Ferric oxide-chitosan composites also show enthalpic governed adsorption reactions with arsenicals, with desorption temperatures of 300-330 K . Therefore, the feature of enthalpically governed adsorption reactions can be exploited to regenerate the material by thermal treatment and/or supporting other recovery treatments. In contrast, ferric hydroxide and zirconium-based metal-organic framework are adsorbents with entropically and enthalpic-entropically governed adsorption reactions, respectively .