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Removal of lead, cadmium, and chromium ions from aqueous solutions using iron (III) oxide

Lead (Pb), cadmium (Cd), and chromium (Cr) have been classified as heavy metals that have polluted the environment, mainly water sources. Therefore, the aim of this present study is to remove heavy metals, specifically Pb, Cd, and Cr ions from aqueous solutions using iron(III) oxide while, also cont...

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Main Author: Munusamy, Shiva Shanthini
Format: Thesis
Language:English
Published: 2022
Subjects:
TD419-428 Water pollution
Online Access:http://eprints.usm.my/58529/1/SHIVA%20SHANTHINI%20AP%20MUNUSAMY-24%20pages.pdf
http://eprints.usm.my/58529/
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spelling my.usm.eprints.58529 http://eprints.usm.my/58529/ Removal of lead, cadmium, and chromium ions from aqueous solutions using iron (III) oxide Munusamy, Shiva Shanthini TD419-428 Water pollution Lead (Pb), cadmium (Cd), and chromium (Cr) have been classified as heavy metals that have polluted the environment, mainly water sources. Therefore, the aim of this present study is to remove heavy metals, specifically Pb, Cd, and Cr ions from aqueous solutions using iron(III) oxide while, also contributing to the reduction of waste products that might ultimately cause environmental pollution. This study was designed to adopt adsorption technique to remove Pb, Cd, and Cr ions from the aqueous solutions with the help of low-cost adsorbent, iron(III) oxide, Fe2O3. The concentrations of Pb, Cd, and Cr ions in the aqueous solutions were then detected by Flame Atomic Absorption Spectroscopy (FAAS) instrument. Various parameters such as calcination temperatures of adsorbents, adsorbent dosages, and contact time were used to carry out the removal process of Pb ions. The effects of adsorption on different types of heavy metals, Cd and Cr as well as repeatability of adsorbents were also studied in this research. The FTIR findings revealed that certain heavy metals were more likely to bind to these adsorbents due to the presence of crucial functional groups such as hydroxyl (-OH) and carbonyl (C=O). From this study, the optimum removal conditions were calcination temperature of adsorbents of 400ºC, 0.2 g dose of adsorbent, and 60 minutes of contact time. The results showed that Fe2O3 adsorbents removed 0.912 mg/L, 0.540 mg/L, and 0.489 mg/L of Pb, Cd, and Cr ions from the aqueous solutions, suggesting that it was more efficient towards the removal of Pb ions. Repeatability study demonstrated that Fe2O3 adsorbent can be reused for three consecutive periods and thus, has a great potential for eliminating heavy metals from aqueous solutions. Hence, this study showed that the adsorption technique using Fe2O3 adsorbents was capable of removing Pb, Cd, and Cr ions from aqueous solutions. The reduction of these heavy metals' concentration by adsorbents can also assist to preserve good water quality that does not exceed the permissible limit by WHO. 2022-09 Thesis NonPeerReviewed application/pdf en http://eprints.usm.my/58529/1/SHIVA%20SHANTHINI%20AP%20MUNUSAMY-24%20pages.pdf Munusamy, Shiva Shanthini (2022) Removal of lead, cadmium, and chromium ions from aqueous solutions using iron (III) oxide. Masters thesis, Universiti Sains Malaysia.
institution Universiti Sains Malaysia
building Hamzah Sendut Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Sains Malaysia
content_source USM Institutional Repository
url_provider http://eprints.usm.my/
language English
topic TD419-428 Water pollution
spellingShingle TD419-428 Water pollution
Munusamy, Shiva Shanthini
Removal of lead, cadmium, and chromium ions from aqueous solutions using iron (III) oxide
description Lead (Pb), cadmium (Cd), and chromium (Cr) have been classified as heavy metals that have polluted the environment, mainly water sources. Therefore, the aim of this present study is to remove heavy metals, specifically Pb, Cd, and Cr ions from aqueous solutions using iron(III) oxide while, also contributing to the reduction of waste products that might ultimately cause environmental pollution. This study was designed to adopt adsorption technique to remove Pb, Cd, and Cr ions from the aqueous solutions with the help of low-cost adsorbent, iron(III) oxide, Fe2O3. The concentrations of Pb, Cd, and Cr ions in the aqueous solutions were then detected by Flame Atomic Absorption Spectroscopy (FAAS) instrument. Various parameters such as calcination temperatures of adsorbents, adsorbent dosages, and contact time were used to carry out the removal process of Pb ions. The effects of adsorption on different types of heavy metals, Cd and Cr as well as repeatability of adsorbents were also studied in this research. The FTIR findings revealed that certain heavy metals were more likely to bind to these adsorbents due to the presence of crucial functional groups such as hydroxyl (-OH) and carbonyl (C=O). From this study, the optimum removal conditions were calcination temperature of adsorbents of 400ºC, 0.2 g dose of adsorbent, and 60 minutes of contact time. The results showed that Fe2O3 adsorbents removed 0.912 mg/L, 0.540 mg/L, and 0.489 mg/L of Pb, Cd, and Cr ions from the aqueous solutions, suggesting that it was more efficient towards the removal of Pb ions. Repeatability study demonstrated that Fe2O3 adsorbent can be reused for three consecutive periods and thus, has a great potential for eliminating heavy metals from aqueous solutions. Hence, this study showed that the adsorption technique using Fe2O3 adsorbents was capable of removing Pb, Cd, and Cr ions from aqueous solutions. The reduction of these heavy metals' concentration by adsorbents can also assist to preserve good water quality that does not exceed the permissible limit by WHO.
format Thesis
author Munusamy, Shiva Shanthini
author_facet Munusamy, Shiva Shanthini
author_sort Munusamy, Shiva Shanthini
title Removal of lead, cadmium, and chromium ions from aqueous solutions using iron (III) oxide
title_short Removal of lead, cadmium, and chromium ions from aqueous solutions using iron (III) oxide
title_full Removal of lead, cadmium, and chromium ions from aqueous solutions using iron (III) oxide
title_fullStr Removal of lead, cadmium, and chromium ions from aqueous solutions using iron (III) oxide
title_full_unstemmed Removal of lead, cadmium, and chromium ions from aqueous solutions using iron (III) oxide
title_sort removal of lead, cadmium, and chromium ions from aqueous solutions using iron (iii) oxide
publishDate 2022
url http://eprints.usm.my/58529/1/SHIVA%20SHANTHINI%20AP%20MUNUSAMY-24%20pages.pdf
http://eprints.usm.my/58529/
_version_ 1768007895837835264
score 13.222552

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