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Flexographic deinking with electric field technology by destabilization and flotation.

机译：通过去稳定和浮选用电场技术进行的柔版印刷脱墨。

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摘要

Every year, millions of tons of paper are diverted from landfills and recycled. Newspaper constitutes a large portion of total paper recycled, providing a cheap source of raw material for the paper industry and helping sustainable forestry. The recycling of newsprint paper involves the separation of ink from the newsprint, which can be done either by flotation or washing. Conventional flotation processes for separating ink are not adequate for newsprint printed using flexography printing technique and with water-based ink. The removal of these flexographic water-based inks by washing is a better alternative. However, one drawback of washing is that it has lower yield. In addition, the subsequent wash filtrate is difficult and costly to decontaminate. The overall goal is to develop a combination of processes that can remove ink from a feedstock that contains up to 100% flexographic ink newsprint; in the context of process variables with known effects.;In the present work the objectives are to (1) demonstrate that incorporating an electric field into a conventional deinking process improves deinking efficiency, (2) propose a mechanism of how incorporating an electric field helps to improve deinking efficiency, (3) demonstrate that an electric field can decontaminate water containing flexographic inks and identify the mechanism behind electric field clarification of water, and (4) demonstrate that by incorporating electric fields into both the flotation deinking stage and water decontamination, the target deinking efficiency can be achieved.
机译：每年，有数百万吨的纸张从垃圾掩埋场转移并回收。报纸占可回收纸张总量的很大一部分，为造纸业提供了廉价的原材料来源，并帮助了可持续林业。新闻纸的回收涉及从新闻纸中分离墨水，这可以通过浮选或洗涤来完成。对于使用苯胺印刷技术和水基油墨印刷的新闻纸而言，传统的用于分离油墨的浮选工艺是不合适的。通过洗涤除去这些柔性版水性油墨是更好的选择。然而，洗涤的一个缺点是其产率较低。另外，随后的洗涤滤液难以净化并且花费高昂。总体目标是开发一系列工艺，以从包含高达100％柔性版印刷油墨新闻纸的原料中去除油墨。在具有已知作用的过程变量的背景下；在当前工作中，目标是（1）证明将电场合并到常规脱墨过程中可提高脱墨效率，（2）提出了一种机制，该方法可将电场合并为了提高脱墨效率，（3）证明了电场可以净化含苯胺印刷油墨的水并确定水电场澄清后的机理，并且（4）证明通过将电场结合到浮选脱墨阶段和水去污中，可以达到目标脱墨效率。

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