HOME >> BIOLOGY >> NEWS
Faster coagulation rates found in natural systems could impact industrial processing

Using new ways to analyze and describe the rate at which minute ocean-going groups of bacteria or plankton coagulate, a Penn State engineer has found that large aggregates of these groups collide with and capture additional particles millions of times faster than predicted by existing theories.

Dr. Bruce E. Logan, the Kappe professor of environmental engineering, says, "Our results have caused us and many other scientists and engineers to think completely differently about how biological aggregates form in aqueous systems. Such coagulation processes are important in wastewater treatment and industrial manufacturing as well as the ocean and other natural water systems."

Logan is the first to apply the use of fractal geometry to aqueous biological aggregates. Objects arranged in fractal patterns, a snowflake, for example, often look "lacy" and every unit or fragment of it looks like the whole.

Previous methods for describing and predicting the dimensions of biological aggregates have been based on the analysis of single "ideal" particles such as a sphere. However, Logan points out that most real aggregates of interest form particles that have a variety of sizes and shapes. In order to analyze average properties of real aggregates, Logan and his research group have developed new techniques to estimate fractal dimensions and calculate the collision efficiencies between the fractal aggregate and new adhering particles.

Logan will describe the new techniques and calculations at the national meeting of the American Chemical Society in Washington, D. C. on Sunday, August 20. His keynote lecture is entitled, "Fractal Coagulation Processes.

In his experiments, Logan added fluorescent beads to water already containing bacterial aggregates. The coagulation rate, or the rate at which the beads attached to the bacterial aggregates, was calculated by using a microscope to observe and count them over time. He and his research associat
'"/>

Contact: Barbara Hale
bah@psu.edu
814-865-9481
Penn State
19-Aug-2000


Page: 1 2

Related biology news :

1. Faster carbon turnover in basal food-chain levels in aquatic than terrestrial ecosystems
2. Faster method for growing adult stem cells for bone regeneration developed at Hebrew University
3. Faster nanowires may advance nanotechnological applications for detecting glucose, hormones or DNA
4. Dismantling Dangerous Genetic Codes With A Faster, More Flexible RNA Mimic
5. Scientists Invent Faster Gene Function Identification System
6. Core Spins Faster Than Earth, Scientists Find
7. Intake Of Acetaminophen Increases Risk Of Excessive Anticoagulation In Patients Taking Warfarin
8. ICTP celebrates 40th anniversary, Legacy for the Future
9. New genetic research demonstrates possible cause of inherited form of Parkinsons disease
10. UNC research accelerates discovery of novel gene function
11. Land Regeneration Network celebrates first year success

Post Your Comments:
(Date:12/19/2014)... DUBLIN , Dec. 18, 2014 Research ... announced the addition of the "iPhone 5S ... Technology Report" report to their offering. ... Following the acquisition of AuthenTec in July 2012, ... iPhone 5S. It is currently the only device ...
(Date:12/17/2014)... FORT BELVOIR, Va. , Dec. 15, 2014 ... its efforts to make it easier to detect ... supply chain. Today the agency started ... marking. The capability will validate the authenticity of ... supply chain. The new quality control measures will ...
(Date:12/15/2014)... 12, 2014 Research and Markets ... the "Global Facial Recognition Market 2015-2019" ... http://photos.prnewswire.com/prnh/20130307/600769 Facial recognition is ... Facial recognition system measures the overall facial feature ... mouth, and the distance between eyes. Facial recognition ...
Breaking Biology News(10 mins):iPhone 5S Fingerprint Sensor - Apple/AuthenTec TMDR92 & Sapphire - Technology Report 2Defense Logistics Agency Launches DNA Marking Capability to Strengthen Microcircuit Supply Chain 2Defense Logistics Agency Launches DNA Marking Capability to Strengthen Microcircuit Supply Chain 3Global Facial Recognition Market 2015-2019: Key Vendors are 3M Cogent, Cognitec Systems, NEC and Safran Group 2Global Facial Recognition Market 2015-2019: Key Vendors are 3M Cogent, Cognitec Systems, NEC and Safran Group 3
(Date:12/19/2014)... 19, 2014 Decision Resources Group finds that ... a 12 percent compound annual growth rate through 2023. ... population and the increasing adoption of dental implants. Growing ... will also spur demand for dental biomaterials because they ... periodontal treatments. Other key findings from Decision ...
(Date:12/19/2014)... ME (PRWEB) December 18, 2014 Ed ... director of the Center for Excellence in the Neurosciences ... New England, has been selected as a member of ... is the first neuroscientist from Maine to receive this ... nonprofit organization supported entirely by the Dana Foundation. ...
(Date:12/19/2014)... December 18, 2014 With only 2 ... special on Sartorius Biohit products . The product ... pipettes, Picus Electronic Pipette Trade-in Program, and free pipette ... Safety officers around the world. They are ideal for ... features include:, ,     Full volume range of ...
(Date:12/17/2014)... NY (PRWEB) December 16, 2014 The ... changes since 2013, which is why IBISWorld updated its ... industry continues to benefit from an intensified focus on ... proposal for new emission standards for power plants and ... operators. According to IBISWorld Industry Analyst Sarah Kahn, “a ...
Breaking Biology Technology:Latin American Dental Biomaterial Market Will Expand at a 12 Percent Annual Growth Rate Through 2023 2Latin American Dental Biomaterial Market Will Expand at a 12 Percent Annual Growth Rate Through 2023 3UNE's Ed Bilsky Named Member of Dana Alliance for Brain Initiatives 2UNE's Ed Bilsky Named Member of Dana Alliance for Brain Initiatives 3Major Pipette Distributor Pipette.com Announces Sartorius Year End Specials 2Activated Carbon Manufacturing in the US Industry Market Research Report Has Been Updated from IBISWorld 2Activated Carbon Manufacturing in the US Industry Market Research Report Has Been Updated from IBISWorld 3
Cached News: