Effects of stereochemistry and alternation on the adsorption properties of surface-active cis- and trans-2-n-alkyl-5-hydroxy-1,3-dioxanes

Langmuir ◽  
1991 ◽  
Vol 7 (8) ◽  
pp. 1765-1769 ◽  
Author(s):  
Klaus. Lunkenheimer ◽  
Bogdan. Burczyk ◽  
Andrzej. Piasecki ◽  
Rolf. Hirte
Keyword(s):  
Adsorption Properties ◽  
Surface Active ◽  
Cis And Trans

scholarly journals Adsorption of inorganic anionic contaminants on surfactant modified minerals

2003 ◽  
Vol 68 (11) ◽  
pp. 833-841 ◽  
Author(s):  
Aleksandra Vujakovic ◽  
Aleksandra Dakovic ◽  
Jovan Lemic ◽  
Ana Radosavljevic-Mihajlovic ◽  
Magdalena Tomasevic-Canovic
Keyword(s):  
Primary Amine ◽  
Acid Treatment ◽  
Diatomaceous Earth ◽  
Adsorption Properties ◽  
Second Step ◽  
Zeolite Surface ◽  
Anion Adsorption ◽  
Surface Active ◽  
Alkyl Ammonium ◽  
Efficient Adsorbent

Organo-mineral complexes were obtained by treatment of aluminosilicate minerals (zeolite, bentonite and diatomaceous earth) with a primary amine (oleylamine) and an alkyl ammonium salt (stearyldimethylbenzyl ammonium chloride). The modification of the zeolite surface was carried out in two steps. The first step was treatment of the zeolite with 2M HCl. This acid treatment of the zeolite increased its affinity for neutral molecules such as surface-active amines. The second step of the modification was the adsorption of oleylamine on the acid treated zeolite. Four types of organo-mineral complexes were prepared and their anion adsorption properties were compared to those of organo-zeolite. The adsorption of sulphate bichromate and dihydrogenphosphate anions on the organo-mineral complexes was investigated. The anion adsorption measurements showed that the most efficient adsorbent for anion water pollutants was the primary amine modified H+-form zeolite.

Sign in / Sign up

Export Citation Format

Share Document