Preparation and fuel properties of biochars from the pyrolysis of exhausted coffee residue

Tsai, Wen‐Tien; Liu, Sii-Chew; Hsieh, Chi-Ying

doi:10.1016/j.jaap.2011.09.010

Cited by 155 publications

(70 citation statements)

References 22 publications

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“…The observed trend for coffee husk is equivalent to the one that has been most reported in the literature, ie the yield in biofuels decreases between pyrolysis, HTC, and HTL, respectively [10]. The results obtained were higher than those obtained by Li et al [8] and Tsai et al [11]. Which reported yields between 27-39% w/w.…”

Section: Study Of the Performance Of Products For The Different Thermsupporting

confidence: 73%

Valorization of Waste From Agro-Industry Using Thermo-Chemical Treatments

Strubinger

Oyoque

González

et al. 2017

WIT Transactions on Ecology and the Environment

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The increasing generation of solid waste and the interest in renewable and alternative energies has become goals in recent years. The objective of this work was to apply thermochemical conversion processes such as pyrolysis, and hydrothermal conversion (HTC and HTL) into waste from the industry such as the coffee husk (CH), and orange peel (OP) in order to determine their performance towards the production of biocarbon, distribution of organic liquid products, as well as characterization of the bio carbon, obtained. Pyrolysis treatments were carried out with a rapid heating ramp up to 500°C, HTC at 250C, and HTL at 280C for 4 hours in triplicates for each biomass. The highest bio carbon yield for OP was obtained by HTC with 36% w/w and for CH the pyrolysis with 40% w/w. The biocarbon obtained from the OP by pyrolysis has a high potential as fuel with a higher heating value (HHV) of 26,3 MJ/kg. On the other hand, in the CH processed by HTC and HTL reported HHV values of 23 MJ/kg. The processing by HTC and HTL favours the formation of biocarbon with high iodine and methylene blue (MB) indices compared to a commercial carbon, for the OP the values obtained are: 343 and 416 mg I2/g, and 174 and 188 mg MB/g whereas for CH 432 and 427 mg I2/g, and 264 and 173 mg AM/g. In relation to liquid organic products, the processing of OP induces the formation of organic compound fractions in the gasoline and diesel range (GRO+DRO) with values between 75-78% when the heat treatments are employed. For the CH, the highest fraction of GRO+DRO was obtained from the pyrolysis with 81%. The HTC obtained the lowest sulphur content for both processed biomass, where the values did not exceed 0.066% w/w.

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Section: Study Of the Performance Of Products For The Different Thermsupporting

confidence: 73%

Valorization of Waste From Agro-Industry Using Thermo-Chemical Treatments

Strubinger

Oyoque

González

et al. 2017

WIT Transactions on Ecology and the Environment

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“…Wide feedstock's have been used in the production of biochar [34], such as bio energy crops (willows, miscan thus, and switch grass) [36] [37], forest residues (sawdust, grain crops, and nut shells) [38], organic waste (green yard waste and animal manure) [39] [40], agricultural waste [41]- [46], kitchen waste, and sewage sludge [47].…”

Section: Generation Of Charcoal or Biocharmentioning

confidence: 99%

Review Paper: The Fundamentals of Biochar as a Soil Amendment Tool and Management in Agriculture Scope: An Overview for Farmers and Gardeners

Shareef¹,

Zhao²

2017

JACEN

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Improving the soil and biomass with coal is estimated at the international level as a way to enhance soil productiveness, fertility and also to mitigate climate change. Biochar employed to improve land scope and impound carbon, is attracting a great deal of attention. Its characteristics of chemical, physical and biological properties, containing big surface area, CEC (Cation Exchange Capacity), high water-holding capacity, size of pore, volume, distribution, and element composition, affect its recognized influences, particularly on microbial communities. These are discovered in the agriculture lands, lands remediation and composting. However, incomplete information existed about biochar for several farmers or peasants in agriculture scope. Therefore, farmers or peasants and gardeners are facing new opportunities and defiance each day, from feeding global extending and expanding population, whilst meeting severe new emissions requirements, to create more food on fewer land area while reducing their environmental emissions. Widespread application and utilization of biochar in agricultural scope, forestry production, energy, environmental protection and additional areas, has interested awareness by scientists and investigators inside and/or outside the country. The objective of this paper is to provide a guide for the farmers or peasants and gardeners with an essential information about biochar and what the ability of biochar can be achieved in the soil, and which can provide the scientific reference for the biochar application, and to get high yield and good quality of crops in all of different soils.

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“…The disposal of the GCW should be properly managed in order to turn it into value-added products. GCW has been used for biofuel production [4], as source of sugar [5], as precursor for production of activated carbon [6,7], as compost [8], and as absorbent for metal ions removal [9]. Previous work done on modified ground coffee waste showed enhancement of mechanical properties compared to untreated ground coffee waste composite [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Alkaline Treatment and Fiber Content on the Physical, Thermal, and Mechanical Properties of Ground Coffee Waste/Oxobiodegradable HDPE Biocomposites

Tan

Kuan

Lee

2017

International Journal of Polymer Science

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Effect of alkali treatment on ground coffee waste/oxobiodegradable HDPE (GCW/oxo-HDPE) composites was evaluated using 5%, 10%, 15%, and 20% volume fraction of GCW. The composites were characterized using structural (Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM)), thermal (thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC)), mechanical (tensile and impact test) properties, and water absorption. FTIR spectrum indicated the eradication of lipids, hemicellulose, lignin, and impurities after the treatments lead to an improvement of the filler/matrix interface adhesion. This is confirmed by SEM results. Degree of crystallinity index was increased by 5% after the treatment. Thermal stability for both untreated and treated GCW composites was alike. Optimum tensile result was achieved when using 10% volume fraction with enhancement of 25% for tensile strength and 24% for tensile modulus compared to untreated composite. Specific tensile strength and modulus had improved as the composite has lower density. The highest impact properties were achieved when using 15% volume fraction that lead to an improvement of 6%. Treated GCW composites show better water resistance with 57% improvement compared to the untreated ones. This lightweight and ecofriendly biocomposite has the potential in packaging, internal automotive parts, lightweight furniture, and other composite engineering applications.

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Preparation and fuel properties of biochars from the pyrolysis of exhausted coffee residue

Cited by 155 publications

References 22 publications

Valorization of Waste From Agro-Industry Using Thermo-Chemical Treatments

Valorization of Waste From Agro-Industry Using Thermo-Chemical Treatments

Review Paper: The Fundamentals of Biochar as a Soil Amendment Tool and Management in Agriculture Scope: An Overview for Farmers and Gardeners

Characterization of Alkaline Treatment and Fiber Content on the Physical, Thermal, and Mechanical Properties of Ground Coffee Waste/Oxobiodegradable HDPE Biocomposites

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