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Amino acid surface-modified composite magnetic micro-nano particles and its preparation method and use
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A micro-nano particle, composite magnetic technology, applied in the intersection of micro-nano materials and environmental engineering
Inactive Publication Date: 2016-02-17
XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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Problems solved by technology
In particular, it solves the problem of the treatment of polymer-containing wastewater in the existing oilfield tertiary production
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Embodiment 1
[0063] Example 1. Synthesis of phenylalanine-modified ferric oxide micro-nanoparticles
[0064] Add 100mL of distilled water, 1.988g of ferrous chloride tetrahydrate and 5.406g of ferric chloride hexahydrate into a 250mL three-neck round-bottomed flask protected by nitrogen gas in sequence, and after dissolving under electric stirring at room temperature, add 60mL of 2M ammonia solution dropwise, dropwise The acceleration rate is 0.5mL / min. After the dropwise addition is completed, continue to stir for 30 minutes, then rapidly raise the temperature to 75°C, and react for 2 hours;
[0065] Subsequently, 1.652 g of phenylalanine was added, and the reaction was continued at a temperature of 75° C. for 3 h to obtain a suspension of phenylalanine-modified ferric oxide micro-nano particles.
Embodiment 2
[0066] Example 2. Synthesis of tyrosine-modified ferric oxide micro-nanoparticles
[0067] Add 100mL of distilled water, 1.988g of ferrous chloride tetrahydrate and 5.406g of ferric chloride hexahydrate into a 250mL three-neck round-bottomed flask protected by nitrogen gas in turn, stir to dissolve, and add 60mL of 2M sodium hydroxide aqueous solution dropwise at room temperature. The dropping rate was 1mL / min. After the dropping was completed, the stirring was continued for 30 minutes, and then the temperature was rapidly raised to 80°C, and the reaction was carried out for 1.5 hours;
[0068] Then, 5.436 g of tyrosine was added, and the reaction was continued at 80° C. for 1 hour to obtain a suspension of tyrosine-modified iron ferric oxide micro-nano particles.
Embodiment 3
[0069] Example 3. Synthesis of arginine-modified ferric oxide micro-nanoparticles
[0070] Add 100mL of distilled water, 1.988g of ferrous chloride tetrahydrate, and 5.406g of ferric chloride hexahydrate into a 250mL three-neck round bottom flask protected by nitrogen gas, and dissolve them by electric stirring at room temperature, and then dissolve them at a rate of 1.5mL / min. Add 60mL of 2M sodium hydroxide aqueous solution dropwise at the rate of dropping. After the dropwise addition, continue to stir for 30min, then rapidly raise the temperature to 85°C, and react for 1h;
[0071] Then 5.226 g of arginine was added, and the reaction was continued at a temperature of 85° C. for 30 minutes to obtain a suspension of arginine-modified iron ferric oxide micro-nano particles.
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Abstract
The invention relates to a composite magnetic micro-nano particle decorated on the surface of amino acid and a preparation method and application thereof. Amino acids act on the surface of the magnetic micro-nano particle through carboxyl or sulfydryl, a co-precipitation one-pot reaction method is used for preparing the composite magnetic particle, a raw material is low in price and easy to obtain, the environment compatibility is good, preparation is convenient, the oil-water separation technological process is short, industrial implementation is easy, and thus the treatment cost of wastewater in an existing oilfield is greatly lowered. According to the characteristic that a large amount of partially hydrolyzed polyacrylamide is included in tertiary oil recovery wastewater, the amino acids are selected for conducting surface modification on the magnetic micro-nano particle, the oil removal rate of the tertiary oil recovery wastewater can reach up to 90%, the composite magnetic micro-nano particle is a very ideal environment-friendly oil-water separation material, good social benefits and economic benefits are achieved, it is of great practical significance to saving resources and protecting the environment, and particularly the tertiary oil recovery wastewater treatment problem in the existing oilfield is solved.
Description
technical field [0001] The invention belongs to the cross-technical field of micro-nano materials and environmental engineering, and relates to an amino acid-modified composite magnetic micro-nano particle and a preparation method thereof, and its application in the treatment of oil production sewage, in particular to the treatment of three-mining poly-containing sewage Applications. Background technique [0002] From the perspective of development history, oil exploitation has roughly gone through three development stages: primary oil recovery, secondary oil recovery and tertiary oil recovery. Primary oil recovery mainly relies on the energy of the original oil layer to press the crude oil from the oil layer to the wellbore and then to the ground. Generally, only 5-13% of the crude oil geological reserves can be recovered. Secondary oil recovery is to inject water into the primary oil recovery oil well to replenish the energy of the oil layer, and generally 20-25% of the g...
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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/40C02F1/48
Inventor 干为朱雪锋李守柱杨艳艳牛园园
Owner XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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