Polluted water body heavy metal adsorption material and preparation method thereof

A technology for adsorbing materials and heavy metals, applied in the fields of phytochemistry and adsorption science, can solve problems such as destroying ecological balance, existing fire hazards, and polluting the environment, and achieves good adsorption capacity, significant removal effect, and good adsorption effect.
CN101497031AInactive Publication Date: 2009-08-05SOUTH CHINA UNIV OF TECH
0 Cites 15 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SOUTH CHINA UNIV OF TECH
Publication Date
2009-08-05
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a method for preparing a heavy metal adsorption material for polluted water. The method comprises that: corn stalk or straw stalk is used as a raw material; under conditions of the temperature of between 40 and 90 DEG C, using 0.0025 to 0.03mol / L potassium permanganate as an initiator, 0.1 to 3.0mol / L acrylonitrile as a monomer and 0.1 to 3.0 percent of nitrogen and nitrogen-methylene-bisacrylamide as crosslinking agents, the raw material is subjected to graft copolymerization, and under the condition of using 1 to 25 mmol / L sulfuric acid as a catalyst, the raw material is subjected to graft copolymerization for 1 to 6 hours; the reaction product is washed by ethanol, suction-filtered, and dried to obtain a coarse product; and the coarse product is placed in a soxhlet extractor to continuously extract the grafting product for 42 to 48 hours, washed by ethanol, washed by deionized water until the pH value is between 6.5 and 7.0 and dried to obtain the heavy metal adsorption material for polluted water. The adsorption material has better adsorption capability on the heavy metal cadmium ions.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the field of phytochemistry and adsorption science, and in particular relates to a heavy metal adsorption material in polluted water and a preparation method thereof. Background technique

[0002] The massive discharge of industrial and mine wastewater and slag is the main reason for the serious pollution of heavy metals in my country's surface water. Cadmium is one of the more harmful heavy metals. As early as 1974, the United Nations Environment Program and the International Labor Health Heavy Metal Committee designated it as a key pollutant. Once excessive cadmium enters the environment, it cannot be biodegraded, but can remain latent in the environment for a long time and enter the human body through the food chain to cause harm. The half-life of cadmium in the living body is 10 to 30 years, and it is known to be the most easily accumulated toxic substance in the body. The hazards to the health of the population are chara...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More