Adsorption of Uranyl Ions from Seawater Using Chemically Modified Sago Hampas
Uranium is a crucial resource for nuclear energy; however, its terrestrial reserves are limited, and conventional mining methods pose significant environmental risks. Extracting uranium from seawater presents a sustainable alternative, but the low concentration of uranyl ions and competing ion...
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| Format: | Thesis |
| Language: | English English |
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Universiti Malaysia Sarawak
2025
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| Online Access: | http://ir.unimas.my/id/eprint/48508/ |
| Abstract | Abstract here |
| Summary: | Uranium is a crucial resource for nuclear energy; however, its terrestrial reserves are limited,
and conventional mining methods pose significant environmental risks. Extracting uranium
from seawater presents a sustainable alternative, but the low concentration of uranyl ions
and competing ions in seawater create challenges. Raw sago hampas (RSH) was grafted with
oxygen-containing functional group through a functionalization process to form esterified
sago hampas (ESH) for U(VI) adsorption and evaluated using adsorption kinetics, isotherm,
and thermodynamics studies. Adsorption kinetics studies show that both adsorbents follow
pseudo-second-order model while isotherm studies conclude that both adsorption processes
fitted Sips isotherm model. Thermodynamic studies indicate both adsorption processes
exhibited by the RSH and ESH were endothermic but spontaneous and non-spontaneous
respectively. Strongs acids are tested to be the best desorption agents to release U(VI) from
surfaces’ of RSH and ESH. The findings of this study contribute to the development of
sustainable uranium extraction methods and offer an environmentally friendly approach for
biosorption in nuclear resource management. |
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