Synthesis, Characterization, and Application of TiO2–Magnetite/Chitosan Nanocomposite for Adsorptive Removal of Naphthalene from Aqueous Solutions

2022 ◽  
Author(s):  
Adel A. El-Zahhar ◽  
Abubakr M. Idris
Keyword(s):  
Aqueous Solutions ◽  
Adsorptive Removal

ADSORPTIVE REMOVAL OF PHOSPHATE FROM AQUEOUS SOLUTIONS BY WASTE SNAIL AND CLAM SHELLS

2015 ◽  
Vol 14 (5) ◽  
pp. 1053-1058 ◽  
Author(s):  
Ji Bing Xiong ◽  
Yong Qin ◽  
Ejazul Islam
Keyword(s):  
Aqueous Solutions ◽  
Adsorptive Removal

Facile Fabrication of Novel Magnetic ZIF-67 MOF@Aminated Chitosan Composite Beads for the Adsorptive Removal of Cr(VI) from Aqueous Solutions

2021 ◽  
pp. 118084
Author(s):  
Ahmed M. Omer ◽  
Eman M. Abd El-Monaem ◽  
Mona M. Abd El-Latif ◽  
Gehan M. El-Subruiti ◽  
Abdelazeem S. Eltaweil
Keyword(s):  
Aqueous Solutions ◽  
Adsorptive Removal ◽  
Composite Beads ◽  
Facile Fabrication ◽  
Chitosan Composite

scholarly journals Adsorptive Removal of Phosphate from Aqueous Solutions Using Low-Cost Volcanic Rocks: Kinetics and Equilibrium Approaches

Materials ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1312
Author(s):  
Dereje Tadesse Mekonnen ◽  
Esayas Alemayehu ◽  
Bernd Lennartz
Keyword(s):  
Aqueous Solutions ◽  
Low Income ◽  
Low Cost ◽  
Volcanic Rocks ◽  
Phosphate Removal ◽  
Phosphate Adsorption ◽  
Adsorptive Capacity ◽  
Batch Adsorption ◽  
Order Kinetic ◽  
Adsorptive Removal

The contamination of surface and groundwater with phosphate originating from industrial and household wastewater remains a serious environmental issue in low-income countries. Herein, phosphate removal from aqueous solutions was studied using low-cost volcanic rocks such as pumice (VPum) and scoria (VSco), obtained from the Ethiopian Great Rift Valley. Batch adsorption experiments were conducted using phosphate solutions with concentrations of 0.5 to 25 mg·L−1 to examine the adsorption kinetic as well as equilibrium conditions. The experimental adsorption data were tested by employing various equilibrium adsorption models, and the Freundlich and Dubinin-Radushkevich (D-R) isotherms best depicted the observations. The maximum phosphate adsorption capacities of VPum and VSco were calculated and found to be 294 mg·kg−1 and 169 mg·kg−1, respectively. A pseudo-second-order kinetic model best described the experimental data with a coefficient of correlation of R2 > 0.99 for both VPum and VSco; however, VPum showed a slightly better selectivity for phosphate removal than VSco. The presence of competitive anions markedly reduced the removal efficiency of phosphate from the aqueous solution. The adsorptive removal of phosphate was affected by competitive anions in the order: HCO3− >F− > SO4−2 > NO3− > Cl− for VPum and HCO3− > F− > Cl− > SO4−2 > NO3− for VSco. The results indicate that the readily available volcanic rocks have a good adsorptive capacity for phosphate and shall be considered in future studies as test materials for phosphate removal from water in technical-scale experiments.

Nickel hydroxide/polystyrene composites for adsorptive removal of Fe (III) and methylene blue from aqueous solutions

2021 ◽  
Vol 0 (0) ◽  
pp. 0-0
Author(s):  
Ahmed Bakry ◽  
Marzouk Adel ◽  
Ahmed El Naggar ◽  
maher Helal
Keyword(s):  
Methylene Blue ◽  
Aqueous Solutions ◽  
Nickel Hydroxide ◽  
Adsorptive Removal

Adsorptive removal of nickel and lead ions from aqueous solutions by poly (amidoamine) (PAMAM) dendrimers (G4)

2018 ◽  
Vol 12 ◽  
pp. 261-272 ◽  
Author(s):  
Roya Ebrahimi ◽  
Bagher Hayati ◽  
Behzad Shahmoradi ◽  
Reza Rezaee ◽  
Mahdi Safari ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Pamam Dendrimers ◽  
Lead Ions ◽  
Adsorptive Removal

Adsorptive removal of Pb(II) by magnetic activated carbon incorporated with amino groups from aqueous solutions

2016 ◽  
Vol 62 ◽  
pp. 247-258 ◽  
Author(s):  
Ruiqi Fu ◽  
Yu Liu ◽  
Zimo Lou ◽  
Zhuoxing Wang ◽  
Shams Ali Baig ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Aqueous Solutions ◽  
Amino Groups ◽  
Adsorptive Removal ◽  
Magnetic Activated Carbon
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