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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Tim,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Feel free to contact me directly. I am literally doing this informational work right now, for a production line.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Jeff</span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal" style="line-height:105%"><a href="http://www.pcb.com/"><span style="font-size:11.0pt;line-height:105%;font-family:"Calibri",sans-serif;color:#222A35;text-decoration:none"><img border="0" width="128" height="74" style="width:1.3333in;height:.7708in" id="Picture_x0020_1" src="cid:image001.png@01D6FAD2.1AB39060"></span></a><span style="font-size:11.0pt;line-height:105%;font-family:"Calibri",sans-serif;color:#222A35"><o:p></o:p></span></p>
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<p class="MsoNormal" style="line-height:105%"><b><span style="font-family:"Calibri",sans-serif;color:#19325D">Jeff Salzmann</span></b><b><span style="font-family:"Calibri",sans-serif;color:#19325D"><o:p></o:p></span></b></p>
<p class="MsoNormal" style="line-height:105%"><span style="font-size:10.0pt;line-height:105%;font-family:"Calibri",sans-serif;color:black;border:none windowtext 1.0pt;padding:0in">Research and Development Engineering</span><span style="font-size:10.0pt;line-height:105%;font-family:"Calibri",sans-serif;color:#1F4E79"><o:p></o:p></span></p>
<p class="MsoNormal" style="line-height:105%"><span style="font-size:11.0pt;line-height:105%;font-family:"Calibri",sans-serif"><a href="http://www.pcb.com/"><span style="font-size:10.0pt;line-height:105%;color:#19325D;border:none windowtext 1.0pt;padding:0in">PCB
Piezotronics</span></a></span><b><span style="font-size:10.0pt;line-height:105%;font-family:"Calibri",sans-serif;color:#002E5F;border:none windowtext 1.0pt;padding:0in"> |
</span></b><b><span style="font-size:10.0pt;line-height:105%;font-family:"Calibri",sans-serif;color:black;border:none windowtext 1.0pt;padding:0in">716 684 0002 ext 2907</span></b><span style="font-size:10.0pt;line-height:105%;font-family:"Arial",sans-serif;color:#222A35"><o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> labnetwork-bounces@mtl.mit.edu <labnetwork-bounces@mtl.mit.edu>
<b>On Behalf Of </b>Tim Gilheart<br>
<b>Sent:</b> Wednesday, February 3, 2021 16:17<br>
<b>To:</b> labnetwork@mtl.mit.edu<br>
<b>Subject:</b> [labnetwork] Electroless Ni waste management?<o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><strong><span style="font-size:10.0pt;font-family:"Calibri",sans-serif;color:yellow">External Email Notice: This email originated from outside the MTS / PCB organization.</span></strong><o:p></o:p></p>
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Greetings all,<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">The Rice cleanroom team is working with our counterparts in Environmental Health & Safety to identify best practices for managing the waste generated by the electroless nickel plating process our users now need us to support.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">This process is based on Transene’s Nickelex product (<a href="https://transene.com/ni/">https://transene.com/ni/</a>), and we do not have a dedicated plating bench. Our users anticipate working with beaker-scale quantities, which our staff
team believes we can properly support at our acid bench.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Our EHS colleague is concerned about the amount of Ni in solution the leftover plating bath will generate, and is uncertain if our waste treatment system will be sufficient. Our treatment system treats all our waste water with sodium bicarbonate
and treats with NaOH/H2SO4 as needed to meet the pH specs we’ve set. <o:p></o:p></p>
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<p class="MsoNormal">We’re expecting plating waste to be 1-L per day or less on average, and our wastewater outflow exceeds a thousand gallons per day. We may be close to acceptable Ni levels in the waste stream (2.0 ppm locally) already, just by volume alone,
but this is probably not ideal.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I’m sure managing electroless nickel waste is routine for a good number of you on the list, so we’d appreciate any insights you can share.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Thanks in advance!<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="color:black">-- <br>
Tim Gilheart, Ph.D.<br>
Research Scientist - Nanofabrication Cleanroom Manager,<br>
Shared Equipment Authority (SEA), Rice University<br>
Cell: 832-341-5488 | Office: 713-348-3159 | <a href="mailto:gilheart@rice.edu">gilheart@rice.edu</a><o:p></o:p></span></p>
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