Date of Graduation

5-2014

Document Type

Thesis

Degree Name

Bachelor of Science in Biological Engineering

Degree Level

Undergraduate

Department

Biological and Agricultural Engineering

Advisor

Haggard, Brian E. (Brian Edward)

Reader

Liang, Yi

Second Reader

Zaharoff, David A.

Abstract

Phosphorus is known to be a chief factor in the eutrophication of freshwaters. Phosphorus in land applied poultry litter can runoff and pollute these freshwaters. Chitosan, the deacetylated form of the biopolymer chitin, has been shown to have an effect on reducing water extractable phosphorus (WEP) in poultry litter when applied as a powder. The intent of this study was to measure the effect that acetic acid and incubation time have on chitosan’s ability to reduce WEP in poultry litter. The results were that the presence of poultry litter treatment (PLT) in the litter inhibits chitosan’s ability reduce WEP. Chitosan dissolved in acetic acid does not decrease WEP after any amount of incubation time. Chitosan in a powder form reaches its full effectiveness after three weeks of incubation.

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