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ARS Home » Plains Area » Clay Center, Nebraska » U.S. Meat Animal Research Center » Livestock Bio-Systems » Research » Publications at this Location » Publication #351781

Research Project: Sustainable Management and Byproduct Utilization of Manure Nutrients and Environmental Contaminants from Beef and Swine Production Facilities

Location: Livestock Bio-Systems

Title: Physical interactions of antibiotics and metabolites with solids: elucidating fate, transportation and mitigation methods

item Stromer, Bobbi
item Woodbury, Bryan
item Williams, Clinton

Submitted to: American Chemical Society Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: 5/16/2018
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: Common livestock antibiotics can promote antibiotic resistance in the environment. After administration to livestock, antibiotics and their metabolites collect in wastewater ponds before being released into the environment when used for crop irrigation. Tylosin, chlorotetracycline, and their respective metabolites were characterized for their sorption to diatomite, clay and humic acids. These sorption studies provided valuable information about the physical processes responsible for sorption to different solids surfaces in the environment. For example, tylosin sorption to amorphous diatomite was found to be due to electrostatic and hydrogen bonding interactions. The reversibility of binding was dependent upon the characteristics of the solids and antibiotics tested. Tylosin reversibly sorbed to humic acid and amorphous diatomite, irreversibly sorbed to clay and did not sorb to crystalline diatomite at all. Results from these studies improved our understanding of tylosin’s interaction in the natural systems and provided valuable information for designing mitigation methods for removing antibiotics and their metabolites from wastewater for overall reduction in environmental stress.