SURFACE APPLICATION OF SOYBEAN PEROXIDASE AND CALCIUM PEROXIDE FOR REDUCING ODOROUS VOC EMISSIONS FROM SWINE MANURE SLURRY

被引:8
|
作者
Parker, D. B. [1 ]
Hayes, M. [2 ]
Brown-Brandl, T. [3 ]
Woodbury, B. L. [3 ]
Spiehs, M. J. [3 ]
Koziel, J. A. [4 ]
机构
[1] ARS, USDA, Bushland, TX USA
[2] Univ Illinois, Urbana, IL 61801 USA
[3] ARS, USDA, Clay Ctr, NE USA
[4] Iowa State Univ, Ames, IA USA
基金
美国食品与农业研究所;
关键词
Manure; Odor; Soybean peroxidase; Swine; Volatile organic compound; SOLID-PHASE MICROEXTRACTION; VOLATILE ORGANIC-COMPOUNDS; CHEMICAL-EMISSIONS; PHENOLIC-COMPOUNDS; GAS; REMOVAL; OLFACTOMETRY; HORSERADISH; NITROGEN; PERFORMANCE;
D O I
10.13031/aea.32.11672
中图分类号
S2 [农业工程];
学科分类号
0828 ;
摘要
A laboratory experiment was conducted to evaluate and compare surface-applied versus fully-mixed treatments of soybean peroxidase (SBP) plus calcium peroxide (CaO2) for reducing odorous volatile organic compound (VOC) emissions from swine manure slurry. Industrial-grade SBP (5-50 g L-1) and powdered CaO2 (0.16-1.6 g L-1) were applied to swine manure slurry in 7.6 L containers, and odorous VOC emission rates (phenolics, indolics, volatile fatty acids, methyl sulfides) were measured over a 14 d period using sorbent tubes and gas chromatography. The five treatments consisted of a control, the fully-mixed rate of 50 g L-1 SBP plus 1.6 g L-1 CaO2, and three surface-applied treatments of 10%, 50%, and 100% of the fully-mixed application rate. The odorants 4-methylphenol and skatole accounted for the majority of the odor activity value (OAV). The 10% surface-applied rate was as effective as the 100% surface-applied and fully-mixed application rates at reducing 4-methylphenol and skatole emissions for up to 10 d (P<0.05). Emission rates for the treatments were greater than the control on d 14, indicating the need for reapplication of SBP+CaO2 every 4-7 d. Future pilot-and field-scale research should focus on surface application of SBP and CaO2 at a rate equal to 10% of the fully-mixed rate.
引用
收藏
页码:389 / 398
页数:10
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