Research progress on the adsorption of heavy metal ions in water by biomass composites.

With the development of modern industry, heavy metal water pollution has become one of the most important environmental problems. Heavy metal ions are highly toxic and difficult to degrade, being harmful to humans, aquatic animals, and plants to a large extent and damaging ecosystems. The advantages of low cost, high removal efficiency and recyclability of the adsorption method make it one of the important methods of wastewater treatment. Biomass materials are rich in resources, low cost, green and environmentally friendly, and have been widely studied as new adsorbent raw materials. Based on this, taking metal-organic framework, zeolite and biochar biomass materials as examples, this paper first reviews the preparation and modification methods of biomass matrix composites and summarizes the influence of the properties of adsorbents on metal ion adsorption, secondly elaborates the adsorption mechanism between them and metal ions, and finally puts forward the prospect of biomass matrix composites in the development of water pollution control. [ABSTRACT FROM AUTHOR]