Chemical Composition and Heavy Metal Contents in Commercial Liquid Pig Manures
2011
Lee, J.H., National Academy of Agricultural Science, RDA, Suwon, Republic of Korea | Go, W.R., National Academy of Agricultural Science, RDA, Suwon, Republic of Korea | Kunhikrishnan, Anitha, National Academy of Agricultural Science, RDA, Suwon, Republic of Korea | Yoo, J.H., National Academy of Agricultural Science, RDA, Suwon, Republic of Korea | Kim, J.Y., National Academy of Agricultural Science, RDA, Suwon, Republic of Korea | Kim, W.I., National Academy of Agricultural Science, RDA, Suwon, Republic of Korea
Heavy metal concentration as well as chemical composition were surveyed in commercial liquid pig manure to provide the basic information for mitigation research of hazardous material to agro-product. Seventy-five samples of liquid pig manure were collected and analyzed from 2009 to 2010 nationwide. Average contents of T-N, P₂O∧5, and K₂O were 0.29%, 0.08%, and 0.11%, respectively. The contents of heavy metals ranged from 0.001~0.083 for As, 0.001~0.108 for Cd, 0.002~0.495 for Cr, 0.07~47.8 for Cu, ND~0.005 for Hg, 0.035~1.033 for Ni, ND~0.291 for Pb, and 0.75~342.4 mg L-¹ for Zn, respectively. It was noted that among 75 samples, only four samples exceeded the Zn guideline (130 mg L-¹) of liquid fertilizer derived from livestock manure but others were not exceeded the regulation.
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