Abstract: A new adsorbent, bead cellulose loaded with Fe hydroxide (β-FeOOH) was prepared and used for the removal of arsenic from groundwater.Column experiments indicated that the adsorbent had higher efficiency of eliminating both arsenite and arsenate than other adsorbents reported in literature.High bed volumes of 2200 BV and 5000 BV up to a breakthrough concentration of 10 μg•L^-1 were achieved for the arsenite and arsenate removal in the studies with groundwater arsenic concentration of 500 μg•L^-1 while the empty bed contact time were 4.2 min and 5.9 min respectively.While 250 μg•L^-1 of arsenite and 250 μg•L^-1 of arsenate were spiked together in the groundwater and the empty bed contact time was 5.0—5.2 min, the breakthrough volumes up to 50 μg•L^-1 were 7000 BV，6000 BV and 6700 BV respectively for three column recycles.The adsorbent could be regenerated with 2 mol•L^-1 NaOH solutions efficiently.

摘要： 用球形棉纤维素作载体，研制成了一种新的吸附剂：载铁（β-FeOOH）球形棉纤维素吸附剂，并应用于地下水砷的去除.柱实验表明，吸附剂对As(Ⅲ)和As(Ⅴ)的去除效果均明显优于相关文献中报道的吸附剂.采用含砷为500 μg•L^-1的地下水为柱实验进水，空床接触时间分别为4.2 min和5.9 min时，按照世界卫生组织推荐的新卫生标准（10 μg•L^-1），吸附剂去除As(Ⅲ)和As(Ⅴ)的穿透体积分别达2200 BV和5000 BV. 如采用含As(Ⅲ)和As(Ⅴ)各为250 μg•L-1的地下水为柱实验进水（总砷为500 μg•L^-1），空床接触时间5.0～5.2min时，按照现行中国饮用水砷最高允许浓度50 μg•L^-1的卫生标准，3次过柱穿透点的出水体积分别达7000 BV、6000 BV和6700 BV.吸附剂可以用2 mol•L^-1NaOH洗脱再生，再生效果良好.