvement technique. Geomicrobiology Journal 24(5):417-423. DOI: 10.1080/01490450701436505. (link )
Barends, F. B., J. Breedeveld, R. B. Brinkgreve, M. Korff and L. A. van Paassen eds. 2011. Geotechnical Engineering: New Horizons (Proceedings of the 21st European Young Geotechnical Engineers Conference, Rottedam, 2011). IOS Press. ISBN: 978-1607508076.
van Paassen, L. A. and Y. Kulshreshtha. 2017. Biopolymers: Cement Replacement. Pp. 108-115 In: Hebel, D. E. and F. Heisel eds., Cultivated Building Materials: Industrialized Natural Resources for Architecture and Construction. De Gruyter. ISBN: 978-3-0356-1106-9.
van Paassen, L. A., C. M. Daza, M. C. van Loosdrecht, R. Kleerebezem, W. R. van der Star and W. van der Zon. 2008. Microbially induced carbonate precipitation as ground improvement technique. Patent WO2007069884-A1, Issue date: 9 October 2008.
van Paassen, L. A., V. S. Whiffen and M. P. Harkes. 2007. Immobilization of bacteria to a geological material. Patent WO2007069884-A1, Issue date: 21 June 2007.