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Integration of bioe...
Integration of bioenergy systems into UK agriculture-New options for management of nitrogen flows
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- Skenhall, Sara Alongi, 1983 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Berndes, Göran, 1966 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Woods, J. (author)
- Imperial College of Science, Technology and Medicine
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(creator_code:org_t)
- Elsevier BV, 2013
- 2013
- English.
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In: Biomass and Bioenergy. - : Elsevier BV. - 1873-2909 .- 0961-9534. ; 54, s. 219-226
- Related links:
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http://dx.doi.org/10...
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Abstract
Subject headings
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- The large flow of reactive nitrogen (N) through agriculture causes negative environmental impacts, pointing to a need for changes in agricultural practices. At the same time, agriculture is expected to provide biomass to support the increasing demand from the UK bioenergy sector. A high-level aggregated model of the agricultural system in the UK was developed, which maintains the existing level of food and livestock production and at the same time increases N recirculation. Integrating three different bioenergy sub-systems into the agricultural system was an essential component of the model development. Cellulosic bioenergy crops were located in the landscape as vegetation filters to intercept and capture N and thereby reduce N leaching. Efficient collection and digestion of manure produced organic N fertiliser and biogas. Efficient forage production for cattle allowed further cultivation of bioenergy plants. Five implementation scenarios were developed to clarify the contribution of these bioenergy sub-systems to improved N management. The results point to a significant potential for improving the productive use of reactive N and for decreasing N losses to water and air. The interception and recirculation of N presently leaching from arable fields is assessed as the most important option. It is also important to increase recirculation of N in manure and in bioenergy system by-flows. Besides mitigating the environmental impacts of agriculture these measures reduce the requirements for newly synthesised N fertilisers. A systems perspective on N, agriculture, and bioenergy systems facilitates N recirculation and promotes effective N use, reducing the need for additional N inputs.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Industriell bioteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Industrial Biotechnology (hsv//eng)
Keyword
- Recirculation
- Environment
- Nitrogen
- Agriculture
- Land use
- Bioenergy
Publication and Content Type
- art (subject category)
- ref (subject category)
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