Removal of Heavy Metals Ions from Aqueous Solution using Different Pretreatment Techniques of Corn Cob
Water pollution has been a global issue and Malaysian waters are of no exception. Traces of heavy metals have been found in rivers and water sources from industrial and agricultural run-off, apart from improper waste disposal. Hence, this study proposes the application of corn cob to remove Chrom...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English English |
| Published: |
INTI International University
2022
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| Subjects: | |
| Online Access: | http://eprints.intimal.edu.my/1577/ http://eprints.intimal.edu.my/1577/1/joit2022_05r.pdf http://eprints.intimal.edu.my/1577/2/290 |
| Summary: | Water pollution has been a global issue and Malaysian waters are of no exception.
Traces of heavy metals have been found in rivers and water sources from industrial and
agricultural run-off, apart from improper waste disposal. Hence, this study proposes the
application of corn cob to remove Chromium (Cr), Manganese (Mn), and Lead (Pb) metal
ions from aqueous solution by different pre-treatment techniques using vinegar and
hydrochloric acid (HCl). The experiment was conducted in a water filtration apparatus
where each heavy metal of interest were treated separately using the pre-treated corn cob.
The samples of metal ions were tested by using Inductively Coupled Plasma-Atomic
Emission Spectrometry (ICP-AES), which was later analysed and compared by evaluating
the percentage removal of each metal ions, adsorption capacity, and adsorption isotherms.
For Cr, Mn, and Pb removal using HCl-treated corn cob, the maximum percentage removal
is 58.75%, 98.68%, and 77.18% respectively whilst the maximum percentage removal for
Cr, Mn, and Pb using vinegar-treated corn cob is 71.50%, 98.00%, and 74.25%. Further
analysis on the equilibrium data shows that this experiment favoured the Freundlich
isotherm, as seen from the R2 values greater than 0.9 for each adsorption experiment. Hence,
both corn cob pre-treated using HCl and vinegar was proven to be effective in the removal
of Cr, Mn, and Pb ions. |
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