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A cyclodextrin-based-cu for the treatment of PPCPS in reclaimed water 2 oPreparation method of blend film

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, excellent separation and recovery, and improving efficiency

Active Publication Date: 2020-02-21
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 pppcps in reclaimed water 2 The preparation method of O blend membrane: 1) take 5mol / L NaOH solution 30mL and 1mol / L CuSO 4 Add 10mL of the solution into the reaction kettle, stir evenly with a magnetic force, add 20mL of 1.5mol / L glucose solution to the above mixed solution, place the reaction kettle in a thermostat for high temperature reaction, control the temperature of the thermostat at 330°C, and put the The reaction kettle was cooled to room temperature, filtered with suction, washed 5 times with absolute ethanol, and finally dried in a vacuum oven (vacuum degree of 4800pa, drying temperature of 60°C, drying time of 5h) to obtain oxynitride The particle size of the copper powder is 200nm-300nm. 2) Take 5g of cuprous oxide powder and put it into a three-necked flask, add 5mL of toluene and stir at low temperature until the solution becomes a paste, then add 14mL of vinyltriethoxysilane dropwise, heat up to 130°C, reflu...

Embodiment 2

[0027] A cyclodextrin-based-Cu for the treatment of pppcps in reclaimed water 2 O blend membrane, the preparation method is: 1) take 5mol / L NaOH solution 30mL and 1mol / L CuSO 4 Add 10mL of the solution into the reaction kettle, stir evenly with a magnetic force, add 20mL of 1.5mol / L glucose solution to the above mixed solution, place the reaction kettle in a thermostat for high temperature reaction, control the temperature of the thermostat at 480°C, and put the The reactor was cooled to room temperature, filtered with suction, and the filter residue was washed three times with absolute ethanol, and finally dried in a vacuum oven (conditions were the same as in Example 1), and the obtained cuprous oxide powder had a particle size of about 50nm. 2) Take 5g of cuprous oxide powder and put it into a three-necked flask, add 5mL of toluene and stir at low temperature until the solution becomes a paste, then add 18mL of vinyltriethoxysilane dropwise, and heat up to 140°C, reflux for...

Embodiment 3

[0030] A cyclodextrin-based-Cu for the treatment of pppcps in reclaimed water 2 O blend membrane, the preparation method is: 1) take 5mol / L NaOH solution 30mL and 1mol / L CuSO 4 Add 10mL of the solution into the reaction kettle, stir evenly with a magnetic force, add 20mL of 1.5mol / L glucose solution to the above mixed solution, place the reaction kettle in a thermostat for high temperature reaction, control the temperature of the thermostat at 280°C, and put the The reaction kettle was cooled to room temperature, suction filtered, 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 step 1 of Example 1), and the obtained cuprous oxide powder had a particle size of about 100nm . 2) Take 10g of cuprous oxide powder and put it into a three-necked flask, add 10mL of toluene and stir at low temperature until the solution becomes a paste, then add 15mL of aminopropyltriethoxysilane (KH550)...

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PUM

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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 based-Cu for the treatment of ppcps 2 The invention relates to an O blend film and a preparation method thereof, specifically belonging to the field of environmental pollution control. Background technique [0002] Pharmaceuticals and personal care products (PPCPs) are a new class of micro-pollutants with the characteristics of environmental stability, refractory 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, the development of PPCPs removal technology in reclaimed water has important theoretical and practical significance for the sustainable developm...

Claims

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Application Information

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Patent Type & Authority Patents(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