Green solvent modified zeolite phenol sorbent and preparation method thereof

A modified zeolite and green solvent technology, which is applied in chemical instruments and methods, crystalline aluminosilicate zeolite, and other chemical processes, can solve the problems of complex regeneration, low processing efficiency, and high cost, and achieve improved adsorption capacity, The effect of easy to obtain raw materials and easy operation

Inactive Publication Date: 2013-06-19
SHENYANG WATER AFFAIRS GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Domestic industrial wastewater generally uses activated carbon as an adsorbent, but due to the high cost of activated carbon, complex and expensive regeneration, and low treatment efficiency, the pollution treatment is economically unaffordable

Method used

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  • Green solvent modified zeolite phenol sorbent and preparation method thereof
  • Green solvent modified zeolite phenol sorbent and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0020] Example 1: Preparation of Green Solvent Modified Zeolite Phenol Adsorbent

[0021] (1) Raw materials and reagents

[0022] Natural zeolite, fineness 200 mesh, Shangtianlai, Xinyang, Henan.

[0023] Hexadecyl-3-methylimidazolium chloride, molecular weight 361.01, CAS: 404001-62-3, Shanghai Darui Fine Chemicals Co., Ltd.

[0024] (2) Preparation steps

[0025] A. get the hexadecyl-3-methylimidazolium chloride aqueous solution whose concentration is 1.1wt%, adjust the pH of the solution to 7.5 with NaOH solution, and prepare the modifying agent solution;

[0026] B. Mix 50ml modifier solution with 5g natural zeolite, place it in a constant temperature shaker in a water bath, and vibrate at 20°C for 30min;

[0027] C. Carry out solid-liquid separation in a centrifuge, take the precipitate and wash it with distilled water and then centrifuge, repeat the above steps until the supernatant is tested with silver nitrate solution and there is no white precipitate;

[0028] D....

Embodiment 2

[0030] Embodiment 2 Phenol adsorption performance measurement

[0031] (1) Samples and reagents

[0032] 1) Natural zeolite, fineness 200 mesh, Xinyang Shangtianti, Henan.

[0033] 2) Modified zeolite, prepared in Example 1.

[0034] 3) Phenol-free water: Add 0.2g of activated carbon powder activated at 200°C for 0.45h to 1L of water, shake well, and let stand overnight. Filter with double-layer medium-speed filter paper, transfer to a distillation flask for heating and distillation, and collect the distillate for later use.

[0035] 4) Phenol standard stock solution: Weigh 1g of phenol and dissolve it in water, transfer it into a 1L volumetric flask, dilute with water to the marked line, and shake well. ρ = 1 g / L. Stored in the refrigerator, it is stable for at least one month.

[0036] 5) Phenol standard intermediate solution: Take 1mL of phenol stock solution in a 100mL volumetric flask and dilute with water to the marked line. ρ = 10.0mg / L. Configured on the day of ...

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Abstract

The invention relates to a preparation method of a green solvent modified zeolite phenol sorbent. The preparation method comprises the following steps of: a, adjusting the pH value of a 1.0-1.2wt% hexadecyl-3-methylimidazole chloride solution to be alkali, thereby preparing a modifier solution; b, mixing zeolite and the modifier solution prepared in the step a; c, carrying out solid-liquid separation in a centrifugal machine to obtain a sediment, cleaning the sediment by using distilled water, then, centrifuging, and repeating the steps until a supernatant liquid is checked by using a silver nitrate solution to have no white sediment; and d, drying a solid substance by using an electrothermal blowing dry box to obtain modified zeolite, wherein the solid substance is obtained through separation in the step c. The method has the following advantages: raw materials are easily available, and the method is simple and convenient to operate; and the prepared phenol sorbent is environmental-friendly and pollution-free, and the absorption capacity of the phenol sorbent is increased by over 10 times than that of common zeolite.

Description

technical field [0001] The invention relates to a phenol adsorbent, in particular to a green solvent modified zeolite phenol adsorbent and a preparation method thereof. Background technique [0002] Phenol and phenolic derivatives are both environmental pollutants. Many industries, such as petroleum, petrochemical, coal conversion, pesticides, coatings, pharmaceuticals, plastics, paper and other industries, discharge phenolic compounds into the environment. Phenol is discharged into groundwater, surface water and soil through various channels, which has brought serious harm to the ecological environment. There are many physical, chemical and biological methods for removing phenol pollutants in water. Activated carbon adsorption, biodegradation, chemical oxidation, solvent extraction, resin and membrane ion exchange are more commonly used methods. In addition, there are also selective adsorption properties of clay minerals, fly ash, coal, waste, and chitin to adsorb phenol i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/18B01J20/30C01B39/02
Inventor 张国祥谭明高云鹤张树冬高国伟张铁源曲文龙
Owner SHENYANG WATER AFFAIRS GROUP
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