Hydrogel |
Application |
Polyacrylamide |
Used as flocculants or coagulants in industrial wastewater treatment [68]. |
Guar gum |
Used to reduce raw water turbidity from 26.5 to 1.0 [69]. |
Gum tragacanth |
Used as an emulsifier, thickener, and binder in industries [70]. |
Gum Arabic |
Used to reduce the high concentration of alum needed for water treatment [71]. |
Gum ghatti |
Widely used as adsorbents for removing different impurities from wastewater, like synthetic dyes and toxic heavy metal cations [72]. |
Xanthan gum |
Used as a novel flocculant [73]. |
Alginate |
Used as a physical barrier against native microorganisms in wastewater [74]. |
Chitosan |
Used for the heavy metals and dyes adsorption [75]. |