ORIGINAL RESEARCH
Efficiency of Aluminium Pillared Montmorillonite
Clays of Pakistani Origin (Peshawar And Samwal)
on the Adsorption of Chromium Ions
in Aqueous Solutions
| 1 | College of Earth and Environmental Sciences, University of the Punjab, Lahore, Pakistan |
| 2 | Department of Environmental Science and Policy, Lahore School of Economics, Pakistan |
CORRESPONDING AUTHOR
Submission date: 2020-03-12
Final revision date: 2020-06-25
Acceptance date: 2020-06-27
Online publication date: 2020-10-13
Publication date: 2021-01-20
Pol. J. Environ. Stud. 2021;30(2):1039–1050
KEYWORDS
adsorptionaluminium pillared inter layered clays (Al-PILC)chromium removalPakistani bentonite claywastewater
TOPICS
Quality controlWater treatmentToxic substancesUtilization and managementBiological and chemical treatmentReuse of wastewatersInorganic pollutantsEnvironmental managementPollutionWater monitoringWaste purificationHeavy metalsHeavy metals contamination of waterMetals toxicityHazards to human healthDetermination method
ABSTRACT
Adsorption of Chromium ions on Aluminium Pillared Interlayered Clays (Al-PILC) prepared
from Bentonites originating from Pakistani sources of Peshawar and Samwal was investigated
in a batch system. The raw clays were purified and chemically converted into Na-Bentonite.
Pillaring procedure was performed on Na-Bentonite with pillaring oligomer solution to prepare
Al-PILC. Both Raw and Al-PILC forms of Peshawar and Samwal clays were characterized by X-Ray
Diffraction and Brunauer, Emmett, and Teller (BET) analysis before conducting adsorption studies.
The effects of factors like adsorbent quantity, the concentration of adsorbate, pH and temperature were
analyzed. Highly efficient adsorption of chromium ions in solution was achieved by Al-PILC. Based
on the overall results of percentage removal of chromium ions in solution and in view of efficiency,
simplicity, low cost, and reliability, Al-PILCs can provide a promising intervention for the elimination
and control of environmental hazards associated with chromium pollution generated from leather
industries in Pakistan.
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