Sustainable Production of Coffee Husk Pellets: Applying Circular Economy in Waste Management and Renewable Energy Production

Resources, Journal Year: 2025, Volume and Issue: 14(2), P. 26 - 26

Published: Jan. 31, 2025

Improper waste disposal is one of the leading causes environmental pollution, impacting soil, water, and air quality. In coffee plantations, each kilogram beans produced generates an equal amount husk, emphasizing urgent need for sustainable practices to process this residual biomass into valued products. This study aimed evaluate potential husks pellet production. Three husk types were selected with distinct chemical compositions granulometries: I (>5.3 mm), II (>2.6 mm <5.3 III (<1.77 mm). The was characterized elemental, structural, proximate composition. Pellets two knife heights (15 20 mm) assessed moisture content, density, length, mechanical resistance, which compared EN 14691-6 standard (DIN, 2012). Pelletizer productivity also evaluated. from had ash content 12.09%, exceeding <10% requirement. Other treatments met standard, category B. (17.55%) (18.1%) at 15 length did not meet <15% standard. remaining pellets B standards. Only origin (1.62%) nitrogen requirement international trade (<2%). higher smaller granulometry biomass. Coffee has demonstrated its production, highlighting valorization use clean energy generation, contributing greenhouse gas emissions mitigation, strengthening circular economy.

Language: Английский

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Development of carbonized rice husks briquettes: Synergy between emissions, combustion, kinetics and thermodynamic characteristics

Energy Reports, Journal Year: 2023, Volume and Issue: 9, P. 5977 - 5991

Published: May 30, 2023

Briquettes uptake continues to be low, despite their ability offset the negative impacts caused by firewood/charcoal. Possible reason for this is lack of literature towards key parameters developed briquettes. In current study, emissions, combustion, kinetics and thermodynamic characteristics rice husks agricultural residue carbonized briquettes were obtained. The water boiling test emissions monitoring system CO, CO2 PM2.5 used determine fuel energy consumption, thermal efficiency while thermogravimetric analysis was utilized in obtaining kinetic parameters. activation determined employing four different model-free methods. Drop strength particle density 67.8% 548.15kg/m3, respectively. Briquettes' moisture, volatile matter, ash content fixed carbon 7.2%, 16.6%, 47.4% 28.8% Average attained Kissinger–Akahira–Sunose, Ozawa–Flynn–Wall, Starink Tang methods 78.3kJ/mol, 83.3kJ/mol, 78.7kJ/mol 75.0kJ/mol, Low barrier (5.2kJ/mol) between enthalpy changes indicated that initiation occurs easily. obtained degradation process endothermic nature. High energetic densities (10,688.9MJ/m3) Fuel Value Indices (255.5MJ/m3⋅%) attributable higher heating value (19.5MJ/kg).

Language: Английский

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Optimization of elephant dung green fuel briquette production using a low-pressure densification technique and its characterizations, and emissions

Bioresource Technology Reports, Journal Year: 2023, Volume and Issue: 21, P. 101328 - 101328

Published: Jan. 4, 2023

Language: Английский

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Sustainable Solid Biofuel Production: Transforming Sewage Sludge and Pinus sp. Sawdust into Resources for the Circular Economy

Sustainability, Journal Year: 2024, Volume and Issue: 16(11), P. 4554 - 4554

Published: May 27, 2024

The lack of adequate sanitation in Brazil overloads the health system and causes deaths. utilization sewage sludge hinders advancements water treatment. This study aimed to assess feasibility producing briquettes by blending with Pinus sp. sawdust. was sourced from a treatment facility, while sawdust obtained sawmill. Elemental analysis, proximate calorific value were evaluated for both biomasses. Briquettes manufactured using hydraulic press, varying proportion 0% 95%, followed thermogravimetric analysis. exhibited higher carbon, oxygen, hydrogen content, whereas contained more nitrogen sulfur. had greater fixed carbon volatile matter, value, ash content. Samples content showed better thermal resistance, 100% retaining 63.3% mass after exposure 950 °C. increased energy density. Considering elevated nitrogen, sulfur, should be limited 5% briquette production research underscores significant avenue sustainable bioenergy production.

Language: Английский

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Energy Sources Used in Food Preparation and Impacts on Climate Change

Green energy and technology, Journal Year: 2023, Volume and Issue: unknown, P. 1 - 22

Published: Jan. 1, 2023

Language: Английский

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Wood waste pellets from sustainable forest management in the Amazon as an energy source

Caderno Pedagógico, Journal Year: 2024, Volume and Issue: 21(6), P. e4769 - e4769

Published: June 6, 2024

Waste from sustainable management activities in Amazonia can be an important source of biomass for energy generation. This study aimed to investigate the production and characteristics pellets manufactured residual species Dinizia excelsa, Parkia spp., Licania canescens. The were produced separately by a laboratory pelletizer with capacity 30 kg h-1 matrix diameter 6 mm. A total 1.5 homogeneous was each type biomass. evaluated according their physical energetic properties. properties varied between waste analyzed (4884 kcal kg-1 D. excelsa 4650 spp.). Greater emphasis should placed on 100DE, which presented higher values fixed carbon (20.7%), bulk density (692.55 m-3) low ash content (0.30%).

Language: Английский

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Plant-Based Solutions for Non-Productive Sites Useful in the Management of Dry Land

Plants, Journal Year: 2023, Volume and Issue: 12(3), P. 537 - 537

Published: Jan. 24, 2023

The article presents an overview of research conducted in recent years, i.e., from 2004 until now. study has been prompted by the threat drought over large land areas which, as a result current climate change, may lead to desertification dry and hot regions world. For same reason, farmland are affected stress. At time, rising air temperatures significant intensification evaporation gradual increase soil salinity. This applies particular acres farmland, forested areas, green cities, well degraded or brownfields. As crop stability is threatened, food base world's population at risk and, additionally, industrial districts, people's health decline. Due these multistress conditions for plant growth, we propose review literature which addresses possibility counteracting unfavorable phenomena through appropriate selection species when only applicable, also specific agroecological treatments. A herbaceous woody plants useful cultivation on saline marginal lands was proposed.

Language: Английский

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The characteristics and emissions of low-pressure densified torrefied elephant dung fuel briquette

International Journal of Renewable Energy Development, Journal Year: 2023, Volume and Issue: 12(4), P. 797 - 807

Published: July 18, 2023

Elephant dung is the camp's undigested fiber waste. For more effective waste management, conversion of to torrefied solid and formation into fuel briquettes, as well their properties, were investigated. The was improved through torrefaction at 280ºC for 150 sec in a pilot-scale reactor with feeding rate 600 g/h. elephant had 17 MJ/kg HHV, yield 79%, fixed carbon content 20%. A mixture dung, binder, water compressed 40 bars density 860 kg/m3, or 12 GJ/m3. Their H/C O/C atomic ratios range typical biomass. However, due moisture over 7%, HHV briquettes below MJ/kg. Moreover, thermal efficiency less than 7% durability issues, despite having great ratio stability. combustion these resulted 850 ppm CO. To improve combustibility this biofuel, it recommended develop production process suitable stove specifically briquettes.

Language: Английский

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Perfil térmico e emissões gasosas na cocção de pizzas mediante o uso de madeira como combustível

Published: May 22, 2023

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Densified biochar capsules as an alternative to conventional seedings

Journal of Environmental Management, Journal Year: 2023, Volume and Issue: 348, P. 119305 - 119305

Published: Oct. 21, 2023

Language: Английский

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