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Dissolved Phosphorus Capture from Controlled Tile Drainage to the WLEB
Dissolved Phosphorus Capture from Controlled Tile Drainage to the WLEB
Dr. Kumari, a Research Associate, is leading the project with support from the Michigan Department of Environment, Great Lakes, and Energy. She is working in collaboration with Kieser & Associates, LLC.
This study investigated the performance of iron-activated alumina (Alcan) media for dissolved reactive phosphorus (DRP) removal from subsurface drainage water using laboratory-scale column experiments and regeneration cycles. The media exhibited high adsorption efficiency, with phosphate loadings up to 8.3 mg/g and over 90% recovery during the first desorption cycle using 0.1 M KOH. Subsequent adsorption-regeneration cycles confirmed the media’s reusability with moderate decline in performance, supporting its long-term application.
These findings highlight the potential of Alcan media as a sustainable solution for agricultural water treatment and nutrient recovery, aligning with circular economy goals in agroecosystem management. Visit the full paper here.
Estimation of Agricultural Return Flow and Groundwater Recharge Using Computation Model and Sensor Technology
Estimation of Agricultural Return Flow and Groundwater Recharge Using Computation Model and Sensor Technology
Dr. Ali, a Research Associate, is leading the project with support from the United State Geological Survey.
The research investigated that soil moisture sensors consistently underestimated deep percolation, particularly in sandy soils. Multilinear regression model incorporating irrigation depth, changes in volumetric water content, and time to stability was used to improve DP estimation accuracy. Also, it highlighted a practical way to enhance real-time DP prediction using soil moisture sensors.
These findings underscore the potential of combining sensor technology with empirical modelling to improve water balance assessments, agricultural return flow estimation and support smarter, more sustainable irrigation practices in agriculture. Visit the full paper here.
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