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Elemental chlorine free : ウィキペディア英語版
Elemental chlorine free
Elemental chlorine free (ECF) 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. The traditional ECF sequence is DEopDEpD using the common letter symbols for bleaching stages,〔(【引用サイトリンク】title=PaperOnWeb description of bleaching sequences )〕 though many improved sequences are available.〔
Totally chlorine free (TCF) is paper that does not use any chlorine compounds for wood pulp bleaching.
==See also==

* Environmental issues with paper

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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