Assessment of Radioactivity in Chicago Biosolids and its Transfer to Soil and Crops from Long Term Application
Abstract:The Metropolitan Water Reclamation District of Greater Chicago (District) produces 190,000 dry tons of biosolids annually and uses them to fertilize turf and crops. The District has maintained a continuous corn fertility study, with replicated plots receiving 0 (commercial fertilizer), 16.8, 33.6, and 67.2 Mg biosolids ha−1 annually, since 1973. Samples from 2000 were used to evaluate the effect of long-term biosolids applications on the radioactivity concentration in soil, and the uptake of radioactivity into corn grain and stover. There were no significant differences (p<0.05) in radionuclides concentrations in soil, corn grain and stover among the treatment plots. Of the 27 radionuclides studied, only potassium-40 (grain and stover) and radium-226 (grain) were detected in plant tissue. Long-term annual applications of biosolids did not increase radioactive materials concentration in soil or increase uptake of radioactivity by corn in biosolids-amended soil, compared to fertilized, plots in this study.
Document Type: Research Article
Publication date: April 1, 2007
More about this publication?
- Water Practice™ publishes peer-reviewed articles and reports focusing on applied water studies. Topics include monitoring, facility operations and maintenance, management, policy, and other issues of interest and concern to water practitioners. The Journal publishes on a monthly to bi-monthly basis and is available online only.
- Membership Information
- WEFTEC Conference Information
- ingentaconnect is not responsible for the content or availability of external websites