Hello Igor.<div>Thanks for your answer and sorry for the late reply.</div><div>What does it means that "the biogas plant works normally"? I mean, does exist a paramater , besides the H2S contect, to check if the plant is running correctly? Or what we have to do to assure that we won´t have the problem?</div>
<div>Thanks for your help.</div><div>Regards,<br><br><div class="gmail_quote">2010/10/5 Igor Škrjanec <span dir="ltr"><<a href="mailto:igor.skrjanec@gmail.com">igor.skrjanec@gmail.com</a>></span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
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Na 4.10.2010 20:15, Arturo Ávalos je pisal:
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<p class="MsoNormal"><span style="font-size:10pt;color:black" lang="EN-US">Hello all</span><span style="font-size:10pt;color:black" lang="EN-US"></span></p>
<p class="MsoNormal"><span style="font-size:12pt;font-family:"Times New Roman","serif"" lang="EN-US"> </span></p>
<p class="MsoNormal"><span style="font-size:10pt;color:black" lang="EN-US">Does someone know something about use ferric
chloride to reduce
the sulfur content in the biogas?</span></p>
<p class="MsoNormal"><span style="font-size:10pt;color:black">Thanks
for the information<br clear="all">
</span></p>
<p class="MsoNormal"><span><span style="font-size:10pt;color:black"> </span></span></p>
<p class="MsoNormal"><i> </i></p>
<p class="MsoNormal">Arturo</p>
</div>
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</pre>
</blockquote>
<br>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal">
</p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US">Hallo
Arturo</span></p>
<br>
<p class="MsoNormal" style="text-align:left;line-height:normal" align="left"><span style="font-family:"Times New Roman","serif"" lang="EN-US">Ferric chloride is
normally
use for a neutralizations of H<sub>2</sub>S. Hydrogen sulfide is
slightly
soluble in water and acts as a <a href="http://en.wikipedia.org/wiki/Weak_acid" title="Weak
acid" target="_blank"><span style="color:windowtext;text-decoration:none">weak
acid</span></a>, because of this is harmful for a CHP
unit.</span><span style="font-family:"Times New Roman","serif""></span></p>
<p class="MsoNormal" style="text-align:left;line-height:normal" align="left"><span style="font-family:"Times New Roman","serif"" lang="EN-US">H<sub>2</sub>S is a
product
of <a href="http://en.wikipedia.org/wiki/Sulfate-reducing_bacteria" title="Sulfate-reducing bacteria" target="_blank"><span style="color:windowtext;text-decoration:none">sulfate-reducing
bacteria</span></a> which are also
present in biogas reactor. <a href="http://en.wikipedia.org/wiki/Sulfate-reducing_bacteria" title="Sulfate-reducing bacteria" target="_blank"><span style="color:windowtext;text-decoration:none">Sulfate-reducing
bacteria</span></a> use present
sulfats from substrates to oxidize the organic matter.</span><span style="font-family:"Times New Roman","serif""></span></p>
<p class="MsoNormal" style="text-align:left;line-height:normal" align="left"><span style="font-family:"Times New Roman","serif"" lang="EN-US">Hydrogen sulfide
reacts with
metal ions to form metal <a href="http://en.wikipedia.org/wiki/Sulfide" title="Sulfide" target="_blank"><span style="color:windowtext;text-decoration:none">sulfides</span></a>
(H<sub>2</sub>S + FeCl<sub>2 </sub>→ FeS + 2 HCl).
Iron sulfide is not soluble and it is not problematic for a
biogas process and
CHP unit.</span><span style="font-family:"Times New Roman","serif""></span></p>
<p class="MsoNormal" style="text-align:left;line-height:normal" align="left"><span style="font-family:"Times New Roman","serif"" lang="EN-US">When biogas plant
works
normally hydrogen sulfide is not problematic, because of its
oxidation with
aerobic bacteria to elementary sulphur.<br>
</span></p>
<p class="MsoNormal" style="text-align:left;line-height:normal" align="left"><span style="font-family:"Times New Roman","serif"" lang="EN-US"><br>
</span></p>
<p class="MsoNormal" style="text-align:left;line-height:normal" align="left">Bye<br>
</p>
<p class="MsoNormal" style="text-align:left;line-height:normal" align="left">Igor<br>
<span style="font-family:"Times New Roman","serif"" lang="EN-US"></span><span style="font-family:"Times New Roman","serif""></span></p>
</div>
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<br></blockquote></div><br><br clear="all"><br>-- <br>Arturo<br>
</div>