Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Fine particle emissions from waste incineration can be purified

23.02.2006


"Efficient flue gas purification equipment at large waste incineration plants can reduce flue gas emissions, and cut the amounts of fine particles and heavy metals containing harmful compounds, to the levels required by the Waste Incineration Directive," explains senior research scientist Carl Wilen of the Technical Research Centre of Finland. Fine particle emissions from waste incineration and their purification have been studied as part of the Tekes FINE Particles technology programme.



Increasing waste recovery rates also places demands on the use of waste as a source of energy. The new EU Waste Incineration Directive which comes into force at the beginning of 2006 carefully defines what waste incineration plants are allowed to release into the air.

"We are studying the formation of fine particles in waste incineration and the role played by the quality of waste in the reduction of fine particle emissions. Fine particle emissions from waste incineration are a more serious problem than other emissions because they can be inhaled deep into the lungs and they contain heavy metals, for example," explains Carl Wilen.


Wilen has been in charge of a project in the FINE Particles technology programme in which fine particle emissions in waste incineration, purification techniques and the impact of the waste quality have been studied.

In addition to the Technical Research Centre of Finland, Åbo Akademi, the University of Oulu, the Finnish Meteorological Institute, and ten companies ranging from manufacturers of recovered fuel and incineration boilers to suppliers of flue gas filters are involved in the project.

In the project, fine particle emissions have been studied at five plants; at a pilot plant, two full-scale waste incineration plants and two parallel waste incineration plants.

Strict EU limits for waste incineration emissions

Tests were carried out at the pilot plant to study how sorting and pre-treating waste influences the formation of fine particles. More studies will be carried out on whether sorting of waste has any effect on reducing particle emissions so that less money would have to be spent on the purification process. Under the EU Waste Incineration Directive which comes into force at the beginning of 2006 strict emission requirements must be met before any waste is incinerated.

"In incineration of sorted waste the level of fine particle emissions before flue gas purification is smaller than in what is called mass incineration of mixed waste. Is the sorting of waste therefore necessary if the flue gas purification technology is so effective? The EU directive sets very strict limits for emissions and these limits are far stricter than those applying to emissions from coal-fired or biomass plants."

Eeva Ahola | alfa
Further information:
http://www.tekes.fi/english/programmes/fine

More articles from Ecology, The Environment and Conservation:

nachricht How fires are changing the tundra’s face
12.12.2017 | Gesellschaft für Ökologie e.V.

nachricht Using drones to estimate crop damage by wild boars
12.12.2017 | Gesellschaft für Ökologie e.V.

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: Long-lived storage of a photonic qubit for worldwide teleportation

MPQ scientists achieve long storage times for photonic quantum bits which break the lower bound for direct teleportation in a global quantum network.

Concerning the development of quantum memories for the realization of global quantum networks, scientists of the Quantum Dynamics Division led by Professor...

Im Focus: Electromagnetic water cloak eliminates drag and wake

Detailed calculations show water cloaks are feasible with today's technology

Researchers have developed a water cloaking concept based on electromagnetic forces that could eliminate an object's wake, greatly reducing its drag while...

Im Focus: Scientists channel graphene to understand filtration and ion transport into cells

Tiny pores at a cell's entryway act as miniature bouncers, letting in some electrically charged atoms--ions--but blocking others. Operating as exquisitely sensitive filters, these "ion channels" play a critical role in biological functions such as muscle contraction and the firing of brain cells.

To rapidly transport the right ions through the cell membrane, the tiny channels rely on a complex interplay between the ions and surrounding molecules,...

Im Focus: Towards data storage at the single molecule level

The miniaturization of the current technology of storage media is hindered by fundamental limits of quantum mechanics. A new approach consists in using so-called spin-crossover molecules as the smallest possible storage unit. Similar to normal hard drives, these special molecules can save information via their magnetic state. A research team from Kiel University has now managed to successfully place a new class of spin-crossover molecules onto a surface and to improve the molecule’s storage capacity. The storage density of conventional hard drives could therefore theoretically be increased by more than one hundred fold. The study has been published in the scientific journal Nano Letters.

Over the past few years, the building blocks of storage media have gotten ever smaller. But further miniaturization of the current technology is hindered by...

Im Focus: Successful Mechanical Testing of Nanowires

With innovative experiments, researchers at the Helmholtz-Zentrums Geesthacht and the Technical University Hamburg unravel why tiny metallic structures are extremely strong

Light-weight and simultaneously strong – porous metallic nanomaterials promise interesting applications as, for instance, for future aeroplanes with enhanced...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

See, understand and experience the work of the future

11.12.2017 | Event News

Innovative strategies to tackle parasitic worms

08.12.2017 | Event News

AKL’18: The opportunities and challenges of digitalization in the laser industry

07.12.2017 | Event News

 
Latest News

A whole-body approach to understanding chemosensory cells

13.12.2017 | Health and Medicine

Water without windows: Capturing water vapor inside an electron microscope

13.12.2017 | Physics and Astronomy

Cellular Self-Digestion Process Triggers Autoimmune Disease

13.12.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>