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Preparation method of modified diatomite adsorbent

A diatomite and adsorbent technology, applied in the field of modified diatomite adsorbents, can solve the problems of easy blockage by oil, easy damage to the micro-nano structure, limited use effect, etc., and achieves good hydrophobicity and lipophilicity, adsorption Strong performance and easy oil suction operation

Inactive Publication Date: 2021-04-06
XINYI XIYI ADVANCED MATERIALS RES INST OF IND TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, although most of the oil-removing materials can filter or absorb the oil in oily wastewater, they are still easily blocked by oil and the number of uses and the effect of use are limited; seek large adsorption capacity, non-toxic, no residue, and strong regeneration ability High-efficiency adsorbents that can be recycled many times have become a current research hotspot.
[0004] Most of the adsorbents currently on the market have the following problems: (1) The micro-nano structure on the surface of the final product is easily damaged in harsh environments, making it unrecyclable in harsh environments; (2) Sponge and cotton fabrics are used as raw materials low strength and difficult to recycle, (3) most organic modifiers contain toxic fluorine-based phases

Method used

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  • Preparation method of modified diatomite adsorbent
  • Preparation method of modified diatomite adsorbent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Based on 100 parts by weight, weigh 45 parts of diatomaceous earth powder, 1 part of isobutylene maleic anhydride copolymer (INSBAM-04), 0.5 parts of carboxymethyl cellulose, 53 parts of deionized water, and another volume of 1 vol of slurry % Triethanolamine Lauryl Sulfate (TLS) as foaming agent. Stir for 5 minutes to mix the raw materials evenly. After injecting the slurry into the mold, put the module into a 50°C oven and heat it for 2 hours to make it gel and form. After demoulding, the embryo body was dried at room temperature for 48 hours, and then the embryo body was dried in an oven at 140° C. for 12 hours. Put the dried embryo body in a high-temperature sintering furnace at 1200°C with a heating rate of 4°C / min, keep it warm for 2 hours, and obtain porous diatomite ceramics after natural cooling; The anhydride copolymer (ISOBAM-104) was pressure-impregnated in a vacuum tank for 15 hours, with a concentration of 100mmol / L. After the impregnation, the sample was...

Embodiment 2

[0026] Based on 100 parts by weight, weigh 55 parts of diatomite powder, 4 parts of isobutylene maleic anhydride copolymer (INSBAM-04), 0.5 parts of carboxymethyl cellulose, 44 parts of deionized water, and measure the volume of slurry 1vol % Triethanolamine Lauryl Sulfate (TLS) as foaming agent. Stir for 5 minutes to mix the raw materials evenly. After injecting the slurry into the mold, put the module into a 50°C oven and heat it for 2 hours to make it gel and form. After demoulding, the embryo body was dried at room temperature for 48 hours, and then the embryo body was dried in an oven at 140° C. for 12 hours. Put the dried embryo body in a high-temperature sintering furnace at 1300°C with a heating rate of 4°C / min, keep it warm for 2 hours, and obtain porous diatomite ceramics after natural cooling; The anhydride copolymer (ISOBAM-104) was pressure-impregnated in a vacuum tank for 18 hours, with a concentration of 180mmol / L. After the impregnation, the sample was dried i...

Embodiment 3

[0029] Based on 100 parts by weight, weigh 40 parts of diatomite powder, 1 part of isobutylene maleic anhydride copolymer (INSBAM-04), 0.5 parts of carboxymethyl cellulose, 58 parts of deionized water, and take another volume of 1 vol of slurry % Triethanolamine Lauryl Sulfate (TLS) as foaming agent. Stir for 5 minutes to mix the raw materials evenly. After injecting the slurry into the mold, put the module into a 50°C oven and heat it for 2 hours to make it gel and form. After demoulding, the embryo body was dried at room temperature for 48 hours, and then the embryo body was dried in an oven at 110° C. for 12 hours. Put the dried embryo body in a high-temperature sintering furnace at 1250°C with a heating rate of 4°C / min, keep it warm for 2 hours, and obtain porous diatomite ceramics after natural cooling; The anhydride copolymer (ISOBAM-104) was pressure-impregnated in a vacuum tank for 12 hours, with a concentration of 240mmol / L. After the impregnation, the sample was dri...

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Abstract

The invention relates to a preparation method of a modified diatomite adsorbent. A non-toxic isobutylene-maleic anhydride copolymer is adopted to modify porous diatomite ceramic, and the adsorbent which is excellent in mechanical property, high in porosity, high in strength, good in oil-water selectivity, excellent in oil product adsorption performance, high in efficiency and capable of being repeatedly used is prepared.

Description

technical field [0001] The invention belongs to the field of adsorbents, in particular to a modified diatomite adsorbent. Background technique [0002] With the rapid development of social economy, oil spills and output of industrial oily wastewater are increasing rapidly. This problem poses a huge threat to the ecosystem and human health for offshore oil exploration, production and transportation. The main methods to deal with oil spill pollution are chemical method, physical method and biological method. However, the use of chemical methods is likely to cause harm to the ecological environment, such as in-situ burning and chemical methods, and the use of microbial degradation may disturb the original biota in the oil spill area and destroy the balance of the original ecosystem. [0003] The adsorption method has the advantages of simple operation, cheap and easy-to-obtain adsorbent, excellent removal effect, and no secondary pollution. However, although most of the oil-r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/14B01J20/26B01J20/28B01J20/30C02F1/28C02F1/40
CPCB01J20/14B01J20/264B01J20/28011B01J20/28057C02F1/281C02F1/40
Inventor 张乐罗泽康健甄方正张永丽邱凡陈浩
Owner XINYI XIYI ADVANCED MATERIALS RES INST OF IND TECH CO LTD