Publication detail

Production and analysis of crude biochar produced from wheat bran

POŘÍZKA, J. ŠVEC, J. DIVIŠ, P. ZOUHAROVÁ, K. SEDLÁČEK, P. ENEV, V. HAJZLER, J. MRAVCOVÁ, L.

Original Title

Production and analysis of crude biochar produced from wheat bran

Type

abstract

Language

English

Original Abstract

Biochar is solid material mainly produced by the pyrolysis of biomass. It is generally a carbonated material with high porosity and a high level of aromatization. Thanks to its properties, biochar is used in various industries, such as power production, agriculture, wastewater treatment, construction, pharmacy and many others. A significant advantage of biochar production is that it is often produced from agricultural and food waste, which corresponds to circular economics's philosophy. The physicochemical properties of biochar strongly depend on the feedstock type. An interesting raw material with potential for the production of biochar is wheat bran, a by-product of milling, which falls into lignocellulosic biomass. The main aspect of this work was developing a pyrolysis procedure and determining the products' physicochemical properties. The pyrolysis was performed in a furnace under an anaerobic nitrogen environment. Three pyrolysis temperatures were tested – 300, 400 and 500°C. Characterization of biochar was proceeded according to the European biochar certificate, which included size distribution analysis, SEM, BET surface area analysis, thermogravimetry (TGA), elemental analysis, FTIR spectral analysis and analysis of PAHs. FTIR, elemental analysis and SEM proved that 500 °C pyrolysis for 3 hours was optimal to produce well-carbonized biochar with the optimal structure. Yield of the process was 290,2 g of biochar from 1 kg of bran. Biochar contained a significant amount of K (45.7 ± 0.7 μg/g), and P (4.,8 ± 0.6 μg/g) and did not exceed the allowed limit of total PAHs (2.28 μg/g) set by European biochar certificate. The surface of the biochar significantly raised with the pyrolysis temperature with 3.4 m2/g for 500°C. This parameter can be substantially improved by subsequent chemical or physical activation. Wheat bran proved to be a material suitable as a feedstock for production of biochar with the potential for agricultural use.

Keywords

biochar, wheat bran

Authors

POŘÍZKA, J.; ŠVEC, J.; DIVIŠ, P.; ZOUHAROVÁ, K.; SEDLÁČEK, P.; ENEV, V.; HAJZLER, J.; MRAVCOVÁ, L.

Released

3. 5. 2021

ISBN

ISBN 978-80-88214-24

Book

Book of abstracts of the 8th International Conference on Chemical Technology

Pages from

106

Pages to

106

Pages count

1

URL

https://www.icct.cz/Amca-ICCT/media/content/2021/ICCT2021-Book_of_abstracts.pdf

BibTex

@misc{BUT171413,
  author="Jaromír {Pořízka} and Jiří {Švec} and Pavel {Diviš} and Kamila {Zouharová} and Petr {Sedláček} and Vojtěch {Enev} and Jan {Hajzler} and Ludmila {Mravcová}",
  title="Production and analysis of crude biochar produced from wheat bran",
  booktitle="Book of abstracts of the 8th International Conference on Chemical Technology",
  year="2021",
  pages="106--106",
  isbn="ISBN 978-80-88214-24",
  url="https://www.icct.cz/Amca-ICCT/media/content/2021/ICCT2021-Book_of_abstracts.pdf",
  note="abstract"
}