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Lignin polycondensation reaction

 Last Update: 2021-11-04
 Source: Internet
 Author: User

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[Preparation] Lignin also modified lignin reaction cationic flocculant prepared by polycondensation

The specific preparation process is as follows: place a three-necked flask equipped with a stirrer, a water condenser and a thermometer in a water bath

[Application] The chromaticity of heavy leather wastewater is generally very high, sometimes more than a thousand times.

Table 3-63 Treatment effect of heavy leather wastewater

In addition, experiments have also found that the flocculating particles formed by the urea-formaldehyde modified lignin flocculant and the vegetable tanning agent in the wastewater are much larger than the lignin and vegetable tanning agent, and the particles are much denser

Related link: Modification of lignin-acrylamide graft copolymer

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