Application of biochar from agro‑industrial waste in solid‑phase extraction for the determination of 17β‑estradiol from aqueous solution
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International Journal of Environmental Science and Technology
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In this study, the biochar produced from coffee wastes and eucalyptus sawdust was employed as an adsorbent in solid-phase
extraction devices for the determination of 17β-estradiol from aqueous solution. Parameters such as adsorbent mass, solvent
type, eluent volume, ionic strength, breakthrough volume, and the cartridge reuse were evaluated. The best experimental
conditions for solid-phase extraction concerning adsorbent mass, elution solvent, eluent volume, ionic strength, breakthrough
volume, and cartridge reuse were established. The most suitable conditions for 1.0-mL cartridge were: mass of 50 mg, elution
solvent 5.0 mL of acetonitrile/water 90:10 (v:v), 0.003 mol L−1 NaCl concentration, and 17β-estradiol solution volume
50.0 mL. The solid-phase extraction results showed that, although 17β-estradiol recovery was about 60%, the removal efficiency
was 100% and the cartridges of 200 and 500 mg can be reused eight and four times, respectively, without any decrease
in adsorption capacity. The results demonstrate the potential use of biochar as new adsorbent in solid-phase extraction devices
for the removal of estrogens in aqueous solution.
Como referenciar
ROVANI, S.; MEDEIROS, L.F.; LIMA, E.C.; FERNANDES, A.N. Application of biochar from agro‑industrial waste in solid‑phase extraction for the determination of 17β‑estradiol from aqueous solution. International Journal of Environmental Science and Technology, v. 16, n. 12, p. 7623-7630, 2019. DOI: 10.1007/s13762-019-02295-6. Disponível em: http://repositorio.ipen.br/handle/123456789/30319. Acesso em: 30 Dec 2025.
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