Grass fiber modified heavy metal adsorbent and preparation method thereof

Abstract

The invention aims at providing grass fiber modified heavy metal adsorbent and a preparation method thereof. In order to achieve the aim, the preparation method comprises the following steps: crushing and drying achnatherum splendens, taking a certain amount of grass meal, adding a small amount of water, adjusting the pH value to be 7.5-10.5 by a 0.1M sodium hydroxide solution, stirring for reacting at 20-30 DEG C for 60-80 minutes, then adding 30% hydrogen peroxide, reacting for 60 minutes, carrying out suction filtration after the reaction, washing, and drying to obtain the heavy metal adsorbent.

Description

technical field [0001] The invention relates to the field of adsorption of heavy metal ions, in particular to an adsorbent for adsorbing heavy metals by modified grass fibers and a preparation method thereof. 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 me...

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Problems solved by technology

Overcome the disadvantages of harsh conditions and high cost in the existing technology