Abstract
Direct-land application of liquid hog manure is the most common practice for recycling this type of waste. However, liquid hog manure not only contains valuable agronomic substances, it also includes substances that may pose serious environmental concerns. Pyrolysis-Field Ionization Mass Spectrometry(Py-FIMS), 13C Nuclear Magnetic Resonance (13C NMR), and Fourier-Transform Infra-Red (FTIR) were spectroscopy methods used to characterize colloidal fractions separated from three liquid hog manures. The spectroscopic data revealed that the colloids in the liquid manures contain relatively high concentrations of sterols(between 10.1 and 12.7% of Total Ion Intensity (TII)), which may have originated from animals and plants as well as from fortified feeds. Other significant colloid components, as percentages of TII, are lipids (5.3 to 11.9%), free fatty acids (3.4 to 9.5%), carbohydrates (2.5 to 6.0%), peptides (3.5 to 4.9%), n-alkylaromatics (2.9 to 4.0% C), N-compounds (3.1 to 4.7%), and phenols (2.5 to 4.0%). The presence of relatively high concentrations of sterols and phenols indicate that liquid hog manure has a high propensity for contributing to the contamination of soils and surface and subsurface waters.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
