Preparation method of grass fiber heavy metal ion adsorbing agent

Abstract

The invention aims to provide a preparation method of a grass fiber heavy metal ion adsorbing agent. For realizing the purpose, the technical scheme adopted by the invention comprises the steps: crushing splendid achnatherum, drying, collecting a certain amount of splendid achnatherum powder, adding little water, adding a defined 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 120-150 DEG C for 60-80min, wherein the process is completed under continuous stirring; and after the reaction is finished, performing suction-filtering, washing, and drying to obtain the grass fiber heavy metal adsorbing agent.

Description

technical field

[0001] The invention relates to the field of heavy metal ion adsorption, in particular to a preparation method of a straw fiber heavy metal adsorbent. 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 has aroused widespread concern from environmental scholars all over the world, and heavy metal treatment technology has become a research hotspot for scientists.

[0004] The existing traditional heavy metal treatment technology has problems such ...

Examples

Embodiment 1

[0014] Crush and dry Achnatherum splendens, take a certain amount of grass powder, add a little water, adjust the pH value to 7.5 with 0.1M sodium hydroxide solution, react at 120 degrees for 60 minutes, and complete this process with constant stirring. After the reaction is completed, the grass fiber heavy metal adsorbent is obtained by suction filtration, washing and drying.

Embodiment 2

[0016] Crush and dry Achnatherum splendens, take a certain amount of grass powder, add a little water, adjust the pH value to 9.0 with 0.1M sodium hydroxide solution, react at 140 degrees for 70 minutes, and complete this process while stirring continuously. After the reaction is completed, the grass fiber heavy metal adsorbent is obtained by suction filtration, washing and drying.

Embodiment 3

[0018] Crush and dry Achnatherum splendens, take a certain amount of grass powder, add a little water, adjust the pH value to 10.0 with 0.1M sodium hydroxide solution, react at 150 degrees for 80 minutes, and complete this process while stirring continuously. After the reaction is completed, the straw fiber heavy metal adsorbent is obtained by suction filtration, washing and drying.

technical field

[0001] The invention relates to the field of heavy metal ion adsorption, in particular to a preparation method of a straw fiber heavy metal adsorbent. 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 has aroused widespread concern from environmental scholars all over the world, and heavy metal treatment technology has become a research hotspot for scientists.

[0004] The existing traditional heavy metal treatment technology has problems such ...

Examples

Embodiment 1

[0014] Crush and dry Achnatherum splendens, take a certain amount of grass powder, add a little water, adjust the pH value to 7.5 with 0.1M sodium hydroxide solution, react at 120 degrees for 60 minutes, and complete this process with constant stirring. After the reaction is completed, the grass fiber heavy metal adsorbent is obtained by suction filtration, washing and drying.

Embodiment 2

[0016] Crush and dry Achnatherum splendens, take a certain amount of grass powder, add a little water, adjust the pH value to 9.0 with 0.1M sodium hydroxide solution, react at 140 degrees for 70 minutes, and complete this process while stirring continuously. After the reaction is completed, the grass fiber heavy metal adsorbent is obtained by suction filtration, washing and drying.

Embodiment 3

[0018] Crush and dry Achnatherum splendens, take a certain amount of grass powder, add a little water, adjust the pH value to 10.0 with 0.1M sodium hydroxide solution, react at 150 degrees for 80 minutes, and complete this process while stirring continuously. After the reaction is completed, the straw fiber heavy metal adsorbent is obtained by suction filtration, washing and drying.