Anaerobic digestion of coffee waste by two-phase methane fermentation with slurry-state liquefaction

Kida, Kenji; Ikbal,; Teshima, Motowo; Sonoda, Yorikazu; Tanemura, Kouhei

doi:10.1016/0922-338x(94)90247-x

Cited by 15 publications

(3 citation statements)

References 3 publications

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“…In the two-phase digestion system for coffee waste, the gas yield was 451 cm 3 g À1 degraded coffee waste, with 28.2% of the carbon in the waste converted to biogas. 126 Raynal et al 127 achieved 87% organic matter removal at 17 days HRT and 35°C, using vegetable substrates. Vieitez and Ghosh 128 prevented the inhibition of acidogenic fermentation by recycling the methane reactor ef¯uents at pH 7.5 to the acid reactor.…”

Section: Overall Two-stage Process Operation and Controlmentioning

confidence: 98%

Two‐phase anaerobic digestion processes: a review

Demirel

Yenigün

2002

J of Chemical Tech & Biotech

354

144

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This review provides a detailed comparative summary of the recent and current research activities in the area of two-phase anaerobic digestion processes. The acid phase and the methane phase are ®rst evaluated, individually, from microbiological, kinetic and modelling, process optimization, operation and control, inhibition, and toxicity points of view. The overall process performance is subsequently evaluated as a whole. Finally, areas requiring further research are determined.

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Section: Overall Two-stage Process Operation and Controlmentioning

confidence: 98%

Two‐phase anaerobic digestion processes: a review

Demirel

Yenigün

2002

J of Chemical Tech & Biotech

354

144

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“…In the above equations, sludge releases more ammonia than coffee grounds. The concentration of HCO 3 À in eqn (9) was 28% higher than that for sole-coffee grounds in eqn (6). A high concentration of HCO 3 À could reinforce the bicarbonate alkalinity and the robustness of a digester.…”

Section: Effects Of Ph Buffer and Micronutrients On Process Stabilitymentioning

confidence: 92%

“…5 However, subsequent experiments failed when operating a digester for a long time. Kida et al 6 treated coffee grounds in a thermophilic reactor and achieved a biogas production rate of 0.87 L per L per day within 91 days. However, the experiment did not yield reproducible data.…”

Section: Introductionmentioning

confidence: 99%

Thermophilic anaerobic co-digestion of coffee grounds and excess sludge: long term process stability and energy production

et al. 2015

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Enhancing biopolymer materials with coffee waste‐derived reinforcements

Bairwan,

Khalil H.P.S,

Nuryawan

et al. 2024

Polymer Engineering & Sci

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The rising consumption of coffee produces significant waste, posing environmental challenges. However, coffee waste serves as a low‐cost, abundant source of biocompounds to enhance polymer composites. The review examines the use of coffee waste as a filler in polymer matrices to create eco‐friendly composites with improved mechanical, antioxidant, and antibacterial properties. Chemical modifications of coffee waste further enhance these properties, making it a viable material for sustainable applications. The study highlights recent advancements in biopolymer composites using coffee industry byproducts, emphasizing their composition, characteristics, and sustainability benefits. This approach supports circular economy initiatives by converting waste into valuable materials, addressing both waste management and material sustainability. Future research will focus on optimizing processing techniques and exploring new applications for cost‐effective, sustainable production of polymer composites from coffee waste.Highlights Coffee waste offers a low‐cost, eco‐friendly filler for biopolymers. Coffee byproducts enhance polymer's antioxidant, antibacterial traits. Waste utilization aligns with sustainability, reducing environmental impact. Chemical treatments enhance coffee waste's contribution to biopolymers. Future research to focus on cost‐effective, sustainable material production.

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Anaerobic digestion of coffee waste by two-phase methane fermentation with slurry-state liquefaction

Cited by 15 publications

References 3 publications

Two‐phase anaerobic digestion processes: a review

Two‐phase anaerobic digestion processes: a review

Thermophilic anaerobic co-digestion of coffee grounds and excess sludge: long term process stability and energy production

Enhancing biopolymer materials with coffee waste‐derived reinforcements

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