Method for performing ECF bleaching on bamboo pulp with assistance of bio-enzyme pretreatment

Method for performing ECF bleaching on bamboo pulp with assistance of bio-enzyme pretreatment

The invention discloses a method for performing ECF bleaching on bamboo pulp with assistance of bio-enzyme pretreatment. The method includes the first step of xylanase pretreatment, the second step of laccase pretreatment and the third step of ECF bleaching, wherein the third step of ECF bleaching i...

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Hauptverfasser: TAN CHENGRONG, DU YINGYING, SONG XUEPING, JIANG YAN, LIU XIUYU, NIE SHUANGXI, XIE QIUXIA, RONG XIANJIAN
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Sprache:eng
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APPARATUS THEREFOR
PAPER-MAKING
PRODUCTION OF CELLULOSE
PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCESFROM CELLULOSE-CONTAINING MATERIALS
REGENERATION OF PULPING LIQUORS
TEXTILES
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creator TAN CHENGRONG
DU YINGYING
SONG XUEPING
JIANG YAN
LIU XIUYU
NIE SHUANGXI
XIE QIUXIA
RONG XIANJIAN
description The invention discloses a method for performing ECF bleaching on bamboo pulp with assistance of bio-enzyme pretreatment. The method includes the first step of xylanase pretreatment, the second step of laccase pretreatment and the third step of ECF bleaching, wherein the third step of ECF bleaching includes the procedures of D0-stage bleaching, EP-stage alkali extraction and D1-stage bleaching. By means of the method, the whiteness of bleached bamboo pulp is increased by 9.1%-15.3%, the AOX formation quantity of bleaching wastewater is lowered by 26.9%-38.6%, and pollution to the environment is reduced. Compared with the prior art, the method has the advantages of increasing the whiteness of sulphate bamboo pulp bleached in an ECF mode, lowering the AOX formation quantity of bleaching wastewater, reducing pollution to the environment and enabling wastewater discharge of pulping and papermaking enterprises to meet wastewater discharge requirements of new national standards of China.
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subjects APPARATUS THEREFOR
PAPER-MAKING
PRODUCTION OF CELLULOSE
PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCESFROM CELLULOSE-CONTAINING MATERIALS
REGENERATION OF PULPING LIQUORS
TEXTILES
title Method for performing ECF bleaching on bamboo pulp with assistance of bio-enzyme pretreatment
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