Authors: Farah Kanani, Nathan Pelletier,
Identifier: CSBE19169
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Published in: CSBE-SCGAB Technical Conferences » AGM Vancouver 2019

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Description: Poultry production, both meat and eggs, is projected to have the highest growth rate among livestock sectors between 2005 and 2050. Poultry are recognized as relatively efficient converters of feed to food relative to other livestock species. Nonetheless, increased production of poultry products will lead to larger volumes of associated by-product and waste streams. Principal methods for handling these materials are currently either landfill or rendering for spent hens, mortalities and egg shells and use of manure as organic fertilizer. However, a variety of technological alternatives exist which may present more or less sustainable means of valorizing these waste streams to produce energy. This review identifies, categorizes and describes current and emerging waste valorization technologies available for livestock and evaluates their potential application for key poultry waste streams. Papers focusing on valorization of all major livestock waste streams that were published in 7 principal journals between 2000-2018 were considered. A total of 473 papers were collected from which 106 were specific to poultry waste streams and were reviewed in detail using a set of specified criteria. Four feasible and well-developed technologies were identified for valorization of key poultry waste streams: anaerobic co-digestion, anaerobic mono-digestion (biological technologies), pyrolysis and gasification (thermochemical technologies). Biological process technologies should be considered as priority options because they are relatively cost-effective, have a flexible implementation scalability and produce less CO2 emissions. However, comparative life cycle assessment studies are recommended to comprehensively evaluate the potential net sustainability benefits and impacts of these technologies compared to conventional alternatives.

Keywords: waste valorization, poultry waste, anaerobic digestion, thermal technologies, life cycle thinking
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Date: 2019-07-15
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Conference name: CSBE/SCGAB 2019 Annual Conference, Vancouver, BC, 14-17 July 2019.
Session name: Bioenergy and bioproducts 1

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Type: Presentation
Publication type: Text.Abstract
Coverage: Canada
Language 1: en
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Rights: Canadian Society for Bioengineering
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