Synthesis and characterization of exfoliated biochar from four agricultural feedstock

  • Shuvrodeb Roy
  • Uday Kumar
  • Pradip BhattacharyyaEmail author
Short Research and Discussion Article


Highly porous biochar (BC) structures have been prepared from inexpensive biomasses like rice straw, bamboo, sugarcane waste, and corn cob via a slow pyrolysis technique in nitrogenous atmosphere. A surface engineering technique has been applied to enhance the surface-to-volume ratio of each biochar sample and finally compared its characteristics through standard surface and elemental characterization techniques, viz. CHN (carbon, hydrogen, and nitrogen), FTIR (Fourier transform infrared spectroscopy), BET (Brunauer–Emmett–Teller), and SEM (scanning electron microscopy). All the biochar samples were observed to be highly carbonized and aromatized. Exfoliated structures were found to contain more elemental carbon (34.14–77.32%) than its native form (30.92–74.46%). Aromatic hydrocarbon, aromatic C=C, aromatics, aliphatic C–O, aliphatic hydrocarbon, and H-bonded OH groups were found to predominate in the surface of biochar structures independent of their precursor composition and extent of exfoliation. SEM micrographic images clearly ensured about the unoriented sheets like the morphology of different biochar samples. Although no significant structural difference was found to exist depending on their precursor compositions, quantitative enhancement of porosity was found to be observed after exfoliation. Both native (240.65 m2/g) and exfoliated (712.89 m2/g) biochars derived from sugarcane wastes were observed to have a maximum surface area in comparison to the biochars derived from rice straw (native, 22.08 m2/g; exfoliated, 29.92 m2/g), bamboo (native, 42.08 m2/g; exfoliated, 248.38 m2/g), and corn cob (native, 136.62 m2/g; exfoliated, 221.71 m2/g). Exfoliated biochars were found to be consistently more potent in comparison to its native form as per our comparative characterizations performed so far.


Biochar Agricultural feedstock Exfoliation Pyrolysis technique Surface area 


Funding information

Shuvrodeb Roy is thankful to the Ministry of Social Justice and Empowerment, Govt. of India and University Grants Commission (UGC) for providing him fellowship. The authors are thankful to the Indian Statistical Institute for providing financial assistance.

Supplementary material

11356_2018_4117_MOESM1_ESM.doc (328 kb)
ESM 1 (DOC 328 kb)


