Study of the removal of Zn(II) from aqueous solution using polypyrrole nanocomposite

The behaviors and characteristics of a mesoporous activated carbon prepared from Tamarix hispida for Zn(II) adsorption from wastewater

“…The increasing adsorption efficiency with increasing adsorbents dose can be explained by the fact that higher the dose of adsorbents in the solution, greater the availability of exchangeable sites for Zn(II) and greater the surface area. This result is in accordance with other studies [3,5,24,25], where an increase in the Zn(II) removal was observed with an increase in the dose of adsorbent. In addition, it can be seen that the Zn(II) removal by the ACTH and SAC was unchanged with the increasing dosage of the adsobents from 10 to 20 g/L.…”

Removal of zinc and lead from aqueous solution by nanostructured cedar leaf ash as biosorbent

“…This would indicate further intricacy existed in the adsorption process [58]. The three stages in the plot suggest that the adsorption process occurs by surface adsorption and intraparticle diffusion [59]. Larger intercepts (I value in Table 3) indicate that surface diffusion has a significant role as the rate-limiting step.…”

Investigation of α‐iron oxide‐coated polymeric nanocomposites capacity for efficient heavy metal removal from aqueous solution

“…Among these methods; adsorption has increasingly received more attention due to simplicity, cost-effectiveness and high feasibility of industrial application without yielding harmful by-products. The most common adsorbent materials are rice husk ash [9], bio-char [10,11], cellulose [3,12], algal biomass [13], lignin [14,15], carbon nanotube [16], activated carbon [17,18], chitosan [19] polypyrrole [20] titanium oxide [21] and alginate [22]. However, these adsorbents described above suffer from low adsorption capacities and separation inconvenience.…”