#1 [url]

Jun 26 16 7:43 AM

US Grains council
Quote:
“Sulfur Concerns and Benefits in DDGS – When excess sulfur (greater than 0.40 percent
of diet dry matter) is present in ruminant diets neurological problems caused by
polioencephalomalacia can occur. Sulfur is reduced to hydrogen sulfide by rumen bacteria and
accumulates in the rumen causing toxicity. Some DDGS sources contain high concentrations of
sulfur, and if DDGS is fed at a high dietary inclusion rate, depending on the sulfur
concentrations in other dietary ingredients and water, polioencephalomalacia can occur.
Supplementation of ruminant diets with copper or thiamine may alleviate this problem if high
sulfur diets are fed. However, recent research conducted at the University of Minnesota has
shown that high sulfur content in DDGS fed to pigs protects against oxidized oil, found
occasionally in DDGS sources, by increasing sulfur-containing antioxidants in pigs. “

http://192.168.1.1:8181/http://www.grains.org/sites/default/files/ddgs-handbook/Complete%202012%20DDGS%20Handbook.pdf



Sulfur in distillers products has become a recent concern.


http://www.thecattlesite.com/articles/1530/sulfur-in-distillers-grains-for-dairy-cattle/


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Last Edited By: Sir Loin Jun 26 16 2:28 PM. Edited 1 time.

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#2 [url]

Oct 23 16 12:48 PM

By Susanne Retka Schill | July 15, 2016

The sulfate requirement to meet ASTM specifications has been around since the mid-2000s, and with producers occasionally running into issues meeting those specifications, U.S. Water has been working to reduce the use of sulfur compounds in the process, McCoy says. “Sulfuric acid is used for pH control.  There normally is some pH control to make the enzymes work well and to suppress bacterial growth.” The majority of sulfuric acid is used after fermentation. Controlling pH in the beer minimizes mineral deposits that drop out when the beer hits hot heat exchanger plates or in the beer column or in the evaporators. “Plants use sulfuric acid in that case to keep equipment operational by keeping those mineral deposits from forming.” U.S. Water introduced a unique technology several years ago to break up the anionic portion of the minerals before they form deposits, reducing sulfuric acid needs by 60 to 80 percent.

“The reason the chemistry is important is that sulfates, like those you get from sulfuric acid, are nonvolatile, so most of the sulfuric acid that gets used drops out in the coproduct,” McCoy says.



http://www.ethanolproducer.com/articles/13513/sulfur-compounded-in-ethanol-regulations

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#3 [url]

Dec 7 16 11:40 AM

*** by replacing sulfuric acid, ***

But applications for Lutropur MSA do not stop with production of fatty acid methyl esters. Fuel ethanol producers are finding the value of Lutropur MSA in a variety of uses. Lutropur MSA is a highly effective acid for CIP systems, and is improving plant economics by reducing cost and significantly increasing plant efficiency. In addition, *** by replacing sulfuric acid, *** Lutropur MSA can increase oil extraction, reduce fouling and improve DDGS color. These opportunities are contributing to greater plant performance and profitability.

http://161215-1-chemical-2-biofuel-industries-webinar.biodieselmagazine.com/ema/DisplayPage.aspx?pageId=Home

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