Journal article
Effects of Anaerobic Digestion and Solids Separation on Ammonia Emissions from Stored and Land Applied Dairy Manure
Water, air, and soil pollution, Vol.226(9), pp.1-12
09/2015
Handle:
https://hdl.handle.net/2376/108317
Abstract
Field and laboratory studies were conducted to evaluate the effects of anaerobic digestion (AD) and solids-liquid separation on emissions during subsequent storage and land application. The lab storage tests were conducted for 21 days with manure samples obtained at the following four points in a full-scale AD system: raw manure (RM) delivery, raw manure supplemented with other substrates (AD influent), AD effluent, and AD effluent after solids-liquid separation (AD liquid effluent). Ammonia fluxes from stored AD effluent declined from 3.95 to 2.02 g m−2 day−1. Lower NH3 fluxes, however, were observed from AD liquid effluent (1.1 g m−2 day−1) and AD influent (0.25 g m−2 day−1). Ammonia emissions from full-scale manure storages were similar to those obtained in the lab. Results also indicated significantly lower volatile fatty acid (VFA) in AD effluent and AD liquid effluent compared with that from the AD influent, indicating significant reduction in odor generation potential due to AD and solids-liquid separation processes. Two manure application methods (surface application and manure injection) for both non-AD and AD manures were simulated in the lab and studied for 9 days. Surface-applied non-AD manure exhibited the highest NH3 flux (0.78 g m−2 day−1), while injected AD manure led to the lowest NH3 flux (0.17 g m−2 day−1). Similar NH3 emissions results were observed from the field studies. Overall, while AD of dairy manure resulted in significant increases in NH3 emissions from stored effluent, the AD process significantly reduced NH3 emissions following application of AD manure on land.
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Details
- Title
- Effects of Anaerobic Digestion and Solids Separation on Ammonia Emissions from Stored and Land Applied Dairy Manure
- Creators
- G Neerackal - Biological Systems Engineering Washington State University PO Box 646120 Pullman WA 99164 USAP Ndegwa - Biological Systems Engineering Washington State University PO Box 646120 Pullman WA 99164 USAH Joo - School of Environmental Science and Engineering Gwangju Institute of Science and Technology 123 Cheomdan-Gwagiro Gwangju 500-712 Buk-gu Republic of KoreaX Wang - Biological Systems Engineering Washington State University PO Box 646120 Pullman WA 99164 USAJ Harrison - Animal Sciences Washington State University 2606 West Pioneer Puyallup WA 98371 USAA Heber - Agricultural and Biological Engineering Purdue University 225 South University Street West Lafayette IN 47907 USAJ.-Q Ni - Agricultural and Biological Engineering Purdue University 225 South University Street West Lafayette IN 47907 USAC Frear - Biological Systems Engineering Washington State University PO Box 646120 Pullman WA 99164 USA
- Publication Details
- Water, air, and soil pollution, Vol.226(9), pp.1-12
- Academic Unit
- Animal Sciences, Department of; Biological Systems Engineering, Department of; Chemical Engineering and Bioengineering, School of
- Publisher
- Springer International Publishing; Cham
- Identifiers
- 99900547551401842
- Language
- English
- Resource Type
- Journal article