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Using microalgae in the circular economy to valorise anaerobic digestate: Challenges and Opportunities

William A.V. Stiles, David Styles, Stephen P. Chapman, Sandra Esteves, Angela Bywater, Lynsey Melville, Alla Silkina, Ingrid Lupatsch, Claudio Fuentes Grünewald, Robert Lovitt, Tom Chaloner, Andy Bull, Chris Morris, Carole Llewellyn, Claudio Fuentes Grunewald Orcid Logo

Bioresource Technology

Swansea University Authors: Robert Lovitt , Carole Llewellyn , Claudio Fuentes Grunewald Orcid Logo

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Abstract

Managing organic waste streams is a major challenge for the agricultural industry. Anaerobic digestion (AD) of organic wastes is a preferred option in the waste management hierarchy, as this process can generate renewable energy, reduce emissions from waste storage, and produce fertiliser material....

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Published in: Bioresource Technology
ISSN: 09608524
Published: 2018
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URI: https://cronfa.swan.ac.uk/Record/cronfa41128
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Anaerobic digestion (AD) of organic wastes is a preferred option in the waste management hierarchy, as this process can generate renewable energy, reduce emissions from waste storage, and produce fertiliser material. However, Nitrate Vulnerable Zone legislation and seasonal restrictions can limit the use of digestate on agricultural land. In this paper we demonstrate the potential of cultivating microalgae on digestate as a feedstock, either directly after dilution, or indirectly from effluent remaining after biofertiliser extraction. Resultant microalgal biomass can then be used to produce livestock feed, biofuel or for higher value bio-products. The approach could mitigate for possible regional excesses, and substitute conventional high-impact products with bio-resources, enhancing sustainability within a circular economy. Recycling nutrients from digestate with algal technology is at an early stage. 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spelling 2018-08-30T13:47:39.1822404 v2 41128 2018-07-26 Using microalgae in the circular economy to valorise anaerobic digestate: Challenges and Opportunities 130c3c35f45826bb0f4836305e8e51c7 Robert Lovitt Robert Lovitt true false bcd94bda79ebf4c2c82d82dfb027a140 Carole Llewellyn Carole Llewellyn true false 8d7cf97e82178c021883618d24acb4b4 0000-0002-3122-9452 Claudio Fuentes Grunewald Claudio Fuentes Grunewald true false 2018-07-26 FGSEN Managing organic waste streams is a major challenge for the agricultural industry. Anaerobic digestion (AD) of organic wastes is a preferred option in the waste management hierarchy, as this process can generate renewable energy, reduce emissions from waste storage, and produce fertiliser material. However, Nitrate Vulnerable Zone legislation and seasonal restrictions can limit the use of digestate on agricultural land. In this paper we demonstrate the potential of cultivating microalgae on digestate as a feedstock, either directly after dilution, or indirectly from effluent remaining after biofertiliser extraction. Resultant microalgal biomass can then be used to produce livestock feed, biofuel or for higher value bio-products. The approach could mitigate for possible regional excesses, and substitute conventional high-impact products with bio-resources, enhancing sustainability within a circular economy. Recycling nutrients from digestate with algal technology is at an early stage. We present and discuss challenges and opportunities associated with developing this new technology. Journal Article Bioresource Technology 09608524 Anaerobic digestion, Algae, Nutrient recycling, Livestock feed, Circular economy 30 11 2018 2018-11-30 10.1016/j.biortech.2018.07.100 COLLEGE NANME Science and Engineering - Faculty COLLEGE CODE FGSEN Swansea University 2018-08-30T13:47:39.1822404 2018-07-26T11:09:55.5071030 College of Engineering Engineering William A.V. Stiles 1 David Styles 2 Stephen P. Chapman 3 Sandra Esteves 4 Angela Bywater 5 Lynsey Melville 6 Alla Silkina 7 Ingrid Lupatsch 8 Claudio Fuentes Grünewald 9 Robert Lovitt 10 Tom Chaloner 11 Andy Bull 12 Chris Morris 13 Carole Llewellyn 14 Claudio Fuentes Grunewald 0000-0002-3122-9452 15 0041128-26072018111155.pdf stiles2018.pdf 2018-07-26T11:11:55.8630000 Output 1476995 application/pdf Accepted Manuscript true 2019-07-21T00:00:00.0000000 Released under the terms of a Creative Commons Attribution Non-Commercial No Derivatives License (CC-BY-NC-ND). true eng
title Using microalgae in the circular economy to valorise anaerobic digestate: Challenges and Opportunities
spellingShingle Using microalgae in the circular economy to valorise anaerobic digestate: Challenges and Opportunities
Robert, Lovitt
Carole, Llewellyn
Claudio, Fuentes Grunewald
title_short Using microalgae in the circular economy to valorise anaerobic digestate: Challenges and Opportunities
title_full Using microalgae in the circular economy to valorise anaerobic digestate: Challenges and Opportunities
title_fullStr Using microalgae in the circular economy to valorise anaerobic digestate: Challenges and Opportunities
title_full_unstemmed Using microalgae in the circular economy to valorise anaerobic digestate: Challenges and Opportunities
title_sort Using microalgae in the circular economy to valorise anaerobic digestate: Challenges and Opportunities
author_id_str_mv 130c3c35f45826bb0f4836305e8e51c7
bcd94bda79ebf4c2c82d82dfb027a140
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author_id_fullname_str_mv 130c3c35f45826bb0f4836305e8e51c7_***_Robert, Lovitt_***_
bcd94bda79ebf4c2c82d82dfb027a140_***_Carole, Llewellyn_***_
8d7cf97e82178c021883618d24acb4b4_***_Claudio, Fuentes Grunewald_***_0000-0002-3122-9452
author Robert, Lovitt
Carole, Llewellyn
Claudio, Fuentes Grunewald
author2 William A.V. Stiles
David Styles
Stephen P. Chapman
Sandra Esteves
Angela Bywater
Lynsey Melville
Alla Silkina
Ingrid Lupatsch
Claudio Fuentes Grünewald
Robert Lovitt
Tom Chaloner
Andy Bull
Chris Morris
Carole Llewellyn
Claudio Fuentes Grunewald
format Journal article
container_title Bioresource Technology
publishDate 2018
institution Swansea University
issn 09608524
doi_str_mv 10.1016/j.biortech.2018.07.100
college_str College of Engineering
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hierarchy_top_id collegeofengineering
hierarchy_top_title College of Engineering
hierarchy_parent_id collegeofengineering
hierarchy_parent_title College of Engineering
department_str Engineering{{{_:::_}}}College of Engineering{{{_:::_}}}Engineering
document_store_str 1
active_str 0
description Managing organic waste streams is a major challenge for the agricultural industry. Anaerobic digestion (AD) of organic wastes is a preferred option in the waste management hierarchy, as this process can generate renewable energy, reduce emissions from waste storage, and produce fertiliser material. However, Nitrate Vulnerable Zone legislation and seasonal restrictions can limit the use of digestate on agricultural land. In this paper we demonstrate the potential of cultivating microalgae on digestate as a feedstock, either directly after dilution, or indirectly from effluent remaining after biofertiliser extraction. Resultant microalgal biomass can then be used to produce livestock feed, biofuel or for higher value bio-products. The approach could mitigate for possible regional excesses, and substitute conventional high-impact products with bio-resources, enhancing sustainability within a circular economy. Recycling nutrients from digestate with algal technology is at an early stage. We present and discuss challenges and opportunities associated with developing this new technology.
published_date 2018-11-30T04:04:22Z
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