Valorization of spent coffee grounds recycling as a potential alternative fuel resource in Turkey: An experimental study

Atabani, A.E.; Mercimek, S.M.; Arvindnarayan, Sundaram; Shobana, Sutha; Kumar, Gopalakrishnan; Çadır, Mehmet; Al-Muhatseb, Ala’a H.

doi:10.1080/10962247.2017.1367738

Cited by 58 publications

(38 citation statements)

References 33 publications

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“…For instance, coffee parchment is occasionally processed in thermal facilities to recover energy (ADAMS and GHALY, 2007), while spent coffee grounds have been used as fertilizer, but it was hindered due to its low N content and high acidity (VEGA et al, 2015). Besides, spent coffee grounds have also been used as a fuel due to its high calorific value (ATABANI et al, 2018) or as precursors for activated carbons preparation (REFFAS et al, 2010), biodiesels (KONDAMUDI et al, 2008, or as sorbent materials for heavy metals (KIM et al, 2014).…”

Section: Biochars Characterizationmentioning

confidence: 99%

Coffee Waste Biochar: Characterization and Zinc Adsorption From Aqueous Solution

Sertoli

Carnier

Abreu

et al. 2019

C.Sci.

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The final disposal of organic wastes has become a major challenge with increasing industrialization and population growth. Coffee wastes are examples of this, thus the conversion of these biomasses into biochar through pyrolysis could provide economic and environmental benefits, such as remediation of heavy metal polluted water. Therefore, in this work, biochar produced at 700 °C from spent coffee grounds and coffee parchment were evaluated for Zn removal from aqueous solution. Batch adsorption tests were performed with six Zn concentrations and four replicates for each material. The desorption process was performed sequentially with a pH 4.9 buffer acetic acid solution. Langmuir and Freundlich isotherms were fitted to the adsorption data using non-linear models. Batch adsorption tests showed that the adsorption was strongly dependent on biochar properties. Biochar prepared from coffee parchment was more effective at Zn binding, showing the highest adsorption capacity (0.792 mg g<sup>-1</sup>). Nevertheless, both biochars bounded Zn strongly and the adsorption process was not easily reversed.

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Section: Biochars Characterizationmentioning

confidence: 99%

Coffee Waste Biochar: Characterization and Zinc Adsorption From Aqueous Solution

Sertoli

Carnier

Abreu

et al. 2019

C.Sci.

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“…[37] The observed high level of calorific value CV (MJ·kg −1 ) could be caused by the presence of residual oil in the SCG. As the literature reports, the content of residual oil in SCG occurs at the following levels: 13.0% [38], 14.7% [34], 28.3%. Moreover, the calorific value CV (MJ·kg −1 ) of SCG residual oil occurred at an extremely high level, specifically 36.4 MJ·kg −1 [35].…”

Section: Fuel Parametersmentioning

confidence: 77%

“…If compare results of tested mechanical quality indicators, all of them proved the higher mechanical quality of bio-briquette samples produced from A + B mixtures. First monitored (calculated) indicator, the bulk density ρ (kg·m −3 ), proved a satisfactory level of all produced bio-briquette samples if compared with the requirements for commercial sale; ρ should range between 900-1200 kg·m −3 [37][38][39]. Observed data noted in Table 13 provide a clear comparison between all tested bio-briquette samples, while Table 13 provides a comparison between bulk densities ρ (kg·m −3 ) of bio-briquette fuel produced from different feedstock materials.…”

Section: Mechanical Qualitymentioning

confidence: 99%

Valorization of Bio-Briquette Fuel by Using Spent Coffee Ground as an External Additive

