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<p class=MsoNormal><span style='color:#1F497D'>G’day All,<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>We are considering a similar
project here, so far it appears doable!<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Happy digesting,<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>HOOROO<o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-size:10.5pt;font-family:Consolas;
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<p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:
"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'> digestion-bounces@lists.bioenergylists.org
[mailto:digestion-bounces@lists.bioenergylists.org] <b>On Behalf Of </b>Tom
Miles<br>
<b>Sent:</b> Monday, 14 February 2011 6:36 AM<br>
<b>To:</b> 'For Discussion of Anaerobic Digestion'<br>
<b>Subject:</b> [Digestion] Digestion of Grape Pomace and Winery Wastewater
Sludge<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span lang=EN-US>A winery produces grape pomace and sludge
from their wastewater treatment. They have been considering thermal conversion
but it seems to me that AD would be a better choice for recovering nutrients (N
P K S) that are otherwise problems in gasification or combustion.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Can grape pomace be digested or are there
components such as residual alcohol than interfere with digestion?<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>How much biogas can be produced from 1 ton
of grape pomace at 55% MC (or 0.45 dry tons)?<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>It seems to me that the capital cost will
be higher but the operating costs and life cycle costs and benefits (present
value of the costs an revenues) from pollution control, volume reduction,
nutrient recovery in liquid and solid digestate and energy recovery would be
higher with AD than with thermal conversion. Bad assumption or worth
investigating? Has anyone done this comparison?<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Thanks<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Tom Miles <o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
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