Characterization of ZrO 2 Nano Particles Prepared by Glycothermal Method and their Efficiency as Adsorbent of As(III) and As(V) from Waste Water

B. Al‐Farhan
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引用次数: 4

Abstract

In this studied ZrO2 nano particles are prepared by glycothermal method. Characterization of the prepared nano particle was done using XRD, TEM and SEM. According to the obtained results, ZrO2 nano particles prepared by glycothermal method are mainly t-ZrO2 phase with tetragonal shape with an average size in the range of 30-50 nm. The formation of t-ZrO2 as the main phase of zirconium nano particles could be related to the presence of sodium hydroxide in the generation step. The removal efficiency of ZrO2 nano particles for adsorbing As(III) and As(V) from waste water is studied. The efficiency of removal is significantly increased with increasing the dose of zirconia nano particles till 0.5 g/L. This related to increasing in the active site which are available for the removal of arsenic species by increasing the dose of the nano particles. For both As(III) and As(V), the removal efficiency increased by decreasing pH value of the solution and increasing the contact time.
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糖热法制备zro2纳米颗粒的表征及其对废水中as (III)和as (V)的吸附剂性能
本研究采用糖热法制备ZrO2纳米颗粒。采用XRD、TEM和SEM对制备的纳米颗粒进行了表征。结果表明,糖热法制备的ZrO2纳米颗粒主要为t-ZrO2相,呈四边形,平均粒径在30 ~ 50 nm之间。t-ZrO2作为锆纳米颗粒的主相的形成可能与生成过程中氢氧化钠的存在有关。研究了ZrO2纳米颗粒对废水中As(III)和As(V)的去除效果。随着氧化锆纳米颗粒投加量的增加,去除率显著提高至0.5 g/L。这与通过增加纳米粒子的剂量来去除砷的活性位点的增加有关。对于As(III)和As(V),随着溶液pH值的降低和接触时间的延长,去除效率均有所提高。
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