Introduction
Sustainability Report 2004
Environmental aspects
Industrial operations | Pulp production
The charts that follow indicate the Best Available Techniques (BAT) in Europe, according to the "European Commission's Best Available Techniques in the Pulp and Paper Industry Reference Document". The document does not contain some of the parameters used in Aracruz's indicators as presented in this report. To consult the document, please access the following site: ftp://ftp.jrc.es/pub/eippcb/doc/ppm_bref_1201.pdf.
Consumptions in the production of pulp
The higher consumption of soda at the Guaíba Unit stems from the current technological concept by displacement bleaching and acid stage. The technology will be improved in 2005 and the consumption of soda should be reduced by 20 kg/tsa.
| Barra do Riacho Unit |
Guaíba Unit | |||
| Electric energy | MW | % | MW | % |
|---|---|---|---|---|
| Self-generated | 1,459,000 | 98.19 | 353.597 | 89,41 |
| Purchased | 27,108 | 1.81 | 41,868 | 10.59 |
| Fuel consumption | GJ | % | GJ | % |
| Renewable (1) | 53,506,568 | 94.0 | 7,290,450 | 54.57 |
| Non-renewable (2) | 3,390,307 | 6.0 | 6,070,343 | 45.43 |
(1) Black liquor (85.7%), biomass (8.1%), hydrogen, non-condensable gases and methanol (0.22%).
(2) Fuel oil and natural gas.
Emissions, effluents and residues in the production of pulp
