Pyrolysis produces two main types of carbon residue: char and biochar.
2 Key Types of Carbon Residue Produced by Pyrolysis
1. Char
Char is the primary solid product of pyrolysis.
It consists of organic matter with a high carbon content and some ash.
Char is formed through the thermal decomposition of biomass at high temperatures in the absence of oxygen.
During pyrolysis, biomass undergoes chemical and physical changes, breaking down into various components including char.
This process involves the breaking of bonds within the biomass, leading to the formation of a carbon-rich solid residue.
Char is typically characterized by its porous structure and high carbon content.
It is useful for various applications such as fuel or as a precursor for activated carbon.
2. Biochar
Biochar is a specific type of char produced with the intention of using it as a soil amendment.
It is created through the pyrolysis of biomass under controlled conditions, often at lower temperatures and longer residence times compared to the production of char.
The primary goal of biochar production is to enhance soil fertility, improve water retention, and increase carbon sequestration.
Biochar is rich in carbon and can remain stable in the soil for hundreds to thousands of years.
It is an effective tool for carbon sequestration.
Biochar also improves soil structure and can provide a range of benefits for agricultural or forestry activities.
Both char and biochar are derived from the same fundamental process of pyrolysis.
They are differentiated by their intended applications and the specific conditions under which they are produced.
Char is more general and can be used for energy production or other industrial processes.
Biochar is specifically tailored for environmental benefits in soil management.
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