利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

51 条记录 (耗时 0.011 秒)

    METHOD FOR RECOVERING PHOSPHOROUS AND METAL IONS FROM DILUTE AQUEOUS FEEDS USING CEMENTITIOUS ADSORBENTS
    4.
    发明公开
    METHOD FOR RECOVERING PHOSPHOROUS AND METAL IONS FROM DILUTE AQUEOUS FEEDS USING CEMENTITIOUS ADSORBENTS 审中-公开

    公开(公告)号：EP4382491A1

    公开(公告)日：2024-06-12

    申请号：EP22212266.5

    申请日：2022-12-08

    申请人： PAUL SCHERRER INSTITUT

    发明人： Testino, Andrea ,  PATIL, Ajay Bhagwan ,  Torrent, Laura

    IPC分类号： C02F1/28 ,  C02F1/66 ,  C02F1/52 ,  C02F101/10 ,  C02F103/10

    CPC分类号： C02F1/281 ,  C02F2101/10520130101 ,  C02F2209/0620130101 ,  C02F2103/1020130101 ,  C02F2301/04620130101 ,  C02F1/66 ,  C02F1/5245

    摘要： A robust and economically viable technology is developed for the phosphorus (P) and metals recovery from dilute aqueous feeds. This is one of the first efforts to recover P and contaminants from the wastewater streams using adsorbents without the need of incineration and acid leaching of the sludge. P is becoming very critical raw material and nutrient for the agricultural and industrial uses and most of the produced materials are lost in the water bodies. The process technology addresses the P management using the cementitious inorganic adsorbent containing transition and alkali metals like Al, Fe, Mg, Ca, Na and S, but not limited to this. The sequence of interconversion in solution chemistry via inorganic sulphates and hydroxides can produce the economic products such as phosphoric acid and struvite or transition metal salts. The developed technology has the potential for scale up on industrial scale, re-use of components and preconcentration of dilute P and metal contents as well as extended use for recovering from other industrial aqueous feeds after the corresponding optimization. The clear advantage with the claimed process is that it can avoid the use of strong mineral acid and high temperature pyrometallurgical treatments to reach the similar products without negative environmental impact.