Utilization of agricultural waste to herbicide removal: Magnetic BEA zeolite adsorbents prepared by dry-gel conversion using rice husk ash–derived SiO2 for paraquat removal

Environmental Applications of Biobased Polydopamine-β-Cyclodextrin-Epichlorohydrin Supramolecular Hydrogel with Tuneable Swelling and Selective Adsorption Behaviors

“…Accordingly, various treatment methods have been developed for removing MG from wastewater such as advanced oxidation, membrane separation, and adsorption. − Among these methods, adsorption is one of the most economical and effective methods due to its simple process and operation, less harmful secondary products, and low price. Traditional adsorbents such as activated carbon, charcoal, hydrogel, rice husks, eggshell, metal–organic frameworks, and nanocomposites are currently used in wastewater treatment. − Nonetheless, the abovementioned adsorbents are associated with being expensive to synthesize, significant environmental toxicity, and nonbiodegradability. − …”