Ayob, Hang Lipo Angelina (2025) Removal of lead, cadmium, and nickel ions from aqueous solution using okra and chilli seeds as adsorbent. Project Report. Universiti Sains Malaysia. (Submitted)
![[img]](http://eprints.usm.my/style/images/fileicons/application_pdf.png) |
PDF
Download (492kB) |
Abstract
Heavy metal contamination in water sources, especially lead (Pb), cadmium (Cd), and nickel (Ni), poses a significant threat to human health, due to their toxicity, persistence in the environment, and bioaccumulative nature. This study examined the effectiveness of okra (Abelmoschus esculentus), and chilli (Capsicum annuum L) seeds as adsorbents for these metals removal from aqueous solution. Several parameters, including initial concentration, adsorbent dosage, contact time, and temperature, were conducted for this adsorption experiment. Flame Atomic Absorption Spectroscopy (FAAS) was used to measure Pb, Cd, and Ni ion concentrations. Fourier Transform Infrared Spectroscopy (FTIR) was used to characterise biosorbents before and after treatment to discover functional groups involved in the adsorption process. The optimal parameters for Pb, Cd, and Ni removal using okra seeds were 1 ppm of initial concentration, 0.5 g adsorbent dosage, 20 minutes of contact time, and 30°C temperature, resulting in removal efficiencies of 84.9%, 87.3%, and 28%, respectively. For chili seeds, the same conditions with a 1.0 g adsorbent dosage resulted in 92% removal efficiency for Pb, 82.4% for Cd, and 37.4% for Ni. Based on the observations, Pb yielded the highest percentage removal efficiency compared to Cd and Ni, whereas Ni had the lowest for both adsorbent types. However, the findings indicated that both okra and chilli seeds have the potential to remove Pb, Cd, and Ni heavy metals from aqueous solution.
| Item Type: | Monograph (Project Report) |
|---|---|
| Uncontrolled Keywords: | lead, cadmium, nickel ions |
| Subjects: | R Medicine R Medicine > RA Public aspects of medicine > RA1001 Forensic Medicine. Medical jurisprudence. Legal medicine |
| Divisions: | Kampus Kesihatan (Health Campus) > Pusat Pengajian Sains Kesihatan (School of Health Sciences) > Monograph |
| Depositing User: | MUHAMMAD AKIF AIMAN AB SHUKOR |
| Date Deposited: | 27 Oct 2025 06:26 |
| Last Modified: | 18 Nov 2025 01:00 |
| URI: | http://eprints.usm.my/id/eprint/63079 |
Actions (login required)
 |
View Item |
