Related Experiment Video
Updated: Nov 3, 2025
09:39
Physical, Chemical and Biological Characterization of Six Biochars Produced for the Remediation of Contaminated Sites
Published on: November 28, 2014
35.4K
Cavitated Charcoal-An Innovative Method for Affecting the Biochemical Properties of Soil
Krzysztof Gondek1, Monika Mierzwa-Hersztek1,2, Wojciech Grzymała3
1Department of Agricultural and Environmental Chemistry, Faculty of Agriculture and Economics, University of Agriculture in Krakow, Al. Mickiewicza 21, 31-120 Krakow, Poland.
Materials (Basel, Switzerland)
|June 2, 2021
Summary
Cavitated charcoal improves soil properties by reducing acidification and increasing carbon content. It also decreases heavy metal mobility in soil and plant biomass, benefiting crops like Sorghum saccharatum.
Area of Science:
- Soil Science
- Environmental Chemistry
- Biogeochemistry
Background:
- Thermal biomass transformation products, like charcoal, are recognized for their soil-enhancing capabilities.
- Cavitation processing offers a novel method for preparing charcoal for soil amendment.
Purpose of the Study:
- To evaluate the impact of cavitated charcoal on the chemical and biochemical characteristics of loamy sand and clay soils.
- To assess the effects on soil properties and Sorghum saccharatum (L.) growth and heavy metal uptake.
Main Methods:
- Application of a 10% aqueous cavitated charcoal mixture at varying rates (1.76% to 14.0%) to loamy sand and clay soils.
- Analysis of soil chemical properties (pH, total carbon, heavy metals) and biochemical activities (dehydrogenase, urease).
- Measurement of Sorghum saccharatum (L.) biomass and heavy metal accumulation.
Main Results:
- Cavitated charcoal application reduced soil acidification and significantly increased total soil carbon, especially in loamy sand.
- Heavy metal content in CaCl2-extracted forms and mobile fractions decreased with increasing cavitated charcoal rates.
- While microbial activity (dehydrogenase, urease) was reduced at high rates, cavitated charcoal enhanced Sorghum saccharatum biomass and reduced heavy metal uptake.
Conclusions:
- Cavitated charcoal is an effective soil amendment for improving soil chemistry and reducing heavy metal bioavailability.
- It positively influences crop yield and reduces heavy metal accumulation in plant tissues, despite potential impacts on soil microbial activity at high concentrations.
