Activated carbon from coconut shells was modified with lanthanum chloride and tested for removing hexavalent chromium from water, with best removal at pH 5 and four hours of contact. About 3% of the lanthanum leached from the material during tests.
Key numbers
- Lanthanum leaching from the modified carbon about 3% (Section 2, p. 5).
Methods (brief)
Adsorbent preparation and characterization (BET, FTIR, SEM) with bench-scale adsorption tests in triplicate.
Evidence fitness
Off-topic for dietary exposure. It indicates lanthanum-modified sorbents can release some lanthanum to water but does not support dietary exposure or toxicity claims.
Limitations
Laboratory material or biomedical study; no environmental, food or human exposure measurements.
Related evidence
Update history
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