“…13 For example, numerous adsorbents can be suitably engineered for regeneration and feasible reuse in multiple adsorption cycles, leading to a notable reduction in operational cost. 14,15 Some of the adsorbent materials proposed for GLY are biochar, double laminar hydroxide (Mg-Al) 16 or metal oxides (TiO 2 ), 17 and magnetic nanoparticles (MNPs), 18 for example, trimethyl chitosan-silica hybrid functionalised iron oxide (NPs) 19 and reduced graphene oxide (rGO). 20 These materials exhibit different drawbacks, such as slow adsorption time, [21][22][23] ineffectiveness against high concentrations of contaminants, 18 lack of feasibility in implementation on a large scale and low recovery 21,22 and recyclability.…”