Biochar Carbon Sequestration Potential Challenged

[Steve Rogers]

I would welcome some feedback on the proposed sequestration numbers cited here by Dr Schlesinger.

http://themillbrookindependent.com/content/biochar-revisited

Best

Steve

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Stephan Rogers

CEO

NextChar LLC

99 Pulpit Hill Rd

Amherst Mass 01002

413.531.6884

[Erich Knight]

This "Revisiting" only accounts for Ag waste feedstocks, and doesn't account for dedicated biomass crops which in the US are projected to be 1.6 Giga tons by 2030

Cheers,

Erich

Erich J. Knight
Shenandoah Gardens
1047 Dave Berry Rd. McGaheysville, VA. 22840
  540-289-9750   

Policy & Community Chairman
2013 North American Biochar Symposium
Harvesting Hope: The Science & Synergies of Biochar
October 13-16, 2013 at UMASS Amherst
http://pvbiochar.org/2013-symposium/

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[Richin52]

Guy Lomax stated "I’ve not discounted the results by any carbon dioxide released during field operations to gather the residue, transport it to the pyrolysis facility, and return the char to the field." 

 I would be interested to know what figures he used for transport of the residue and bio char.  Locally produced bio char would use much less carbon dioxide than long distance operations.

Humas that would be held by the bio char for much longer periods would also hold a significant amount of carbon.  Was this taken into account?