Comments on: Microalgal Oil Extraction and in-Situ Transesterification http://www.oilgae.com/blog/2007/02/microalgal-oil-extraction-and-in-situ.html Blog for discussing oil, biodiesel & fuel production from algae. Fri, 03 Feb 2012 17:48:00 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: hms http://www.oilgae.com/blog/2007/02/microalgal-oil-extraction-and-in-situ.html/comment-page-1#comment-463 hms Sat, 21 Feb 2009 12:21:00 +0000 http://oilgae.com/blog/?p=361#comment-463 Maybe this is a very unbright idea but how about just heating the "alggae soup" and wait for the oil to float to the top? Maybe this is a very unbright idea but how about just heating the "alggae soup" and wait for the oil to float to the top?

]]> By: Anonymous http://www.oilgae.com/blog/2007/02/microalgal-oil-extraction-and-in-situ.html/comment-page-1#comment-429 Anonymous Thu, 25 Sep 2008 21:04:00 +0000 http://oilgae.com/blog/?p=361#comment-429 fermentation is for processing sugars and starches,into ethanol..not algae oil,what this paper is about...transesterification is for processing biodiesel from the algae oil.which requires methanol. fermentation is for processing sugars and starches,into ethanol..not algae oil,what this paper is about…transesterification is for processing biodiesel from the algae oil.which requires methanol.

]]> By: Jerry Brule http://www.oilgae.com/blog/2007/02/microalgal-oil-extraction-and-in-situ.html/comment-page-1#comment-408 Jerry Brule Tue, 10 Jun 2008 05:26:00 +0000 http://oilgae.com/blog/?p=361#comment-408 I think the fermentation idea is a good one because it seems that we should try to find the simplest and most cost effective methods, and also try to keep away from the solvent methods which rely on toxic chemicals. <br />Fermentation before oil extraction would be simple and would not require the energy intensive drying process. I like the idea of using a multi step process that would extract ethanol, then oil, then would retain the rest as a high protein supplement or feed. Keep the hexane out of the process so we have fewer toxic chemicals involved.<br />Unfortunately I am not one of those brighter minds that you seek that could actually prove this hypothesis. <br />If anyone knows one of these brighter mind folk, ask them if anyone has thought about using microwaves to break down the cellular walls to extract the oil. <br />I read about some guy that is extracting oil from all kinds of trash. Each different type of trash takes a different frequency of microwave to break it down. I wonder if you can find the correct microwave frequency if part of the process would be cheaper or cost effective? I think the fermentation idea is a good one because it seems that we should try to find the simplest and most cost effective methods, and also try to keep away from the solvent methods which rely on toxic chemicals.
Fermentation before oil extraction would be simple and would not require the energy intensive drying process. I like the idea of using a multi step process that would extract ethanol, then oil, then would retain the rest as a high protein supplement or feed. Keep the hexane out of the process so we have fewer toxic chemicals involved.
Unfortunately I am not one of those brighter minds that you seek that could actually prove this hypothesis.
If anyone knows one of these brighter mind folk, ask them if anyone has thought about using microwaves to break down the cellular walls to extract the oil.
I read about some guy that is extracting oil from all kinds of trash. Each different type of trash takes a different frequency of microwave to break it down. I wonder if you can find the correct microwave frequency if part of the process would be cheaper or cost effective?

]]> By: Anonymous http://www.oilgae.com/blog/2007/02/microalgal-oil-extraction-and-in-situ.html/comment-page-1#comment-391 Anonymous Sat, 26 Jan 2008 07:46:00 +0000 http://oilgae.com/blog/?p=361#comment-391 I had a thought that maybe brighter minds than mine could consider (or already have.) Instead of fermenting for ethanol after the oil extraction consider fermentation before oil extraction. It would seem that the process of fermenting the microalgae before the extraction of the oil may break down the cell walls which would free the oil. The stock and water could then be removed through filtering, settling, centrifuge, or something. The ethanol could be distilled out leaving the oil ready for biodiesel conversion. I read somewhere that ethanol could be used in place of methanol and this process would/could provide the source of the ethanol. <br /><br />fcvan I had a thought that maybe brighter minds than mine could consider (or already have.) Instead of fermenting for ethanol after the oil extraction consider fermentation before oil extraction. It would seem that the process of fermenting the microalgae before the extraction of the oil may break down the cell walls which would free the oil. The stock and water could then be removed through filtering, settling, centrifuge, or something. The ethanol could be distilled out leaving the oil ready for biodiesel conversion. I read somewhere that ethanol could be used in place of methanol and this process would/could provide the source of the ethanol.

fcvan

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