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Method for preparing magnetic multi-effect adsorbent by using enzymolysis residue dry process

A technology of enzymatic hydrolysis residue and adsorbent, applied in the field of materials, can solve the problems of high cost and complicated operation

Active Publication Date: 2021-09-10
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 using enzymolysis residue dry process
  • Method for preparing magnetic multi-effect adsorbent by using enzymolysis residue dry process
  • Method for preparing magnetic multi-effect adsorbent by using enzymolysis residue dry process

Examples

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Effect test

Embodiment 1

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

[0029] Step 1: The corncob enzymolysis 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 enzymolysis residue and Co 3 o 4 The nanoparticles were uniformly mixed at a mass ratio of 5:1, and preheated at 100° C. for 3 hours to obtain a pretreated material.

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

[0032] Step 4: Open the treated ball mill tank, take out the material in the tank and sieve to separate the ball milled zirconium beads, and obtain the magnetic multi-effect adsorbe...

Embodiment 2

[0035] Embodiment 2 (comparative example, do not add magnetic nanoparticles):

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

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

[0038] Step 2: Take the enzymolysis residue obtained above and put it into a ball mill tank, and preheat it at 100° C. for 3 hours to obtain the pretreated material.

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

[0040] Step 4: Open the treated ball mill tank, take out the material in the tank and sieve to separate the ball milled zirconium beads, and obtain the ...

Embodiment 3

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

[0045] Step 1: The residue of enzymatic hydrolysis 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 obtained enzymolysis residue with NiO nanoparticles at a mass ratio of 1:4, and preheat at 80°C for 5 hours to obtain the pretreated material.

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

[0048] Step 4: Open the treated ball mill tank, take out the material in the tank and sieve to separate the ball milled zirconium beads, and obtain the magnetic multi-effect adsorbent ...

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Abstract

The invention provides a method for preparing a magnetic multi-effect adsorbent by using enzymolysis residues as s raw material. The method comprises the following steps: washing the enzymolysis residue raw material to be neutral, and drying; then uniformly mixing the dried raw material with magnetic nano-particles according to the weight ratio of (5: 1)-(1: 5), and preheating at 80-120 DEG C for 1-5 hours; transferring into a ball milling tank, and carrying out mechanical ball milling for 1-5 hours at room temperature; and finally, opening the treated ball milling tank, taking out materials in the tank, sieving, separating and ball-milling zirconium beads, thereby obtaining the magnetic multi-effect adsorbent prepared from the enzymolysis residues. The magnetic multi-effect adsorbent can be used for adsorbing pollutants in wastewater, and the pollutants are anionic dyes, cationic dyes and heavy metal ions. The preparation method is simple to operate, low in cost, easy to collect and high in yield, and the prepared magnetic adsorbent realizes effective adsorption of anion fuel, cationic dye and heavy metal ions, and has important practical application value and wide market prospect.

Description

technical field [0001] The invention belongs to the field of materials, and relates to the high-value reuse of lignocellulosic biomass, in particular to a method for preparing a magnetic adsorbent by using enzymolysis residue as a raw material and the application of the magnetic adsorbent. Background technique [0002] With the rapid development of industry, pollution challenges are also increasing. 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, and these pollutants are difficult to self-degrade in the natural environment, if they are not treated, they will inevitably pose a potential threat 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 adsorbent is an effective...

Claims

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Application Information

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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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