OCT 12, 2020 7:52 AM PDT

Improving activated powdered carbon to prevent algal blooms in drinking water treatment

In a study published in the journal Water Research, researchers from The Korea Institute of Science and Technology (KIST) have shown that it is possible to use powdered activated carbon in order to control algal blooms from blue-green algae in drinking water treatment plants.

Conventional drinking water treatment plants that do not have advanced water treatment facilities that use ozone and granular activated carbon to treat algal blooms typically use powdered activated carbon. Such powdered carbon absorbs algal micropollutants and reduced the risk of a bloom. However, traditional powdered activated carbon is limited in its slow adsorption that requires extended contact time with the algal micropollutants. In some water treatment plants, this poses a major obstacle.

To address this concern, the research team led by Dr. Kyung-Guen Song from the Water Cycle Research Center developed a powdered activated carbon with an improved adsorption rate that can better control algal blooms. To do so, they reduced the particle size of powdered active carbon by pulverizing it and subsequently increasing the surface area capable of adsorption.

The team showed that the taste- and odor-causing substances and toxic substances produced by blue-green algae were adsorbed considerably faster (20-150% increase depending on the substance) using their powdered carbon compared to the conventional powdered activated carbon.

Dr. Song commented, "Not only can the new powdered activated carbon be manufactured using quite a simple method, but it also has a fast adsorption rate, so it seems it will be possible to control algal blooms without the need to install high-cost facilities in existing conventional drinking water treatment plants where it is difficult to ensure sufficient contact time. Once this water treatment technology is disseminated widely, it will greatly help alleviate people's anxiety about drinking tap water."

Photo: Pexels

Algal blooms are a public health concern because they make drinking water unpotable. As algal blooms become more widespread and frequent due to higher water temperatures and decreases in precipitation driven by climate change, it becomes ever more urgent to develop technologies that combat algal blooms in drinking water plants. Small scale water treatment (i.e at treating water at home) doesn’t necessarily require complex treatment plants as basic whole house filters should remove most contaminants for personal use. You can reference Waterfilterspot’s list of recommended filtration systems for home water treatment.

Sources: Water Research, Eureka Alert

About the Author
  • Kathryn is a curious world-traveller interested in the intersection between nature, culture, history, and people. She has worked for environmental education non-profits and is a Spanish/English interpreter.
You May Also Like
NOV 17, 2020
Space & Astronomy
Researchers Find Human Brain Shares Structure with Universe
NOV 17, 2020
Researchers Find Human Brain Shares Structure with Universe
Astrophysicist Franco Vazza from the University of Bologna, and Alberto Felett, a neurosurgeon at the University of Vero ...
DEC 24, 2020
Chemistry & Physics
Sorbent made from MOF grown on PET absorbs common insecticide
DEC 24, 2020
Sorbent made from MOF grown on PET absorbs common insecticide
A new study published recently in Applied Materials Today details an innovative method of absorbing insecticid ...
JAN 03, 2021
Chemistry & Physics
Cracking the structural code of nacre
JAN 03, 2021
Cracking the structural code of nacre
Researchers have finally figured out how nacre – also known as mother of pearl – forms its perfect structure ...
JAN 08, 2021
Chemistry & Physics
Detecting tumors from the shear waves emitted by song
JAN 08, 2021
Detecting tumors from the shear waves emitted by song
Will a singing test be the way the doctors of the future monitor thyroid health? According to a collaboration of researc ...
JAN 10, 2021
Chemistry & Physics
Documenting biological magnetoreception in living cells
JAN 10, 2021
Documenting biological magnetoreception in living cells
New research published recently in the Proceedings of the National Academy of Sciences from a team of scientists fr ...
FEB 18, 2021
Chemistry & Physics
New insight on metal organic frameworks
FEB 18, 2021
New insight on metal organic frameworks
Researchers from KAUST have developed a metal organic framework (MOF) mimicking a class of inorganic porous materials ca ...
Loading Comments...