  1. Chen Z, Liu T, Tang J, Zheng Z, Wang H, Shao Q, Chen G, Li Z, Chen Y, Zhu J, Feng T (2018) Characteristics and mechanisms of cadmium adsorption from aqueous solution using lotus seedpod-derived biochar at two pyrolytic temperatures. Environ Sci Pollut Res 25:11854–11866CrossRefGoogle Scholar
  2. Crombie K, Masek O, Sohi SP, Brownsort P, Cross A (2013) The effect of pyrolysis conditions on biochar stability as determined by three methods. Glob Change Biol Bioenergy 5:122–131CrossRefGoogle Scholar
  3. Domingues RR, Trugilho PF, Silva CA, de Melo ICNA, Melo LCA, Magriotis ZM, SaÂnchez-Monedero MA (2017) Properties of biochar derived from wood and high-nutrient biomasses with the aim of agronomic and environmental benefits. PLoS One 12(5):e0176884CrossRefGoogle Scholar
  4. Dorez G, Ferry L, Sonnier R, Taguet A, Lopez-Cuesta JM (2014) Effect of cellulose, hemicellulose and lignin contents on pyrolysis and combustion of natural fibers. J Anal Appl Pyrol 107:323–331CrossRefGoogle Scholar
  5. Egene CE, Van Poucke R, Ok YS, Meers E, Tack FMG (2018) Impact of organic amendments (biochar, compost and peat) on Cd and Zn mobility and solubility in contaminated soil of the Campine region after three years. Sci Total Environ 626:195–202CrossRefGoogle Scholar
  6. Genovese M, Jiang J, Lian K, Holm N (2015) High capacitive performance of exfoliated biochar nanosheets from biomass waste corn cob. J Mater Chem A 3:2903–2913CrossRefGoogle Scholar
  7. ICAR (2011) Hand book of agriculture, 6th edn. Indian Council of Agricultural Research, New DelhiGoogle Scholar
  8. Jin S, Chen H (2007) Near-infrared analysis of the chemical composition of rice straw. Ind Crop Prod 26:207–211CrossRefGoogle Scholar
  9. Lee JW, Kidder M, Evans BR, Paik S, Buchanan AC, Garten CT, Brown RC (2010) Characterization of biochars produced from cornstovers for soil amendment. Environ Sci Technol 44:7970–7974CrossRefGoogle Scholar
  10. Leng L, Huang H, Li H, Li J, Zhou Z (2019) Biochar stability assessment methods: a review. Sci Total Environ 647:210–222CrossRefGoogle Scholar
  11. Lu K, Yang X, Shen J, Robinson B, Huang H, Liu D, Bolan N, Pei J, Wang H (2014) Effect of bamboo and rice straw biochars on the bioavailability of Cd, Cu, Pb and Zn to Sedum plumbizincicola. Agric Ecosyst Environ 191:124–132CrossRefGoogle Scholar
  12. Marris E (2006) Black is the new green. Nature 442:624–626CrossRefGoogle Scholar
  13. Mubarik S, Saeed A, Athar MM, Iqbal M (2016) Characterization and mechanism of the adsorptive removal of 2, 4, 6-trichlorophenol by biochar prepared from sugarcane baggase. J Ind Eng Chem 33:115–121CrossRefGoogle Scholar
  14. Peng XYLL, Ye LL, Wang CH, Zhou H, Sun B (2011) Temperature-and duration-dependent rice straw-derived biochar: characteristics and its effects on soil properties of an Ultisol in southern China. Soil Tillage Res 112:159–166CrossRefGoogle Scholar
  15. Sun Y, Gao B, Yao Y, Fang J, Zhang M, Zhou Y, Chen H, Yang L (2014) Effects of feedstock type, production method, and pyrolysis temperature on biochar and hydrochar properties. Chem Eng J 240:574–578CrossRefGoogle Scholar
  16. Tan XF, Liu YG, Gu YL, Xu Y, Zeng GM, Hu XJ, Liu SB, Wang X, Liu SM, Li J (2016) Biochar-based nano-composites for the decontamination of wastewater: a review. Bioresour Technol 212:318–333CrossRefGoogle Scholar
  17. Uchimiya M, Wartelle LH, Klasson KT, Fortier CA, Lima IM (2011) Influence of pyrolysis temperature on biochar property and function as a heavy metal sorbent in soil. J Agric Food Chem 59:2501–2510CrossRefGoogle Scholar
  18. Van Zwieten L, Kimber S, Morris J, Chan K, Downie A, Rust J, Joseph S, Cowie A (2010) Effects of biochar from slow pyrolysis of papermill waste on agronomic performance and soil fertility. Plant Soil 327:235–246CrossRefGoogle Scholar
  19. Wang B, Gao B, Fang J (2017) Recent advances in engineered biochar productions and applications. Crit Rev Environ Sci Technol 47:2158–2207CrossRefGoogle Scholar
  20. Yao Y, Gao B, Chen J, Zhang M, Inyang M, Li Y, Alva A, Yang L (2013) Engineered carbon (biochar) prepared by direct pyrolysis of Mg-accumulated tomato tissues: characterization and phosphate removal potential. Bioresour Technol 138:8–13CrossRefGoogle Scholar
  21. Zhang C, Liu L, Zhao M, Rong H, Xu T (2018) The environmental characteristics and applications of biochar. Environ Sci Pollut Res 25:21525–21534CrossRefGoogle Scholar

Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Shuvrodeb Roy
    • 1
  • Uday Kumar
    • 2
  • Pradip Bhattacharyya
    • 3
    Email author
  1. 1.Agricultural and Ecological Research UnitIndian Statistical InstituteKolkataIndia
  2. 2.Department of PhysicsNational Institute of TechnologyJamshedpurIndia
  3. 3.Agricultural and Ecological Research UnitIndian Statistical InstituteGiridihIndia

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