Assessment and mitigation of the environmental burdens to air from land applied food-based digestate
Assessment and mitigation of the environmental burdens to air from land applied food-based digestate
Anaerobic digestion (AD) of putrescible urban waste for energy recovery has seen rapid growth over recent years. In order to ascertain its systems scale sustainability, however, determination of the environmental fate of the large volume of digestate generated during the process is indispensable. This paper evaluates the environmental burdens to air associated with land applied food-based digestate in terms of primary pollutants (ammonia, nitrogen dioxide) and greenhouse gases (methane and nitrous oxide). The assessments have been made in two stages – first, the emissions from surface application of food-based digestate are quantified for the business as usual (BAU). In the next step, environmental burden minimisation potentials for the following three mitigation measures are estimated – mixed waste digestate (MWD), soil-incorporated digestate (SID), and post-methanated digestate (PMD). Overall, the mitigation scenarios demonstrated considerable NH3, CH4 and N2O burden minimisation potentials, with positive implications for both climate change and urban pollution
262-270
Tiwary, A.
f948aa5f-5c42-42b0-8bcb-d8ea5e0d58f8
Williams, I.D.
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Pant, D.C.
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Kishore, V.V.N.
61251d8d-506a-485b-97db-4a2bab8ada61
15 February 2015
Tiwary, A.
f948aa5f-5c42-42b0-8bcb-d8ea5e0d58f8
Williams, I.D.
c9d674ac-ee69-4937-ab43-17e716266e22
Pant, D.C.
52aca8c6-28fe-45dc-9925-62b1171c4e2d
Kishore, V.V.N.
61251d8d-506a-485b-97db-4a2bab8ada61
Tiwary, A., Williams, I.D., Pant, D.C. and Kishore, V.V.N.
(2015)
Assessment and mitigation of the environmental burdens to air from land applied food-based digestate.
Environmental Pollution, 203, .
(doi:10.1016/j.envpol.2015.02.001).
Abstract
Anaerobic digestion (AD) of putrescible urban waste for energy recovery has seen rapid growth over recent years. In order to ascertain its systems scale sustainability, however, determination of the environmental fate of the large volume of digestate generated during the process is indispensable. This paper evaluates the environmental burdens to air associated with land applied food-based digestate in terms of primary pollutants (ammonia, nitrogen dioxide) and greenhouse gases (methane and nitrous oxide). The assessments have been made in two stages – first, the emissions from surface application of food-based digestate are quantified for the business as usual (BAU). In the next step, environmental burden minimisation potentials for the following three mitigation measures are estimated – mixed waste digestate (MWD), soil-incorporated digestate (SID), and post-methanated digestate (PMD). Overall, the mitigation scenarios demonstrated considerable NH3, CH4 and N2O burden minimisation potentials, with positive implications for both climate change and urban pollution
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Accepted/In Press date: 5 February 2015
Published date: 15 February 2015
Organisations:
Centre for Environmental Science
Identifiers
Local EPrints ID: 377307
URI: http://eprints.soton.ac.uk/id/eprint/377307
ISSN: 0269-7491
PURE UUID: 45ccd267-0d0d-4608-8aeb-92ef8b471ced
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Date deposited: 28 May 2015 13:47
Last modified: 15 Mar 2024 03:22
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Author:
A. Tiwary
Author:
D.C. Pant
Author:
V.V.N. Kishore
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