Author
 |
Norton, Lloyd |
|
DICK, WARREN - THE OHIO STATE UNIVERSITY |
|
KOST, DAVID - THE OHIO STATE UNIVERSITY |
|
Submitted to: Proceeding American Coal Ash Association
Publication Type: Abstract Only Publication Acceptance Date: 1/15/2009 Publication Date: 5/4/2009 Citation: Norton, L.D., Dick, W., Kost, D. 2009. Comparison of Mined Gypsum Pellets and FGD Gypsum on Plant Productivity and Nutrient Uptake [abstract]. Proceedings of the 2009 World of Coal Ash (WOCA) Conference, May 4-7, 2009, Lexington, Kentucky. 2009. Abstract No. 41, pg. 65 Interpretive Summary:
Technical Abstract: A study was conducted to compare differences between gypsum application from mined sources and FGD gypsum (FGD) on several environmental parameters. The studies objective was to address the fate of Hg and other RCRA metals in a common agricultural system and access its mobility in shallow groundwater. We applied 0, 0.34, 0.84 and 2.42 MT ha-1 FGD and mined gypsum pellets (PG) to 0.8 km long by 20 m wide plots with Yeddo/Ragsdale soils. The experimental was completely random with 4 replicates with three rates of each material and a control. Suction lysimeters were installed at 60 cm to high rate and control plots corn planting. Water samples were taken and analyzed for 32 elements, nitrate, ammonia, phosphate, sulfate, chloride and six herbicides. Atrazine and glyphoste was found in the water samples but below the MCL except one sample. Trace or no metolochlor, acetochlor simazine and alachlor were found. No differences among treatments were found. Trace amounts or undetectable levels of the RCRA elements were found in the water except for Hg which was detected at ppt levels. FGD had 200 ppt Hg compared to 0.1 ppt for PG and 26.1 for soil, little was found in the water. The concentration order was FGD |
