Lori Han

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Lori Han

Assistant Professor

Email: lhan@ou.edu
Phone: (405) 325-4254
Office: Carson Engineering Center, Room 320

Han NBS Lab Website
Curriculum Vitae

Education
Ph.D. Bioproducts and Biosystems Science, Engineering and Management (2018)
University of Minnesota

M.S. Water Resources Science (2012)
University of Minnesota

B.S. Wildlife and Conservation Biology (2010)
University of Minnesota

About

The Han Nature-Based Solutions Lab aims to improve how we approach ecosystem restoration by working with nature rather than against it by providing resilient, long-term solutions to addressing environmental problems. Through our innovative methods, we strive to create sustainable ecosystems that can thrive for the benefit of both humans and the environment.

Research Focus

Our research is multidisciplinary, integrating principles of biology, ecology, hydrology, pedology, and engineering. The core of our work primarily focuses on employing natural infrastructure and nature-based solutions in ecological engineering design, leveraging nature's inherent wisdom to self-improve and self-sustain. Our research approach is multi-faceted, encompassing field trials, laboratory experiments, and spatial mapping and modeling.

Technical Areas

In-stream and riparian best management practices that improve water quality in disturbed aquatic environments.
Nature-based products for use in regenerative agriculture to improve soil health on degraded croplands and rangelands.
Sustainable land management practices that incorporate natural processes to promote ecosystem biodiversity in low quality, neglected landscapes.
Surface and groundwater pollution by contaminants of emerging concern from human solid waste and wastewater.

Experience and Awards

University of Minnesota (St. Paul, MN), Department of Bioproducts and Biosystems Engineering, Ph.D. Fellow. Project: Nutrient Removal using Novel Bioreactor Media (Sept. 2014 – Feb. 2018).
University of Minnesota (St. Paul, MN), Department of Bioproducts and Biosystems Engineering, Graduate Research Assistant. Project: Mycoalgae for Water Treatment (July 2017 – Jan. 2018).
University of Minnesota (St. Paul, MN), Department of Bioproducts and Biosystems Engineering, Research Fellow. Project: Assessment of the Mullenbach Two-Stage Ditch (July 2010 – Aug. 2014).
University of Minnesota (St. Paul, MN), Department of Bioproducts and Biosystems Engineering, Research Fellow. Project: Side Inlets to Improve Agricultural Water Quality (Sept. 2013 – July 2014).
University of Minnesota (St. Paul, MN), Department of Bioproducts and Biosystems Engineering, Research Fellow. Project: Assessment of Agricultural Drainage Benefits (Sept. 2013 – July 2014).
University of Minnesota (St. Paul, MN), Department of Bioproducts and Biosystems Engineering, Research Fellow. Project: Prioritization of Sentinel Watersheds (April 2011 – June 2013).
University of Minnesota (St. Paul, MN), Department of Entomology, Graduate Research Assistant. Project: Stenotherms in Groundwater-fed Streams (Aug. 2010 – May 2012).

Selected Publications

Note: Dr. Han’s former surname is Krider

Han, L. A., Wilson, B., Behrens, S., & Magner, J. 2025. Impact of temperature and residence time on nitrate removal in multi-media denitrifying bioreactors. Biosystems Engineering (submitted).
Han, L. A., Wilson, B., & Magner, J. 2025. Non-Ideal Continuously Stirred Bioreactor Model for Multi-Media Denitrifying Processes. Biosystems Engineering 253. https://www.sciencedirect.com/science/article/pii/S1537511025000571.
Han, L. A., Wilson, B., Magner, J., Lahti, L., Kramer, G., Hansen, B., & Nieber, J. 2025. Biochemical processes within a two-stage agricultural drainage ditch in Mower County, MN: Methods for estimating nitrogen removal rates and efficiencies. Agricultural Water Management 318. https://doi.org/10.1016/j.agwat.2025.108832.
Krider, L., Kramer, G., Wilson, B., Magner, J., Lazarus, W., Hansen, B., & Nieber, J. 2022. Alternative agricultural ditch designs, NO₃-N treatment, construction costs, and benefits—Mower County, Minnesota, USA. Journal of Environmental Science and Engineering B 11: 229–240.
Kramer, G., Peterson, J., Han, L., Hansen, B., Magner, J., Wilson, B., & Nieber, J. 2019. Design and construction of an alternative drainage ditch system. International Journal of Hydrology 3: 259–268.
DeZiel, B. A., Krider, L., Hansen, B., Magner, J., Wilson, B., Kramer, G., & Nieber, J. 2019. Habitat improvements and fish community response associated with an agricultural two-stage ditch in Mower County, Minnesota. Journal of the American Water Resources Association 55(1): 154–188. DOI: 10.1111/1752-1688.12713.
Krider, L., Magner, J., Hansen, B., Wilson, B., Kramer, G., Peterson, J., & Nieber, J. 2017. Improvements in fluvial stability associated with two-stage ditch construction in Mower County, Minnesota. Journal of the American Water Resources Association 53(4): 886–902. DOI: 10.1111/1752-1699.12541.
Krider, L., Wilson, B., & Magner, J. 2016. Design and construction of a reduced temperature testing apparatus for denitrification. 10th International Drainage Symposium. St. Joseph, MI: ASABE.
Peterson, J., Wilson, B., Titov, M., Krider, L., & Strock, J. 2014. Hydrologic impacts of side inlet storage modifications in an artificially drained agricultural landscape. American Society of Agricultural and Biological Engineers. Paper Number: 1909229.
Krider, L. A., Perry, J., Magner, J. A., Vondracek, B., & Ferrington, L. C., Jr. 2013. Air-water temperature relationships in the trout streams of southeastern Minnesota’s carbonate-sandstone landscape. Journal of the American Water Resources Association 49(4): 896–907. DOI: 10.1111/jawr.12046.