Study on the Treatment of Wastewater Containing Carbon Tetrachloride by Nanometer Zero-Valent Iron Preparated with Leaf Extracts
Abstract: Nano zero-valent iron was synthesized by green methods based on purple leaf barberry leaves extract as a reducing agent and stabilizer. In order to explore the best extraction conditions of the purple leaf barberry leaves extract, we used orthogonal test. The results showed that the contributions of the factors to the polyphenols extracting could be list in descending order as follows: extraction temperature > solid-liquid ratio > extraction time > ethanol concentration. In addition, the best extracting conditions were temperature of 50˚C, ethanol and liquid solid ratio of leaves was 60:1 ml/g and leaching time was 30 min and ethanol concentration was 40%. Purple leaf barberry leaves extract and synthesis nano zero valent iron were analyzed and characterized by XRD, SEM, TEM and FTIR. Green synthesis of nano zero-valent iron adsorption performance was detected, by aiming at carbon tetrachloride adsorption. The influences of adsorption performance by the initial concentration, pH and dosing quantity were investigated. The result show that under the constant as pH and additive quantity, initial concentration of 4 mg/L, 110 min degradation reaction rate effect was 98.19%. When the initial concentration of carbon tetrachloride and zero-valent iron dosing quantity invariable condition, the optimum condition for pH is 6.1, the reaction of 110 min, the degradation rate was 99.6%. When carbon tetrachloride under the constant initial concentration and pH, the best dosing quantity is 0.12 g/L, the degradation rate is 97.89%. This reduction reaction is in line with the first order reaction kinetics model.
文章引用: 苏晓渊 , 成 岳 , 魏 倩 , 余淑贞 (2017) 树叶提取液制备纳米零价铁及处理含四氯化碳废水的研究。 环境保护前沿， 7， 325-336. doi: 10.12677/AEP.2017.74045
 孟亚峰. 零价铁还原降解四氯化碳废水研究[D]: [博士学位论文]. 杭州: 浙江大学, 2010.
 杜毅, 王向宇. 新型纳米零价铁的绿色合成和改性工艺研究进展[J]. 环境化学, 2016, 35(2): 337-347.
 许陈. 法桐落叶中植物多酚的测定与提取研究[D]: [硕士学位论文]. 南京: 南京理工大学, 2006.
Ho, Y.S. and McKay, G. (1999) Pseudo-Second Order Model for Sorption Processes. Transactions of the Institution of Chemical Engineers, 77, 165-173.
 却志群, 陈继鹏, 张运良. 铁观音茶叶中茶多酚提取工艺条件的优化[J]. 湖南农业科学, 2014, 19: 5-7.
 Machado, S., Pacheco, J.G., Nouws, H.P.A., Albergaria, J.T. and Delerue-Matos, C. (2015) Characterization of Green Zero-Valent Iron Nanoparticles Produced with Tree Leaf Extracts. Science of the Total Environment, 533, 77-81.
 O’Connor, C.J., Kolesnichenko, V., Carpenter, E., et al. (2001) Fabrication and Properties of Magnetic Particles with Nanometer Dimensions. Synthetic Metals, 122, 547-557.
Wang, Q.L., Snyder, S., Kim, J., et al. (2009) Aqueous Ethanol Modified Nanoscale Zero Valent Iron in Bromate Reduction: Synthesis, Characterization, and Reactivity. Environmental Science & Technology, 43, 3293-3299.
Luo, F., Chen, Z., Mallavarapu, M., et al. (2014) Biomoleculesin Grape Leaf Extract Involved in One-Step Synthesis of Iron-Based Nanoparticles. RSC Advances, 4, 53467-53474.
Lu, F., Sun, D., Huang, J., et al. (2014) Plant-Mediated Synthesis of Ag-Pd Alloy Nanoparticle and Their Application as Catalyst toward Selective Hydrogenation. ACS Sustainable Chemistry & Engineering, 2, 1212-1218.
 翁秀兰, 林深, 陈征贤. 天然膨润土负载纳米铁的制备及其对阿莫西林的降解性能[J]. 中国科学: 化学, 2012, 42(1): 17-23.
 黄兰兰, 翁秀兰, 陈祖亮. 绿茶萃取液合成纳米铁颗粒及其对孔雀绿的降解性能[J]. 福建师范大学学报, 2013, 29(4): 65-72.
 樊文井, 成岳, 焦创, 曾小军, 王维. 流变相法制备包裹型Starch/Fe0及去除水中Cr(VI)的反应动力学研究[J]. 功能材料, 2014, 19(45): 19035-19039.
 揣小明, 单爱琴, 刘敬武, 等. 利用零价铁去除四氯化碳的批试验研究[J]. 农业环境科学学报, 2008, 27(2): 762- 766.