Dairy manure nutrient recovery reduces greenhouse gas emissions and transportation cost in a modeling study
نویسندگان
چکیده
Technologies that separate manure or digestate into fractions with different solids and nutrient contents present interesting options to mitigate storage emissions (by reducing the quantity of carbon stored anaerobically) improve distribution water transported nutrients). In this study, dairy farm model, DairyCrop-Syst, was used simulate methane (CH 4 ), nitrous oxide (N 2 O), ammonia (NH 3 for a case-study in Canada. The several types processing, including: anaerobic digestion (AD), solid-liquid separation (SLS), recovery (NR). Simulations were done combinations above technologies, i.e., baseline only AD produced single (unseparated) effluent, compared AD+SLS, AD+SLS+NR two fractions. With AD+SLS+NR, processing system isolated solid fraction high concentration N P, liquid containing less nutrients. Compared system, addition (i.e. SLS+NR) reduced CH from outdoor by 87%, small offset higher O NH storing fraction. simulated be fields at least 30 km away barns, while dragline adjacent barn. advanced resulted much lower transport costs nutrients ability P greater distances.
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ژورنال
عنوان ژورنال: Frontiers in animal science
سال: 2023
ISSN: ['2673-6225']
DOI: https://doi.org/10.3389/fanim.2023.1134817