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Oil content adsorbent and method for recovering oil content

A technology of adsorption materials and recovery methods, applied in chemical instruments and methods, adsorption water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of cost increase, deterioration of oil adsorption material utilization efficiency, and utilization of oil adsorption materials Poor efficiency and other issues to achieve low-cost effects

Inactive Publication Date: 2011-09-21
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this method, since low-molecular-weight compounds such as stearic acid or a coupling agent are used for surface modification of the magnetic body, there is a problem that these low-molecular-weight compounds may contaminate water on the contrary.
[0008] In addition, in the above-mentioned patent documents 1 to 3, the oil adsorbents are discarded directly after absorbing the oil, and the utilization efficiency of the above-mentioned oil adsorbents is very poor.
Moreover, the oil adsorbents for use are discarded if they do not meet the specifications during the manufacturing process. From this point of view, the utilization efficiency of the above oil adsorbents will also deteriorate.
As a result, there is a problem that a relatively large amount of oil adsorbent is required to adsorb and remove the necessary oil, and the cost related to the oil removal operation inevitably increases.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] Manufacture of oil absorbing materials

[0067] With the ratio of 70 / 30, the styrene of the molecular structure A group and the acrylonitrile of the molecular structure B group are randomly copolymerized to obtain a polymer, and 6 parts by weight of the polymer are dissolved in 300ml of tetrahydrofuran to make a solution, and the In this solution, the average particle diameter dispersed in this solution is 40 parts by weight of spherical iron ferric oxide magnetite particles of 800nm ​​(the specific surface area is 5.7m 2 / g), to obtain the composition. This composition was sprayed using a small spray dryer (Shibata Scientific Co., Ltd., B-290 type) to produce a spherical resin composite with an average secondary particle diameter of about 20 μm, that is, oil adsorption particles. As a result of SEM observation, it was a porous body in which the magnetic powder was aggregated. When 1 g of the oil-adsorbing particles thus obtained was mixed with 1 L of water, they wer...

Embodiment 2

[0073] Oil content adsorption particles were produced in the same manner as in Example 1 except that the ratio of styrene and acrylonitrile was changed to 95 / 5. Good water dispersibility. When the amount of oil adsorption was measured in the same manner, 499.9 μL or more of oil was adsorbed, and it was confirmed that the entire amount of oil was removed by hexane.

Embodiment 3

[0075] Oil content adsorption particles were produced in the same manner as in Example 1 except that the ratio of styrene and acrylonitrile was changed to 40 / 60. Good water dispersibility. When the amount of oil adsorption was measured in the same manner, 499.9 μL or more of oil was adsorbed, and it was confirmed that the entire amount of oil was removed by hexane.

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PUM

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Abstract

Disclosed is an oil content adsorbent which comprises either an inorganic particle and / or a metal particle forming the core, and a polymer covering the core. The polymer is a copolymer composed of at least one substance selected from the group of molecular structure A consisting of styrene, butadiene, isoprene, ethylene and propylene, and at least one substance selected from the group of molecular structure B consisting of acrylic acid, methacrylic acid, acrylonitrile, vinylpyridine, vinyl alcohol, maleic acid anhydride and maleic acid.

Description

technical field [0001] The present invention relates to an oil adsorbent material for recovering oil from water. Background technique [0002] Recently, due to the development of industry and the increase of population, efficient use of water resources is required. Therefore, the reuse of waste water such as industrial waste water becomes very important. In order to achieve its reuse, it is necessary to perform water purification, that is, to separate other substances from water. [0003] Various methods are known for separating other substances from liquids, and examples thereof include membrane separation, centrifugation, activated carbon adsorption, ozone treatment, coagulation, and removal of suspended matter using a predetermined adsorbent. In this way, chemical substances such as phosphorus and nitrogen contained in water that have a great impact on the environment can be removed, and oils, clay, etc. dispersed in water can be removed. [0004] Among them, membrane ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28B01J20/26B22F1/02
CPCC02F2101/32C02F1/285B01J20/327C02F1/288B01J20/28009C02F1/488B01J20/3204B01J20/3276
Inventor 深谷太郎藤枝新悦村井伸次铃木昭子辻秀之河野龙兴足利伸行
Owner KK TOSHIBA