Chemistry potential and application of activated carbon manufactured from coffee grounds in the treatment of wastewater: A review

Tran, Thi Kim Ngan; Ngo, Thi Cam Quyen; Nguyễn, Quang Vinh; Trung, Sy; Hoang, Ngoc Bich

doi:10.1016/j.matpr.2022.01.020

Cited by 7 publications

(1 citation statement)

References 58 publications

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“…Bann et al summarized the various biorefinery routes to SCG valorization and its technoeconomic aspects in the context of a circular bio-economy [10]. The production of carbon materials (e.g., biochar, charcoal, or activated carbon) by using pyrolysis/activation processes has been reviewed in the literature [11][12][13]. Gebreeyessus revealed that SCG can yield food ingredients, pharmaceutical bioproducts, organic fertilizer, and a variety of biofuels [14].…”

Section: Introductionmentioning

confidence: 99%

Valorization of Coffee Residue from Convenience Store and Retail Mass-Selling Store for Producing Highly Porous Carbon Materials and Taiwan Perspectives

Lee,

Huang,

Tsai

et al. 2024

Energies

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In Taiwan, a considerable amount of coffee residue is produced from commercial activities without valuable utilization. To evaluate high-value valorization in the production of highly porous carbon materials, this study investigated the thermochemical properties of coffee residues and further pyrolysis for producing highly porous biochar products at an elevated temperature (i.e., 850 °C) and a moderate residence time of 30 min. Our findings indicate that this biomass has a relatively high calorific value (about 27 MJ/kg, dry basis) due to its low ash and high lignocellulose content. It can be also concluded that the non-activated biochar products are highly porous carbon materials with excellent pore properties (i.e., a BET surface area of about 800 m2/g and a total pore volume of 0.4 cm3/g), which are slightly lower than those of commercial activated carbon products. Based on the above-mentioned results and the high-value circular bio-economy promoted by regulatory policy in Taiwan, the prospects for the possible valorization of coffee residue from commercial shops are addressed here, focusing both on the reuse of plant-based residue (or agricultural waste) as a high-value bioresource in the production of biomass-based fuels and on carbon materials. The former includes solid recovered fuel (SRF) and biomass-to-biogas power. By contrast, the latter aims at the production of plant-based carbon as natural, edible colorants in accordance with the regulation of food safety and sanitation in Taiwan.

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