Preparation method and application method of adsorbent for treating reactive dye wastewater

A technology of reactive dyes and application methods, which is applied in the field of wastewater treatment technology and environmental protection, can solve the problems of regeneration, large amount of sludge, and high cost, and achieve the effect of enhanced ability, good adsorption characteristics, and high-efficiency adsorption

Active Publication Date: 2017-11-07
INNER MONGOLIA UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, the commonly used dye wastewater treatment methods include chemical oxidation method, flocculation precipitation method, ion exchange method, activated carbon adsorption method, ultrafiltration membrane filtration method and biodegradation method, etc., but these metho

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  • Preparation method and application method of adsorbent for treating reactive dye wastewater
  • Preparation method and application method of adsorbent for treating reactive dye wastewater
  • Preparation method and application method of adsorbent for treating reactive dye wastewater

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Example Embodiment

[0033] Example 1

[0034] A method for preparing an adsorbent for treating reactive dye waste water, the implementation steps of which are as follows:

[0035] In the first step, the waste blast furnace water quenched slag was first washed with tap water, and then washed with distilled water to remove surface impurities and then filtered and separated; The blast furnace water quenched slag was mechanically pulverized, passed through a 100-mesh sieve, and the material under the sieve was taken and placed in a desiccator for use;

[0036] In the second step, take 10 g of blast furnace water quenched slag obtained in the first step, add 100 ml of the hexadecyltrimethylammonium bromide with a concentration of 0.008 mol / L, and oscillate at a constant temperature in a water bath at 25 °C and 120 r / min. The product was obtained by continuous shaking in the apparatus for 24 h; the product was repeatedly washed with deionized water until neutral, and dried in a blast drying oven at 90...

Example Embodiment

[0041] Example 2

[0042] An application of an adsorbent for treating reactive dye wastewater, the steps are: adding 1-16 g / L of the adsorbent prepared in Example 1 into 50 ml of reactive brilliant red with a concentration of 40 mg / L and a solution ionic strength of 0 mol / L The wastewater was shaken at 25 °C, the pH value was 2, the rotation speed was 120 rpm, and the time was 60 min. After the reaction, the adsorbent was separated from the solid and liquid.

[0043] Determine the concentration of reactive brilliant red in the wastewater after separation, and calculate the removal rate and adsorption capacity, see Figure 5 , Figure 5 It is a schematic diagram showing the effect of adsorbent dosage on the adsorption effect of reactive brilliant red. Depend on Figure 5 It can be seen that when the dosage of adsorbent increases from 1 g / L to 8 g / L, the removal rate of reactive brilliant red also increases from 27.34% to 92.04%. When the dosage exceeds 8 g / L, the removal rat...

Example Embodiment

[0044] Example 3

[0045] The removal rate of the adsorbent of the invention to the reactive brilliant red wastewater under different pH conditions. The adsorbent 8g / L prepared in Example 1 was added to 50 ml of reactive brilliant red wastewater with a concentration of 40 mg / L and a solution ionic strength of 0 mol / L, and the solution was shaken at 25 °C, with a pH value of 2 to 12. , the rotation speed was 120 rpm, and the time was 60 min. After the reaction, the adsorbent was separated from the solid and liquid.

[0046] Determine the concentration of reactive brilliant red in the wastewater after separation, and calculate the removal rate and adsorption capacity, see Image 6 , Image 6 It is a schematic diagram showing the effect of pH on the adsorption effect of reactive brilliant red. Depend on Image 6 It can be seen that with the increase of pH, the removal rate and adsorption amount both showed a downward trend. The maximum removal rate and adsorption amount appea...

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Abstract

The invention relates to a preparation method and an application method of an adsorbent for treating reactive dye wastewater. The preparation method of the adsorbent comprises the steps as follows: blast furnace water-quenched slag is taken as a raw material, the raw material is subjected to pretreatment including washing, drying, crushing, sieving and the like, then, the pretreated blast furnace water-quenched slag is added to a CTAB (cetyl trimethyl ammonium bromide) solution for oscillation, a mixed solution is filtered, a filtered material is washed and dried, and the absorbent is obtained. According to the method for removing reactive dye in wastewater by the aid of the adsorbent, the adsorbent is uniformly mixed with the reactive dye wastewater, oscillation reaction and solid-liquid separation are performed, the reactive dye is removed, and the adsorbent is separated. The preparation method and the application method have the advantages that raw materials of the adsorbent are abundant and low in cost; the preparation process of the adsorbent is convenient and feasible; the adsorption rate is high, the removal rate is high and the like. Therefore, the modified blast furnace water-quenched slag absorbent is an economical, environment-friendly and efficient adsorbent, and waste recycling and treatment of waste with waste are realized.

Description

technical field [0001] The present invention relates to a preparation method and application of an adsorbent, more specifically to a preparation method of a modified blast furnace water-quenched slag adsorbent, and a method for using the adsorbent to treat reactive dye wastewater, belonging to wastewater treatment technology and environmental protection technology field. Background technique [0002] Dyeing, textile, printing, papermaking and other industries have developed rapidly in recent years, and dye wastewater has become one of the key pollution sources of water environment, which has aroused widespread concern. At present, there are about 10,000 kinds of dyes available in the world, and about 700,000 tons of dyes are used every year. It is estimated that 10-15% of the used dyes are discharged into the water body, because the dyes in the wastewater can absorb light, reduce the penetration ability of light, interfere with photosynthesis and self-purification ability o...

Claims

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Application Information

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IPC IPC(8): B01J20/30B01J20/22C02F1/28C02F103/28C02F103/30
CPCB01J20/22B01J2220/4887C02F1/285C02F2101/308C02F2103/28C02F2103/30
Inventor 王哲姜庆宏张凯陈莉荣张思思
Owner INNER MONGOLIA UNIV OF SCI & TECH
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