ORIGINAL RESEARCH
Valorisation and Modification of Saharan Clay
for Removal of Cu(II), Ni(II), Co(II) and Cd(II)
from Aqueous Solutions
| 1 | Department of Industrial Engineering, Faculty of Technology, University of Tlemcen, Algeria |
| 2 | Laboratory of Studies and Research on Material (LERMAB), University of Lorraine, Nancy, France |
CORRESPONDING AUTHOR
Bahia Meroufel
Departement of Industrial Engineering, Faculty of Technology, University of Tlemcen, Algeria., n°7 Cité Ancienne Imama-mansourah, 13000 Tlemcen, Algeria
Departement of Industrial Engineering, Faculty of Technology, University of Tlemcen, Algeria., n°7 Cité Ancienne Imama-mansourah, 13000 Tlemcen, Algeria
Submission date: 2018-09-08
Final revision date: 2018-10-24
Acceptance date: 2018-11-25
Online publication date: 2019-09-10
Publication date: 2020-01-16
Pol. J. Environ. Stud. 2020;29(2):1287–1292
KEYWORDS
TOPICS
Physicochemical parametersToxic substancesInorganic pollutantsSpectrophotometricPollutionWaste purificationHeavy metals contamination of water
ABSTRACT
The organosilane-modified Saharan kaolin (KS) was prepared and tested as an adsorbent for Cu(II),
Ni(II), Co(II) and Cd(II) removal from aqueous solution in comparison with original Saharan kaolin
(K). Characterization of modified clay material and original clay was carried out by different methods
(XRD, FTIR, TGA and SEM) in order to establish the link between synthesis, structures and properties.
The hydrophilic properties of the clay surface have been modified, but not turned into hydrophobic ones.
The graft has indeed a polar amine group and the chain length is too short to present an important
hydrophobic character. The adsorption of heavy metal ions onto APTES-modified kaolin showed greater
efficiency than original kaolin. The adsorption of metal ions by the original kaolin is dominated by the
cation exchange phenomenon with a preferential order of selectivity: Cu(II)>Ni(II)>Co(II)>Cd(II), while
adsorption on KS is mainly dominated by attraction of the chelating group of the amine in the same
order of selectivity. This new hybrid organic-inorganic material may be a good alternative for separation
and preconcentration of heavy metal ions.
RELATED ARTICLE
We process personal data collected when visiting the website. The function of obtaining information about users and their behavior is carried out by voluntarily entered information in forms and saving cookies in end devices. Data, including cookies, are used to provide services, improve the user experience and to analyze the traffic in accordance with the Privacy policy. Data are also collected and processed by Google Analytics tool (more).
You can change cookies settings in your browser. Restricted use of cookies in the browser configuration may affect some functionalities of the website.
You can change cookies settings in your browser. Restricted use of cookies in the browser configuration may affect some functionalities of the website.