What question did this study set out to answer?

The aim is to develop a dual-function system using iron-loaded resin to remove hydrogen sulphide and upgrade biogas.

Iron( III )‐loaded cation exchange resin: A dual approach for aqueous H 2 S removal and biogas desulphurization

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Demonstrates enhanced hydrogen sulphide removal in biogas using iron-loaded resin, suggesting a sustainable purification method.

The aim is to develop a dual-function system using iron-loaded resin to remove hydrogen sulphide and upgrade biogas.
Developed Fe3+/CIER composite for desulphurization.
Conducted batch and fixed-bed experiments to test efficiency and scalability.
Used central composite rotational design to optimize conditions.
Achieved 72% sulphide removal over five cycles.
Up to 99.9% removal efficiency was reached under optimized conditions.
Sustained 90% removal for 420 minutes during fixed-bed tests.

Thrun et al. (2026) studied this question.

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