Sustainable management and recycling of food waste anaerobic digestate: A review

Shanta Dutta; Mingjing He; Xinni Xiong; Daniel C.W. Tsang

doi:10.1016/j.biortech.2021.125915

Sustainable management and recycling of food waste anaerobic digestate: A review

Shanta Dutta, Mingjing He, Xinni Xiong, Daniel C.W. Tsang

Research output: Journal article publication › Review article › Academic research › peer-review

207 Citations (Scopus)

Abstract

Anaerobic digestion (AD) is a widely used technology to valorise food waste for biogas production yet a considerable amount of digestate remains under-utilised. Sustainable management and recycling of the nutrient-rich food waste anaerobic digestate (FWD) is highly desirable for closing resource loop and actualising circular economy. This work reviews the distinct properties of FWD and the existing treatment technologies. FWD shows great prospects as a nutrient source for microalgal cultivation and biofuel production. Emerging technologies such as thermal conversion (e.g., pyrolysis and hydrothermal treatment) of FWD into value-added products such as functionalised biochar/hydrochar with diverse applications would be attractive and warrant further research investigation. Integrated AD with subsequent valorisation facilities is highly encouraged to achieve complete utilisation of resources and reduce carbon emissions.

Original language	English
Article number	125915
Journal	Bioresource Technology
Volume	341
DOIs	https://doi.org/10.1016/j.biortech.2021.125915
Publication status	Published - Dec 2021

Keywords

Bioenergy recovery
Engineered biochar
Hydrochar production
Hydrothermal carbonisation
Pyrolysis

ASJC Scopus subject areas

Bioengineering
Environmental Engineering
Renewable Energy, Sustainability and the Environment
Waste Management and Disposal

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.biortech.2021.125915

http://hdl.handle.net/10397/97347

Cite this

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title = "Sustainable management and recycling of food waste anaerobic digestate: A review",

abstract = "Anaerobic digestion (AD) is a widely used technology to valorise food waste for biogas production yet a considerable amount of digestate remains under-utilised. Sustainable management and recycling of the nutrient-rich food waste anaerobic digestate (FWD) is highly desirable for closing resource loop and actualising circular economy. This work reviews the distinct properties of FWD and the existing treatment technologies. FWD shows great prospects as a nutrient source for microalgal cultivation and biofuel production. Emerging technologies such as thermal conversion (e.g., pyrolysis and hydrothermal treatment) of FWD into value-added products such as functionalised biochar/hydrochar with diverse applications would be attractive and warrant further research investigation. Integrated AD with subsequent valorisation facilities is highly encouraged to achieve complete utilisation of resources and reduce carbon emissions.",

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author = "Shanta Dutta and Mingjing He and Xinni Xiong and Tsang, {Daniel C.W.}",

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AU - He, Mingjing

AU - Xiong, Xinni

AU - Tsang, Daniel C.W.

N1 - Funding Information: The authors appreciate the financial support from the Hong Kong International Airport Environmental Fund (Phase 2) and Hong Kong Environment and Conservation Fund (Project 101/2020). Publisher Copyright: © 2021 Elsevier Ltd

PY - 2021/12

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N2 - Anaerobic digestion (AD) is a widely used technology to valorise food waste for biogas production yet a considerable amount of digestate remains under-utilised. Sustainable management and recycling of the nutrient-rich food waste anaerobic digestate (FWD) is highly desirable for closing resource loop and actualising circular economy. This work reviews the distinct properties of FWD and the existing treatment technologies. FWD shows great prospects as a nutrient source for microalgal cultivation and biofuel production. Emerging technologies such as thermal conversion (e.g., pyrolysis and hydrothermal treatment) of FWD into value-added products such as functionalised biochar/hydrochar with diverse applications would be attractive and warrant further research investigation. Integrated AD with subsequent valorisation facilities is highly encouraged to achieve complete utilisation of resources and reduce carbon emissions.

AB - Anaerobic digestion (AD) is a widely used technology to valorise food waste for biogas production yet a considerable amount of digestate remains under-utilised. Sustainable management and recycling of the nutrient-rich food waste anaerobic digestate (FWD) is highly desirable for closing resource loop and actualising circular economy. This work reviews the distinct properties of FWD and the existing treatment technologies. FWD shows great prospects as a nutrient source for microalgal cultivation and biofuel production. Emerging technologies such as thermal conversion (e.g., pyrolysis and hydrothermal treatment) of FWD into value-added products such as functionalised biochar/hydrochar with diverse applications would be attractive and warrant further research investigation. Integrated AD with subsequent valorisation facilities is highly encouraged to achieve complete utilisation of resources and reduce carbon emissions.

KW - Bioenergy recovery

KW - Engineered biochar

KW - Hydrochar production

KW - Hydrothermal carbonisation

KW - Pyrolysis

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Sustainable management and recycling of food waste anaerobic digestate: A review

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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