| 摘要 |
Process is for the regeneration or elution (washing) of adsorbents (I) in adsorption columns in which a liquid flow is treated. After adsorption, the adsorbents are submitted to an electric field applied by an anode and a cathode (8, 9). Appts. for the process, comprises an elongated receiver with two open ends (12, 13). The major part between these cpds. contains an adsorbent and has two electrodes arranged opposite each other so they can generate an electric field in most of the adsorbent. The electrical field is perpendicular to the flow (F, F1) of the liquid to be treated. At least one electrode is separated from the adsorbent by a membrane (2, 3) permeable to ions. A potential difference of between 1 and 1000 volts is applied between the electrodes. The adsorbent is an ion-exchanging resin, or a mixture of cationic, anionic and nonionic resins. The electrodes are parallel plates. USE - The regeneration or elution of an adsorbent (claimed), in particular anionic, cationic or nonionic resins or a mixture of these. Also used for the demineralisation of water, the extraction of nitrates and nitrites and the separation of amino acids. |
