文献类型：期刊文献

中文题名：化学机械浆制浆原料中过渡金属离子对其漂白性能的影响

英文题名：Effects of Transition Metal Ions in Raw Materials on the Bleachability of Chemical Mechanical Pulps

作者：焦婷[1] 赵志坤[2] 朱北平[1] 焦健[1] 房桂干[1,3] 邓拥军[1] 张凤山[3]

第一作者：焦婷

机构：[1]中国林业科学研究院林产化学工业研究所,江苏省生物质能源与材料重点实验室,江苏省林业资源高效加工利用协同创新中心,国家林业和草原局林产化学工程重点实验室,林木生物质低碳高效利用国家工程研究中心,江苏南京210042;[2]云南云景林纸股份有限公司,云南普洱666199;[3]山东华泰纸业股份有限公司,山东东营257335

年份：2024

卷号：43

期号：12

起止页码：84-93

中文期刊名：中国造纸

外文期刊名：China Pulp & Paper

收录：;北大核心:【北大核心2023】；

基金：国家自然科学基金面上项目“竹材机械浆中顽固发色基团的结构特点及其脱除机理研究”(32271974);泰山产业领军人才工程专项经费(tscy20200213)。

语种：中文

中文关键词：化学机械浆;制浆原料;金属离子;碱性H_(2)O_(2)漂白;预浸渍溶出物

外文关键词：chemical mechanical pulp;pulping material;metal ion;alkaline hydrogen peroxide bleaching;pre-impregnated residue

分类号：TS745

摘要：本研究以我国化学机械浆生产中主要使用的3种桉木和3种杨木为研究对象,比较了其浆料和预浸渍溶出物中过渡金属离子含量的差异,分析了过渡金属离子含量对浆料漂白性能以及预浸渍溶出物抗氧化性的影响。结果表明,桉木原料中较多的Mn^(2+)和杨木中较多的Fe^(3+)导致浆料的漂白性能较差;桉木和杨木预浸渍溶出物中较多的Fe^(3+)导致二者的抗氧化性较强,由此导致实际生产中化学品消耗量较高;对于完全脱除预浸渍溶出物的浆料,增加螯合剂用量对杨木的漂白性能无显著影响,对桉木的漂白性能有一定提高;对于保留预浸渍溶出物浆料,增加螯合剂用量比增加H_(2)O_(2)用量对2种浆料漂白性能的改善作用更明显。
In this study,three kinds of eucalyptus woods and three kinds of poplar woods,which were mainly used in the production of chemical mechanical pulp,were compared with the difference of transition metal ion content in the pulp and the pre-impregnated residues.The effects of transition metal ions in the pulp on the bleachability and the effects of metal ions in the pre-impregnated residues on oxidation resistance were analyzed.The results showed that high contents of Mn^(2+)in eucalyptus and the high contents of Fe^(3+)in poplar resulted in poor bleachability of the pulp.The high contents of Fe^(3+)in eucalyptus and poplar pre-impregnated residues led to the strong antioxidant properties,which resulted in high chemical consumption in actual production.For the completely removal of pre-impregnated residues,increasing the dosage of chelating agent had no significant effect on the bleachability of poplar,but had certain improvement on the bleachability of eucalyptus.For fully retained pre-impregnated residues,increasing the dosage of chelating agent had more obvious improvement on the bleachability than increasing the dosage of hydrogen peroxide.