Innovation provider

Nordisk Aluminat A/S

Contact

Stejlhoej 16
DK-4400 Denmark
tel. +45 59 55 07 00
info@aluminat.dk
www.aluminat.dk

Description

As early as 1915, it was known that the burning of fossil fuels could cause air pollution, but it was not until some 30 years later that it was recognized that pollution could be caused by traffic emissions.
Today, air pollution is a global issue. In 2000, the World Health Organization, WHO, estimated that between 2.5 and 11 per cent of all deaths are related to air pollution.
In 1992, the EU implemented a framework directive on air pollution. This directive was later supplemented by various daughter directives – most recently DIRECTIVE 2008/50/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 21 May 2008 on ambient air quality and cleaner air for Europe. This directive stipulates threshold values of various substances, such as particles, in the air.
Nearly all EU member states need to make an effort to observe the threshold values set. For this reason, a large number of EU subsidised projects have been carried out in order to improve air quality. For example, special focus has been put on particle pollution in the projects KAPA GS, SPAS and most recently CMA+.
The EU LIFE CMA+ project is the third in the line of EU supported projects on the reduction of particle pollution. Tests carried out in the KAPA GS project with CMA (calcium magnesium acetate) as a dust binding agent showed a significant reduction of particle pollution in the streets where it was used. In this project, CMA is also used as a de-icing agent during the winter period.
Nordisk Aluminat A/S in Danmark manufactures and supplies the CMA.
CMA is manufactured from lime, magnesium and acetic acid. Undissolved particles in the product are removed by filtration. ICE & DUST-AWAY is certified according to the Nordic Ecolabel the Swan (these criteria are only available for de-icing agents).
ICE & DUST-AWAY is supplied in containers of 20 kg, pallet tanks of 1000 litres and in bulk. Nordisk Aluminat supplies this product all over Europe – to businesses and consumers.


 

Advantages

ICE & DUST-AWAY (25 % calcium magnesium acetate)
  • labelled with the Nordic eco-label THE SWAN (www.eco-label.dk)  
  • effective at temperatures down to -14 ºC
  • has a freezing point of -19 ºC
  • is dosed at 5 – 10 g/m2 for preventing slippery roads
  • prevents slippery roads up to 60 hours
  • clings to the road and retains its effect for a long time – whereby spraying  intervals can be prolonged
  • is a liquid and will not blow away
  • has no adverse effects on:                
              - groundwater
              - concrete / tiles / asphalt
                                            • plants
                                            • animal paws
                                            • footwear
              - cars / iron / metal

Innovative aspects (ecologic, social and economic)

Normaly de-icers and dust binders contain chloride whis is harmfull to the environmental, road constructions, cars etc. CMA dos not contain chlorides.

Application examples

CMA for Dust Binding Applications
CMA contains calcium and magnesium and absorbs moisture from the air enabling the compound to bind dust. Even if the product dries out during the day, it may absorb more moisture during the night and thus regain its ability to bind dust. The product is water-soluble and is washed away during rain.
When CMA is used for the reduction of particle pollution (measured as PM10), the particles which settle are bound. A significant part of particle pollution is caused by the whirling up of particles which have already settled. Thus, by binding these particles to the road, the particle concentration in the air will be reduced significantly. In previous projects, reductions of up to 25 % have been measured.

The CMA dose depends greatly on the substrate. On a hard substrate, the drops can be placed several centimetres apart. On a porous substrate (such as loose gravel or riding arenas) the loose layer must be moistened thoroughly in order to avoid the surfacing of dry material when you walk or drive on the surface. If the loose layer is too thick to enable moistening of the entire layer, the dust binding result will not be satisfactory. The amount varies from 10 g/m2 on a solid road to 300-400 g/m2 on loose material. High doses should be applied by means of several treatments (e.g. 100 g/m2 per dose).

CMA as De-Icing Agent
CMA has a lower freezing point than water and can be used to thaw ice and snow. As long as the solution of CMA and the melting water has a lower freezing point than the surroundings, the product will work. This means that the dose depends on the temperature and the amount of snow or ice to be thawed. Nordisk Aluminat A/S recommends that CMA is used as a protective measure in order to prevent the snow from sticking to the surface. Snow which has already fallen should be swept away before CMA is applied again. The best application is achieved by using equipment with a spraying boom rather than a revolving plate distributor. On staircases and in other small areas, a weed sprayer can be used.
 

Cost

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Country of origin

Country of application

Year

2004

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