Upgrading properties of biochar fuel derived from cassava rhizome via torrefaction: Effect of sweeping gas atmospheres and its economic feasibility

Nakason, Kamonwat; Khemthong, Pongtanawat; Kraithong, Wasawat; Chukaew, Parinvadee; Panyapinyopol, Bunyarit; Kitkaew, Duangta; Pavasant, Prasert

doi:10.1016/j.csite.2020.100823

Cited by 25 publications

(9 citation statements)

References 28 publications

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“…The results of the proximate analysis measured (%, d.b.) in terms of AC, VM , and FC, of raw biomass and its biochar obtained at different experimental levels in 23 The ash content of biochar was found in range from 6.85 to 15.95 and 6.93 to 16.76 at (250 0 c, 120 min ; 500 0 c, 180 min) temperature and residence time by using cotton and castor stalks respectively as shown in Table 2. Ash content of biochar increased with increased in temperature, 26 The similar trends was found as for different biomass material biochar ash content was increased with increased in temperature.…”

Section: Resultsmentioning

confidence: 95%

Influence of Temperature on the Production of Biochar from Cotton and Castor Feed Stalk in a Pyrolysis Process

Dobariya

Gojiya

Makavana

et al. 2022

Curr. World Environ

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Among the various applications of cotton and castor biomass, application of biochar to soil is gaining popularity due to increased crop productivity and CO2 sequestration. The slow pyrolysis of cotton and castor stalk at 250-500 °C was investigated in this study to characterize in terms of production of biochar, bio oil, pyrogases and its chemical properties by using batch type Pyrolyser. The biochar showed a general trend of decreasing biochar production and increasing bio oil, pyro gas production, PH, and EC and along with increasing temperature, and CEC decreased with increasing temperature. Out of all the experiments levels the best quality of biochar was found at 500 °C temperature and 180 minutes’ residence time for the chopped cotton and castor biomass as feed stalk.

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Section: Resultsmentioning

confidence: 95%

Influence of Temperature on the Production of Biochar from Cotton and Castor Feed Stalk in a Pyrolysis Process

Dobariya

Gojiya

Makavana

et al. 2022

Curr. World Environ

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“…In this study, properties of the pristine CR were similar to those reported in our previous study. 25,29 Table 1 tabulates that alkaline pretreatment decreased the hemicellulose and lignin contents noticeably, which was caused by depolymerization through cleaving the α-ether linkages between lignin and hemicellulose as well as ester bonds between lignin and/or hemicellulose and hydroxycinnamic acid. 30 Decreasing hemicellulose and lignin contents affected the pretreated CR containing high cellulose content.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Sequential Production of Levulinic Acid and Supercapacitor Electrode Materials from Cassava Rhizome through an Integrated Biorefinery Process

Phachwisoot

Nakason

Chanthad

et al. 2021

ACS Sustainable Chem. Eng.

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In this study, thesequential production of levulinic acid (LA) and supercapacitor electrode materials from cassava rhizome (CR) was investigated through an integrated biorefinery process. The CR was pretreated in KOH solution at 120 °C for 1 h before valorization to LA via a catalytic hydrothermal process in 0.1–0.7 M HCl solution at 150–200 °C for 1–3 h. The maximum LA yield (19.62 wt %) was obtained under experimental conditions of 200 °C for 1 h in 0.4 M HCl. Thereafter, the hydrochar coproduct was further converted into porous activated carbon (AC) for use in supercapacitor electrodes. The AC was produced through a chemical activation process at 800 °C for 2 h using ZnCl2 and melamine as an activating agent and nitrogen source, respectively. The best AC sample for producing electrodes was obtained when using a hydrochar/ZnCl2/melamine ratio of 1:3:1. This species had the maximum specific capacitance (SC) of 192.5 and 173.0 F g–1 for three- and two-electrode systems, respectively. Moreover, the electrode material exhibits excellent cycling stability without a reduction in SC over 10,000 cycles at 1 A g–1 current density.

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“…The energy densification (Ed), HHV improvement (HHVi), FC densification (FCd), FC recovery efficiency (FCre), fuel ratio (Fr) and energetic retention efficiency (ERE), of the biochar were determined by employing specific equations. These calculations were based on the yield and proximate analysis data associated with the biochar (Kim et al, 2016;Nakason et al, 2019). These parameters were calculated using the equations below.…”

Section: Fuel Propertiesmentioning

confidence: 99%

Harnessing the Potential of Pigeonpea and Maize Feedstock Biochar for Carbon Sequestration, Energy Generation, and Environmental Sustainability

Kumar,

Sawargaonkar,

Rani

et al. 2023

Preprint

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Crop residues in agriculture pose disposal challenges and contribute to air pollution when burned. This study aims to use pigeonpea stalks and maize biomass to produce biochar. Biochar can serve as a soil amendment for carbon sequestration and as an alternative fuel source. Pyrolysis were conducted at different temperatures (i.e., 400, 500, and 600°C) to examine the effects on physicochemical properties, fuel characteristics, and energy consumption. Higher temperatures resulted in decreased biochar yield, volatile matter, and O/C and H/C atomic ratios, while ash content and essential nutrients increased. The composition of the biomass significantly affected the yield, with PPS yielding more biochar than maize biomass at the same pyrolysis temperature. The biochar derived from both PPS and maize biomass met the essential quality criteria for carbon sequestration in soil, as established by the European Biochar Certificate (EBC) and the International Biochar Initiative (IBC). The biochar obtained through pyrolysis at 400°C demonstrated superior characteristics compared to biochar produced at other temperatures. It exhibited a higher biochar yield, with approximately 84.60% for pigeonpea and 64.85% for maize fixed carbon content. Additionally, the energy retention efficiency was higher, reaching 67.33% for pigeonpea and 42.70% for maize-derived biochar at a pyrolysis temperature of 400°C. The fixed carbon recovery efficiency was also notable at around 200.44% for PPS and 142.37% for maize biochar. Furthermore, the higher heating value (HHV) was approximately 30.75 MJ kg-1 for both, indicating their suitability as alternative solid fuels. A significant CO2 reduction potential of 84 CO2 eq kg−1 and 55 CO2 eq kg-1 was observed for pigeonpea and maize biochar, respectively. Hence, biochar is a promising and effective option for carbon sequestration, offering environmental benefits.

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Upgrading properties of biochar fuel derived from cassava rhizome via torrefaction: Effect of sweeping gas atmospheres and its economic feasibility

Cited by 25 publications

References 28 publications

Influence of Temperature on the Production of Biochar from Cotton and Castor Feed Stalk in a Pyrolysis Process

Influence of Temperature on the Production of Biochar from Cotton and Castor Feed Stalk in a Pyrolysis Process

Sequential Production of Levulinic Acid and Supercapacitor Electrode Materials from Cassava Rhizome through an Integrated Biorefinery Process

Harnessing the Potential of Pigeonpea and Maize Feedstock Biochar for Carbon Sequestration, Energy Generation, and Environmental Sustainability

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