Adsorption kinetics and adsorption isotherm studies of chromium from aqueous solutions by HPAM-chitosan gel beads

2012 ◽  
Vol 45 (1-3) ◽  
pp. 222-228 ◽  
Author(s):  
Wei Kuang ◽  
Yebang Tan ◽  
Lihong Fu
Keyword(s):  
Adsorption Isotherm ◽  
Aqueous Solutions ◽  
Adsorption Kinetics ◽  
Gel Beads ◽  
Chitosan Gel

Investigating the equilibrium and adsorption kinetics for the removal of Ni (II) ions from aqueous solutions using adsorbents prepared from the modified waste newspapers: A low-cost and available adsorbent

2019 ◽  
Vol 146 ◽  
pp. 1043-1053 ◽  
Author(s):  
Mohammad Hadi Dehghani ◽  
Mohammad Sarmadi ◽  
Mohammad Reza Alipour ◽  
Daryoush Sanaei ◽  
Hamid Abdolmaleki ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Adsorption Kinetics ◽  
Low Cost

scholarly journals Removal of As3+, As5+, Sb3+, and Hg2+ ions from aqueous solutions by pure and co-precipitated akaganeite nanoparticles: adsorption kinetics studies

RSC Advances ◽  
2020 ◽  
Vol 10 (70) ◽  
pp. 42688-42698
Author(s):  
Verónica Villacorta ◽  
César Augusto Barrero ◽  
María-Belén Turrión ◽  
Francisco Lafuente ◽  
Jean-Marc Greneche ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Adsorption Kinetics ◽  
Kinetics Studies

Morphologically-modified akaganeite nanoparticles adsorbed As3+, As5+, Sb3+ and Hg2+. Sb3+ was the better adsorbed pollutant, whereas Hg2+ was the least.

scholarly journals Equilibrium modeling of mono and binary sorption of Cu(II) and Zn(II) onto chitosan gel beads

2016 ◽  
Vol 37 (4) ◽  
pp. 485-501 ◽  
Author(s):  
Józef Nastaj ◽  
Małgorzata Tuligłowicz ◽  
Konrad Witkiewicz
Keyword(s):  
Metal Ion ◽  
Ph Value ◽  
Experimental Studies ◽  
Process Conditions ◽  
Optimal Process ◽  
Sorption Data ◽  
Gel Beads ◽  
Two Component ◽  
Equilibrium Data ◽  
Chitosan Gel

Abstract The objective of the work are in-depth experimental studies of Cu(II) and Zn(II) ion removal on chitosan gel beads from both one- and two-component water solutions at the temperature of 303 K. The optimal process conditions such as: pH value, dose of sorbent and contact time were determined. Based on the optimal process conditions, equilibrium and kinetic studies were carried out. The maximum sorption capacities equaled: 191.25 mg/g and 142.88 mg/g for Cu(II) and Zn(II) ions respectively, when the sorbent dose was 10 g/L and the pH of a solution was 5.0 for both heavy metal ions. One-component sorption equilibrium data were successfully presented for six of the most useful three-parameter equilibrium models: Langmuir-Freundlich, Redlich-Peterson, Sips, Koble-Corrigan, Hill and Toth. Extended forms of Langmuir-Freundlich, Koble-Corrigan and Sips models were also well fitted to the two-component equilibrium data obtained for different ratios of concentrations of Cu(II) and Zn(II) ions (1:1, 1:2, 2:1). Experimental sorption data were described by two kinetic models of the pseudo-first and pseudo-second order. Furthermore, an attempt to explain the mechanisms of the divalent metal ion sorption process on chitosan gel beads was undertaken.

scholarly journals Adsorption Study for Trifluralin on Iraqi ? –Alumina

2012 ◽  
Vol 9 (1) ◽  
pp. 153-159 ◽  
Author(s):  
Baghdad Science Journal
Keyword(s):  
Adsorption Isotherm ◽  
Aqueous Solutions ◽  
Contact Time ◽  
Adsorption Process ◽  
Kinetic Equations ◽  
Adsorption Study ◽  
Adsorption Capacities ◽  
Experimental Parameters ◽  
Freundlich Adsorption Isotherm ◽  
Equilibrium Adsorption Isotherm

Equilibrium adsorption isotherm for the removal of trifluralin from aqueous solutions using ? –alumina clay has been studied. The result shows that the isotherms were S3 according Giels classification. The effects of various experimental parameters such as contact time, adsorbent dosage, effect of pH and temperature of trifluralin on the adsorption capacities have been investigated. The adsorption isotherms were obtained by obeying freundlich adsorption isotherm with (R2 = 0.91249-0.8149). The thermodynamic parameters have been calculated by using the adsorption process at five different temperature, the values of ?H, ?G and ?S were (_1.0625) kj. mol-1, (7.628 - 7.831) kj.mol-1 and (_2.7966 - _2.9162) kg. k-1. mol-1 respectively. The kinetic study of adsorption process has been studied depending on three kinetic equations: 1- Allergen equation 2- Morris –weber eguation 3- Reichenberg eguation. In general, the result shows the isotherm were on ?- alumina according to Giels classification.? –alumina and thermodynamic

Adsorption kinetics and mechanism of maxilon blue 5G dye on sepiolite from aqueous solutions

2008 ◽  
Vol 139 (2) ◽  
pp. 213-223 ◽  
Author(s):  
M. Alkan ◽  
M. Doğan ◽  
Y. Turhan ◽  
Ö. Demirbaş ◽  
P. Turan
Keyword(s):  
Aqueous Solutions ◽  
Adsorption Kinetics ◽  
Kinetics And Mechanism

Adsorption kinetics of maxilon blue GRL onto sepiolite from aqueous solutions

2006 ◽  
Vol 124 (1-3) ◽  
pp. 89-101 ◽  
Author(s):  
Mehmet Doğan ◽  
Mahir Alkan ◽  
Özkan Demirbaş ◽  
Yasemin Özdemir ◽  
Cengiz Özmetin
Keyword(s):  
Aqueous Solutions ◽  
Adsorption Kinetics ◽  
Kinetics Of
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