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Preparation method of magnetic particles without oil stains

A technology for magnetic particles and oil pollution, applied in separation methods, chemical instruments and methods, water pollutants, etc., to achieve the effects of reducing production costs, simple preparation methods, and increasing contact area

Inactive Publication Date: 2015-03-25
成都理想财富投资咨询有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the separation of activated carbon after absorbing oil pollution from wastewater has become another problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] In a kind of preparation method of the magnetic particle that removes greasy dirt, comprise the following steps:

[0020] a. Prepare ferric chloride, ferrous chloride and ammonia water respectively into aqueous solutions, and the mixing ratio of the aqueous solutions is 2:1:8 based on the molar fraction of the solute; then stir and mix under oil bath heating conditions, and the heating temperature is 30~40℃, stirring and mixing time is 5~7h, to obtain the mixed solution A;

[0021] b. Add oleic acid dropwise to the mixed solution A, and continue to stir for 3~7h to obtain a black solution A. After collecting the solid from the black solution A with an external magnetic field, wash the solid 2~3 times with absolute ethanol to remove excess Oleic acid, then wash the solid with deionized water, remove ethanol, until the pH of the cleaning solution=7, collect the solid with an external magnetic field, which is the black solid A;

[0022] c. Add the black solid A into ...

Embodiment 2

[0025] A preparation method for removing greasy magnetic particles, comprising the following steps:

[0026] a. Prepare ferric chloride, ferrous chloride and ammonia water respectively into aqueous solutions, and the mixing ratio of the aqueous solutions is 2:1:8 based on the molar fraction of the solute; then stir and mix under oil bath heating conditions, and the heating temperature is 40~50℃, stirring and mixing time is 5~10h, to obtain the mixed solution A;

[0027] b. Add oleic acid dropwise to the mixed solution A, and continue to stir for 7~10 hours to obtain a black solution A. After collecting the solid from the black solution A with an external magnetic field, wash the solid 2~3 times with absolute ethanol to remove excess Oleic acid, then wash the solid with deionized water, remove ethanol, until the pH of the cleaning solution=6.7, collect the solid with an external magnetic field, which is the black solid A;

[0028] c. Add the black solid A into sodium dode...

Embodiment 3

[0031] A preparation method for removing greasy magnetic particles, comprising the following steps:

[0032] a. Prepare ferric chloride, ferrous chloride and ammonia water respectively into aqueous solutions, and the mixing ratio of the aqueous solutions is 2:1:8 based on the molar fraction of the solute; then stir and mix under oil bath heating conditions, and the heating temperature is 35~45℃, stirring and mixing time is 6~8h, to obtain the mixed solution A;

[0033] b. Add oleic acid dropwise to the mixed solution A, and continue to stir for 5~8h to obtain a black solution A. After collecting the solid from the black solution A with an external magnetic field, wash the solid 2~3 times with absolute ethanol to remove excess Oleic acid, then wash the solid with deionized water, remove ethanol, until the pH of the cleaning solution=6.7~6.8, collect the solid with an external magnetic field, which is the black solid A;

[0034] c. Add the black solid A into sodium dodecyl...

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PUM

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Abstract

The invention provides a preparation method of magnetic particles without oil stains, belonging to the field of preparation of the magnetic particles and aiming at solving the problems that the oil stains in wastewater are difficult to separate and the oil stain separation cost is high. The preparation method of the magnetic particles without the oil stains, provided by the invention, comprises the following steps: preparing ferric chloride, ferrous chloride and ammonia water into water solutions respectively; mixing and stirring the materials, and dropwise adding oleic acid to obtain a black solution A; separating the black solution A by using an additional magnetic field to obtain a black solid A; adding the black solid A into sodium dodecyl sulfonate and carrying out ultrasonic treatment; separating to obtain a black solid B; and drying and grinding the black solid B to obtain the magnetic particles. The preparation method provided by the invention is simple to operate and is low in cost; and the prepared magnetic particles have good magnetic response and can be rapidly separated after adsorbing the oil stains.

Description

technical field [0001] The invention belongs to the field of preparation of magnetic particles, and in particular relates to a preparation method of magnetic particles for removing oil stains. Background technique [0002] As a traditional service industry in my country's tertiary industry, the catering industry has 4 million catering outlets across the country. With the increase of people's income level, the acceleration of the pace of life, and the renewal of consumption concepts, the catering industry has developed rapidly. With the rapid development of catering, the amount of catering wastewater generated is also huge. [0003] Catering waste water refers to the oily hogwash discharged from restaurants, hotels and other catering industries. Hogwash includes rice washing water, rice soup, leftovers, fishbone, bone residue, melon and vegetable peels, etc. According to statistics, the catering industry in more than 100 large and medium-sized cities in the country alone p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/30B01J20/28C02F1/28C02F1/40
CPCB01J20/223B01J20/28009B01J20/28026B01J20/3021B01J20/3085B01J20/3204B01J2220/46C02F1/285C02F1/40C02F2101/32
Inventor 武守阳
Owner 成都理想财富投资咨询有限公司