A study on torrefaction of Laminaria japonica

Uemura, Yoshimitsu; Matsumoto, Ryusaku; Saadon, Shazleen; Matsumura, Yukihiko

doi:10.1016/j.fuproc.2015.05.016

Cited by 45 publications

(10 citation statements)

References 35 publications

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“…The component, proximate, and ultimate analyses of CR when compared with other studies were as listed in Table 1. The CR sample used in this work showed proximate and ultimate analysis values comparable with previous works [3,5]. The CR raw materials have less fixed carbon (10-20 wt%), more volatiles (65-81 wt%).…”

Section: The Solid Fuel Properties Of Torrefied Crsupporting

confidence: 79%

“…Hemicellulose decomposes within a temperature range of 225-325°C, cellulose within 270-350°C, and lignin gradually over a range of 250-500°C [1]. Therefore, torrefaction may render the biomass into an attractive solid fuel with properties for further thermal conversion processes along with the ease of long-distance transportation, long term storage, and palletization [2,3]. Cassava rhizome (CR) is the woody part between the stalk and the tapioca tuberous root.…”

Section: Introductionmentioning

confidence: 99%

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The effect of thermal pre-treatment on cassava rhizome properties for utilizing as green fuel in gasification

2020

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Cassava rhizome (CR) was torrefied to provide superior solid fuel quality for further gasification process. The torrefaction was carried out in the absence of oxygen at 220, 240, 260, and 280°C with a fixed residence time. Solid fuel after torrefaction has a higher calorific value from that of reduced volatile matters. The optimum energy yield of torrefied CR is 88.16% at 260°C. The heating value of 20.86 MJ/kg for a torrefied product can be achieved compared to 15.37 MJ/kg for untreated CR. The subsequent gasification of torrefied CR at temperature of 800°C yielded the highest gas product of 65 wt.%. The carbon and hydrogen conversions into CO and H2 were 14.28% and 29.95%, respectively. Synthesis gas (syngas) from the conversion maintained the H2/CO ratio of around 2–2.50, which is suitable for the Fischer–Tropsch process or can be used as the feedstock for petrochemical industry.

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Section: The Solid Fuel Properties Of Torrefied Crsupporting

confidence: 79%

Section: Introductionmentioning

confidence: 99%

The effect of thermal pre-treatment on cassava rhizome properties for utilizing as green fuel in gasification

2020

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“…1 [8]. The reactor was purged with 10 mL/min of N2 [20] for 3 min to remove impurities in the reactor. After that, the temperature was set to the desired temperature (from 220 until 260 °C with 20 °C increment).…”

Section: Methodsmentioning

confidence: 99%

Torrefaction of Food Waste as a Potential Biomass Energy Source

et al. 2019

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Food waste (FW) represents a major component of municipal solid waste (MSW) in Malaysia which causes negative impact due to poor waste management. One of a promising strategy to reduce the FW is to convert the FW to energy sources through thermal pre-treatment process which known as torrefaction. The aim of this study is to investigate the improvement of chemical properties and energy potential of the torrefied FW. The torrefaction of FW was conducted using tubular reactor to evaluate the influence of temperature (220 to 260°C) and residence time (15 to 60 min) on the quality of torrefied FW. The quality of torrefied FW were evaluated using ultimate analysis, proximate analysis, mass yield, energy yield and higher heating value (HHV). From ultimate analysis, the carbon, C was increased, however the hydrogen, H and oxygen, O decreased across the torrefaction temperature and residence time. This lead to the increasing of HHV with the increasing of temperature and time. The HHV of the dried FW was improved from 19.15 to 23.9 MJ/kg after being torrefied at 260°C for 60 min. The HHV indicated that FW has the potential to be utilized as an energy source.

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“…As a result, the biomass reached the devolatilization peak at lower temperatures (between 266 and 270 • C) compared to raw samples (287.7 • C). The efficiency of torrefaction is linked to temperature and time reaction [77]. According to Chen et al [78], 300 • C and 30 min increased the final HHV content in Chlamydomonas sp.…”

Section: Microalgal Torrefactionmentioning

confidence: 99%

The Application of Catalytic Processes on the Production of Algae-Based Biofuels: A Review

2020

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Over the last decades, microalgal biomass has gained a significant role in the development of different high-end (nutraceuticals, colorants, food supplements, and pharmaceuticals) and low-end products (biodiesel, bioethanol, and biogas) due to its rapid growth and high carbon-fixing efficiency. Therefore, microalgae are considered a useful and sustainable resource to attain energy security while reducing our current reliance on fossil fuels. From the technologies available for obtaining biofuels using microalgae biomass, thermochemical processes (pyrolysis, Hydrothermal Liquefaction (HTL), gasification) have proven to be processed with higher viability, because they use all biomass. However, due to the complex structure of the biomass (lipids, carbohydrates, and proteins), the obtained biofuels from direct thermochemical conversion have large amounts of heteroatoms (oxygen, nitrogen, and sulfur). As a solution, catalyst-based processes have emerged as a sustainable solution for the increase in biocrude production. This paper’s objective is to present a comprehensive review of recent developments on the catalyst-mediated conversion of algal biomass. Special attention will be given to operating conditions, strains evaluated, and challenges for the optimal yield of algal-based biofuels through pyrolysis and HTL.

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A study on torrefaction of Laminaria japonica

Cited by 45 publications

References 35 publications

The effect of thermal pre-treatment on cassava rhizome properties for utilizing as green fuel in gasification

The effect of thermal pre-treatment on cassava rhizome properties for utilizing as green fuel in gasification

Torrefaction of Food Waste as a Potential Biomass Energy Source

The Application of Catalytic Processes on the Production of Algae-Based Biofuels: A Review

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