Development and testing of an evaluation procedure for commercial manure additive products

Banhazi, T. and Hudson, N. and Dunlop, M. and Dyson, C. and Thomas, R. (2009) Development and testing of an evaluation procedure for commercial manure additive products. Biosystems Engineering, 103 (3). pp. 321-328. ISSN 1537-5110

Abstract

Manure additive products can be used to reduce odour emissions (OE) from livestock farms. The standardised evaluation of these manure additive products under specific farm conditions is important. In this study, the efficacy of a manure additive (WonderTreat™, CKLS, Inc., Hong Kong) was assessed under Australian conditions utilising a combination of laboratory and field-scale evaluation techniques. As a first step, the efficacy of the manure additive was assessed in a laboratory-scale trial using a series of uniformly managed digesters and standard odour, liquor ammonia and hydrogen sulphide concentration measurement procedures. This showed that the addition of WonderTreat™ at the 'low dose rate' (LDR) (102.6 g m-2) used during the trial significantly, but only marginally (30%; P = 0.02) reduced the OE rate (mean 13.9 OU m-2 s-1) of anaerobic pig liquor relative to an untreated control (UC) (19.9 OU m-2 s-1). However, the 'high dose rate' (HDR) (205.3 g m-2) also assessed during the trial preformed similarly (19.7 OU m-2 s-1) to the UC. No statistically significant difference in the concentrations of a range of measured water quality variables at the 5% level was observed between the treatments or controls digesters. As a second step, a field-scale assessment of the manure additive was undertaken at a commercial piggery. Two piggery manure lagoons (each with approximately 2500 m2 surface area) were included in the study; one was treated with WonderTreat™ while the other was used as control. The efficacy of the treatment was assessed using olfactometric evaluation of odour samples collected from the surface of the pond using a dynamic wind tunnel and ancillary equipment. No statistically significant reduction in OE rate could be demonstrated (P = 0.35), partially due to the limited number of samples taken during the assessment. However, there was a numerical reduction in the average OE rate of the treatment pond (29 OU m-2 s-1 at 1 m s-1) compared to the control lagoon (38 OU m-2 s-1 at 1 m s-1).


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Author version not held. Published online 23 May 2009.
Depositing User: epEditor USQ
Faculty / Department / School: Current - USQ Other
Date Deposited: 18 Jul 2011 10:41
Last Modified: 29 Aug 2014 06:12
Uncontrolled Keywords: ancillary equipment; dynamic wind tunnels; field scale; high dose rate; Hong Kong; hydrogen sulphide; laboratory scale; low dose rate; manure additive; manure lagoons; odour emissions; treatment ponds; sewage lagoons
Fields of Research (FOR2008): 07 Agricultural and Veterinary Sciences > 0702 Animal Production > 070203 Animal Management
10 Technology > 1003 Industrial Biotechnology > 100305 Industrial Microbiology (incl. Biofeedstocks)
06 Biological Sciences > 0605 Microbiology > 060599 Microbiology not elsewhere classified
Socio-Economic Objective (SEO2008): B Economic Development > 83 Animal Production and Animal Primary Products > 8398 Environmentally Sustainable Animal Production > 839804 Management of Solid Waste from Animal Production
Identification Number or DOI: doi: 10.1016/j.biosystemseng.2009.04.011
URI: http://eprints.usq.edu.au/id/eprint/18901

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