Phase Diagrams of Aqueous Solutions of Polycarboxylates in the Presence of Divalent Cations

1994 ◽  
Vol 27 (22) ◽  
pp. 6594-6602 ◽  
Author(s):  
Monique A. V. Axelos ◽  
Michele M. Mestdagh ◽  
Jeanne Francois
Author(s):  
Julia L. Roskam ◽  
Kristen L. Nowak ◽  
Karl T. Taylor ◽  
Samuel R. Rendler ◽  
Keith D. Beyer

2009 ◽  
Vol 95 (3) ◽  
pp. 033108 ◽  
Author(s):  
P. Moreau ◽  
J. Dehmoune ◽  
J.-B. Salmon ◽  
J. Leng

Processes ◽  
2020 ◽  
Vol 8 (10) ◽  
pp. 1229
Author(s):  
Erick Aranda-García ◽  
Griselda Ma. Chávez-Camarillo ◽  
Eliseo Cristiani-Urbina

This study investigated the effect of ionic strength and background electrolytes on the biosorption of Ni2+ from aqueous solutions by the acorn shell of Quercus crassipes Humb. & Bonpl. (QCS). A NaCl ionic strength of 0.2 mM was established to have no effect on the Ni2+ biosorption and the biosorption capacity of the heavy metal decreased as the ionic strength increased from 2 to 2000 mM. The background electrolytes (KCl, NaNO3, Na2SO4, CaCl2, MgSO4, and MgCl2) had no adverse effects on the biosorption of Ni2+ at a concentration of 0.2 mM. However, at background electrolyte concentrations of 2 and 20 mM, divalent cations (Ca2+ and Mg2+) had greater negative effects on the biosorption of Ni2+ compared to the monovalent cations (Na+ and K+). Additionally, the SO42− and Cl− anions affected the biosorption of Ni2+. The fractional power, Elovich, and pseudo-second order models represented the kinetic processes of the biosorption of Ni2+ adequately. The results show that QCS can be a promising and low-cost biosorbent for removing Ni2+ ions from aqueous solutions containing various types of impurities with different concentrations.


1978 ◽  
Vol 88 (1) ◽  
pp. 79-84 ◽  
Author(s):  
Isamu Uchida ◽  
Haruo Akahoshi ◽  
Shinobu Toshima

Sign in / Sign up

Export Citation Format

Share Document