稳定态纳米零价铁-厌氧菌联合处理法降解2,4,6-三氯苯酚

利用SEM、XRD、FTIR等手段对稳定态纳米零价铁（NH₂-SiO₂@NZVI）进行表征，并考察NH₂-SiO₂@NZVI-厌氧菌体系对2，4，6-三氯苯酚（2，4，6-TCP）的降解效果。实验结果表明：NH₂-SiO₂@NZVI具有较强的抗氧化能力及较好的分散性；当2，4，6-TCP质量浓度 50 mg/L、NH₂-SiO₂@NZVI加入量1 g/L、初始 pH 7.00、反应120 h时，2，4，6-TCP的去除率为34.76%，一级降解速率常数为0.022 1，均远大于普通纳米零价铁颗粒；在NH₂-SiO₂@NZVI-厌氧菌体系中，2，4，6-TCP的去除率可达82.70%，NH₂-SiO₂@NZVI与厌氧微生物之间表现出明显的协同效应，能有效缓解2，4，6-TCP对厌氧微生物的抑制作用，稳定体系pH，提高微生物的降解活性和产甲烷活性。

Degradation of 2，4，6-Trichlorophenol by Combination Process with Stable Nano-scale Fe0 and Anaerobic Bacteria

The particles of stable nano-scale Fe⁰(NH₂-SiO₂@NZVI) were characterized by SEM,XRD and FTIR. The degradation effects of 2,4,6-trichlorophenol(2,4,6-TCP) in the NH₂-SiO₂@NZVI- anaerobic bacteria system were studied. The experimental results show that：The anti-oxidation capability and dispersity of NH₂-SiO₂@NZVI are good；When the mass concentration of 2,4,6-Trichlorophenol is 50 mg/L,the dosage of NH₂-SiO₂@NZVI is 1g/L,the initial pH is 7.00 and the reaction time is 120 h,the removal rate of 2,4,6-trichlorophenol is 34.76%,the speed constant for the first order reaction is 0.0221,which are both much larger than those of normal nano-scale Fe⁰；The removal rate of 2,4,6-trichlorophenol in the NH₂-SiO₂@NZVI- anaerobic bacteria system can reach 82.70%,which indicates that there is a significant coordination effect between NH₂-SiO₂@NZVI and anaerobic bacteria.