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为探讨新型金属氧化物负载型树脂对水中Sb(V)的吸附效能,以D201树脂为载体,制备得到一种铁-锆水合金属氧化物负载型树脂吸附剂,通过静态、动态吸附试验,考察了该吸附剂对水中Sb(V)的吸附效能。研究结果表明,通过化学负载处理,在D201树脂载体上负载有均匀、致密的铁-锆水合金属氧化物吸附层。载铁-锆复合树脂对Sb(V)的最大饱和吸附容量为73.75mg/g。在反应时间为90min内,该吸附剂对水中Sb(V)的吸附快速达到吸附平衡状态。最佳的反应pH值范围为2.82~4.30。水中共存的SO_4~(2-)对该吸附剂的Sb(V)吸附量的影响较为显著,而Cl~-、NO_3~-的影响相对较小。该吸附剂对废水中Sb(V)的去除率达98.9%,出水中残余锑浓度满足《锡、锑、汞工业污染排放标准(GB30770-2014)》中锑的排放浓度限值。
In order to investigate the adsorption capacity of Sb (V) on water by a novel metal oxide supported resin, an iron-zirconium hydrated metal oxide supported resin adsorbent was prepared by using D201 resin as carrier. Through static and dynamic adsorption experiments, The adsorbent on water Sb (V) adsorption efficiency. The results show that the D201 resin supports with a uniform and dense iron-zirconium hydrate metal oxide adsorption layer by chemical loading treatment. The maximum saturated adsorption capacity of iron-zirconium composite resin for Sb (V) is 73.75mg / g. In the reaction time of 90min, the adsorption of Sb (V) in water quickly reaches the adsorption equilibrium. The optimum reaction pH ranged from 2.82 to 4.30. The coexistence of SO 4 2- in the water has a significant effect on the Sb (V) adsorption capacity of the adsorbent, while the effect of Cl 3 - and NO 3 - - is relatively small. The removal rate of Sb (V) in the waste water is 98.9%. The concentration of residual antimony in the effluent meets the limit of antimony concentration in “Discharge Standard of Industrial Pollution of Tin, Antimony and Mercury (GB30770-2014)”.