<abstract xmlns="http://www.w3.org/1999/xhtml">In the course of analysing sewage sludge biochar (BC) as a material containing phosphorus loads, we determined the following: effect of thermal conversion of three different sewage sludge biochars on the content and availability of P in biochars (BC-1, BC-2 BC-3), effect of their application on selected forms of P in soil and on the accumulation of this component in <italic>Poa pratensis</italic> L. biomass. Regardless of the type of BC, the contents of P-H2O and P-CaCl2 were lower than the contents determined in unconverted sewage sludge. A significant increase in the content of P-CaCl2 compared to the control was noted in the soil of treatments where 1 and 2 % additions of BC-2 and BC-3 were applied. Soil pH (<italic>r</italic> = 0.826; <italic>p</italic> ≤ 0.05) and the content of Ca-exchangeable (<italic>r</italic> = 0.712; <italic>p</italic> ≤ 0.05) had the strongest effect on the content of P-CaCl2 in soil; however, no significant relationship was found between the amount of P-introduced with BC, the contents of Al-ox., Fe-ox. and the content of P-CaCl2. Significant (<italic>p</italic> ≤ 0.05) increase in the phosphorus content in plant biomass was noted in all treatments compared to the control. Regardless of the type of biochar applied, the highest amount of P-uptake was determined in treatments where the greatest addition of BC (2 %) was introduced into the soil. A significant relationship between P-uptake and the amount of P-introduced with BC into the soil (<italic>r</italic> = 0.726; <italic>p</italic> ≤ 0.05) was demonstrated.</abstract>

In the course of analysing sewage sludge biochar (BC) as a material containing phosphorus loads, we determined the following: effect of thermal conversion of three different sewage sludge biochars on the content and availability of P in biochars (BC-1, BC-2 BC-3), effect of their application on selected forms of P in soil and on the accumulation of this component in Poa pratensis L. biomass. Regardless of the type of BC, the contents of P-H2O and P-CaCl2 were lower than the contents determined in unconverted sewage sludge. A significant increase in the content of P-CaCl2 compared to the control was noted in the soil of treatments where 1 and 2 % additions of BC-2 and BC-3 were applied. Soil pH (r = 0.826; p ≤ 0.05) and the content of Ca-exchangeable (r = 0.712; p ≤ 0.05) had the strongest effect on the content of P-CaCl2 in soil; however, no significant relationship was found between the amount of P-introduced with BC, the contents of Al-ox., Fe-ox. and the content of P-CaCl2. Significant (p ≤ 0.05) increase in the phosphorus content in plant biomass was noted in all treatments compared to the control. Regardless of the type of biochar applied, the highest amount of P-uptake was determined in treatments where the greatest addition of BC (2 %) was introduced into the soil. A significant relationship between P-uptake and the amount of P-introduced with BC into the soil (r = 0.726; p ≤ 0.05) was demonstrated.

Sewage Sludge Biochar Effects on Phosphorus Mobility in Soil and Accumulation in Plant

Department of Agricultural and Environmental Chemistry

Institute of Agricultural Engineering and Informatics

Department of Environmentalistics and Natural Resources

Faculty of Chemical and Process Engineering

Ecological Chemistry and Engineering S

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

In the course of analysing sewage sludge biochar (BC) as a material containing phosphorus loads, we determined the following: effect of thermal conversion of...

Sewage Sludge Biochar Effects on Phosphorus Mobility in Soil and Accumulation in Plant

Published Online: Jul 18, 2019

Page range: 367 - 381

DOI: https://doi.org/10.1515/eces-2019-0026

Keywords
plant, soil, phosphorus, sewage sludge biochar

© 2019 Krzysztof Gondek et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Sewage Sludge Biochar Effects on Phosphorus Mobility in Soil and Accumulation in Plant

Published Online: Jul 18, 2019

Page range: 367 - 381

DOI: https://doi.org/10.1515/eces-2019-0026

Keywordsplant, soil, phosphorus, sewage sludge biochar

© 2019 Krzysztof Gondek et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
plant, soil, phosphorus, sewage sludge biochar