Zinc ion adsorption on montmorillonite-Al hydroxide polymer systems

2003 ◽  
Vol 54 (2) ◽  
pp. 347-355 ◽  
Author(s):  
R. P. T. Janssen ◽  
M. G. M. Bruggenwert ◽  
W. H. Van Riemsdijk
Keyword(s):  
Zinc Ion ◽  
Ion Adsorption ◽  
Polymer Systems

Modified Mesoporous Silicate MCM-41 for Zinc Ion Adsorption: Synthesis, Characterization and Its Adsorption Behavior

2009 ◽  
Vol 27 (11) ◽  
pp. 2171-2174 ◽  
Author(s):  
Hamid Sepehrian ◽  
Syed Waqif-husain ◽  
Farrokh Rakhshanderu ◽  
Leila Kamel
Keyword(s):  
Zinc Ion ◽  
Adsorption Behavior ◽  
Ion Adsorption ◽  
Mesoporous Silicate ◽  
Mcm 41

scholarly journals Zinc ion adsorption on carbon nanotubes in an aqueous solution

2012 ◽  
Vol 14 (3) ◽  
pp. 29-37 ◽  
Author(s):  
A. Ansari ◽  
M.A. Mehrabian ◽  
H. Hashemipour
Keyword(s):  
Carbon Nanotubes ◽  
Molecular Dynamics ◽  
Adsorption Process ◽  
Electrostatic Force ◽  
Zinc Ion ◽  
Dynamics Simulation ◽  
Ion Adsorption ◽  
Zinc Ions ◽  
Interaction Energies ◽  
Water Layers

The literature devoted to numerical investigation of adsorption of heavy metal ions on carbon nanotubes is scarce. In this paper molecular dynamics is used to simulate the adsorption process and to investigate the effect of the infl uencing parameters on the rate of adsorption. The predictions of the molecular dynamics simulation show that the adsorption process is improved with increasing the temperature, pH of solution, the mass of nanotubes, and surface modifi cation of CNT using hydroxyl and carboxyl functional groups. The results predicted by the model are compared with the experimental results available in the literature; the close agreement validates the accuracy of the predictions. This study reveals that the water layers around the carbon nanotubes and the interaction energies play important roles in the adsorption process. The study also shows that electrostatic force controls the attraction of zinc ions on the nanotube sidewall.

scholarly journals STUDI SERAPAN ION SENG(II) OLEH BIOMASSA MIKROALGA (Tetraselmis chuii)

2015 ◽  
Vol 2 (2) ◽  
pp. 107
Author(s):  
Bahrizal ◽  
Rahadian Z
Keyword(s):  
Metal Ion ◽  
Absorption Spectrometry ◽  
Zinc Ion ◽  
Ion Concentration ◽  
Ion Adsorption ◽  
Metal Ion Adsorption ◽  
Tetraselmis Chuii ◽  
Optimum Ph ◽  
The Difference ◽  
Varied Concentration

ABSTRACT In the present work, the process of zinc-ion adsorption by T. chuii biomass have been investigated. This investigation intend to determinate capacity of adsorption the biomass for zinc-ion in water. A weight of 100 mg biomass was put into 6 ppm of the metal-ion solution whose pH varied from 5.0 to 7.0. Then, these solutions were stirred for 30 minutes. After filtering, the metal-ion concentration in the filtrate was determined by atomic absorption spectrometry. The amount of ion adsorbed by the biomass was taken as the difference between the initial and final concentration of the solution. Further, the same method was carried out to the varied concentration. The result showed, the optimum pH for metal-ion adsorption by the biomass is 5.5, having adsorption value 1.106 mg/g. Capacity of zinc-ion adsorption was obtained by varied concentration, yielded value of 3.557 mg/g.   Keywords : T. chuii, biomass, adsorption, spectrometry   

Lead ion adsorption on montmorillonite?Al hydroxide polymer systems

2007 ◽  
Vol 58 (5) ◽  
pp. 1136-1144 ◽  
Author(s):  
R. P. T. Janssen ◽  
M. G. M. Bruggenwert ◽  
G. van Dijk ◽  
W. H. van Riemsdijk
Keyword(s):  
Lead Ion ◽  
Ion Adsorption ◽  
Polymer Systems

scholarly journals A Comparative Study of Copper and Zinc Ion Adsorption on to Activated and Non-activated Date-pits

2002 ◽  
Vol 20 (4) ◽  
pp. 319-335 ◽  
Author(s):  
Fawzi Banat ◽  
Sameer Al-Asheh ◽  
Deaa Al-Rousan
Keyword(s):  
Metal Ions ◽  
Activated Carbons ◽  
Ph Value ◽  
Freundlich Isotherm ◽  
Zinc Ion ◽  
Ion Adsorption ◽  
Chemical Pretreatment ◽  
Adsorption Capacities ◽  
Adsorption Data ◽  
Date Pits

Date-pits (an agricultural by-product available commercially) were utilized, with and without activation, as an adsorbent for the removal of Zn2+ and Cu2+ ions from aqueous solutions. Activated carbons were prepared from date-pits by carbon dioxide activation at 700°C. The effects of contact time, pH, temperature and the adsorbent concentration on the removal of Zn2+ and Cu2+ ions were studied. The Freundlich isotherm model described the equilibrium adsorption data. Non-activated date-pits exhibited higher Zn2+ and Cu2+ ion uptake than activated date-pits. The uptake of Cu2+ ions by both activated and non-activated date-pits was higher than the uptake of Zn2+ ions. The uptake of both metal ions increased on increasing the pH value of the system from 3.5 to 5.0 as well as on decreasing the temperature from 50°C to 25°C. Adsorption capacities for the non-activated date-pits towards Cu2+ and Zn2+ ions as high as 0.15 mmol/g and 0.09 mmol/g, respectively, were observed. This study demonstrated that date-pits without any physical or chemical pretreatment could be used as an effective adsorbent for the treatment of waters containing heavy metal ions such as Zn2+ and Cu2+.

Boosting Zn-Ion Adsorption in Cross-Linked N/P Co-Incorporated Porous Carbon Nanosheets for Zinc-Ion Hybrid Capacitor

2021 ◽  
Author(s):  
Hanfang Zhang ◽  
Zhensheng Chen ◽  
Yihe Zhang ◽  
Zequn Ma ◽  
Yingge Zhang ◽  
...  
Keyword(s):  
Energy Density ◽  
Zinc Ion ◽  
Low Energy ◽  
Ion Adsorption ◽  
Cyclic Stability ◽  
Energy Storage Devices ◽  
Carbon Nanosheets ◽  
Storage Devices ◽  
New Type ◽  
Hybrid Capacitors

Zinc-ion hybrid capacitors (ZHC) combining many advantages of supercapacitors and batteries, are promising new type of energy storage devices. However, the bottleneck of low energy density and inferior cyclic stability...

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