Characterization of Biochar from Switchgrass Carbonization

Sadaka, Sammy; Sharara, Mahmoud A.; Ashworth, Amanda J.; Keyser, Patrick D.; Allen, Fred L.; Wright, Andrew B.

doi:10.3390/en7020548

Cited by 136 publications

(61 citation statements)

References 36 publications

(40 reference statements)

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“…The heating value is comparable to the heating value of switchgrass derived biochar reported by (Sadaka et al 2014).…”

Section: Basic Biochar Characteristicssupporting

confidence: 72%

Co-production of Biochar, Bio-oil, and Syngas from Tamarix chinensis Biomass under Three Different Pyrolysis Temperatures

Irfan¹,

Lin²,

Yue³

et al. 2016

BioResources

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a Pyrolysis of Tamarix chinensis feedstock was performed at 300, 500, and 700 °C to investigate the characteristics of biochar, bio-oil, and syngas. Biochar yield decreased and syngas yield increased as the pyrolysis temperature increased. The biochar was characterized for elemental composition, surface, and adsorption properties. Values of pH, electrical conductivity (EC), ash, C, K, Na, and basic functional group contents all increased as the pyrolysis temperature increased, whereas P, Ca, Mg, and acidic functional groups decreased. The methylene blue adsorption capacity values were 1.78, 2.08, and 1.96 (mg g -1 ) and iodine 256.48, 255.51 and 76.42 (mg g -1 ) for the biochars produced at 300, 500, and 700 °C, respectively. The C and H contents in bio-oil ranged from 66 to 62% and 8 to 7%, while O changed from 25 to 29% when temperature was increased from 300 to 700 °C. The concentration of hydrocarbon gases, such as ethane, ethylene, propane, and acetylene, increased as the pyrolysis temperature increased. The sum of CO and CO2 occupied great percentage of the total gas, while the H2 concentration increased markedly to a maximum of 16% at 500 °C. Thus, T. chinensis is a potential feedstock for biochar and bioenergy production.

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“…The heating value is comparable to the heating value of switchgrass derived biochar reported by (Sadaka et al 2014).…”

Section: Basic Biochar Characteristicssupporting

confidence: 72%

Co-production of Biochar, Bio-oil, and Syngas from Tamarix chinensis Biomass under Three Different Pyrolysis Temperatures

Irfan¹,

Lin²,

Yue³

et al. 2016

BioResources

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“…Moreover, numerous studies on WB carbonization [11][12][13][14][15] have shown that the properties of carbonized biomass strongly depend on its origin (tree species), moisture content, treatment time, and shape. Thus, the stable production of carbonized biomass with desired properties requires a rapid analysis of fuel properties, which have to be reflected in the operating conditions of the production process in a timely manner.…”

Section: Introductionmentioning

confidence: 99%

Expedient Prediction of the Fuel Properties of Carbonized Woody Biomass Based on Hue Angle

et al. 2018

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Woody biomass co-firing-based power generation can reduce CO 2 emissions from pulverized coal boilers. Carbonization of woody biomass increases its calorific value and grindability, thereby improving the co-firing ratio. Carbonized biomass fuel properties depend on moisture, size and shape of feedstock, and carbonization conditions. To produce carbonized biomass with stable fuel properties, the carbonization conditions should be set according to the desired fuel properties. Therefore, we examined color changes accompanying woody biomass carbonization and proposed using them for rapid evaluation of fuel properties. Three types of woody biomasses were carbonized at a test facility with a capacity of 4 tons/day, and the fuel properties of the obtained materials were correlated with their color defined by the L * a * b * model. When fixed carbon, an important fuel property for carbonization, was 25 wt % or less, we observed a strong negative correlation, regardless of the tree species, between the hue angle, h ab , and fixed carbon. The h ab and fixed carbon were correlated even when the fixed carbon exceeded 25 wt %; however, this correlation was specific to the tree species. These results indicate that carbonized biomass fuel properties such as fixed carbon can be estimated rapidly and easily by measuring h ab .

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“…Carbonization experiments with different biomass materials have shown that increased holding time results in lower mass yield during carbonization (Sadaka et al 2014). The decomposition of cellulose and lignin are two constituents that are significantly affected by holding time.…”

Section: Mass Yieldmentioning

confidence: 99%

“…Sadaka et al (2014) and Shaaban et al (2014) have shown that, holding time significantly changes the elemental composition of biomass. However, the produced biochars from SOMR and tSOMR had very similar ultimate and proximate analysis characteristics.…”

Section: Effect Of Torrefaction On the Carbonization Characteristics mentioning

confidence: 99%

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Effects of Torrefaction on Carbonization Characteristics of Solid Olive Mill Residue

Cellatoğlu

İlkan

2016

BioResources

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Torrefaction is an important biomass pretreatment method that impacts fuel characteristics of biomass, specifically during the torrefaction process. Besides improving the fuel characteristics of biomass, torrefaction also contributes to increased quality of liquid and gaseous energy carriers obtained from fast pyrolysis and gasification. In this study, the effect of torrefaction on the solid energy carrier biochar, produced by carbonization, was studied by using solid olive mill residue (SOMR) as raw biomass. The carbonization characteristics of SOMR and torrefied SOMR (tSOMR) were compared by using ultimate and proximate analysis results. The higher heating value (HHV) and energy yields of biochars produced from SOMR and tSOMR were compared. The results showed that torrefaction contributed to the reduction of energy given to the biomass during the carbonization process by decreasing the holding time.

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Characterization of Biochar from Switchgrass Carbonization

Cited by 136 publications

References 36 publications

Co-production of Biochar, Bio-oil, and Syngas from Tamarix chinensis Biomass under Three Different Pyrolysis Temperatures

Co-production of Biochar, Bio-oil, and Syngas from Tamarix chinensis Biomass under Three Different Pyrolysis Temperatures

Expedient Prediction of the Fuel Properties of Carbonized Woody Biomass Based on Hue Angle

Effects of Torrefaction on Carbonization Characteristics of Solid Olive Mill Residue

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