水合氧化铁的制备及其对重金属的吸附

Preparation of Ferrihydrite and the Adsorption of Heavy Metals

以氯化亚铁溶液和碳酸氢铵为原料,分别通入氮气和空气,反应得到水合氧化铁样品。通过XRD、TEM和BET对其进行表征,结果表明:样品为α-FeOOH和γ-FeOOH的复合物,且此样品具有较大的比表面积和总孔容。以重金属为污染物,研究样品对模拟水和饮用水中重金属的吸附性能。结果表明:样品对大多数重金属的去除效率能够达到90%以上,是一种较好的吸附剂。

Using ferrous chloride solution and ammonium bicarbonate as raw materials,nitrogen and air were respectively injected to obtain ferrihydrite.It was characterized by XRD,TEM and BET.Results showed that the sample was a compound ofα-FeOOH andγ-FeOOH,which had a large specific surface area and total pore volume.Adsorption of the sample on heavy metals in simulated water and drinking water was studied by using heavy metals as pollutants.Results shows that removal efficiency of the sample on the most heavy metals can reach more than 90%,and it’s a good adsorbent.