chitosan removes heavy metal in wastewater treatment

Chitosan removes heavy metal in wastewater treatment

Chitosan, as a natural biopolymer material, has good biocompatibility, non-toxicity and adsorption properties, but it is easily hydrolyzed under acidic conditions and has weak adsorption properties. By compounding with inorganic materials, the adsorption performance and mechanical strength of chitosan can be effectively improved to meet the needs of wastewater treatment under different conditions.

The problem of heavy metal pollution in wastewater is becoming increasingly serious. Heavy metals are highly toxic and bioaccumulative, posing a serious threat to human health and the ecological environment. Therefore, the development of efficient, economical and environmentally friendly heavy metal removal technology has become the focus of current research. The adsorption method has become an important means of removing heavy metal ions from wastewater due to its simple operation, low cost and environmental friendliness.

Chitosan/magnetic nanoparticles (chitosan/MNPs) composite adsorbent: Magnetic nanoparticles (MNPs) have a large specific surface area and magnetic properties, and are easily recovered by an external magnetic field. Studies have shown that chitosan/MNPs composite materials have efficient adsorption capacity for heavy metal ions such as Pb, Cr, and Zn, and magnetic recovery can achieve material recycling.

Chitosan/graphene oxide (chitosan/GO) composite adsorbent: Graphene oxide (GO) has a layered structure and rich oxygen-containing functional groups, and has a strong affinity for heavy metal ions. Studies have shown that chitosan/GO composite materials have high adsorption capacity for heavy metal ions such as Cu, Pb, and Ni, and the adsorption stability of the material can be improved through forms such as aerogel.

Chitosan/clay mineral (chitosan/CM) composite adsorbent: Clay minerals (CM) have high cation exchange capacity and porous structure, but are easy to disperse in water systems and difficult to recover. By compounding with chitosan, the stability and adsorption performance of CM in water can be improved. Studies have shown that chitosan/CM composite materials have good adsorption capacity for heavy metal ions such as Cu, Cd, and Pb, and the specific surface area and adsorption performance of the material can be further improved through forms such as gel and membrane.

Chitosan/biochar (chitosan/BC) composite adsorbent: Biochar (BC) is prepared by high-temperature pyrolysis of biomass and has a rich pore structure and a stable carbon skeleton. Studies have shown that Chitosan/BC composite materials have high adsorption capacity for heavy metal ions such as Cd and Pb, and the adsorption performance of the material can be further improved by modification.

In summary, chitosan/inorganic composite adsorbents show broad application prospects in removing heavy metal ions from wastewater. Future research should further explore the application of these composite materials in actual environments and consider the feasibility and economy of their industrial production to achieve efficient and environmentally friendly heavy metal pollution control.

Yuda Century As a supplier of chitosan application solutions with 21years experience.

Our main products: chitin, chitosan, Hydroxypropyl Chitosan, Hydrochloride Chitosan, Chitosan Lactate, Carboxymethyl Chitosan.

With origin: Chitosan Fresh North Atlantic Shrimp Shell/Crab Shell Origin

Chitosan Aspergillus Niger Origin

Chitosan Agaricus bisporus Origin mushroom

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