Adsorbent for heavy metal 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 responsiveness Mild condition, high yield effect

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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  • Adsorbent for heavy metal 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, an adsorbent for heavy metal 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 ethanol.

[0018] Mix ethanol with 2.6 times its mass of deionized water to prepare an ethanol solution. Mix and grind kaolin and acrylamide, pass through a 120-mesh sieve, then add ethanol solution, raise the temperature to 65°C and ultrasonically treat it at this temperature for 27 minutes, the ultrasonic power is 1000W, then add thioglycolic acid dropwise, and raise the temperature to 118°C, sealed and stirred at this temperature for 75 minutes, and then microwaved for 15 minutes with a microwave power of 1000W, then stirred at a temperature of 99°C until dry, and then calcined in a muffle furnace at 430°C for 4.3 hours to obtain the adsorbent .

[0019] Through repeated experiments, it is obtained that the adsorption capacit...

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 kaolin, 5 parts of thioglycolic acid, 16 parts of acrylamide, and 31 parts of ethanol.

[0022] Mix ethanol with 2.6 times its mass of deionized water to prepare an ethanol solution. Mix and grind kaolin and acrylamide, pass through a 120-mesh sieve, then add ethanol solution, raise the temperature to 65°C and ultrasonically treat it at this temperature for 27 minutes, the ultrasonic power is 1000W, then add thioglycolic acid dropwise, and raise the temperature to 118°C, sealed and stirred at this temperature for 75 minutes, and then microwaved for 15 minutes with a microwave power of 1000W, then stirred at a temperature of 101°C until dry, and then calcined in a muffle furnace at 430°C for 4.3 hours to obtain the adsorbent .

[0023] Through repeated experiments, it is obtained that the adsorption capa...

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 kaolin, 2 parts of thioglycolic acid, 10 parts of acrylamide, and 25 parts of ethanol.

[0026] Mix ethanol with 2.6 times its mass of deionized water to prepare an ethanol solution. Mix and grind kaolin and acrylamide, pass through a 120-mesh sieve, then add ethanol solution, raise the temperature to 65°C and ultrasonically treat it at this temperature for 27 minutes, the ultrasonic power is 1000W, then add thioglycolic acid dropwise, and raise the temperature to 118°C, sealed and stirred at this temperature for 75 minutes, and then microwaved for 15 minutes with a microwave power of 1000W, then stirred at a temperature of 100°C until dry, and then calcined in a muffle furnace at 430°C for 4.3 hours to obtain the adsorbent .

[0027] Through repeated experiments, it is obtained that the adsorption capa...

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Abstract

The invention discloses an adsorbent for heavy metal waste water treatment and a preparation method and an application thereof. The adsorbent is composed of the following raw materials in parts by weight: 31-39 parts of kaolin, 1-5 parts of mercaptoacetic acid, 8-16 parts of acrylamide and 23-31 parts of ethanol. The preparation method comprises the following steps: mixing and grinding kaolin and acrylamide; then adding ethanol for ultrasonic treatment; and dropwise adding mercaptoacetic acid for micro-wave treatment. The adsorbent is extremely high in adsorption efficiency, can be repeatedly used more than 100 times, and has a good treatment effect on heavy metal pollution of a water source. The adsorbent disclosed by the invention is mild in reaction condition, few in raw material, wide in material, simple in process operation, low in production cost, economical, environmental-friendly, high in yield and suitable for industrial production. The removal rate of the adsorbent disclosed by the invention on heavy metal ions in high-concentration waste water can reach 98% above, and the adsorbent can be widely applied to treating heavy metal waste water.

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 its preparation method and application. 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 usually have the highest content and are the most harmful to human health. According to the World Health Organization standard, the maximum content of cadmium and lead in drinking water should not be higher than 0.003 and 0.01mg / 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 cycle and difficult control of the reaction 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): B01J20/22B01J20/30C02F1/28
CPCB01J20/12B01J20/22C02F1/28C02F1/281C02F1/285
Inventor 不公告发明人
Owner HENAN SHUIJINGTOU CULTURAL MEDIA CO LTD
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