Biochar-Ion Interactions: An Investigation of Biochar charge and its effect on ion retention

David Waters, Jason Condon, Lukas Van Zwieten, Juan Moroni

Research output: Book chapter/Published conference paperConference paper

Abstract

The method of measuring exchangeable cations as an approximation for cation exchange capacity was examined using a cow manure and green waste biochar. Both biochars were pre-treated by shaking with water over a range of times. Leachates were analysed, and the pre-treated biochars were then treated with two solutions (0.1M BaCl2 or 0.1M CsCl) to measure ion adsorption. Pre-treatment shaking had a significant effect on ion adsorption for both biochars. Ion adsorption for the green waste biochar was significantly increased with pre-treatment shaking, whereas it decreased for the cow manure biochar. Compulsive exchange of cations to determine the ability of a substrate to retain positively charged ions on its surface may not be an appropriate method for biochar.
Original languageEnglish
Title of host publication19th proceedings
Subtitle of host publicationSoil Solutions for a Changing World
EditorsRobert Gilkes
Place of PublicationCrawley
PublisherInternational Union of Soil Sciences
Pages20-23
Number of pages4
ISBN (Electronic)9780646537832
Publication statusPublished - 2010
EventWorld Congress of Soil Science - Brisbane, Australia, Australia
Duration: 01 Aug 201006 Aug 2010

Conference

ConferenceWorld Congress of Soil Science
CountryAustralia
Period01/08/1006/08/10

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Ions
Cations
Manures
Adsorption
biochar
Water
Substrates

Cite this

Waters, D., Condon, J., Van Zwieten, L., & Moroni, J. (2010). Biochar-Ion Interactions: An Investigation of Biochar charge and its effect on ion retention. In R. Gilkes (Ed.), 19th proceedings: Soil Solutions for a Changing World (pp. 20-23). Crawley: International Union of Soil Sciences.
Waters, David ; Condon, Jason ; Van Zwieten, Lukas ; Moroni, Juan. / Biochar-Ion Interactions : An Investigation of Biochar charge and its effect on ion retention. 19th proceedings: Soil Solutions for a Changing World. editor / Robert Gilkes. Crawley : International Union of Soil Sciences, 2010. pp. 20-23
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Waters, D, Condon, J, Van Zwieten, L & Moroni, J 2010, Biochar-Ion Interactions: An Investigation of Biochar charge and its effect on ion retention. in R Gilkes (ed.), 19th proceedings: Soil Solutions for a Changing World. International Union of Soil Sciences, Crawley, pp. 20-23, World Congress of Soil Science, Australia, 01/08/10.

Biochar-Ion Interactions : An Investigation of Biochar charge and its effect on ion retention. / Waters, David; Condon, Jason; Van Zwieten, Lukas; Moroni, Juan.

19th proceedings: Soil Solutions for a Changing World. ed. / Robert Gilkes. Crawley : International Union of Soil Sciences, 2010. p. 20-23.

Research output: Book chapter/Published conference paperConference paper

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AB - The method of measuring exchangeable cations as an approximation for cation exchange capacity was examined using a cow manure and green waste biochar. Both biochars were pre-treated by shaking with water over a range of times. Leachates were analysed, and the pre-treated biochars were then treated with two solutions (0.1M BaCl2 or 0.1M CsCl) to measure ion adsorption. Pre-treatment shaking had a significant effect on ion adsorption for both biochars. Ion adsorption for the green waste biochar was significantly increased with pre-treatment shaking, whereas it decreased for the cow manure biochar. Compulsive exchange of cations to determine the ability of a substrate to retain positively charged ions on its surface may not be an appropriate method for biochar.

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Waters D, Condon J, Van Zwieten L, Moroni J. Biochar-Ion Interactions: An Investigation of Biochar charge and its effect on ion retention. In Gilkes R, editor, 19th proceedings: Soil Solutions for a Changing World. Crawley: International Union of Soil Sciences. 2010. p. 20-23