Analyses of Paper and Wood Components during Recycling Process

回收过程中纸张和木材成分的分析

基本信息

批准号：
08456085
负责人：
ISOGAI Akira
金额：
$ 4.86万
依托单位：
The University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1996
资助国家：
日本
起止时间：
1996 至 1998
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08456085/
关键词：
Recycled paper Recycling Deinking Paper Wood Biodegradability Incinerated ash Wet end additives フローテーション

项目摘要

A.Quantitative determination methods of paper and wood components such as sizes, retention aides, strength additives, fillers and others have been established using pyrolysis-gas chromatography, enzymatic hydrolysis followed by bio-sensor measurement and X-ray fluorescence analysis.B.Most paper additives such as sizes, retention aids, strength additives and fillers were removed from pulp fibers by defibrating and de-inking processes of the recycled paper. These paper additive components rejected from recycled pulp fibers are classified into abolished fractions, which are eventually incinerated to ash.C.When amylase was added to de-inking mixture of copied waste paper under neutral conditions, removal ability of the residual toners from the recycled pulp was improved. However, the toner components removed from the pulp are now treated by incineration in recycling paper mills.D.Sludge and incinerated ash samples were collected from pulp and paper mills in Japan, and their elements were determined using an X-ray fluorescent analyzer. As reference samples, incinerated ash samples were collected from public garbage incineration centers. Also charcoal samples prepared from woody garbage of scrapped house were collected. The results show that main elements in the sludge and incinerated ash from pulp and paper mills are calcium, silica and aluminum, and these three elements occupied more than 60% of the samples. Also the incinerated ashes from public garbage incineration centers has Quite similar components to those from pulp and paper mills. Thus, the main components in public garbage must be paper and its related materials.

A.使用热解气，酶水解，生物传感器测量和X射线荧光分析的纸张和木材水解的纸张和木材成分的定量确定方法，例如尺寸，保留助手，强度添加剂，填充剂和其他方法，建立回收纸的过程。这些被再生纸浆纤维被拒绝的纸张添加剂分类被分类为废除的馏分，最终将淀粉酶添加到淀粉酶添加到中性条件下复制废纸的混合物时，将残留粉末的去除能力，从复选的纸浆中删除。然而，现在从纸浆中取出的碳粉成分通过在回收造纸厂中进行焚化处理。作为参考样品，从公共垃圾焚化中心收集了焚化的灰分样品。还收集了用废弃房屋的木质垃圾制备的木炭样品。结果表明，污泥中的主要元素和纸浆和造纸厂的灰分是钙，二氧化硅和铝，这三个元素占据了60％以上的样品。此外，公共垃圾焚化中心的焚化灰分与纸浆和造纸厂的骨灰的组成部分非常相似。因此，公共垃圾中的主要组成部分必须是纸张及其相关材料。