使用GWB软件优化铁锰氧化物的合成方法

Using the GWB Software Optimizing Synthesis of Fe-Mn Oxide

铁锰氧化物天然存在于湿地植物根部,可有效阻止土壤中重金属在植物内部的富集,可作为多种重金属的吸附剂.使用地球化学软件The Geochemist’s Workbench对铁锰氧化物合成过程进行模拟的结果表明,采用氧化还原共沉淀法合成铁锰氧化物过程中,在硫酸亚铁溶液中投加高锰酸钾溶液,p H的波动区间为5.63～2.33,且铁的氧化物先于锰的氧化物生成;而在高锰酸钾溶液中投加硫酸亚铁溶液,混合体系p H的波动区间为10.31～2.34,且铁和锰的氧化物沉淀同时生成.模拟结果进一步表明,合成原料的投加顺序与铁锰氧化物颗粒的合成效果是紧密相关的.

Fe-Mn oxide,which is naturally present in the roots of plants in the wetlands,can effectively prevent enrichment of heavy metals inside plants from the soil,and can be used as adsorbents of heavy metals.The results showed that adding potassium permanganate solution into ferrous sulfate solution,the p H was observed a range of 5. 63 to 2. 33 in the mixed system,and the iron oxide＇s formation prior to the manganese oxide＇s.While adding ferrous sulfate solution into potassium permanganate solution,the p H was observed a range of10. 31 to 2. 34 in the mixed system,and the precipitation of iron and manganese oxides were produced at the same time in the synthesis process of redox co-precipitation of iron and Fe-Mn oxides. The results indicated that,the synthesis effect of Fe-Mn oxides and the order of the synthetic raw materials of Fe-Mn oxides added have the close relation.