改性赤泥负载瓷砂滤料吸附剂的制备与表征

Preparation and characterization of the activated red mud loaded porcelain sand

以铝工业废矿渣碱性赤泥为原料,通过铁盐改性处理,制备新型羟基铁吸附剂,并将其负载于球形瓷砂滤料(FBS)表面,制备表面负载改性赤泥的球形瓷砂吸附滤料(IFBS)。结果表明,IFBS颗粒均匀,性能稳定,不仅具有普通陶粒滤料的截滤除浊效能,而且对水中砷、磷等阴离子具有较强吸附能力,克服粉末吸附剂固液分离难题。

Red mud( RM),a waste tailing from alumina production was modified with FeCl3 for the removal of arsenate and phosphate from water. The modified red mud( MRM) adsorbent was coated on the filtrate ball sand( IFBS). The size of IFBS was almost equally. It was not only filtration medium but also adsorbent. The IFBS has an excellent adsorptive ability of As( V) and P ions. It can resolve the problem of the solid-liquid separation for powder adsorbent.