Integration of spent coffee grounds valorization for co-production of biodiesel and activated carbon: An energy and techno-economic case assessment in China

Tian, Hong; Zhou, Tong; Huang, Zhangjun; Wang, Jiawei; Cheng, Hua; Yang, Yang

doi:10.1016/j.jclepro.2021.129187

Cited by 23 publications

(6 citation statements)

References 42 publications

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“…The appearance and morphologies of SCG and CNF are shown in Figure . SCG powder has brown porous structure, which mainly consists of lignin, cellulose, hemicellulose, and other small molecule compounds, and their infrared absorption peaks and attributions can be found in Table . The peaks at 1164, 1456, and 1539 cm –1 are corresponded to stretching vibration of ether, methoxy and aromatic skeleton, which are belong to characteristic absorptions of lignin, chlorogenic acid, and caffeine …”

Section: Results and Discussionmentioning

confidence: 99%

SCG-Based CNF Aerogels with Oriented and Aligned Porous Structure for Solar Interfacial Desalination

Luo,

Zhou,

Zheng

et al. 2023

ACS Appl. Mater. Interfaces

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Section: Results and Discussionmentioning

confidence: 99%

SCG-Based CNF Aerogels with Oriented and Aligned Porous Structure for Solar Interfacial Desalination

Luo,

Zhou,

Zheng

et al. 2023

ACS Appl. Mater. Interfaces

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“…The obtained findings show that the efficiency of prepared SCGO in stimulating collagen was considerably higher than that of ascorbic acid but comparable to that of linoleic acid (Kanlayavattanakul et al, 2021). Also, the production of biodiesel and activated carbon from SCG was reported by Tian et al (2021). The findings revealed that the SCG recovery system can produce activated carbon, biodiesel, and glycerol with product yields of 14.06%, 13.41%, and 2.24%, respectively.…”

Section: Spent Coffee Grounds Valorizationmentioning

confidence: 91%

“…The findings revealed that the SCG recovery system can produce activated carbon, biodiesel, and glycerol with product yields of 14.06%, 13.41%, and 2.24%, respectively. The estimated overall production efficiency was found to be 30.5% (Tian et al, 2021 gave physicochemical, functional properties, and antioxidant activity of protein extract from SCG using ultrasonic-assisted extraction.…”

Section: S Pent Coffee G Rounds Valoriz Ationmentioning

confidence: 99%

“…The findings revealed that the SCG recovery system can produce activated carbon, biodiesel, and glycerol with product yields of 14.06%, 13.41%, and 2.24%, respectively. The estimated overall production efficiency was found to be 30.5% (Tian et al, 2021). López‐Linares et al (2021), investigated the valorization of SCG to produce antioxidant compounds and biobutanol using microwave‐assisted extraction with natural deep eutectic solvents (NADES).…”

Section: Spent Coffee Grounds Valorizationmentioning

confidence: 99%

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Spent coffee grounds: A sustainable approach toward novel perspectives of valorization

Bijla

Aissa

Laknifli

et al. 2022

Journal of Food Biochemistry

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Coffee is one of the most popular and preferred drinks in the world, being consumed for its refreshing and energizing properties. As a result, the consumption of coffee generates millions of tons of waste, in particular, spent coffee grounds (SCG). On the contrary, food waste recovery is an incredibly sustainable and convenient solution to the growing need for materials, fuels, and chemicals. SCG has been developed as a precious resource of several high value‐added products (oil, proteins, minerals, fatty acids, sterols….). Thus, a transformative pathway to a circular economy that involves the valorization of coffee wastes and by‐products is currently attracting the attention of researchers worldwide. The potential growth of scientific papers and publications promotes a comprehensive review to determine the research hotspots, knowledge structure, and to consider future avenues and challenges. Therefore, in this paper, we conducted a systematic review based on 275 indexed papers on the composition and valorization of SCG as a prospective environmental source. Practical applications SCG can be applied in agro‐food industries.

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“…This is due to its higher surface area and micropore volume compared to those derived from pyrolysis processes. The common fluctuation range of the activated carbon market value is approximately 1.4–2.8 US$/kg (or 2–4 A$/kg). − Hence, its generation would offer the potential to use biochar as an additional revenue stream to increase the SOB. However, the viability of this opportunity was not assessed for the SDFB gasifier concerning solar unit designs.…”

Section: Introductionmentioning

confidence: 99%

Techno-Economic Potential of a Polygeneration System Integrated with Conventional or Hybrid Solar Dual Fluidized Bed Gasification Technology in an Australian Sugar Mill

Ngo,

Nathan,

Ashman

et al. 2024

Energy Fuels

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A techno-economic assessment of a biorefinery plant has been conducted, considering the colocation of solar and biogenic resources. The investigation explored the opportunities for integrating a 50 MW th hybrid concentrated solar thermal dual fluidized bed (SDFB) gasifier into a sugar mill located in Harwood, Australia. Various end-product routes were considered, including utility generation with the additional synthesis of liquid fuels or power. Impacts of process configurations, concentrated solar thermal (CST) plant designs, and direct normal irradiance on energy efficiency, solar share, and economic feasibility were studied. Technical assessments indicate that integrating the SDFB gasifier into the mill enhances overall energetic efficiency (60−73%) and reduces net CO 2 emissions, surpassing the cogeneration benchmark. Economic assessments reveal the necessity for further cost optimization for competitive positioning in the current market, as breakeven analyses indicate that economic viability in suitable mill locations necessitates a liquid fuel price range of 2.3−5.

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Integration of spent coffee grounds valorization for co-production of biodiesel and activated carbon: An energy and techno-economic case assessment in China

Cited by 23 publications

References 42 publications

SCG-Based CNF Aerogels with Oriented and Aligned Porous Structure for Solar Interfacial Desalination

SCG-Based CNF Aerogels with Oriented and Aligned Porous Structure for Solar Interfacial Desalination

Spent coffee grounds: A sustainable approach toward novel perspectives of valorization

Techno-Economic Potential of a Polygeneration System Integrated with Conventional or Hybrid Solar Dual Fluidized Bed Gasification Technology in an Australian Sugar Mill

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