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Process for recycling sericin in reeling silk industrial waste water by utilizing 201*7 ion exchange resin

A technology of ion exchange resin and industrial wastewater, applied in the field of silk reeling industry, to achieve the effect of low overall production cost, low energy consumption, and no secondary pollution

Inactive Publication Date: 2019-07-23
ZHEJIANG UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] These methods have their own advantages, but there are also limitations in industrial production and application.

Method used

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  • Process for recycling sericin in reeling silk industrial waste water by utilizing 201*7 ion exchange resin
  • Process for recycling sericin in reeling silk industrial waste water by utilizing 201*7 ion exchange resin
  • Process for recycling sericin in reeling silk industrial waste water by utilizing 201*7 ion exchange resin

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example 1

[0030] 1. Main process: Sedimentation and filtration of industrial waste water to remove impurities, resin adsorption, elution, collection, concentration, drying, and sericin powder; among them:

[0031] Precipitation and filtration to remove impurities: the industrial wastewater of silk reeling adopts the method of sedimentation and filtration to remove insoluble impurities, and adopts a filter cloth with a sieve hole of 200 mesh;

[0032] Resin adsorption: the filtered silk reeling wastewater is adjusted to pH 2-3, and passed into the separation column filled with the resin at a flow rate of 5BV / h until the concentration of sericin in the effluent of the separation column is 0.05 mg / h. When the silk reeling waste water is stopped at the time of ml; the adsorbent filled in the separation column is commercially available 201 × 7 anion exchange resin and is pretreated (or regenerated); a column volume (1BV) is 250ml;

[0033] Elution and collection: Use NaOH solution with a pH ...

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Abstract

The invention discloses a method for recycling sericin in reeling silk industrial waste water. The reeling silk industrial waste water is subjected to processes, which comprise impurity removal via precipitation and filtration, resin adsorption, elution, collection and drying, to obtain sericin protein powder; the special points of the method are that in a resin adsorption process, adopted resin is 201*7 ion exchange resin, while the concrete processes of the impurity removal via precipitation and filtration, the resin adsorption, the elution, the collection and drying can refer to and adopt the prior art in the belonged field and relevant field. The recycle process of the recycle method adopts normal temperature operation, the equipment investment is low, the energy consumption is low, the operation is simple, and secondary pollution does not exist; by the 201*7 ion exchange resin which is selected via multiple times of experiments, has stronger adsorbability to sericin protein in reeling silk waste water and is extremely good in analytic effect simultaneously, the efficient recycle and enrichment of the sericin protein and the recycling efficient utilization of the resin are realized, and the comprehensive production cost is relatively low; and a resin switching production mode is combined.

Description

technical field [0001] The invention relates to the field of industrial production of silk reeling, and more precisely relates to a method for recovering sericin. Background technique [0002] Silk is composed of two parts, the outer part made of silk collagen is called sericin; the inner part made of glial protein is called silk fibroin. Sericin protects and binds the silk fibroin wrapped in it. The main reason why silk is favored by people all over the world is the role of silk fibroin in fabrics, but the properties of sericin have not been fully utilized. Sericin protein is a precious resource. The sericin protein dissolved in the silk production process is lost with the discharge of production wastewater, and becomes the main pollutant in the wastewater of silk reeling production. After detection and analysis, it is found that the protein concentration in the wastewater of silk reeling is between 0.4 and 3.8mg / mL time, it will have adverse effects on the water environm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/42C07K14/78C07K1/18
CPCC02F1/42C07K14/78
Inventor 李晴李晨邢百汇吴旻严豪杰李泉雨
Owner ZHEJIANG UNIV OF TECH
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