• 3 minutes Nucelar Deal Is Dead? Iran Distances Itself Further From ND, Alarming Russia And France
  • 5 minutes Don Jr. Tweets name Ukraine Whistleblower, Eric Ciaramella. Worked for CIA during Obama Administration, Hold over to Trump National Security Counsel under Gen McCallister, more . . . .
  • 9 minutes Shale pioneer Chesepeak will file bankruptcy soon. FINALLY ! The consolidation begins
  • 12 minutes China's Blueprint For Global Power
  • 17 mins EU has already lost the Trump vs. EU Trade War
  • 2 hours Judge Orders Trump To Release Tax Returns
  • 4 hours Does .001 of Atmosphere Control Earth's Climate?!
  • 16 mins Err ... but Trump ...? #Eggbox
  • 3 hours China's Renewables Boom Hits the Wall
  • 3 hours Offshore SE Asia: Offshore OFS Could Get Major Boost in SE Asia
  • 1 hour The lies and follies of the "cry wolf" enviros: No more fire in the kitchen: Cities are banning natural gas in homes to save the planet
  • 3 hours Saudi Aramco IPO Will Not Save Kingdom
  • 5 hours Atty General Barr likely subpeona so called whistleblower and "leaker" Eric Ciaramella
  • 8 mins CHK Trading @ 90 Cents
  • 17 hours Iran Finds New Oil Field With Over 50 Billion Barrels: Rouhani
Alt Text

Is This The Best Value Energy Stock At The Moment?

Canadian solar, a promising energy…

Alt Text

A Bull’s Guide To Oil Markets

While bearish sentiment appears to…

Alt Text

The One Factor Driving Today’s Oil Markets

The trade war appears to…

EcoSeed

EcoSeed

Ecoseed’s mission is to provide global, complete, innovative, and up to date news, information, resources, and opportunities, catalyst to incorporate environmental awareness and responsibility into…

More Info

Premium Content

Oil and Gas Pipelines at Risk from Ethanol Bacteria

Researchers from the National Institute of Standards and Technology discovered that bacteria found in ethanol hasten the deterioration and cracking of pipeline steels.

Ethanol is a biofuel that is commonly used as a fuel additive because of its oxygen content and octane rating. Moreover, modified engines used ethanol solely as fuel.

Recently there have been proposals that existing gas pipelines and other infrastructure could be used to transport ethanol and increase its deployment. However, N.I.S.T. researchers exposed common pipeline steel to ethanol and found that ethanol and the bacteria found within can have a corrosive effect.

"Substantial increases in crack growth rates were caused by the microbes. These are important data for pipeline engineers who want to safely and reliably transport ethanol fuel in repurposed oil and gas pipelines," N.I.S.T. postdoctoral researcher Jeffrey Sowards said.

The corrosive bacterium, Acetobacter aceti, is known to occur in alcoholic environments – such as ethanol – and can convert that alcohol into acetic acid. It is used safely in the fermentation industry with no known adverse health effects to humans, animals or plants.

However, the researchers found that, when A. aceti feeds on ethanol the acid produced can boost fatigue crack growth rates in pipeline by at least 25 times the level occurring in air alone.

The team of researchers used a new biofuels test facility to assess fatigue-related cracks in two common pipeline steels dipped in ethanol mixtures, including a simulated fuel-grade ethanol and an ethanol-water solution with the bacteria.

Tow pipeline steels X52 and X70, which are alloys of different metals, were used in the experiment. The researchers found out that simulated fuel-grade ethanol significantly increased the crack growth under typical stress intensity levels on normal operating conditions. The cracking is related to corrosion.

The researchers caution that further study is needed to ensure that ethanol can be safely integrated into existing fuel transport infrastructure.

Tests were also conducted that suggest that a glutaralhyde, a biocide used in oil and gas operations, helped in controlling the growth of bacteria during passage of ethanol in the pipeline.

The findings of the study were presented at the Department of Defense Corrosion Conference 2011 happening this week.

By. K.D. Mariano

Source: EcoSeed




Download The Free Oilprice App Today

Back to homepage



Leave a comment

Leave a comment




Oilprice - The No. 1 Source for Oil & Energy News
Download on the App Store Get it on Google Play