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首页> 外文期刊>Journal of Residuals Science & Technology >Facile Synthesis of Fe3O4-N-[(3-Trimethoxysilyl)propyl]ethylenediamine Triaceti-cacid Trisodium Salt and Adsorption of Sr2+
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Facile Synthesis of Fe3O4-N-[(3-Trimethoxysilyl)propyl]ethylenediamine Triaceti-cacid Trisodium Salt and Adsorption of Sr2+

机译：Fe3O4-N-[（3-三甲氧基甲硅烷基）丙基]乙二胺三乙酸三钠盐的简便合成及Sr2 +的吸附

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摘要

Fe3O4-N-[(3-Trimethoxysilyl)propyl]ethylenediamine triaceticacid trisodium (Fe3O4-TMS) has been synthesized by TMS adsorb to the surface of Fe3O4. Energy dispersive spectrometer (EDS) was used to characterize Fe3O4-TMS. The results of EDS indicate that TMS is modified on the surface of Fe3O4 successfully. The effects of initial concentration, pH, and coexist ions on the equilibrium adsorption capacities of strontium ion were investigated comprehensively. Removal of Sr2+ could reach 100% when initial concentration of Sr2+ is 1.0 mmol/L. The effect of pH conforms to S curve. Equation of the curve is qSr = 0.08104 – 0.09012/(1 + exp((pH – 2.92707)/0.2995)). Correlation coefficient is equal to 0.9987. Sodium and calcium ions suppress the adsorption of strontium ion. Complexation and ion exchange maybe main adsorption mechanism.
机译：Fe3O4-N-[（3-三甲氧基甲硅烷基）丙基]乙二胺三乙酸三钠（Fe3O4-TMS）已通过TMS吸附到Fe3O4表面而合成。能量色散光谱仪（EDS）用于表征Fe3O4-TMS。 EDS结果表明，TMS在Fe3O4表面成功改性。全面研究了初始浓度，pH和共存离子对锶离子平衡吸附容量的影响。当Sr2 +的初始浓度为1.0 mmol / L时，Sr2 +的去除率可达到100％。 pH的影响符合S曲线。曲线方程为qSr = 0.08104 – 0.09012 /（1 + exp（（pH – 2.92707）/0.2995））。相关系数等于0.9987。钠和钙离子抑制锶离子的吸附。络合和离子交换可能是主要的吸附机理。

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