Reduction Of Pollution In The Production Of Materials

Naturally, pollution from the building industry depends on the amount of resources used. Reductions are therefore a primary strategy - see Actions for resource conservation in the production of materials on page 6, Chapter 1 and Reduction of energy consumption in the building

Table 2.7 Energy sources and pollution1

Energy source

CO2

CO

NOx

SO2

Heavy metals

Dust

Aromatic hydrocarbons

Radioactivity

Sun

Water/wind/waves

Geothermal

Biomass burning

(x)2

x

x

(x)3

Biogas/bioethanol burning

(x)2

x

(x)3

Natural gas burning

x

x

x

x

Oil burning

x

x

x

x

x

x

x

Coal burning

x

x

x

x

x

x

x

Nuclear power

x

1 Emissions orginating from the transportation of fuels and the construction of the generation plants are not included.

2 Considered neutral since emissions are equal to initial uptake through photosynthesis.

3 Small amounts by effective combustion.

1 Emissions orginating from the transportation of fuels and the construction of the generation plants are not included.

2 Considered neutral since emissions are equal to initial uptake through photosynthesis.

3 Small amounts by effective combustion.

Climate impacts of paving slabs made in concrete and in granite, for use in Norway. The production of granite slabs has much less impact than the production of concrete slabs. But when importing granite from China the emissions of carbon dioxide from transport will quickly offset this advantage. Today China is the dominating producer of granite slabs for the European market (Berge, 2005).

Climate impacts of paving slabs made in concrete and in granite, for use in Norway. The production of granite slabs has much less impact than the production of concrete slabs. But when importing granite from China the emissions of carbon dioxide from transport will quickly offset this advantage. Today China is the dominating producer of granite slabs for the European market (Berge, 2005).

industry on page 21, Chapter 1. In addition, the following are important. Substitution to non-fossil energy sources for extraction of raw materials and production processes. The possibilities of using renewable energy sources such as solar, wind, hydropower and biomass should be investigated, and priority given to manufacturing processes and materials which put these principles into practice.

Reduced use of toxic chemicals. Preference to materials that are not based on hazardous ingredients or additives.

Careful utilization of natural resources. An increased use of materials that involve less environmentally-damaging methods of extraction and production would entail an increased use of renewable resources and recycled materials.

Efficient purification of industrial processes. There are plenty of possibilities in this area. It is even possible, in some cases, to reprocess waste for the manufacture of new products (see Chapter 12).

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