ORIGINAL RESEARCH
Removal of Pb(II) Metal Ions from Aqueous
Solutions Using Chitosan-Vanillin Derivatives
of Chelating Polymers
| 1 | Department of Chemistry, College of Science, Imam Abdulrahman Bin Faisal University,
Dammam, Saudi Arabia |
| 2 | Depertment of Chemistry and Chemical Technology, Faculty of Science and Technology,
Al-Quds University, Jerusalem, Palestine |
CORRESPONDING AUTHOR
Fadi Alakhras
Imam Abdulrahman Bin Faisal University, P.O.Box: 1982 Dammam 31441 (Al Rayan Dist.), Saudi Arabia, 31441 Dammam, Saudi Arabia
Imam Abdulrahman Bin Faisal University, P.O.Box: 1982 Dammam 31441 (Al Rayan Dist.), Saudi Arabia, 31441 Dammam, Saudi Arabia
Online publication date: 2018-12-12
Publication date: 2019-02-18
Submission date: 2017-12-31
Final revision date: 2018-03-25
Acceptance date: 2018-03-26
Pol. J. Environ. Stud. 2019;28(3):1523–1534
KEYWORDS
TOPICS
Water treatmentBiological and chemical treatmentInorganic pollutantsPollutionWastewater engineeringHeavy metals contamination of water
ABSTRACT
Our study investigates the removal of Pb(II) ions found in aqueous solutions using
chitosan-vanillin polymeric material. The effects of pH, agitation time, adsorbent mass, and initial
amount of studied ion on the chelation process have been carried out using batch experiments.
The quantity of residual ions has been estimated via atomic absorption spectrometry. The polymers
are characterized using infrared spectroscopy, TGA, SEM, and BET surface area.
The highest removal of Pb(II) ions achieved by polymers I and II was at pH 6. The Langmuir isotherm worked as the greatest explanation for the experimental outcome with highest chelation capability equal to 23.3 mg g-1 for polymer I and 66.23 mg g-1 for polymer II. Kinetic studies revealed that chemisorption was the rate-determining step, whereas the uptake was natural and endothermic.
The highest removal of Pb(II) ions achieved by polymers I and II was at pH 6. The Langmuir isotherm worked as the greatest explanation for the experimental outcome with highest chelation capability equal to 23.3 mg g-1 for polymer I and 66.23 mg g-1 for polymer II. Kinetic studies revealed that chemisorption was the rate-determining step, whereas the uptake was natural and endothermic.
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