et al. 2019

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The present study investigates the quality changes of wood bio-briquette fuel after the addition of spent coffee ground (SCG) into the initial feedstock materials (sawdust, shavings) in different mass ratios (1:1, 1:3). Analysis of SCGs fuel parameter proved great potential for energy generation by a process of direct combustion. Namely, level of calorific value (GCV = 21.58 MJ·kg −1 ), of ash content (Ac = 1.49%) and elementary composition (C = 55.49%, H = 7.07%, N = 2.38%, O = 33.41%) supports such statement. A comparison with results of initial feedstock materials exhibited better results of SCG in case of its calorific value and elementary composition. Bulk density ρ (kg·m −3 ) and mechanical durability DU (%) of bio-briquette samples from initial feedstock materials were following for sawdust: ρ = 1026.39 kg·m −3 , DU = 98.44% and shavings: ρ = 1036.53 kg·m −3 , DU = 96.70%. The level of such mechanical quality indicators changed after the addition of SCG. Specifically, SCG+sawdust mixtures achieved ρ = 1077.49 kg·m −3 and DU = 90.09%, while SCG + shavings mixtures achieved ρ = 899.44 kg·m −3 and DU = 46.50%. The addition of SCG increased wood bio-briquettes energy potential but decreased its mechanical quality. Consequently, the addition of SCG in wood bio-briquette has advantages, but its mass ratio plays an important key role.Energies 2020, 13, 54 2 of 15 economics, politics, and the trade of many developing countries. The coffee production industry, i.e., plant cultivation, cherries harvest, bean processing, product packaging, sale marketing, and final product transportation, offers job opportunities for millions of people [5].Brazil belongs to the top countries in coffee production, as well as Vietnam, Indonesia, and Colombia. Together those countries generate more than 50% of the world's coffee production. Specific statistical data provided by the Food and Agriculture Organization of the United Nations (FAO) and by the International Coffee Organization (ICO) related to the coffee industry in the last years are expressed in Table 1.

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“…Since SCG contain a high percentage of carbohydrates, proteins and lipids, they have been investigated as a source of biogas production [38]. Atabani et al [39] suggested a research approach utilizing organic solvent extractives for biodiesel and glycerin production from SCG, while the remaining solids fraction was used as feedstock for ethanol fermentation or biogas production. However, specific attempts to produce biogas were not performed via sequentially exploiting solid fraction remaining after extracting both lignin and lipids by organosolv treatment.…”

Section: Digestibility Of Scg Residues In a Batch Anaerobic Digestermentioning

confidence: 99%

Sequential Production of Lignin, Fatty Acid Methyl Esters and Biogas from Spent Coffee Grounds via an Integrated Physicochemical and Biological Process

et al. 2019

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Spent coffee grounds (SCG) are one of the lignocellulosic biomasses that have gained much attention due to their high potential both in valorization and biomethane production. Previous studies have reported single processes that extract either fatty acids/lignin or biogas. In this study, an integrated physicochemical and biological process was investigated, which sequentially recovers lignin, fatty acid methyl esters (FAME) and biogas from the residue of SCG. The determination of optimal conditions for sequential separation was based on central composite design (CCD) and response surface methodology (RSM). Independent variables adopted in this study were reaction temperature (86.1–203.9 °C), concentration of sulfuric acid (0.0–6.4%v/v) and methanol to SCG ratio (1.3–4.7 mL/g). Under determined optimal conditions of 161.0 °C, 3.6% and 4.7 mL/g, lignin and FAME yields were estimated to be 55.5% and 62.4%, respectively. FAME extracted from SCG consisted of 41.7% C16 and 48.16% C18, which makes the extractives appropriate materials to convert into biodiesel. Results from Fourier transform infrared spectroscopy (FT-IR) further support that lignin and FAME extracted from SCG have structures similar to previously reported extractives from other lignocellulosic biomasses. The solid residue remaining after lignin and FAME extraction was anaerobically digested under mesophilic conditions, resulting in a methane yield of 36.0 mL-CH4/g-VSadded. This study is the first to introduce an integrated resource recovery platform capable of valorization of a municipal solid waste stream.

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Valorization of spent coffee grounds recycling as a potential alternative fuel resource in Turkey: An experimental study

Cited by 58 publications

References 33 publications

Coffee Waste Biochar: Characterization and Zinc Adsorption From Aqueous Solution

Coffee Waste Biochar: Characterization and Zinc Adsorption From Aqueous Solution

Valorization of Bio-Briquette Fuel by Using Spent Coffee Ground as an External Additive

Sequential Production of Lignin, Fatty Acid Methyl Esters and Biogas from Spent Coffee Grounds via an Integrated Physicochemical and Biological Process

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