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Method for preparing heavy metal adsorbing agent from splendid achnatherum through oxidative modification

An oxidative modification, Achnatherum splendens technology, applied in chemical instruments and methods, other chemical processes and other directions, can solve problems such as high cost and harsh conditions, and achieve the effects of short reaction time, stable performance and low price

Inactive Publication Date: 2014-10-01
QINGDAO KEWEIYUAN ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for preparing a heavy metal adsorbent by oxidatively modifying Achnatherum splendens, so as to overcome the disadvantages of harsh conditions and high cost in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Grind and dry Achnatherum splendens, take one part by weight of grass powder, add a little water, add five parts by weight of potassium permanganate, adjust the pH value to 7.5 with 0.1M sodium hydroxide solution, and react at 50 degrees for 1 hour , this process is completed with constant stirring. After the reaction is completed, the heavy metal adsorbent product is obtained by suction filtration, washing and drying.

Embodiment 2

[0016] Grind and dry Achnatherum splendens, take one part by weight of grass powder, add a little water, add five parts by weight of potassium permanganate, adjust the pH value to 9.0 with 0.1M sodium hydroxide solution, and react at 65 degrees for 3 hours , this process is completed with constant stirring. After the reaction is completed, the heavy metal adsorbent product is obtained by suction filtration, washing and drying.

Embodiment 3

[0018] Grind and dry Achnatherum splendens, take one part by weight of grass powder, add a little water, add five parts by weight of potassium permanganate, adjust the pH value to 10.5 with 0.1M sodium hydroxide solution, and react at 80 degrees for 4 hours , this process is completed with constant stirring. After the reaction is completed, the heavy metal adsorbent product is obtained by suction filtration, washing and drying.

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PUM

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Abstract

The invention aims to provide a method for preparing a heavy metal adsorbing agent from splendid achnatherum through oxidative modification. For achieving the purpose, the technical scheme adopted by the invention comprises the following steps: crushing and drying the splendid achnatherum, collecting a part by weight of splendid achnatherum powder, adding little water, adding a certain amount of potassium permanganate, regulating a pH value to 7.5-10.5 by using a 0.1M sodium hydroxide solution, reacting at a temperature of 50-80 DEG C for 1-4h, wherein the process is completed under continuous stirring; and after the reaction is finished, performing suction-filtering, washing, and drying to obtain the heavy metal adsorbing agent product.

Description

technical field [0001] The invention relates to the field of heavy metal ion adsorption, in particular to a method for preparing a heavy metal adsorbent from oxidatively modified Achnatherum splendens. Background technique [0002] In recent years, with the rapid development of industrialization, the use of heavy metals has become more and more extensive, and the accompanying heavy metal pollution has become more and more serious. [0003] Frequent outbreaks of pollution accidents will destroy the normal physiological and metabolic activities of organisms, and even produce "three causes" (carcinogenic, teratogenic, and mutagenic) substances, which are extremely harmful to organisms and even affect generations. The increasing and harmfulness of heavy metal pollution load has aroused widespread concern of environmental scholars around the world, and heavy metal treatment technology has become a research hotspot for scientists. [0004] The existing traditional heavy metal tre...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/30
Inventor 不公告发明人
Owner QINGDAO KEWEIYUAN ENVIRONMENTAL PROTECTION TECH
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