The influence of bleaching chemicals and lignin content on the formation of polychlorinated dioxins and dibenzofurans
| Autor: | Lars Renberg, Peter Axegård |
|---|---|
| Rok vydání: | 1989 |
| Předmět: |
Environmental Engineering
Softwood Health Toxicology and Mutagenesis chemistry.chemical_element engineering.material Oxygen chemistry.chemical_compound stomatognathic system polycyclic compounds Chlorine Environmental Chemistry Organic chemistry Lignin heterocyclic compounds Aqueous solution Pulp (paper) Significant difference Public Health Environmental and Occupational Health General Medicine General Chemistry Pulp and paper industry Pollution stomatognathic diseases chemistry Kraft process engineering |
| Zdroj: | Chemosphere. 19:661-668 |
| ISSN: | 0045-6535 |
| DOI: | 10.1016/0045-6535(89)90387-1 |
| Popis: | The determination of chlorinated dibenzo-p-dioxins and dibenzofurans in pulp and aqueous filtrate from pulp bleaching showed that the most important variable is the consumption of molecular chlorine (Cl2) expressed as the ratio between chlorine and the lignin content (Cl2-multiple). The formations of the dioxins and dibenzofurans increased drastically above a certain critical level and below this level the formations were very low. No significant difference between oxygen delignified and non-oxygen delignified softwood kraft pulp could be established. |
| Databáze: | OpenAIRE |
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