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Preparation method and application of purification, sterilization and self-cleaning integrated photosensitive adsorption column material

An adsorption column and self-cleaning technology, applied in chemical instruments and methods, botanical equipment and methods, applications, etc., can solve the problems that water cannot be drunk directly and the bactericidal effect is not obvious, and achieve good bactericidal ability, strong bactericidal effect, The effect of strong adsorption performance

Inactive Publication Date: 2013-01-02
赵思沉
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] In fact, we know that some household water purification products currently on the market are mainly based on activated carbon adsorption materials, which can purify micro-pollutants through filtration and adsorption, but the bactericidal effect is not obvious, and the treated water cannot be directly drunk
Some air purifiers are mainly based on a titanium dioxide photocatalyst, which can purify pollutant gases in the air and sterilize them through ultraviolet light irradiation, but this technology cannot be well applied to the purification and sterilization of tap water.

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  • Preparation method and application of purification, sterilization and self-cleaning integrated photosensitive adsorption column material
  • Preparation method and application of purification, sterilization and self-cleaning integrated photosensitive adsorption column material
  • Preparation method and application of purification, sterilization and self-cleaning integrated photosensitive adsorption column material

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Embodiment 1

[0030] A method for preparing a novel photosensitive high-efficiency adsorption column material with simple preparation process, low cost, multiple functions of purification-sterilization-self-cleaning, and integration, specifically comprising the following steps:

[0031] At room temperature, slowly drop 25ml of titanium tetrachloride liquid into 75ml of absolute ethanol stirred with a magnetic stirrer, and continue to stir for 24 hours after the dropwise addition to obtain a clear yellow-green solution; then, the cylindrical carbon gas Immerse the gel in the above solution for 30 minutes, take it out and place it in an oven at 90°C for 1 hour, repeat the above steps three times after cooling down; then heat up to 500 °C, calcined for 2 hours and then cooled to room temperature to obtain supported TiO 2 carbon airgel. Then carry out the loading of photosensitizer, firstly the loaded TiO prepared above 2 The carbon airgel was suspended in 100 mL of distilled water, and 1.2 g o...

Embodiment 2

[0035] The obtained photosensitive adsorption column material was used to purify methyl orange in simulated slightly polluted water.

[0036] In order to facilitate the intuitive investigation and testing of the adsorption and purification effect of the new adsorption material on micro-pollutants in water, artificially prepared 1 mg / L and 5 mg / L methyl orange solutions were used as simulated micro-polluted water in the experiment.

[0037] First, prepare a series of methyl orange solutions with a concentration of 0.1-10 mg / L, measure the absorbance at the maximum absorption wavelength of 465 nm with a UV-visible spectrophotometer, and draw a standard working curve.

[0038] Then, 50 mL of methyl orange solutions containing 1 mg / L and 5 mg / L flowed through adsorption columns of different lengths from above the funnel, and measured the absorbance of methyl orange simulated slightly polluted water before and after passing through the adsorption column. . The removal rate of micr...

Embodiment 3

[0045] After using the obtained photosensitive adsorption column material to purify methyl orange in simulated slightly polluted water, its bactericidal effect was investigated.

[0046] The test water adopts the last water in the tap water pipe. Because the total number of bacteria in the tap water is low, in order to better observe the sterilization effect, the tap water was stored in an open beaker for 1 day during the experiment, and then the bactericidal effect was tested. In the experiment, the total number of bacteria in the 50mL influent water sample was firstly measured, and then flowed through the photosensitive carbon airgel adsorption column (steps (1) and Step (2)) carry out adsorption treatment, and measure the total number of bacteria in the effluent water sample. The comparative experiment was to pass 50mL of influent water samples through carbon airgel adsorption columns loaded only with TiO2 photocatalyst (step (1) in material preparation) for adsorption tre...

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Abstract

The invention relates to a preparation method and an application of a purification, sterilization and self-cleaning integrated photosensitive adsorption column material. Silver bromide photosensitive agent and titanium dioxide catalyst are loaded onto the surface of a cylindrical carbon aerogel material with stronger adsorption performance than that of active carbon to obtain a novel photosensitive high-efficient adsorption column material with diameter of 1.5cm and length of 2 to 8cm, and the novel photosensitive high-efficient adsorption column material is used as a purification adsorption column for processing tap water. The adsorption function of carbon aerogel for filtering micro contaminants in the water is utilized, a sterilization function of silver (Ag) nano particles formed by radiating a silver bromide (AgBr) sensitiser is used for effectively killing bacteria in the water, the AgBr is used for absorbing the natural light, the photosensitive catalyst which is formed by compounding the AgBr and titanium dioxide is used for catalyzing and decomposing the adsorbed contaminants and obtaining a self-cleaning function, and the three functions are ingeniously combined into a whole. The photosensitive adsorption column material is simple in preparation process, low in production cost and wide in economic and social benefit.

Description

technical field [0001] The invention relates to the fields of water treatment and material chemistry, in particular to a preparation method and application of a photosensitive adsorption column material integrating purification-sterilization-self-cleaning. Background technique [0002] The direct drinking water system of the 2010 Shanghai World Expo provided the tourists with clean drinking water in a timely manner, which left a deep impression on people. The quality of drinking water in Shanghai has always attracted the attention of the general public. Can this direct drinking water technology enter thousands of households of ordinary people? After investigation, we learned that the direct drinking water of the Expo mainly adopts high-tech ultrafiltration membrane treatment technology. This high-tech water purification treatment method often uses granular activated carbon filtration, ultrafiltration membrane module separation and ultraviolet lamp disinfection. It is compose...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30C02F1/28C02F1/50C02F1/30C02F1/58B01J21/18A01N59/16A01P1/00
Inventor 赵思沉
Owner 赵思沉
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