Removal of cadmium from aqueous solution using mesoporous PVA/TEOS/APTES composite nanofiber prepared by sol–gel/electrospinning

Application of response surface methodology for Cd(II) adsorption on maize tassel-magnetite nanohybrid adsorbent

“…Beyond equilibrium, the sorption became constant because the active sites were now saturated so there was minimum or no significant adsorption [14]. Solution pH affects both the ionisation of the functional groups present on the surface of the adsorbent and the metal ions [35]. Fig.…”

“…Beyond the optimum, the pH profile shows a further increase in Cd(II) ions removal. At pH greater than 6, Cd(II) ions tend to form soluble hydroxides [35]. Fig.…”

Comparative study of PVA/SiO2 and PVA/SiO2/glutaraldehyde (GA) nanocomposite membranes prepared by single-step solution casting method

“…These membranes have a highly hydrophilic nature, which is considered as an advantage for some applications, but in most cases it becomes a hindrance due to the high swelling capacity of the membranes in water. To enhance the stability and performance of PVA-based membranes, a variety of chemical modifications have been employed, e.g., cross-linking [5][6][7], electrospinning [8][9][10], blending [11], sol-gel process [12,13], and grafting [14,15].…”

Application of response surface methodology for thorium adsorption on PVA/Fe3O4/SiO2/APTES nanohybrid adsorbent

“…where K C is the equilibrium adsorption constant that depends on the temperature and is calculated according to the following equation [42]: Table 7. As can be seen in Table 7 .…”