Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Holistic approach to pollution

09.11.2007
A new study suggests that a holistic approach is needed in assessing the potential environmental and health effects of toxic effluent from industry. The study is published today in the Inderscience publication the International Journal of Environment and Pollution.

Studies of industrial effluent toxicity usually focus on a single contaminant, such as an environmental or marine pollutant, a potential carcinogen, or a toxic heavy metal. However, according to Tatjana Tišler of the National Institute of Chemistry, in Ljubljana, and Jana Zagorc-Koncan of the University of Ljubljana, Slovenia, toxicity tests of effluent using bacteria generally underestimate the total toxicity.

Effluents from industrial or municipal sources may contain hundreds to thousands of chemicals, but only a few are responsible for aquatic toxicity. Simply adding together the individual toxicities of each chemical present is not a reliable way to predict the total toxicity of effluent, the researchers say. An underestimation of whole-effluent toxicity could have seriously detrimental effects on the marine environment.

The researchers point out that the prediction of waste water toxicity usually does not take into account any possible interactions between the compounds in the wastewater sample. The presence of a particular chemical may make another more easily absorbed by aquatic creatures or plants, for instance. Moreover, some highly toxic chemicals may go undetected in a complex waste water mixture.

By testing waste water samples from a tannery, a pharmaceutical plant, and a chemical factory, the researchers were able to demonstrate the presence of key toxic chemicals in the samples and their toxic effects on bacteria, algae, daphnids and fish. Their tests demonstrated a higher toxicity of the whole sample compared with tests carried out on individual pollutants. "Our results obtained clearly demonstrate the importance of using the ‘whole-effluent’ toxicity approach for a reliable assessment of wastewater quality," the researchers say.

Jim Corlett | alfa
Further information:
http://www.inderscience.com

More articles from Ecology, The Environment and Conservation:

nachricht Finding plastic litter from afar
19.11.2018 | Carl von Ossietzky-Universität Oldenburg

nachricht Despite government claims, orangutan populations have not increased. Call for better monitoring
06.11.2018 | Deutsches Zentrum für integrative Biodiversitätsforschung (iDiv) Halle-Jena-Leipzig

All articles from Ecology, The Environment and Conservation >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: UNH scientists help provide first-ever views of elusive energy explosion

Researchers at the University of New Hampshire have captured a difficult-to-view singular event involving "magnetic reconnection"--the process by which sparse particles and energy around Earth collide producing a quick but mighty explosion--in the Earth's magnetotail, the magnetic environment that trails behind the planet.

Magnetic reconnection has remained a bit of a mystery to scientists. They know it exists and have documented the effects that the energy explosions can...

Im Focus: A Chip with Blood Vessels

Biochips have been developed at TU Wien (Vienna), on which tissue can be produced and examined. This allows supplying the tissue with different substances in a very controlled way.

Cultivating human cells in the Petri dish is not a big challenge today. Producing artificial tissue, however, permeated by fine blood vessels, is a much more...

Im Focus: A Leap Into Quantum Technology

Faster and secure data communication: This is the goal of a new joint project involving physicists from the University of Würzburg. The German Federal Ministry of Education and Research funds the project with 14.8 million euro.

In our digital world data security and secure communication are becoming more and more important. Quantum communication is a promising approach to achieve...

Im Focus: Research icebreaker Polarstern begins the Antarctic season

What does it look like below the ice shelf of the calved massive iceberg A68?

On Saturday, 10 November 2018, the research icebreaker Polarstern will leave its homeport of Bremerhaven, bound for Cape Town, South Africa.

Im Focus: Penn engineers develop ultrathin, ultralight 'nanocardboard'

When choosing materials to make something, trade-offs need to be made between a host of properties, such as thickness, stiffness and weight. Depending on the application in question, finding just the right balance is the difference between success and failure

Now, a team of Penn Engineers has demonstrated a new material they call "nanocardboard," an ultrathin equivalent of corrugated paper cardboard. A square...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

“3rd Conference on Laser Polishing – LaP 2018” Attracts International Experts and Users

09.11.2018 | Event News

On the brain’s ability to find the right direction

06.11.2018 | Event News

European Space Talks: Weltraumschrott – eine Gefahr für die Gesellschaft?

23.10.2018 | Event News

 
Latest News

How Humans and Machines Navigate Complex Situations

19.11.2018 | Science Education

Finding plastic litter from afar

19.11.2018 | Ecology, The Environment and Conservation

Channels for the Supply of Energy

19.11.2018 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>