The properties of biochars derived from different plant residue and different pyrolysis temperatures

Year 2019, , 319 - 322, 20.12.2019

Hamza Negiş , İlknur Gümüş , Cevdet Şeker

https://doi.org/10.29278/azd.539829

Cited By: 1

Abstract

By determining the
degraded and limiting properties of the soil, producing solutions for the
improvement of these properties will be able to provide sustainable and
efficient use of soil. Especially, low organic matter content of soils causes
many problems. Studies on increasing the organic matter content of soils by
using various plant residues and organic fertilizers constituted the subject of
many researches. However, in recent years, the use of biochar obtained by
pyrolysis of various plant materials at high temperatures has become popular.
With the use of biochar, both the characteristics of soil are improved, and
greenhouse effect is reduced. Furthermore, it provides the production of
various biofuels. The attributes of obtained biochar vary with pyrolysis
material and temperature. The aim of this study was to produce biochar by
pyrolyzing diverse plant residues in different temperature conditions and
determine some physical and chemical properties of the biochar. For
this purpose, sunflower stalk, sunflower head, corn stalk, corn cob and wheat
straw were converted to biochar’s at 300 °C, 400 °C, 500 °C, and 600 °C
temperatures. Biochar yield, surface area, C/N ratio, pH and electrical
conductivity (EC) values and water holding capacities of the experimental
samples were determined. In the light of results, the highest surface area was
found in sunflower stalk at 300 °C, while the lowest surface area was detected
as in wheat straw at 300 °C. The C/N ratios increased in all the samples except
corn stalk and corn cob.

Keywords

Biochar, plant residues, pyrolysis

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