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Preparation method of cyclodextrin-based Cu2O blend membrane for treating ppcps (Pharmaceutical and Personal Care Products) in reclaimed water

A cyclodextrin-based, cyclodextrin-based technology, applied in the field of environmental pollution control, can solve the problems of high process energy consumption, achieve the effects of inhibiting agglomeration, avoiding difficulty in recycling, and excellent separation and recovery

Active Publication Date: 2019-05-17
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Advanced Oxidation Technology (AOPs) realizes the complete degradation of PPCPs or improves its biochemical properties through the strong oxidation of free radicals (OH·mainly), among which photocatalyst technology is widely used. The agglomeration phenomenon of ultrafine photocatalysts in solution is an important factor affecting the photocatalytic effect
Membrane filtration technology realizes the interception and removal of micro-pollutants through the molecular interception of the membrane, and the removal rate can be as high as 99%, but the energy consumption of the process is very high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A cyclodextrin-based Cu for the treatment of ppcps in reclaimed water 2 Preparation method of O blend film: 1) Take 30 mL of 5 mol / L NaOH solution and 1 mol / L CuSO 4 10 mL of the solution was added to the reaction kettle. After magnetic stirring was uniform, 20 mL of 1.5 mol / L glucose solution was added to the above mixed solution. The reaction kettle was cooled to room temperature, filtered with suction, washed with anhydrous ethanol for 5 times, and finally dried in a vacuum drying oven (the vacuum degree was 4800pa, the drying temperature was 60°C, and the drying time was 5h) to obtain the oxymethylene oxide. The particle size of copper powder is 200nm-300nm. 2) Take 5 g of cuprous oxide powder into a three-necked flask, add 5 mL of toluene and stir at low temperature until the solution becomes a paste, then dropwise add 14 mL of vinyltriethoxysilane, and heat up to 130 ° C, reflux for 4 hours, and then cool to a At room temperature, 8.0g of β-cyclodextrin cross-li...

Embodiment 2

[0027] A cyclodextrin-based Cu for the treatment of ppcps in reclaimed water 2 O blend film, the preparation method is as follows: 1) Take 30 mL of 5 mol / L NaOH solution and 1 mol / L CuSO 4 10 mL of the solution was added to the reaction kettle, and after magnetic stirring was uniform, 20 mL of 1.5 mol / L glucose solution was added to the above mixed solution, and the reaction kettle was placed in an incubator for high-temperature reaction, and the temperature of the incubator was controlled to be 480 ° C. The reaction kettle was cooled to room temperature, suction filtered, and the filter residue was washed three times with absolute ethanol, and finally placed in a vacuum drying oven to dry (conditions were the same as in Example 1) to obtain a cuprous oxide powder with a particle size of about 50 nm. 2) Take 5 g of cuprous oxide powder into a three-necked flask, add 5 mL of toluene and stir at low temperature until the solution becomes a paste, then dropwise add 18 mL of vinyl...

Embodiment 3

[0030] A cyclodextrin-based Cu for the treatment of ppcps in reclaimed water 2 O blend film, the preparation method is as follows: 1) Take 30 mL of 5 mol / L NaOH solution and 1 mol / L CuSO 4 10 mL of the solution was added to the reaction kettle. After magnetic stirring, 20 mL of 1.5 mol / L glucose solution was added to the above mixed solution. The reaction kettle was cooled to room temperature, filtered with suction, and the filter residue was washed 4 times with absolute ethanol, and finally placed in a vacuum drying oven to dry (conditions were the same as in Example 1, step 1), and the particle size of the obtained cuprous oxide powder was about 100 nm. . 2) Add 10 g of cuprous oxide powder into a three-necked flask, add 10 mL of toluene and stir at low temperature until the solution becomes a paste, then dropwise add 15 mL of aminopropyltriethoxysilane (KH550), and heat up to 135 ° C, reflux After 4 hours, it was cooled to room temperature, and then 16.0 g of β-cyclodextr...

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Abstract

The invention discloses a preparation method of a cyclodextrin-based Cu2O blend membrane for treating ppcps (Pharmaceutical and Personal Care Products) in reclaimed water, and belongs to the field ofenvironment pollution control. The preparation method specifically comprises the following steps: (1) preparing superfine Cu2O powder; (2) preparing a superfine cyclodextrin-based Cu2O composite material through a coupling agent; (3) preparing the cyclodextrin-based Cu2O blend membrane through a blending method. According to the preparation method disclosed by the invention, efficient removing ofthe PPCPs can be realized through adsorption, photocatalytic degradation and membrane interception, and meanwhile, excellent separation and recycling of an adsorbent can be realized through fixed action of a membrane; meanwhile, the photocatalytic efficiency of a photocatalyst is greatly increased; the using period of the membrane can be increased, so that economic loss is reduced.

Description

technical field [0001] The present invention relates to a cyclodextrin-Cu used for treating ppcps 2 The O blended membrane and the preparation method thereof specifically belong to the field of environmental pollution control. Background technique [0002] Pharmaceuticals and personal care products (PPCPs) are a new type of micro-pollutants with the characteristics of environmental stability, refractory degradation and bioaccumulation. Long-term exposure will cause irreversible potential harm to human health and the ecological environment. At present, such pollutants have been widely detected in surface water, groundwater, drinking water and reclaimed water (the concentration is generally at the level of 10ng / L-500mg / L). More than 80% of PPCPs pollution in urban water systems comes from reclaimed water. Therefore, it is of great theoretical and practical significance to carry out the removal technology of PPCPs in recycled water for the sustainable development of urban sewa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/28B01J20/30B01J31/28C02F1/28C02F1/30C02F1/72
Inventor 张军汪慧静田禹尹琳琳左薇
Owner HARBIN INST OF TECH
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