Theoretical modeling of cationic surfactants aggregation at the silica/aqueous solution interface: Effects of pH and ionic strength

2002 ◽  
Vol 4 (23) ◽  
pp. 5846-5855 ◽  
Author(s):  
Mateusz Drach ◽  
Anna Andrzejewska ◽  
Jolanta Narkiewicz-Michałek ◽  
Władysław Rudziński ◽  
Luuk K. Koopal
Keyword(s):  
Aqueous Solution ◽  
Ionic Strength ◽  
Cationic Surfactants ◽  
Theoretical Modeling ◽  
Solution Interface ◽  
Effects Of Ph ◽  
Interface Effects

Adsorption Characteristics of Spiropyran-Modified Cationic Surfactants at the Silica/Aqueous Solution Interface

Langmuir ◽  
2010 ◽  
Vol 26 (12) ◽  
pp. 9283-9288 ◽  
Author(s):  
Kenichi Sakai ◽  
Yuki Imaizumi ◽  
Takakuni Oguchi ◽  
Hideki Sakai ◽  
Masahiko Abe
Keyword(s):  
Aqueous Solution ◽  
Cationic Surfactants ◽  
Adsorption Characteristics ◽  
Solution Interface

Adsorption of humic acid from aqueous solution by hematite: effects of pH and ionic strength

2014 ◽  
Vol 73 (8) ◽  
pp. 4011-4017 ◽  
Author(s):  
Xiaopeng Qin ◽  
Fei Liu ◽  
Guangcai Wang ◽  
Guoxin Huang
Keyword(s):  
Aqueous Solution ◽  
Humic Acid ◽  
Ionic Strength ◽  
Effects Of Ph

Adsorption of Pb(II) on palygorskite from aqueous solution: Effects of pH, ionic strength and temperature

2009 ◽  
Vol 45 (3) ◽  
pp. 111-116 ◽  
Author(s):  
Qiaohui Fan ◽  
Zhan Li ◽  
Haogui Zhao ◽  
Zehong Jia ◽  
Junzheng Xu ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Ionic Strength ◽  
Effects Of Ph

Effects of pH and Anion Species on Cr(VI) Removal by Magnetite

2011 ◽  
Vol 233-235 ◽  
pp. 1055-1058 ◽  
Author(s):  
Hai Tao Ren ◽  
Shao Yi Jia ◽  
Yong Liu ◽  
Song Hai Wu ◽  
Yong Xu Xing ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Ionic Strength ◽  
Hexavalent Chromium ◽  
Electrostatic Interactions ◽  
Batch Experiments ◽  
Critical Factors ◽  
Initial Concentration ◽  
Effects Of Ph ◽  
Anion Species

Magnetite was prepared to remove poisonous hexavalent chromium [Cr(VI)] from aqueous solution. Batch experiments were conducted to measure the effects on removal of Cr(VI) of different parameters such as ionic strength, pH, and initial concentration. Results demonstrated that the removal of Cr(VI) on magnetite was decreased with the increase of pH in the range of 3.4-5.0, but independent of ionic strength. The removal percentage of Cr(VI) also decreased with the increase of Cr(VI) concentration in the range of 50-200 mg/L. At pH 3.5 and 5.0, the presence of SO42−retarded the removal of Cr(VI) via electrostatic interactions and/or competition for surfaces sites on magnetite. The pH of the medium and presence of anion species were critical factors in the removal of Cr(VI) from aqueous solution.

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