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Effects of Chemical Amendments on Phosphorus and Total Volatile Fatty Acids in Hanwoo Slurry
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 Title & Authors
Effects of Chemical Amendments on Phosphorus and Total Volatile Fatty Acids in Hanwoo Slurry
Choi, In-Hag; Choi, Jung-Hoon;
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The objectives of this study were to evaluate the effects of chemical additives on total phosphorus (TP), soluble reactive phosphorus (SRP), and total volatile fatty acids (total VFAs) in hanwoo slurry. The treatments in this study were ferrous sulfate, alum, and aluminum chloride, and applied at the rate of 0, 0.5, and 1.0 g/25 g of hanwoo slurry. All of the chemical treatments significantly lowered TP (11 to 53% of the untreated control), SRP (41 to 99.9% of the untreated control), and total VFAs (22 to 48.5% of the untreated control) by reducing hanwoo slurry pH (3.42 to 6.86). Among these chemical amendments, addition of 0.5 g ferrous sulfate, alum, and aluminum chloride to hanwoo slurry were the best results evaluated on farms with respect to reducing negative environmental impacts. In conclusion, the results of this study indicate that the use of chemical amendments should be considered in the development of best management practices (BMPs) for the hanwoo industries.
Ferrous sulfate;Alum;Aluminum chloride;pH;Total phosphorus (TP);Soluble reactive phosphorus(SRP);Total volatile fatty acid (Total VFAs);Hanwoo slurry;
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