Elemental chlorine free
Encyclopedia
Elemental chlorine free is a technique that uses chlorine dioxide
for the bleaching of wood pulp
. It does not use elemental chlorine
gas during the bleaching process and prevents the formation of dioxins and dioxin-like compounds
, carcinogen
s.
Totally chlorine free
(TCF) is paper that does not use any chlorine compounds for wood pulp bleaching.
Chlorine dioxide
Chlorine dioxide is a chemical compound with the formula ClO2. This yellowish-green gas crystallizes as bright orange crystals at −59 °C. As one of several oxides of chlorine, it is a potent and useful oxidizing agent used in water treatment and in bleaching....
for the bleaching of wood pulp
Bleaching of wood pulp
Bleaching of wood pulp is the chemical processing carried out on various types of wood pulp to decrease the color of the pulp, so that it becomes whiter. The main use of wood pulp is to make paper where whiteness is an important characteristic...
. It does not use elemental chlorine
Chlorine
Chlorine is the chemical element with atomic number 17 and symbol Cl. It is the second lightest halogen, found in the periodic table in group 17. The element forms diatomic molecules under standard conditions, called dichlorine...
gas during the bleaching process and prevents the formation of dioxins and dioxin-like compounds
Dioxins and dioxin-like compounds
Dioxins and dioxin-like compounds are by-products of various industrial processes, and are commonly regarded as highly toxic compounds that are environmental pollutants and persistent organic pollutants . They include:...
, carcinogen
Carcinogen
A carcinogen is any substance, radionuclide, or radiation that is an agent directly involved in causing cancer. This may be due to the ability to damage the genome or to the disruption of cellular metabolic processes...
s.
Totally chlorine free
Totally chlorine free
Totally chlorine free is a technique that uses no chlorine compounds for the bleaching of wood pulp for paper production. This prevents the formation of dioxins, highly carcinogenic pollutants....
(TCF) is paper that does not use any chlorine compounds for wood pulp bleaching.
External links
- Alliance for Environmental Technology - ECF: The Sustainable Technology