Structural and Functional Features of Chars From Different Biomasses as Potential Plant Amendments

Frontiers in Plant Science
Marta MarmiroliElena Maestri

Abstract

Biochars result from the pyrolysis of biomass waste of plant and animal origin. The interest in these materials stems from their potential for improving soil quality due to increased microporosity, carbon pool, water retention, and their active capacity for metal adsorption from soil and irrigation water. Applications in agriculture have been studied under different conditions, but the overall results are still unclear. Char structure, which varies widely according to the pyrolysis process and the nature of feedstock, is thought to be a major factor in the interaction of chars with soil and their metal ion adsorption/chelation properties. Furthermore, biochar nutrients and their elemental content can modify soil fertility. Therefore, the use of biochars in agricultural settings should be examined carefully by conducting experimental trials. Three key problems encountered in the use of biochar involve (i) optimizing pyrolysis for biomass conversion into energy and biochar, (ii) physicochemically characterizing biochar, and (iii) identifying the best possible conditions for biochar use in soil improvement. To investigate these issues, two types of wood pellets, plus digestate and poultry litter, were separately converted into bio...Continue Reading

References

Nov 24, 2007·Science·David R Dodds, Richard A Gross
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Nov 27, 2010·Environmental Pollution·Luke Beesley, Marta Marmiroli
Dec 23, 2011·Water Research·Huanliang LuRongliang Qiu
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Oct 3, 2017·Frontiers in Plant Science·Giuliano BonanomiFelice Scala
Nov 19, 2017·Environmental Toxicology and Chemistry·Monika Mierzwa-HersztekTomasz Bajda
Jul 13, 2018·The Science of the Total Environment·Naba Raj PanditGerard Cornelissen

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