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Method for preparing magnetic multi-effect adsorbent by dry method of enzymatic hydrolysis residue

An enzymatic hydrolysis residue and adsorbent technology, applied in the field of materials, can solve the problems of high cost and complicated operation, and achieve the effects of excellent adsorption effect, simple preparation method, and cheap and easy-to-obtain raw materials.

Active Publication Date: 2022-07-01
QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the complicated operation and high cost of the magnetic adsorbent preparation method in the prior art, the present invention provides a method for preparing a magnetic multi-effect adsorbent using enzymolysis residue as a raw material

Method used

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  • Method for preparing magnetic multi-effect adsorbent by dry method of enzymatic hydrolysis residue
  • Method for preparing magnetic multi-effect adsorbent by dry method of enzymatic hydrolysis residue
  • Method for preparing magnetic multi-effect adsorbent by dry method of enzymatic hydrolysis residue

Examples

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Effect test

Embodiment 1

[0028] The method and application of the magnetic multi-effect adsorbent prepared by the dry method of the enzymatic hydrolysis residue, the specific steps are as follows:

[0029] Step 1: The corncob enzymatic hydrolysis residue with a lignin content of 86% is centrifuged and washed with distilled water until neutral, dried, and stored in a dry environment at room temperature for later use.

[0030] Step 2: Take the above-obtained enzymatic hydrolysis residue and Co 3 O 4 The nanoparticles were uniformly mixed at a mass ratio of 5:1, and preheated at a temperature of 100°C for 3 hours to obtain the pretreated material.

[0031] Step 3: Transfer the processed material to a ball mill, place the ball mill in a planetary ball mill, and perform mechanical ball milling for 5 hours at a speed of 80 revolutions / min and 300 revolutions / min.

[0032] Step 4: Open the treated ball-milling jar, take out the material in the jar, and sieve and separate the ball-milled zirconium beads to ...

Embodiment 2

[0035] Example 2 (comparative example, without adding magnetic nanoparticles):

[0036] The method and application for preparing multi-effect adsorbent by using enzymolysis residue dry method, the specific steps are as follows:

[0037] Step 1: The corncob enzymatic hydrolysis residue with a lignin content of 89% is centrifuged and washed with distilled water until neutral, dried, and stored in a dry environment at room temperature for later use.

[0038] Step 2: adding the enzymatic hydrolysis residue obtained above into a ball mill, and preheating for 3 hours at a temperature of 100° C. to obtain a pretreated material.

[0039] Step 3: Transfer the processed material to a ball mill, place the ball mill in a planetary ball mill, and perform mechanical ball milling for 5 hours at a speed of 80 revolutions / min and 300 revolutions / min.

[0040] Step 4: Open the treated ball-milling jar, take out the material in the jar, and sieve and separate the ball-milled zirconium beads to ...

Embodiment 3

[0044] The method and application of the magnetic multi-effect adsorbent prepared by the dry method of the enzymatic hydrolysis residue, the specific steps are as follows:

[0045] Step 1: The enzymatic hydrolysis residue of wheat straw with a lignin content of 81% is centrifuged and washed with distilled water until neutral, dried, and stored in a dry environment at room temperature for later use.

[0046] Step 2: Mix the above-obtained enzymatic hydrolysis residue and NiO nanoparticles uniformly at a mass ratio of 1:4, and preheat at 80° C. for 5 hours to obtain a pretreated material.

[0047] Step 3: Add the pretreated material to the ball mill, then place the ball mill in the planetary ball mill, and perform mechanical ball milling for 4 hours at a speed of 60 revolutions / min and 200 revolutions / min;

[0048] Step 4: Open the treated ball-milling jar, take out the material in the jar, and sieve and separate the ball-milled zirconium beads to obtain the magnetic multi-effec...

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Abstract

The invention provides a method of utilizing enzymolysis residue as raw material to prepare a magnetic multi-effect adsorbent, comprising the following steps: washing the enzymolysis residue raw material to neutrality and drying; then with magnetic nanoparticles in a weight ratio of 5: Mix well at 1~1:5, preheat at 80~120°C for 1~5 hours; transfer to a ball milling jar for mechanical ball milling at room temperature for 1~5 hours. Finally, the treated ball-milling tank is opened, and the material in the tank is taken out and sieved to separate the ball-milled zirconium beads to obtain a magnetic multi-effect adsorbent prepared from the enzymatic hydrolysis residue. The magnetic multi-effect adsorbent can be applied to adsorb pollutants in wastewater, and the pollutants are anionic dyes, cationic dyes and heavy metal ions. The preparation method is simple to operate, not only low in cost, easy to collect, and high in yield, but also the prepared magnetic adsorbent realizes effective adsorption of anionic fuel, cationic dye and heavy metal ions, and has important practical application value and broad market. prospect.

Description

technical field [0001] The invention belongs to the field of materials, relates to the high-value reuse of lignocellulosic biomass, and in particular relates to a method for preparing a magnetic adsorbent by using enzymatic hydrolysis residue as a raw material and the application of the magnetic adsorbent. Background technique [0002] With the rapid development of industry, the challenges of pollution are increasing, and the increasingly serious water pollution has become a prominent problem that threatens human life and social and economic development. Since industrial wastewater contains organic dyes and heavy metal ions, these pollutants are difficult to self-degrade in the natural environment. If they are not treated, they will inevitably pose potential threats to the environment and human health (Ecological indicator, 2015, 48, 282-291; Science of the total environment, 2015, 1591-103). Considering the removal efficiency, cost and ease of operation, wastewater adsorbe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/30B01J20/24B01J20/28C02F1/28C02F1/48C02F101/22C02F101/30
CPCB01J20/24B01J20/22B01J20/08B01J20/06B01J20/28009B01J20/28019C02F1/28C02F1/48C02F2101/22C02F2101/308
Inventor 李滨徐蕊刘超于光吴美燕崔球
Owner QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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