Reuse of Spent Coffee Grounds: Alternative Applications, Challenges, and Prospects—A Review

Spent coffee grounds (SCGs) are a waste product generated after brewing coffee. For every ton of brewed coffee, approximately 650 kg of grounds are produced. Their disposal can have harmful environmental effects, making it necessary to find alternative uses for SCGs. The valorization of coffee’s bio...

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Main Authors: Wiktoria Sidło, Jolanta Latosińska
Format: Article
Language:English
Published: MDPI AG 2024-12-01
Series:Applied Sciences
Subjects:
Online Access:https://www.mdpi.com/2076-3417/15/1/137
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author Wiktoria Sidło
Jolanta Latosińska
author_facet Wiktoria Sidło
Jolanta Latosińska
author_sort Wiktoria Sidło
collection DOAJ
description Spent coffee grounds (SCGs) are a waste product generated after brewing coffee. For every ton of brewed coffee, approximately 650 kg of grounds are produced. Their disposal can have harmful environmental effects, making it necessary to find alternative uses for SCGs. The valorization of coffee’s bioactive compounds significantly contributes to environmental protection and management. According to the literature, SCGs can be utilized as fertilizers, sorbents, additives for biodiesel production, in bioelectricity, or as an enhancer for the calorific value of biomass. SCGs can also be used as substrates for producing various items, such as cups or plant pots, in the food, cosmetics, and construction industries. The applications of SCGs described in this review article were conducted under laboratory conditions. The aim of this article is to analyze the alternative uses of SCGs in various fields, highlighting the diversity of applications as well as key drawbacks and limitations associated with their use. Additionally, potential future research directions are outlined, which could contribute to a more efficient and sustainable utilization of SCGs.
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spelling doaj-art-8a529d998a594553a97e11747a2db4f42025-01-10T13:14:34ZengMDPI AGApplied Sciences2076-34172024-12-0115113710.3390/app15010137Reuse of Spent Coffee Grounds: Alternative Applications, Challenges, and Prospects—A ReviewWiktoria Sidło0Jolanta Latosińska1Faculty of Environmental Engineering, Geomatics and Renewable Energy, Kielce University of Technology, Aleja Tysiąclecia Państwa Polskiego 7, 25-314 Kielce, PolandFaculty of Environmental Engineering, Geomatics and Renewable Energy, Kielce University of Technology, Aleja Tysiąclecia Państwa Polskiego 7, 25-314 Kielce, PolandSpent coffee grounds (SCGs) are a waste product generated after brewing coffee. For every ton of brewed coffee, approximately 650 kg of grounds are produced. Their disposal can have harmful environmental effects, making it necessary to find alternative uses for SCGs. The valorization of coffee’s bioactive compounds significantly contributes to environmental protection and management. According to the literature, SCGs can be utilized as fertilizers, sorbents, additives for biodiesel production, in bioelectricity, or as an enhancer for the calorific value of biomass. SCGs can also be used as substrates for producing various items, such as cups or plant pots, in the food, cosmetics, and construction industries. The applications of SCGs described in this review article were conducted under laboratory conditions. The aim of this article is to analyze the alternative uses of SCGs in various fields, highlighting the diversity of applications as well as key drawbacks and limitations associated with their use. Additionally, potential future research directions are outlined, which could contribute to a more efficient and sustainable utilization of SCGs.https://www.mdpi.com/2076-3417/15/1/137spent coffee groundsalternative usesvalue-added productssustainable utilizationresearch prospectsconstraints
spellingShingle Wiktoria Sidło
Jolanta Latosińska
Reuse of Spent Coffee Grounds: Alternative Applications, Challenges, and Prospects—A Review
Applied Sciences
spent coffee grounds
alternative uses
value-added products
sustainable utilization
research prospects
constraints
title Reuse of Spent Coffee Grounds: Alternative Applications, Challenges, and Prospects—A Review
title_full Reuse of Spent Coffee Grounds: Alternative Applications, Challenges, and Prospects—A Review
title_fullStr Reuse of Spent Coffee Grounds: Alternative Applications, Challenges, and Prospects—A Review
title_full_unstemmed Reuse of Spent Coffee Grounds: Alternative Applications, Challenges, and Prospects—A Review
title_short Reuse of Spent Coffee Grounds: Alternative Applications, Challenges, and Prospects—A Review
title_sort reuse of spent coffee grounds alternative applications challenges and prospects a review
topic spent coffee grounds
alternative uses
value-added products
sustainable utilization
research prospects
constraints
url https://www.mdpi.com/2076-3417/15/1/137
work_keys_str_mv AT wiktoriasidło reuseofspentcoffeegroundsalternativeapplicationschallengesandprospectsareview
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