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Mohamed E. Mahmoud,Azza E.H. Abdou,Gehan M. Nabil 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.32 No.-
A method is described for functionalization of nano-zirconium silicate with 3-aminopropyltrimethox-ysilane by a fast solvent-free reaction using microwave-assisted fabrication approach to produce a novelNano-ZrSiO4–NH2 adsorbent. The structure was confirmed from the FT-IR, SEM, TGA and surface areaanalysis. The metal adsorption and selectivity properties were examined and evaluated from thedistribution coefficients (Kd) of a series of metal ions. Nano-ZrSiO4–NH2 was identified to exhibit 6.300,4.000 and 2.100 mmol g 1 as the highest capacity values for Cu(II), Cd(II) and Pb(II), respectively using0.005 g of the adsorbent per 10.0 mL solution. Other important controlling factors were also explored.
Mohamed E. Mahmoud,Azza E.H. Abdou,Aziza K. Shehata,Heba M.A. Header,Ezzat A. Hamed 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.57 No.-
Removal of Congo red was completed in 5–20 s using microwave-enforced sorption (MES) as a sustainable technique. Nano-γ-Al2O3 was covalently bonded with 3-chloropropyltrimethoxysilane to produce γ-Al2O3-SiCl nanosorbent via microwave-assisted approach. Congo red extraction by γ-Al2O3 and γ-Al2O3-SiCl were found 58.42% and 69.41% and increased to 66.13% and 81.47%, respectively using 5 and 20 s of microwave heating. The percentage extraction of Congo red (30 mg L−1) by γ-Al2O3-SiCl was increased from 46.21% to 83.61% upon increasing the pH from 1.0 to 10.0. Other controlling conditions were investigated and optimized. Excellent recovery of Congo red from wastewater was established in 20 s.