Navigation Links
Researchers building stronger, greener concrete with biofuel byproducts
Date:3/14/2013

MANHATTAN, KAN. -- Kansas State University civil engineers are developing the right mix to reduce concrete's carbon footprint and make it stronger. Their innovative ingredient: biofuel byproducts.

"The idea is to use bioethanol production byproducts to produce a material to use in concrete as a partial replacement of cement," said Feraidon Ataie, doctoral student in civil engineering, Kabul, Afghanistan. "By using these materials we can reduce the carbon footprint of concrete materials."

Concrete is made from three major components: portland cement, water and aggregate. The world uses nearly 7 billion cubic meters of concrete a year, making concrete the most-used industrial material after water, said Kyle Riding, assistant professor of civil engineering and Ataie's faculty mentor.

"Even though making concrete is less energy intensive than making steel or other building materials, we use so much of it that concrete production accounts for between 3 to 8 percent of global carbon dioxide emissions," Riding said.

To reduce carbon dioxide emissions from concrete production, the researchers are studying environmentally friendly materials that can replace part of the portland cement used in concrete. They are finding success using the byproducts of biofuels made from corn stover, wheat straw and rice straw.

"It is predicted that bioethanol production will increase in the future because of sustainability," Ataie said. "As bioethanol production increases, the amount of the byproduct produced also increases. This byproduct can be used in concrete."

The researchers are specifically looking at byproducts from production of cellulosic ethanol, which is biofuel produced from inedible material such as wood chips, wheat straw or other agricultural residue. Cellulosic ethanol is different from traditional bioethanol, which uses corn and grain to make biofuel. Corn ethanol's byproduct -- called distiller's dried grains -- can be used as cattle feed, but cellulosic ethanol's byproduct -- called high-lignin residue -- is often perceived as less valuable.

"With the cellulosic ethanol process, you have leftover material that has lignin and some cellulose in it, but it's not really a feed material anymore," Riding said. "Your choices of how to use it are a lot lower. The most common choices would be to either burn it for electricity or dispose of the ash."

When the researchers added the high-lignin ash byproduct to cement, the ash reacted chemically with the cement to make it stronger. The researchers tested the finished concrete material and found that replacing 20 percent of the cement with cellulosic material after burning increased the strength of the concrete by 32 percent.

"We have been working on applying viable biofuel pretreatments to materials to see if we can improve the behavior and use of ash and concrete," Riding said. "This has the potential to make biofuel manufacture more cost effective by better using all of the resources that are being wasted and getting value from otherwise wasteful material and leftover materials. It has the potential to improve the strength and durability of concrete. It benefits both industries."

The research could greatly affect Kansas and other agricultural states that produce crops such as wheat and corn. After harvesting these crops, the leftover wheat straw and corn stover can be used for making cellulosic ethanol. Cellulosic ethanol byproducts then can be added to cement to strengthen concrete.

"The utilization of this byproduct is important in both concrete materials and biofuel production," Ataie said. "If you use this in concrete to increase strength and quality, then you add value to this byproduct rather than just landfilling it. If you add value to this byproduct, then it is a positive factor for the industry. It can help to reduce the cost of bioethanol production."

The researchers have published some of their work in the American Society of Civil Engineer's Journal of Materials in Civil Engineering and are preparing several other publications. Ataie also was one of two Kansas State University graduate students named a winner at the 2013 Capitol Graduate Research Summit in Topeka. His poster was titled "Utilization of high lignin residue ash (HLRA) in concrete materials."


'/>"/>
Contact: Kyle Riding
riding@k-state.edu
785-532-1578
Kansas State University
Source:Eurekalert

Related biology news :

1. Fertilizers could help tackle nutritional deficiency in African country, researchers say
2. Stanford researchers map out an alternative energy future for New York
3. Asterixs Roman foes -- Researchers have a better idea of how cancer cells move and grow
4. Researchers find alternative cholesterol-lowering drug for patients who cant tolerate statins
5. Researchers develop tools for discovering new species
6. University of Illinois researchers develop AFM-IR for nanometer scale chemical identification
7. IRB Barcelona researchers discover mechanism that regulates steroid hormone production in Drosophila
8. Researchers discover gateway in nucleus has a second important job no one noticed before
9. Researchers explain a key developmental mechanism for the first time in plants
10. Researchers find molecular switch turning on self-renewal of liver damage
11. UGA researchers shed light on ancient origin of life
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/16/2017)... , May 16, 2017   Bridge Patient ... organizations, and MD EMR Systems , an ... partner for GE, have established a partnership to ... product and the GE Centricity™ products, including Centricity ... These new integrations will allow ...
(Date:4/19/2017)... April 19, 2017 The global ... landscape is marked by the presence of several large ... held by five major players - 3M Cogent, NEC ... accounted for nearly 61% of the global military biometric ... in the global military biometrics market boast global presence, ...
(Date:4/13/2017)... 13, 2017 UBM,s Advanced Design and Manufacturing ... feature emerging and evolving technology through its 3D Printing ... run alongside the expo portion of the event and ... demonstrations focused on trending topics within 3D printing and ... manufacturing event will take place June 13-15, 2017 at the ...
Breaking Biology News(10 mins):
(Date:5/23/2017)... Canada (PRWEB) , ... May 23, 2017 , ... ... Firmex FileSend, a cloud-based file transfer solution that makes it easy for organizations ... without having to worry about cumbersome FTP software or email file size limitations. ...
(Date:5/23/2017)... ... May 22, 2017 , ... NetDimensions has been ranked ... Research Globe™ for Corporate Learning, 2017. , Aragon Research defines Leaders as organizations ... effectively perform against those strategies. NetDimensions’ ranking as a Leader due to its ...
(Date:5/23/2017)... ... May 23, 2017 , ... Kathy Goin is ... Clinical Operations. She brings years of expertise in establishing and leading clinical operations ... as a licensed occupational therapist, through a variety of leadership roles in Clinical ...
(Date:5/22/2017)... ... May 22, 2017 , ... Stratevi, a boutique firm that partners ... Coast. It has opened an office in downtown Boston at 745 Atlantic Ave. ... more important to generate evidence on the value they provide, not just to patients, ...
Breaking Biology Technology: