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:3/13/2017)... of security: Biometric Face Matching software  Continue Reading ... ... match face pictures against each other or against large databases. The recognition of ... ... for biometric Face Matching on the market. The speed is at 100 million ...
(Date:3/6/2017)... 6, 2017 Mintigo , the ... announced Predictive Sales Coach TM , its new ... intelligence into Salesforce. This unique AI application will ... organizations with deep knowledge of their customers and ... engagement. Predictive Sales Coach extends Mintigo,s existing customer ...
(Date:3/1/2017)... , March 1, 2017  Aware, Inc. (NASDAQ: ... announced that Richard P. Moberg has resigned, ... co-President and Chief Financial Officer and Treasurer of Aware ... to serve as a member of the Board of ... , Aware,s co-Chief Executive Officer and co-President, General Counsel ...
Breaking Biology News(10 mins):
(Date:3/22/2017)... ... 21, 2017 , ... Proper glycosylation is critical for the ... and/or decrease in antibody-dependent cellular cytotoxicity or complement-dependent cytotoxicity, there is a growing ... , To meet this demand, the team at SCIEX has developed a Fast ...
(Date:3/22/2017)... ... March 21, 2017 , ... ... unveiled its innovative Quantum peristaltic pump with patented ReNu single-use (SU) cartridge ... new standard for high-pressure feed pumps in SU tangential flow filtration (TFF), ...
(Date:3/22/2017)... N.J. and PETACH TIKVAH, Israel ... Inc. (NASDAQ: BCLI), a leading developer of adult stem ... Chaim Lebovits , Chief Executive Officer, will provide an ... Sachs Associates 2 nd Annual Neuroscience Biopartnering and ... at the New York Academy of Sciences. ...
(Date:3/20/2017)... ... ... and Whitehouse Laboratories, divisions of Albany Molecular Research, Inc, are looking forward to ... (PDA), the New York Interphex Show will open on March 21 and run through ... the educational and networking opportunities are extremely valuable. INTERPHEX is viewed as the key ...
Breaking Biology Technology: