Application of polysaccharide-based hydrogels For water treatments

Due to industrial development, great volumes of pollutants are generated and discharged into the environment, leading to serious problems. Among the contaminants, heavy metals and dyes are the most common and the most hazardous, as their ingestion can have a very long-lasting influence on the human organism. Various kinds of synthetic dyestuffs or heavy metals are seen in the effluents of wastewater. Dyes are colored-aromatic organic compounds and are generally classified into three groups: cationic or basic dyes, nonionic or disperse dyes, and anionic or acidic dyes. Cationic and anionic dyes are the most commonly used dyes in the textile industry due to their good solubility in water, easy application, and inexpensive characteristics [۱, ۲]. Cationic dyes can easily interact with negatively charged cell membrane surfaces and enter cells. Entering the cationic dye into cells leads to serious health problems, hence more research has focused on the removal of cationic dye from water compared to anionic dyes [۳].

کلیدواژه ها:

Hydrogels ، cross-linked network ، polysaccharide ، water treatments