MIL–53（Fe）吸附去除硝基氧化剂废水中的NO2–

NO2– removal from nitro-oxidizer wastewater by adsorption with MIL-53（Fe）

通过溶剂热法合成金属有机骨架材料MIL-53（Fe），它呈棒状结构，长度50μm左右，晶型发育较好、结晶度高，具有良好的热稳定性；它能有效吸附除去亚硝态氮，吸附行为符合Langmuir等温线和准二级动力学吸附模型，平衡吸附量可达24．40mg／g；其吸附能力受溶液pH影响较大。该材料具有良好的循环利用性，循环／再生4次后仍可达到原吸附率的77％。

The metal organic framework material MIL-53（Fe） was synthesized by the solvothermal method. The MIL-53（Fe） exhibits a rod-like structure with a length of about 50 μm. It possesses good crystal form growth, high crystallinity and good thermal stability. It can effectively adsorb and remove the nitrite nitrogen, the adsorption behavior conforms to the Langmuir isotherm and the quasi-second-order dynamic adsorption model, and the equilibrium adsorption capacity can achieve 24.40 mg/g. Its adsorption capacity is significantly affected by pH of the solution. Said material possesses good recycling performance. After recycling/regenerating for 4 times, it can still achieve 77% of the original adsorption rate.