Talk:Clostridium acetobutylicum

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"Biobutanol"[edit]

I think the term "Bio" in front of butanol should be removed for many if not all cases as redudent and and confusing in some cases, for example: "Biobutanol has a higher octane fuel value than gasoline with increased low-end torque." is confusing as butanol no matter it source has these properties, it makes biobutanol seem like it physically different from normal n-butanol. I am going to make these corrections now.--BerserkerBen 22:34, 30 November 2005 (UTC)

Biodiesel does not require modifications to diesel engines, so I made the appropriate changes. DanD 05:50, 3 December 2005 (UTC)

Move butanol/biodiesel material to, well, Butanol and Biodiesel[edit]

Much of the last three paragraphs belongs in the articles on butanol and/or biodiesel....but not in the C. acetobutylicum entry. I suggest relocation - any comments? MarcoTolo 03:41, 23 February 2006 (UTC)

It's been a few weeks - if no one voices any objections in the next week I'll begin porting the above-mentioned sections to the appropriate articles (i.e. Biodiesel and Butanol). MarcoTolo 03:17, 9 April 2006 (UTC)

Cellulose Degradation?[edit]

Is there a reference for the claim that C. acetobutylicum can convert cellulose? All I find are some references to attempts to genetically modify this bacterium to process cellulose. --Benjamindees 23:31, 9 May 2006 (UTC)

http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=6786219&dopt=Abstract --BerserkerBen 04:47, 12 May 2006 (UTC)

I agree with you. From this article: http://www.pubmedcentral.nih.gov/picrender.fcgi?artid=99537&blobtype=pdf

"In work analyzing the cellulolytic activities of C. acetobutylicum strains, it was found that NRRL B 527 could hydrolyze Avicel and acid-swollen cellulose but C. acetobutylicum ATCC 824 could not (42)" Mrdarrett (talk) 22:29, 7 May 2009 (UTC)

butanol has a higher octane fuel value than gasoline with increased low-end torque.[edit]

butanol has a higher octane fuel value than gasoline with increased low-end torque. How can this be correct?

From butanol.com Higher energy content (110,000 Btu’s per gallon for butanol vs. 84,000 Btu per gallon for ethanol). Gasoline contains about 115,000 Btu’s per gallon.

Butanol is irrelevant here[edit]

Is this article about butanol or about the bacteria that helps to create butanol?
I suggest that the lengthy section relating to butanol be shortened or removed.
Tiny.ian 05:00, 9 November 2007 (UTC)

A.B.E process entry not about A.B.E.[edit]

The A.B.E. Process entry here does not provide details about the process, but is merely a repetition of BioButanol and Butanol information. I'd like to see the actual process. Bobkeyes (talk) 21:17, 16 December 2007 (UTC)

Cleanup needed[edit]

This Article is quite a mess, the Butanol section is way to long then what would be justified (just link to Butanol and Biobutanol and don't copy the contents?). Also I can't get whan these two statements mean:

Butanol can be produced for less than fossil-based vehicle fuels. Butanol reduces vehicular emissions.

Please clarify, I'm removing them for now. 143.50.183.196 (talk) 15:29, 17 December 2008 (UTC)

References needed/Factual Errors[edit]

Page states "Apart from the need for temperature control, the A.B.E. synthesis process is relatively simple. The products are formed in layers that are easy to separate." In fact, pH needs to be controlled during acetogenesis to prevent "acid crash." In addition, the product is an aqueous solution of n-butanol, ethanol and acetone. Since the products are so dilute in water and miscible, the separations required are anything but simple. And though butanol does partition from the water, the ethanol and acetone are pretty miscible. —Preceding unsigned comment added by 128.36.159.143 (talk) 23:21, 23 March 2009 (UTC)

[edit]

The above poster is absolutely correct. I have just designed an ABE plant as part of my senior design project at Mississippi State University and I can assure you the separations are not simple at all. The above poster is correct that the solvents are miscable in Water at those concentrations. In addition Ethanol and Water as well as Butanol and water both form an azeotrope, making separations even more difficult. —Preceding unsigned comment added by 130.18.83.222 (talk) 20:27, 21 July 2009 (UTC)

Tried some fixing up[edit]

Hi there. I took a stab at reorganizing the article to match some others I saw (for consistency, at least) and re-worded some sentences, added some useful (hopefully) links, and deleted the non-encyclopedic title in front of the introduction. I'm sure I butchered something or other in the process, so let me know about or fix-up anything you notice. The article is still relatively messy, particularly with respect to the references... no citations!!! It sounds like the person above me (who worked in an ABE plant) could do a good job fixing up the section on feasibility for butanol fuel, or at least trimming it down (I'm not knowledgeable enough to do this). That section is a little goofy as-is, since we've already got an article on butanol fuel. Jasper Cook (talk) 17:22, 10 July 2011 (UTC)

Incorrectly states that 2013 was the year alkane production was first noted in microbes[edit]

" In 2013, the first microbial production of short-chain alkanes was reported[3] - which is a considerable step toward the production of gasoline. One of the crucial enzymes - a fatty acyl-CoA reductase - came from Clostridium acetobutylicum."

Whereas Schirmer, A., Rude, M. A., Li, X., Popova,E. and del Cardayrem S. B. (2010) Microbial Biosynthesis of Alkanes. Science, 329:559-562 clearly demonstrates the microbial production of alkanes, which is certainly before 2013. As such I have made a change to the article.

--101.98.150.230 (talk) 14:34, 4 August 2014 (UTC)

Actually, just ignore me, it specifically mentions "short-chain" rather than "long-chain" which is what was noted by Schirmer et al. The production of gasoline requires the production of long-chain alkanes however as far as I know. I will leave it to others to make changes though if they see fit to do so.

--101.98.150.230 (talk) 14:38, 4 August 2014 (UTC)