Effect of temperature on thermochemical property and true density of torrefied coffee residue

Thermochemical and pore properties of goat-manure-derived biochars prepared from different pyrolysis temperatures

“…This physical property can be used to elucidate the thermal decomposition mechanism of biomass during the pyrolysis [15,16]. A helium displacement method with a pycnometer (Model No.…”

Effect of torrefaction temperature on energy properties of spent coffee ground

“…The decomposition of hemicellulose of SCG started from 220 to 310°C while the cellulose and lignin decomposition started from 350 to 430°C. Tsai and Liu [7] also reported similar thermal behaviour of SCG, hemicellulose and cellulose components degraded within the temperature range of 227-300°C and 300-397°C, respectively.…”

“…It was dried in a hot air oven (ULM 500, Memmert GmbH+Co.KG, Schwabach, Germany) at 105°C until the moisture content was 5±2% wb. Then, the dried SCG was sieved through a 425-µm mesh screen in order to obtain particle size lower than 425 µm based on prior research of torrefied SCG which was in the range of 400 to 500 µm [3], [7]. The sieved SCG was kept in an air-tight container at room temperature prior to further experiments.…”

“…According to previous works, the effect of torrefaction temperature on thermochemical properties and true density of torrefied coffee residue showed carbon content increased mostly at torrefied temperature range 290 to 320°C [7]. Matali et al [8] studied the influence of torrefaction process parameters on physico-chemical properties of two biomass materials, i.e.…”

Effect of production conditions on self-heating propensity of torrefied sawmill residues

“…The tempera- 98 ture at which material is stored and loaded into a vessel, pile, or 99 reactor determines self-heating behavior and risk of run-away 100 reactions. The size of piled material also influences self-heating, 101 while small piles could be safely stored, larger piles of the same 102 material could exhibit self-heating behavior due to lower capacity 103 of heat removal through pile boundaries. Water content and 104 humidity in the environment have a more complex effect.…”