Immagine
 Trilingual World Observatory: italiano, english, română. GLOBAL NEWS & more... di Redazione
   
 
\\ Home Page : Articolo
Bugs Might Convert Biodiesel Waste Into New Fuel.
By Admin (from 20/03/2011 @ 11:00:32, in en - Global Observatory, read 2116 times)

A strain of bacteria found in soil is being studied for its ability to convert waste from a promising alternative fuel into several useful materials, including another alternative fuel.

A graduate student at The University of Alabama in Huntsville is developing biological tools to make products from crude glycerol -- a waste material from the production of biodiesel. The research is being funded by the National Science Foundation.

Disposing of glycerol has been a problem for the biodiesel industry, according to Keerthi Venkataramanan, a student in UAHuntsville's biotechnology Ph.D. program. "Many companies have had problems disposing of it. The glycerol you get as a byproduct isn't pure, so it can't be used in cosmetics or animal feeds. And purifying it costs three times as much as the glycerol is worth."

The volume of glycerol produced is also daunting: About 100,000 gallons of glycerol is produced with every million gallons of biodiesel manufactured from animal fats or vegetable oils. (In 2009 more than 500 million gallons of biodiesel were produced in the U.S. while more than 2.75 billion gallons were produced in Europe.)

Two major American companies "were made to close biodiesel plants in Europe because they couldn't dispose of their crude glycerol," Venkataramanan said. He is working with the Clostidium pasteurianum bacteria, which "eats" glycerol and produces several potentially useful byproducts.

"This strain is found deep in the soil," he said. "It was originally studied for its ability to 'fix' nitrogen from the air."

The bacteria uses glycerol as a carbohydrate source. From that they produce three alcohol byproducts -- butanol, propanediol and ethanol -- plus acetic acid and butyric acid. Butanol is a particularly interesting byproduct.

"Butanol is a big alcohol molecule, twice as big as ethanol," Venkataramanan said. "You can use it as an industrial solvent and it can be used in cars, replacing gasoline with no modifications. It doesn't have some of the problems you have with ethanol, such as rapid evaporation. And ethanol is a two-carbon molecule, but butanol is a four-carbon molecule so its energy value is much higher. In fact, there are plans to use it for jet fuel.

"You can also get butanol from crude oil, but this biological process is less polluting."

In their present form, the bacteria convert about 30 to 35 percent of their gylcerol meals into butanol and another 25 to 30 percent into a chemical used to make plastics.

Venkataramanan is looking at different strategies to improve that yield. He is also studying the bacteria's genes to see if a more productive strain can be bioengineered.

Other groups in the U.S. and abroad are studying a variety of fungi, bacteria and algae for glycerol conversion, but Venkataramanan says his strain has several advantages. Some of the bacteria being studied are dangerous pathogens, while Clostidium pasteurianum "is a completely non-pathogenic strain," he said. "An accidental release is not a big deal. You get it from the soil, so if you spill any you're putting it back in the soil."

Source: ScienceDaily

Articolo Articolo  Storico Storico Stampa Stampa  Share
Cannabis seeds, Autoflowering seeds, Greenhouse, Sweet Seeds, Dutch Passion
comments powered by Disqus
 
Nessun commento trovato. No comments found. Nici un comentariu găsit.

Anti-Spam: dial the numbers CAPTCHA
Text (max 5000 characters)
Nome - Name - Nume
Link ( OPTIONAL - visible on the site - NOT a must )


Disclaimer
Tuo commento sarŕ visibile dopo la moderazione. - Your comment will be visible after the moderation. - Comentariul tău va fi vizibil după moderare.
Ci sono 2535 persone collegate

< agosto 2019 >
L
M
M
G
V
S
D
   
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
 
             

Titolo
en - Global Observatory (605)
en - Science and Society (594)
en - Video Alert (346)
it - Osservatorio Globale (503)
it - Scienze e Societa (555)
it - Video Alerta (132)
ro - Observator Global (399)
ro - Stiinta si Societate (467)
ro - TV Network (149)
z - Games Giochi Jocuri (68)

Catalogati per mese - Filed by month - Arhivate pe luni:

Gli interventi piů cliccati

Ultimi commenti - Last comments - Ultimele comentarii:
Hi, it's Nathan!Pretty much everyone is using voice search with their Siri/Google/Alexa to ask for services and products now, and next year, it'll be EVERYONE of your customers. Imagine what you are ...
15/01/2019 @ 17:58:25
By Nathan
Now Colorado is one love, I'm already packing suitcases;)
14/01/2018 @ 16:07:36
By Napasechnik
Nice read, I just passed this onto a friend who was doing some research on that. And he just bought me lunch since I found it for him smile So let me rephrase that Thank you for lunch! Whenever you ha...
21/11/2016 @ 09:41:39
By Anonimo


Titolo

Latest NEWS @
www.TurismoAssociati.it

Non-Hodgkin lymphoma cured by CANNABIS. The video of Stan and Barb Rutner.

Dr. Joycelyn Elders, U.S. surgeon general: Myths About Medical Marijuana in The Providence Journal, 2004.

Marihuana vindeca CANCERUL: marturii despre uleiul de cocos si canabis.

Yahoo Incorporated Mail. My account recovery information is incorrect. The Password Helper says my password can't be reset online. "First time signing in here?" message.

All information in a video about Donatio Mortis Causa and The Venus Project

What is TOR browser?

British PM Johnson faces tough Brexit lunch with Macron

Stocks nudge down as investors crave clarity on Fed stance

Australia sees rush of Hong Kong millionaires amid unrest

Banks condemn HK violence as jewelers seek to put off big trade fair

'All the forces': China's global social media push over Hong Kong protests

China says hopes U.S. stops wrong tariff action, vows to retaliate if new levies imposed

Ultimele articole - Antena3.roSorin Blejnar ?i so?ia sa, trimi?i în judecata. Acuza?ii de luare de mita

I-a trimis mamei o poza din noul sau dormitor, dar adolescenta a ratat un detaliu ru?inos. „Sunt atat de idioata!” (FOTO)

Audieri de utima ora! Imagini revoltatoare în fa?a sediului DIICOT. Familia lui Gheorghe Dinca, agresiva cu jurnali?tii

SONDAJ: Cum este perceputa pacea mondiala în România?

HOROSCOP. Jupiter in Sagetator 2019: Ce î?i rezerva astrele, în func?ie de zodie. Începe o perioada norocoasa - FECIOARELE se simt din ce în ce mai bine

Un ora? din Brazilia a fost cuprins brusc de întuneric, în plina zi. „Am crezut ca vine Apocalipsa”





22/08/2019 @ 11:20:50
script eseguito in 891 ms