Totally chlorine free
Encyclopedia
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 carcinogen
ic pollutants.
Elemental chlorine free
(ECF) is a technique that uses chlorine compounds rather than chlorine gas.
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...
compounds 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...
for paper production. This prevents the formation of dioxins
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:...
, highly 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...
ic pollutants.
Elemental chlorine free
Elemental chlorine free
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, carcinogens....
(ECF) is a technique that uses chlorine compounds rather than chlorine gas.