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A method and equipment for recovering protein from starch crop processing wastewater

A technology for processing wastewater and starch, applied in the field of protein recovery, can solve problems such as high cost and difficulty in maintaining biological activity, and achieve the effects of low cost, high degree of automation, simple process and supporting equipment

Active Publication Date: 2021-08-03
INST OF AGRO FOOD SCI & TECH CHINESE ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a method and equipment for recovering protein from starch crop processing wastewater, which overcomes the difficulties of maintaining biological activity and high cost in the process of protein recovery in starch crop wastewater in the prior art by charging the starch crop protein and then collecting the crop protein. question

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  • A method and equipment for recovering protein from starch crop processing wastewater
  • A method and equipment for recovering protein from starch crop processing wastewater
  • A method and equipment for recovering protein from starch crop processing wastewater

Examples

Experimental program
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Embodiment 1

[0044] This embodiment provides a method of recovering proteins from starch crop processing wastewater, including:

[0045] (1) Disperse the silica particles in the dodecyl dimethyl betaine solution, pH is adjusted to 4.9, stirring, centrifugal and freeze dry; silica particles and dodecyl dimethylakyl The ratio is 2: 1;

[0046] (2) The modified silica nanoparticles obtained from the starch crop processing wastewater, the gas generated by the gas generated foam, the silica nanoparticle concentration is 500 mg / L, the flow rate of the vent gas is 250 mL / MIN;

[0047] (3) The foam ultrasonic defoaming, spray drying, re-ultrafine pulverization, and ultra-fine pulverized protein crude extract powder particle diameter are 100 nm.

[0048] (4) Put the ultrafine protein crude extract powder by frictional charging protein with positive electricity, starch and other ingredients with negative electricity, and the recovery of proteins is performed by charge difference.

[0049] Further, s...

Embodiment 2

[0051] figure 1 For the present embodiment, a device for recovering proteins from a starch crop, for performing the method in Example 1, such as figure 1 As shown, starch cropper extract equipment includes:

[0052] Bubble separation unit, spray drying and pulverization unit and pneumatic electrostatic friction unit;

[0053] The bubble separation unit includes a starch crop processing wastewater storage tank 5, a foam separator 6, and a foam collector 7, and a starch crop processing wastewater storage tank 5 is provided with a feed port 4 and a discharge opening 10 through the transfer pump 3. The machining wastewater is transported to the foam separator 6 by a pipeline; the foam separator 6 is composed of the upper portion of the elliptical sphere and the lower part of the cylinder, and the intake end connects the air compressor 1, the gas cylinder 8, rotor. The flow meter 2 and the air wetting bottle 9 are used to control the intake velocity, and the generated foam is delivere...

Embodiment 3

[0060] This embodiment provides a method of recovering protein from starch crop processing wastewater, combined figure 1 The specific steps are as follows:

[0061] (1) In the bubble separation unit, the potato processing wastewater containing the modified silica nanoparticles in the starch crop processing wastewater storage tank 5 enters the foam separator 6 through the transfer pump 3, wherein the modified silica nanoparticles and The concentration is 500 mg / L. The air compressor 1 gas generating gas is sequentially passed through the gas cylinder 8, the air wet bottle 9, and the rotor flow rate 2 controls the flow rate of 250 ml / min, and the potato processing wastewater produced under the foam separator 6 in the gas action foam, foam through continuous Expansion and shrink flow to spray drying and pulverization units.

[0062] Among them, the preparation method of modified silica nanoparticles is: 2.2 mol / L silica particles are dispersed in a 1 mol / l dodecyl dimethyl be...

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Abstract

The invention provides a method and equipment for recovering protein from starch crop processing wastewater. The method includes: (1) adding modified silicon dioxide nanoparticles to the starch crop processing wastewater, feeding gas to generate foam, and drying the foam Prepare into powder to obtain protein crude extract powder, modified silica nanoparticles are obtained by modifying silica nanoparticles through dodecyl dimethyl betaine; (2) triboelectrically charge the protein crude extract powder The treatment makes the protein in it positively charged, and the other components are uncharged or negatively charged, and the protein is recovered through the difference in charge. In the present invention, starch crop processing waste water is made into foam by modified silicon dioxide, and then powder is made, and each component in the powder is charged with different charges by means of frictional electrification, and then collected, and the protein recovery rate reaches more than 84%. The protein content in the powder can reach 91.2%, while effectively maintaining its solubility, emulsification and bioactive components.

Description

Technical field [0001] The present invention relates to the field of wastewater treatment, and more particularly to methods and apparatus for recovering proteins from starch crop processing wastewater. Background technique [0002] Starch crops are accompanied by producing a large amount of organic wastewater, such as potatoes, an average of 10 tons of wastewater, and a hydrocyclone (swirl station) on the potato starch processing line per producer. The protein content of 0.9% to 2.2.1% in juice water. Starch crop proteins have good bubbles and emulsified properties, with good application prospects in the food industry. Therefore, from improving the environment and achieves full use, the starch crop starch wastewater protein is extracted and utilized, and has become a problem that the starch starch production industry needs to be solved. [0003] At present, the extract protein in starch-starch processing wastewater mainly has concentrated, flocculation, precipitation, ion exchang...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07K1/14C07K1/24C02F1/58C02F101/38C02F103/32C02F101/34
CPCC02F1/58C02F2101/34C02F2101/38C02F2103/32C07K1/145C07K1/24
Inventor 刘伟胡宏海张泓张良刘倩楠樊月徐芬
Owner INST OF AGRO FOOD SCI & TECH CHINESE ACADEMY OF AGRI SCI
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