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:10/15/2014)... have linked increased resistance to bacterial pneumonia in female ... hormone estrogen. , Females are naturally more resistant to ... scientists has shown that increased resistance to bacterial pneumonia ... oxide synthase 3 (NOS3). They also show that this ... female sex hormone estrogen. , The team, lead by ...
(Date:10/14/2014)... shows SIRT6—a protein known to inhibit the growth ... skin cancers by turning on an enzyme that increases ... Previously considered protective, SIRT6 is part of a family ... stability and prevent some of the genetic flaws associated ... lead to cancer. This study, in the journal,s October ...
(Date:10/14/2014)... oil supplements, rich in omega-3 fatty acids, do not reduce ... the heart can beat as fast as 150 beats a ... Montreal Heart Institute were published in the Journal of ... For the trial, 337 patients with atrial fibrillation not receiving ... fish oil a day or to placebo for up to ...
Breaking Biology News(10 mins):Two-faced gene: SIRT6 prevents some cancers but promotes sun-induced skin cancer 2
(Date:10/20/2014)... Inc. (TSXV: BRM) ("Biorem" or "the Company") today announced four new ... and provides a good start to Q4.  The orders are for ... and one in the Middle East . ... Peter Bruijns , President & CEO. "Total bidding activity and ... have been for any complete year since the company has tracked ...
(Date:10/20/2014)... 20, 2014 OncLive® ... Cancer Center at Thomas Jefferson University has joined ... the Strategic Alliance Partnership program, the Sidney Kimmel ... to raise awareness of the Center’s cutting-edge research ... projects. Clinicians and other health care professionals from ...
(Date:10/19/2014)... OCTOBER 20-22, 2014: The 9th Annual ... take place at the Congress Center Basel, ... now available at http://www.abim.ch . ... from all over the globe will exchange ... products and developments on the world market. ...
(Date:10/19/2014)... Asia-Pacific Speech Analytics market report defines and segments the ... of revenue. This market is estimated to grow from ... at a Compound Annual Growth Rate (CAGR) of 23.9% ... of the Asia-Pacific Speech Analytics market report to get ... provides a glimpse of the segmentation in the market, ...
Breaking Biology Technology:Sidney Kimmel Cancer Center at Thomas Jefferson University Partners With OncLive 2Sidney Kimmel Cancer Center at Thomas Jefferson University Partners With OncLive 3The Asia-Pacific Speech Analytics market is estimated to reach $208 million by 2019 - New Report by MicroMarket Monitor 2The Asia-Pacific Speech Analytics market is estimated to reach $208 million by 2019 - New Report by MicroMarket Monitor 3The Asia-Pacific Speech Analytics market is estimated to reach $208 million by 2019 - New Report by MicroMarket Monitor 4
Cached News: