An investigation into the determination of heavy metals in water by flame atomic absorption spectroscopy and their removal by phosphorus- doped biochar.

Author
Ntuli, L.
Title
An investigation into the determination of heavy metals in water by flame atomic absorption spectroscopy and their removal by phosphorus- doped biochar.
Abstract
Contamination of water by heavy metals is of great concern as it results in health and environmental risks. The aim of this research was to determine concentrations of heavy metals in water samples using FAAS and find out on the effectiveness of PBC in removing the heavy metals. Water samples were collected, tested for the presence of arsenic, cadmium and lead. FAAS analysis showed the concentration of the heavy metals, and this gave valuable data on the quality of the water. PBC was made and adsorption capacity evaluated. Characterization of the biochar was done using a wide range of techniques to understand its physical and chemical properties. Parameters such as contact time, adsorbent dosage and initial metal concentration were optimized to achieve maximum removal. Adsorption kinetics and isotherms were analyzed to make the underlying mechanisms of the adsorption process clear. The results obtained proved that PBC is a very effective adsorbent of heavy metals in water and therefore can be recommended for use as a cost-effective and environmentally friendly adsorbent for the remediation of heavy metal-contaminated water.
Date
2024
Publisher
BUSE
Keywords
heavy metal
water
flame atomic absorption spectroscopy
Supervisor
Dr W. Munzeiwa
Item sets
Department of Science and Mathematical Foundations
Media
NTULI LIZZY

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