Technical Papers
May 7, 2018

Hierarchical Decision-Modeling Framework to Meet Environmental Objectives in Biofuel Development

Publication: Journal of Water Resources Planning and Management
Volume 144, Issue 7

Abstract

Biofuel development to comply with the Renewable Fuel Standard (RFS) would alter conventional crop patterns in agricultural watersheds. As a result, the hydrologic response of the watersheds will exhibit different and often opposing effects on agrohydrological system variables such as riverine nitrate-N load and streamflow. Conventional modeling approaches treat those externalities as regulatory constraints, often fail to consider the hierarchical nature of the decision-making process, and end with unrealistic solutions. This study therefore proposes an alternative decision-modeling framework for biofuel development to optimize a water-quality objective under different levels of streamflow requirement in the watershed. A bilevel programming model is established to mimic the hierarchical decision-making process in environmental regulation. The model is applied to the Sangamon River basin, a typical agricultural watershed in central Illinois, to determine the optimal locations and type of ethanol biorefineries as policy instruments. The results show that the proposed instruments can effectively guide the decisions in biofuel development to meet the environmental objectives in the watershed, although adopting the proposed framework yields a lower profit than the conventional models, which is the price of a more realistic solution to the hierarchical decision problem. The results also highlight the importance of spatial heterogeneity and identifying an appropriate spatial scale to design effective environmental policies in biofuel development.

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Acknowledgments

This study was supported by the “Critical Infrastructure and Transportation” project funded by the Institute for Sustainability, Energy, and Environment at the University of Illinois at Urbana-Champaign.

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Journal of Water Resources Planning and Management
Volume 144Issue 7July 2018

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Received: Sep 17, 2017
Accepted: Jan 17, 2018
Published online: May 7, 2018
Published in print: Jul 1, 2018
Discussion open until: Oct 7, 2018

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Majid Shafiee-Jood, S.M.ASCE [email protected]
Graduate Research Assistant, Ven Te Chow Hydrosystems Laboratory, Dept. of Civil and Environmental Engineering, Univ. of Illinois at Urbana-Champaign, 205N. Mathews Ave., Urbana, IL 61801. Email: [email protected]
Mashor Housh, Ph.D., A.M.ASCE [email protected]
Lecturer, Faculty of Management, Dept. of Natural Resources and Environmental Management, Univ. of Haifa, Haifa 31905, Israel. Email: [email protected]
Ximing Cai, Ph.D., A.M.ASCE [email protected]
P.E.
Professor, Ven Te Chow Hydrosystems Laboratory, Dept. of Civil and Environmental Engineering, Univ. of Illinois at Urbana-Champaign, 205N. Mathews Ave., Urbana, IL 61801 (corresponding author). Email: [email protected]; [email protected]

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