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Pyrolysis temperature had effects on the physicochemical properties of biochar

Author

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  • Xue Li

    (Monitoring and Experimental Station of Corn Nutrition and Fertilization in Northeast Region, Ministry of Agriculture, College of Land and Environment, Shenyang Agricultural University, Shenyang, P.R. China
    INSA-UB, Nutrition and Food Safety Research Institute, University of Barcelona, Barcelona, Catalonia, Spain)

  • Hang Liu

    (Monitoring and Experimental Station of Corn Nutrition and Fertilization in Northeast Region, Ministry of Agriculture, College of Land and Environment, Shenyang Agricultural University, Shenyang, P.R. China)

  • Ning Liu

    (Monitoring and Experimental Station of Corn Nutrition and Fertilization in Northeast Region, Ministry of Agriculture, College of Land and Environment, Shenyang Agricultural University, Shenyang, P.R. China)

  • Zhentao Sun

    (Monitoring and Experimental Station of Corn Nutrition and Fertilization in Northeast Region, Ministry of Agriculture, College of Land and Environment, Shenyang Agricultural University, Shenyang, P.R. China)

  • Shifeng Fu

    (Agronomy College, Shenyang Agricultural University, Shenyang, P.R. China)

  • Xiumei Zhan

    (Monitoring and Experimental Station of Corn Nutrition and Fertilization in Northeast Region, Ministry of Agriculture, College of Land and Environment, Shenyang Agricultural University, Shenyang, P.R. China)

  • Jinfeng Yang

    (Monitoring and Experimental Station of Corn Nutrition and Fertilization in Northeast Region, Ministry of Agriculture, College of Land and Environment, Shenyang Agricultural University, Shenyang, P.R. China)

  • Rongxin Zhou

    (Monitoring and Experimental Station of Corn Nutrition and Fertilization in Northeast Region, Ministry of Agriculture, College of Land and Environment, Shenyang Agricultural University, Shenyang, P.R. China)

  • Hongda Zhang

    (Monitoring and Experimental Station of Corn Nutrition and Fertilization in Northeast Region, Ministry of Agriculture, College of Land and Environment, Shenyang Agricultural University, Shenyang, P.R. China)

  • Jiming Zhang

    (Monitoring and Experimental Station of Corn Nutrition and Fertilization in Northeast Region, Ministry of Agriculture, College of Land and Environment, Shenyang Agricultural University, Shenyang, P.R. China)

  • Xiaori Han

    (Monitoring and Experimental Station of Corn Nutrition and Fertilization in Northeast Region, Ministry of Agriculture, College of Land and Environment, Shenyang Agricultural University, Shenyang, P.R. China)

Abstract

Biochar is the carbon-rich product obtained when biomass is anaerobically heated. In this study, different materials (corn straw and peanut shell) and pyrolysis temperatures (350, 450 and 550 °C) affect the elemental composition, surface structure, and biochar properties. The results showed that the carbon (C) content in biochar increased as the temperature increased, but hydrogen (H) and nitrogen (N) did not change. The alkane overpressure of corn straw and peanut shell increased first and then decreased with the increased temperature; the fatty alkyl chain disappeared, but the ash content increased at 550 °C. At high temperatures, the aromaticity (H/C ratio) and hydrophobicity (O/C ratio) of biochar become "carbon-rich particles", while the polarity (O + N)/C decreases significantly. The pore wall of biochar became thinner with the increase in pyrolysis temperature, the internal pore structure became larger, and a large number of micropores appeared in biochar. Biochar pyrolysed at 550 °C has much higher C, ash content, pore, and stronger buffering capacity, and thus is more promising to improve soil health.

Suggested Citation

  • Xue Li & Hang Liu & Ning Liu & Zhentao Sun & Shifeng Fu & Xiumei Zhan & Jinfeng Yang & Rongxin Zhou & Hongda Zhang & Jiming Zhang & Xiaori Han, 2023. "Pyrolysis temperature had effects on the physicochemical properties of biochar," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 69(8), pages 363-373.
    • Handle: RePEc:caa:jnlpse:v:69:y:2023:i:8:id:444-2022-pse
    DOI: 10.17221/444/2022-PSE
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    References listed on IDEAS

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    1. Sumathi Sethupathi & Ming Zhang & Anushka Upamali Rajapaksha & Sang Ryong Lee & Norhusna Mohamad Nor & Abdul Rahman Mohamed & Mohammad Al-Wabel & Sang Soo Lee & Yong Sik Ok, 2017. "Biochars as Potential Adsorbers of CH 4 , CO 2 and H 2 S," Sustainability, MDPI, vol. 9(1), pages 1-10, January.
    2. Anita Maienza & Lorenzo Genesio & Marco Acciai & Franco Miglietta & Emanuela Pusceddu & Francesco Primo Vaccari, 2017. "Impact of Biochar Formulation on the Release of Particulate Matter and on Short-Term Agronomic Performance," Sustainability, MDPI, vol. 9(7), pages 1-10, June.
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