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Heavy metal adsorbent used for waste water treatment and preparation method and application thereof

A wastewater treatment and adsorbent technology, which is applied in water/sewage treatment, adsorption water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problem of low efficiency of kaolin adsorption of heavy metals, and achieve high reuse times and adsorption The effect of high efficiency and low production cost

Inactive Publication Date: 2017-04-26
HENAN SHUIJINGTOU CULTURAL MEDIA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the efficiency of heavy metal adsorption by kaolin alone is low, how to simply treat it to improve the efficiency of heavy metal adsorption is the problem to be solved in this patent

Method used

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  • Heavy metal adsorbent used for waste water treatment and preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] In the embodiment of the present invention, a heavy metal adsorbent for wastewater treatment is composed of the following raw materials in parts by weight: 31 parts of kaolin, 1 part of thioglycolic acid, 8 parts of acrylamide, and 23 parts of ethylene glycol.

[0018] Mix ethylene glycol with 2.6 times the mass of deionized water to prepare an ethylene glycol solution. The kaolin and acrylamide were mixed and ground, passed through a 120-mesh sieve, then added ethylene glycol solution, heated to 65°C and sonicated at this temperature for 27 minutes, the ultrasonic power was 1000W, and then thioglycolic acid was added dropwise. Warm up to 118℃ and seal and stir at this temperature for 75min, then microwave treatment for 15min, microwave power is 1000W, then stir at 99℃ to dryness, and then calcinate in muffle furnace at 430℃ for 4.3h. Adsorbent.

[0019] Through repeated experiments, it is obtained that the adsorption capacity of the adsorbent is 60-70 mg / g; the adsorbent i...

Embodiment 2

[0021] In the embodiment of the present invention, a heavy metal adsorbent for wastewater treatment is composed of the following raw materials in parts by weight: 39 parts of kaolin, 5 parts of thioglycolic acid, 16 parts of acrylamide, and 31 parts of ethylene glycol.

[0022] Mix ethylene glycol with 2.6 times the mass of deionized water to prepare an ethylene glycol solution. The kaolin and acrylamide were mixed and ground, passed through a 120-mesh sieve, then added ethylene glycol solution, heated to 65°C and sonicated at this temperature for 27 minutes, the ultrasonic power was 1000W, and then thioglycolic acid was added dropwise. Warm up to 118℃ and seal and stir at this temperature for 75min, then microwave treatment for 15min, microwave power is 1000W, then stir at 101℃ to dryness, and then calcinate in muffle furnace at 430℃ for 4.3h. Adsorbent.

[0023] Through repeated experiments, it is obtained that the adsorption capacity of the adsorbent is 60-70 mg / g; the adsorben...

Embodiment 3

[0025] In the embodiment of the present invention, a heavy metal adsorbent for wastewater treatment is composed of the following raw materials in parts by weight: 33 parts of kaolin, 2 parts of thioglycolic acid, 10 parts of acrylamide, and 25 parts of ethylene glycol.

[0026] Mix ethylene glycol with 2.6 times the mass of deionized water to prepare an ethylene glycol solution. The kaolin and acrylamide were mixed and ground, passed through a 120-mesh sieve, then added ethylene glycol solution, heated to 65°C and sonicated at this temperature for 27 minutes, the ultrasonic power was 1000W, and then thioglycolic acid was added dropwise. Warm up to 118°C and seal and stir at this temperature for 75min, then microwave treatment for 15min, microwave power is 1000W, then stir at 100°C to dryness, and then calcinate in a muffle furnace at 430°C for 4.3h. Adsorbent.

[0027] Through repeated experiments, it is obtained that the adsorption capacity of the adsorbent is 65-75 mg / g; the ads...

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Abstract

The invention discloses a heavy metal adsorbent used for waste water treatment and a preparation method and application thereof. The heavy metal adsorbent is composed of the following raw materials, by weight, of 31-39 parts of kaolin, 1-5 parts of thioglycollic acid, 8-16 parts of acrylamide and 23-31 parts of ethanediol. The preparation method of the heavy metal ion adsorbent comprises the steps that the kaolin is mixed and grinded with the acrylamide, then the ethanediol is added, ultrasonic treatment is conducted, the thioglycollic acid is added dropwise, and microwave treatment is conducted. The prepared adsorbent has high adsorption efficiency on heavy metals and can be reused 100 times or above, and a good governance function on water heavy metal pollution is achieved. According to the heavy metal adsorbent used for the waste water treatment and the preparation method, the reaction condition is mild, the amount of the raw materials are fewer, and the materials are acquired widely, process operation is easy, manufacturing cost is low, economy, environmental protection and high yield are achieved, and the heavy metal adsorbent is suitable for industrialized production. The removal rate of the adsorbent on heavy metal ions in high-concentration waste water can reach up to 98%, and the adsorbent can be widely applied to the treatment of the heavy metal waste water.

Description

Technical field [0001] The invention relates to the technical field of environmental protection materials, in particular to a heavy metal adsorbent used for wastewater treatment and a preparation method and application thereof. Background technique [0002] Water pollution caused by heavy metal ions is a serious environmental problem facing the world. Chromium, cadmium and lead are the main heavy metal ions that cause water pollution. Among them, cadmium and lead are usually the highest in content and are the most harmful to human health. According to World Health Organization standards, the maximum content of cadmium and lead in drinking water cannot be higher than 0.003 and 0.01 mg / g. The current methods used to remove heavy metal ions mainly include membrane separation, acid-base neutralization, sedimentation and other methods, but the high cost, long cycle and difficult reaction control limit its wide commercial application. [0003] The treatment of heavy metal wastewater by ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/12B01J20/30C02F1/28C02F101/20
CPCB01J20/12C02F1/281C02F2101/20
Inventor 不公告发明人
Owner HENAN SHUIJINGTOU CULTURAL MEDIA CO LTD
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