Next Article in Journal
Disproportionate Water Quality Impacts from the Century-Old Nautanen Copper Mines, Northern Sweden
Previous Article in Journal
Customer Concentration, Economic Policy Uncertainty and Enterprise Sustainable Innovation
Open AccessArticle

Effects of SOP Lagoon Additive on Gaseous Emissions from Stored Liquid Dairy Manure

1
Department of Animal Science, University of California, Davis, Davis, CA 95616-8521, USA
2
Department of Biological & Agricultural Engineering, University of California, Davis, Davis, CA 95616-8521, USA
3
Department of Agricultural Engineering, Mansoura University, El Mansoura 35516, Egypt
4
Air Quality Research Center, University of California, Davis, Davis, CA 95616-8521, USA
*
Author to whom correspondence should be addressed.
Sustainability 2020, 12(4), 1393; https://doi.org/10.3390/su12041393
Received: 10 January 2020 / Revised: 10 February 2020 / Accepted: 10 February 2020 / Published: 13 February 2020
(This article belongs to the Section Sustainable Agriculture, Food and Wildlife)
Animal manure is a source of greenhouse gas (GHG) emissions and other pollutants and nuisances such as ammonia and odors. There are several technologies to reduce emissions on animal farms including manure additives; however, few have been proven effective and easy to apply to dairy lagoon systems. The present research aimed at testing the ability of the commercial additive “SOP LAGOON” to reduce emissions of GHGs (i.e., carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O)), as well as ammonia (NH3) and odors from lagoon stored liquid manure. Emissions of GHGs, NH3 and odors were measured in the laboratory from barrels filled with 65 L of manure treated with SOP LAGOON or left untreated as a control. Manure was collected from a commercial dairy that is located in Solano County, California. Emissions of GHGs and NH3 were continuously measured for one week using flux chambers placed on top of the barrels and connected to a mobile air emissions laboratory. The effects of the untreated control, versus the two respective treatment additive doses of 30.8 and 61.6 g/m3 of manure were compared to each other. The low dose was selected based on the manufacturer recommendation and the high dose was selected by doubling the low dose. Results showed that SOP LAGOON applied at the high dose (61.6 g of SOP LAGOON per m3 of manure) versus the control greatly reduced (p < 0.05) emissions of CO2, CH4, N2O and NH3 by 14.7%, 22.7%, 45.4% and 45.9%, respectively. Furthermore, the high dose of SOP LAGOON treated samples versus the control samples showed less odor intensity (p < 0.05). There was no significant effect of the low dose of SOP LAGOON on the emissions of different gases. The HIGH dose of SOP LAGOON might decrease the number of methanogens and hydrolytic microorganisms and their excreted enzymes during manure storage. Further studies are needed to investigate the mechanism of emission reduction using SOP LAGOON. View Full-Text
Keywords: sustainability; SDG; GHG; ammonia; odor; dairy; liquid manure; manure additive sustainability; SDG; GHG; ammonia; odor; dairy; liquid manure; manure additive
Show Figures

Figure 1

MDPI and ACS Style

Peterson, C.B.; El Mashad, H.M.; Zhao, Y.; Pan, Y.; Mitloehner, F.M. Effects of SOP Lagoon Additive on Gaseous Emissions from Stored Liquid Dairy Manure. Sustainability 2020, 12, 1393.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop