Publication Date: 2023/12/15
Abstract: The study aimed to modify Bentonite Clay into a composite adsorbent (BENR 2:8) through Mg/Fe pillaring. The modification process involved the removal of residual cationic species from the Bentonite Clay, which increased its surface negative charge. This, in turn, facilitated faster and higher adsorption of BENR 2:8 compared to raw, un-pillared Bentonite Clay. According to the kinetics study, the selected BENR 2:8 follows Elovich isotherm expression, and the rate of solute adsorption decreases exponentially as the amount of adsorbed solute increases. The adsorption mechanism is explained by surface chemistry changes and adsorption kinetics. Notably, BENR 2:8 has a higher maximum phosphate adsorption (up to 22.03%) than raw Bentonite Clay (up to 2.68%).
Keywords: Bentonite, Phosphorus, Adsorption, Pillared Clay, Urine, Resource recovery.
DOI: https://doi.org/10.5281/zenodo.10390868
PDF: https://ijirst.demo4.arinfotech.co/assets/upload/files/IJISRT23OCT795.pdf
REFERENCES