HOME >> BIOLOGY >> NEWS
Ultrasound and algae team up to clean mercury from sediments

Ultrasound and algae can be used together as tools to clean mercury from contaminated sediment, according to an Ohio State University study.

This research could one day lead to a ship-borne device that cleans toxic metals from waterways without harming fish or other wildlife, said Linda K. Weavers, the John C. Geupel Chair in Civil Engineering at Ohio State.

Doctoral student Ziqi He described the group's latest results in a poster session March 27 at the American Chemical Society meeting in Atlanta.

Weavers' research group previously determined that ultrasonic vibrations can shake mercury loose from sediment.

"We found ultrasound to be very effective at getting mercury out of sediment and into water," He explained. "But then we needed a third party to get the mercury out of the water. That's how we got the idea to add a biological element to the treatment."

Weavers and He joined with Richard Sayre, professor of plant, cellular and molecular biology at Ohio State, and Surasak Siripornadulsil, a former graduate student in the university's biophysics program. Sayre's team has genetically modified a species of algae to boost its natural ability to absorb heavy metals.

In laboratory tests, student He vibrated an ultrasonic probe inside beakers containing water, sediment, and algae. The vibrations freed mercury from the sediment, and within seconds, the algae adsorbed up to 60 percent of the mercury from the water. The combined system of ultrasound and algae removed 30 percent of the mercury from sediment within the first few minutes.

There are alternative cleanup methods that also absorb a high percentage of metals, Sayre admitted, but they are less selective -- they absorb all metals. His modified algae species absorbs five times the normal amount of a select group of toxic metals, including mercury, cadmium, copper, and zinc.

"Say you were trying to clean water that contained effluent with a lot of calcium
'"/>

Contact: Richard Sayre
Sayre.2@osu.edu
614-292-2587
Ohio State University
27-Mar-2006


Page: 1 2

Related biology news :

1. June 2007 issue of the Journal of Ultrasound in Medicine focuses on contrast-enhanced ultrasound
2. Ultrasound could help couples undergoing IVF
3. Ultrasound affects embryonic mouse brain development
4. Ultrasounds show mothers drinking shrinks fetal brain
5. Ultrasound a diagnostic tool for space, sports and more
6. Florida Tech explores microalgae for biofuel
7. Cold climate produced by algae contributed to onset of multicellular life
8. Chemicals in brown algae may protect against skin cancer
9. New group of algae discovered: Picobiliphytes
10. A new male-specific gene in algae unveils an origin of male and female
11. Scientists learning to create nanomaterials based on micro-algae patterns

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:8/12/2020)... ... 2020 , ... Both Roche, based in Basel, Switzerland, and ... with Housey Pharma’s HMI subsidiary to gain access to its core-enabling technology for ... Development spending in excess of US $10 billion. , Scientists at Housey Pharma ...
(Date:8/7/2020)... FRANCISCO (PRWEB) , ... August 06, 2020 , ... ... life sciences industry, is pleased to announce that Eric Chen and Jessica Wong ... President of Product Management & Strategy, respectively. , Eric Chen heads development efforts ...
(Date:8/5/2020)... ... August 05, 2020 , ... Regenative Labs has received approval ... CoreText™ and ProText™, making them the first Wharton’s jelly allografts to be assigned a ... The company’s solutions are the first Wharton’s jelly allograft product to be recognized as ...
Breaking Biology News(10 mins):
(Date:8/12/2020)... , ... August 11, 2020 ... ... biopharmaceutical cold chain validation engineering firm, is making available for free its ... need to incorporate concurrent transport simulation testing into today’s biologics licensing application ...
(Date:8/3/2020)... ... ... Introducing Ardent Animal Health – MediVet Biologics rebrands company and positions its platform ... Biologics since its formation in 2016, the company is relaunching itself under the Ardent ... its base of innovative therapies for osteoarthritis and cancer. , ...
(Date:7/31/2020)... SHREWSBURY, Mass. (PRWEB) , ... July 29, 2020 ... ... clad wire that can combine up to three different materials for use with ... can combine up to three materials to meet specific design requirements, performance, and ...
(Date:7/31/2020)... ... July 30, 2020 , ... ... sciences industry, today announced the release of its signature product called Beacon ... Liaisons (MSLs) and other field medical professionals. , Beacon helps MSLs ...
Breaking Biology Technology:
Cached News: