Cost effective natural microspheres for the removal of Pb from wastewater (E-pub Ahead of Print)
Nabila S. Ammar,
Walid El hotaby,
Hanan S. Ibrahim,
Sherif A. El-Khodary,
Medhat A. Ibrahim.
Background: Controlling aquatic pollution with natural resources
is a worldwide hot topic of research, according to its positive
Methods: Chitosan is cross linked with Sodium tripolyphosphate (TPP) to
form microsphere. Then microsphere could be effectively utilized to remove
Pb ion from water with a removal rate of 59.2% in 90 minutes. The
microsphere is further enhanced as dried water hyacinth is mixed with
chitosan to produce modified water hyacinth/chitosan microsphere up to 50%
water hyacinth. The crosslinking process for chitosan as well as
chitosan/water hyacinth is indicated with the help of Fourier Transform
Infrared Spectroscopy (FTIR). The interaction between chitosan and water
hyacinth is simulated with DFT using B3LYP/3-21g** model.
Results: The produced water hyacinth/chitosan microsphere shows removal of
Pb ions up to 90.6% in 180 minutes. The produced microsphere is cost
Conclusion: Applying two stages of removal one can obtain good results of
removal up to 90.6%. In this manner the cost effective water hyacinth cross
linked chitosan is produced effectively with good removal percentage.
Finally, the structure of water hyacinth is simulated with molecular
modeling at HF/STO-3G.
Keywords: Chitosan, Microsphere, FTIR, Water hyacinth and B3LYP/3-21g.
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