Adsorbent for treating heavy metal wastewater, as well as 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 red jade soil adsorption of heavy metals, and achieve high reuse times, High yield and good governance effect

Inactive Publication Date: 2017-02-15
ZHENGZHOU LIFUAI BIOLOGICAL TECH 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 single red jade soil is low, how to simply treat it to improve the efficiency of adsorption of heavy metals is the problem to be solved in this patent

Method used

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  • Adsorbent for treating heavy metal wastewater, as well as 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, an adsorbent for heavy metal wastewater treatment is composed of the following raw materials in parts by weight: 31 parts of red jade, 1 part of thioglycolic acid, 8 parts of acrylamide, and 23 parts of polyethylene glycol.

[0018] The polyethylene glycol solution was prepared by mixing polyethylene glycol with 2.6 times the mass of deionized water. The red jade soil and acrylamide were mixed and ground, passed through a 120-mesh sieve, then a polyethylene glycol solution was added, the temperature was raised to 65 ° C, and the temperature was ultrasonically treated for 27 min. The ultrasonic power was 1000 W, and then thioglycolic acid was added dropwise. After completion, the temperature was raised to 118 °C and sealed and stirred at this temperature for 75 minutes, then microwaved for 15 minutes, the microwave power was 1000W, and then stirred at 99 °C until dry, and then calcined in a muffle furnace at 430 °C for 4.3h The...

Embodiment 2

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

[0022] The polyethylene glycol solution was prepared by mixing polyethylene glycol with 2.6 times the mass of deionized water. The red jade soil and acrylamide were mixed and ground, passed through a 120-mesh sieve, then a polyethylene glycol solution was added, the temperature was raised to 65 ° C, and the temperature was ultrasonically treated for 27 min. The ultrasonic power was 1000 W, and then thioglycolic acid was added dropwise. After completion, the temperature was raised to 118°C and sealed and stirred at this temperature for 75min, then microwaved for 15min, the microwave power was 1000W, and then stirred at 101°C until dry, and then calcined in a muffle furnace at 430°C for 4.3h The adsorbent...

Embodiment 3

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

[0026] The polyethylene glycol solution was prepared by mixing polyethylene glycol with 2.6 times the mass of deionized water. The red jade soil and acrylamide were mixed and ground, passed through a 120-mesh sieve, then a polyethylene glycol solution was added, the temperature was raised to 65 ° C, and the temperature was ultrasonically treated for 27 min. The ultrasonic power was 1000 W, and then thioglycolic acid was added dropwise. After completion, the temperature was raised to 118 °C and sealed and stirred at this temperature for 75 minutes, then microwaved for 15 minutes, the microwave power was 1000W, and then stirred at 100 °C until dry, and then calcined in a muffle furnace at 430 °C for 4.3h ...

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Abstract

The invention discloses an adsorbent for treating heavy metal wastewater, as well as a preparation method and application thereof. The adsorbent is prepared from the following raw materials in parts by weight: 31-39 parts of red jade soil, 1-5 parts of thioglycollic acid, 8-16 parts of acrylamide and 23-31 parts of polyethylene glycol. The adsorbent disclosed by the invention is prepared according to the steps of mixing and grinding the red jade soil and acrylamide, adding polyethylene glycol and performing ultrasonic treatment, and dropwise adding thioglycollic acid and performing microwave treatment. The adsorbent is very high in absorbing efficiency for heavy metal, can be repeatedly used for more than 100 times and has an excellent treating function for heavy metal pollution of water sources. The adsorbent has the advantages of mild reaction conditions, few raw materials, extensive raw material resources, simple process operation, low production cost, economic and environment-friendly effects, high yield and suitability for industrial production. The adsorbent disclosed by the invention has a removing rate for heavy metal ions in high-concentration wastewater above 98% and can be widely applied to the treatment for heavy metal wastewater.

Description

technical field [0001] The invention relates to the technical field of environmental protection materials, in particular to an adsorbent for heavy metal 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 cause the greatest harm to human health. According to the World Health Organization standard, the maximum levels of cadmium and lead in drinking water cannot be higher than 0.003 and 0.01 mg / g. The current methods for removing heavy metal ions mainly include membrane separation, acid-base neutralization, sedimentation and other methods, but the high cost, long period and difficult reaction control limit its wide commercial application. [0003] Adsorption treatment of heavy metal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/30B01J20/34C02F1/28
CPCB01J20/103B01J20/22B01J20/262B01J20/3483C02F1/28C02F1/281C02F1/285C02F2303/16
Inventor 不公告发明人
Owner ZHENGZHOU LIFUAI BIOLOGICAL TECH CO LTD
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