<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "> Paul,<div>Good insights which far more and far better educated and more focused on the subject need to know about. Might I suggest you contact wikipedia and submit that correction directly.<div>Thanks,</div><div> Richard </div><div><br></div><div><br><div><div>On Jun 13, 2013, at 9:41 PM, Paul Olivier wrote:</div><br class="Apple-interchange-newline"><div dir="ltr"><div><div>Richard,<br><br></div>I would question the statement that RHA contains about 85 to 90% amorphous silica.<br></div><div>A significant proportion of it should be in crystalline form.<br><br></div>Paul<br>
<div><div class="gmail_extra"><br><br><div class="gmail_quote">On Fri, Jun 14, 2013 at 11:05 AM, Richard Stanley <span dir="ltr"><<a href="mailto:rstanley@legacyfound.org" target="_blank">rstanley@legacyfound.org</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word">Paul. <div><br></div><div>Answer is that I don't know, to all of your questions Paul: It was not our focus at the time. The rice hulls that were being anerobically decomposed were an eyesore and a real danger to the kids in the area who would play on them, sometimes falling into deep caverns created by the collapse of the structure on decomposition often with tragic results. As a result the use of that resource became somewhat taboo for the briquette maker The silica content in the ash of combusted rice husks is however relatively well known published figure. Here is this citation from wikipedia..<div>
<img height="42" width="640" id="37b91ef6-8e1e-458d-8f03-c04684f2b313" apple-width="yes" apple-height="yes" src="cid:AA85C750-493F-407F-AF2B-8560366D0384"></div><div><br></div><div>The densification of rice hulls for the low pressure wet process we follow, making effective briquettes out of such requires that it is either made soft and "mashy" or so fine as to serve as an infilling for a fibrous lattice work. </div>
<div> </div><div>Richard</div><div><br><div><div class="im"><div>On Jun 13, 2013, at 6:57 PM, Paul Olivier wrote:</div><br><div dir="ltr">Richard,<br><br>I assume that we are still taking about rice hulls. I supposed that this pile of rice hulls is being decomposed anaerobically. If this is the case, do you know how much methane is being released? You talk about a high silica content ending up in the ash. Have you checked the composition of this ash?<br>
</div></div><div class="gmail_extra"><br><br><div class="gmail_quote"><div class="im">On Fri, Jun 14, 2013 at 8:47 AM, Legacy Mail <span dir="ltr"><<a href="mailto:rstanley@legacyfound.org" target="_blank">rstanley@legacyfound.org</a>></span> wrote:<br>
</div><blockquote class="gmail_quote" style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div dir="auto">
<div>hi Trevor &Frank,</div><div>I am no expert on the stuff as it seems to vary considerably from what we have seen in practice. Where it is left to decompose in huge multi acre 50 ft tall mounds, (eg Mbale Uganda), you observe a glutenous mass which can work very well even with other granular solids (sawdust, charcoal fines) right off the mound. Take it off the fields dry (in such as Bamaco Mali ) and it has to indeed be blended with softened fibrous material. In either condition (whether gluten or fiber bound) the high silica generates lots of ash. </div>
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<div>Richard</div><div><br></div><div><br>Sent from my iPhone</div><div><div><div><br>On Jun 12, 2013, at 22:11, <a href="mailto:mtrevor@ntamar.net" target="_blank">mtrevor@ntamar.net</a> wrote:<br><br></div><blockquote type="cite">
<div><p>I suspect the high silicacontnt and loose nature will not compact well. However if macerated and retted, then mixed with other stuff--- then maybe. I suspect Richard Stanley could provide more info </p><p>Michael N Trevor</p><p>Marshall Islands<br></p><br>
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<div><p class="MsoNormal"> <u></u><u></u></p>
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