What does this research mean for the field?

Commercial LTA zeolite rapidly and efficiently removes Mn2+ and Zn2+ from aqueous solutions via framework ion exchange, and the resulting metal-loaded material can be safely reused as an agricultural micronutrient source without acute phytotoxicity. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To evaluate the adsorption kinetics, equilibrium mechanisms, and post-adsorption reuse safety of commercial LTA-type zeolite for removing aqueous divalent manganese and zinc.

August 31, 2026International Journal of Environmental Science and TechnologyOpen Access

Fast adsorption of Mn2+ and Zn2+ on commercial LTA zeolite: kinetics, equilibrium, and preliminary reuse assessment

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Authors

ASAllef Leite dos Santos TCT. S. Costa TMT. L. M. Moura

Discussion

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Overview

Experimental study demonstrates rapid manganese and zinc removal by LTA zeolite via ion exchange, indicating safe agricultural reuse potential as micronutrients.

Key Points

To evaluate the adsorption kinetics, equilibrium mechanisms, and post-adsorption reuse safety of commercial LTA-type zeolite for removing aqueous divalent manganese and zinc.
Characterized Mn2+ and Zn2+ uptake kinetics and equilibrium isotherms using pseudo-second-order and Langmuir modeling alongside stoichiometric Na+ release measurements.
Assessed acute phytotoxicity through Cucumis sativus seed germination assays to determine whether metal-loaded zeolites could be repurposed as micronutrient fertilizers.
Zeolite uptake reached near-equilibrium within the first minute, with Zn2+ occupying exchange sites faster than Mn2+.
Adsorption followed Langmuir monolayer equilibrium and pseudo-second-order kinetics, driven primarily by Na+/divalent cation framework exchange rather than external surface area.
Germination assays with Cucumis sativus revealed no acute phytotoxic effects from metal-loaded zeolites, demonstrating potential for safe post-treatment reuse.

Cite This Study

Santos et al. (2026) studied this question.

synapsesocial.com/papers/6a954238f20e493292a745eb https://doi.org/10.1007/s13762-026-07390-z

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August 31, 2026International Journal of Environmental Science and TechnologyOpen Access

Fast adsorption of Mn2+ and Zn2+ on commercial LTA zeolite: kinetics, equilibrium, and preliminary reuse assessment

View Full Paper

Ask AI

Bookmark

Authors

ASAllef Leite dos Santos TCT. S. Costa TMT. L. M. Moura

Discussion

Member takes

Overview

Experimental study demonstrates rapid manganese and zinc removal by LTA zeolite via ion exchange, indicating safe agricultural reuse potential as micronutrients.

Key Points

To evaluate the adsorption kinetics, equilibrium mechanisms, and post-adsorption reuse safety of commercial LTA-type zeolite for removing aqueous divalent manganese and zinc.
Characterized Mn2+ and Zn2+ uptake kinetics and equilibrium isotherms using pseudo-second-order and Langmuir modeling alongside stoichiometric Na+ release measurements.
Assessed acute phytotoxicity through Cucumis sativus seed germination assays to determine whether metal-loaded zeolites could be repurposed as micronutrient fertilizers.
Zeolite uptake reached near-equilibrium within the first minute, with Zn2+ occupying exchange sites faster than Mn2+.
Adsorption followed Langmuir monolayer equilibrium and pseudo-second-order kinetics, driven primarily by Na+/divalent cation framework exchange rather than external surface area.
Germination assays with Cucumis sativus revealed no acute phytotoxic effects from metal-loaded zeolites, demonstrating potential for safe post-treatment reuse.

Cite This Study

Santos et al. (2026) studied this question.

synapsesocial.com/papers/6a954238f20e493292a745eb https://doi.org/10.1007/s13762-026-07390-z

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