以Mg-Al CLDHs (Calcined Mg-Al layered double hydroxide)和H2O2组成的类芬顿体系催化降解结晶紫(Crystal violet,CV)染料废水.考察了pH值、催化剂用量、氧化剂用量、染料起始浓度、反应温度、反应时间等因素的影响,并对Mg-Al CLDHs催化剂的再生能力进行了测试.结果表明:对浓度为40 mg/L的结晶紫溶液,当Mg-AlCLDHs用量为0.005 g,H2O2用量为1 mL,pH为7.0,降解温度为35℃,反应时间为15 min,结晶紫脱色率98%以上,催化剂再生性良好.动力学研究表明该反应符合一级动力学模型,35℃时速率常数为0.28 min-1,表观活化能为46.03 kJ·mol-1.
参考文献
[1] | 何立平,杨迎春,徐成华,叶芝祥,刘盛余.Fe/活性炭多相类Fenton法湿式氧化罗丹明B废水的研究[J].环境工程学报,2009(08):1433-1437. |
[2] | 阳立平,肖贤明.Fenton法在焦化废水处理中的应用及研究进展[J].中国给水排水,2008(18):9-13. |
[3] | 张瑛洁,马军,宋磊,柳旭升,赵吉,吴培瑛.树脂负载Fe3+/Cu2+多相类芬顿降解染料橙黄[J].环境科学学报,2009(07):1419-1425. |
[4] | 郭效军,梁小虎,武清艳.BiFeO3/H2O2体系降解孔雀石绿染料废水的研究[J].硅酸盐通报,2014(05):1018-1022. |
[5] | Feitai Chen;Pengfei Fang;Yuanpeng Gao.Effective removal of high-chroma crystal violet over TiO2-based nanosheet by adsorption-photocatalytic degradation[J].Chemical engineering journal,2012:107-113. |
[6] | Yi-Hsien Ben Liao;Jian Xun Wang;Jia-Shi Lin .Synthesis, photocatalytic activities and degradation mechanism of Bi2WO6 toward crystal violet dye[J].Catalysis Today,2011(1):148-159. |
[7] | Hongzhe Chen;Shaogui Yang;Jiao Chang;Kai Yu;Dongfang Li;Cheng Sun;Aimin Li .Efficient degradation of crystal violet in magnetic CuFe_2O_4 aqueous solution coupled with microwave radiation[J].Chemosphere: Environmental toxicology and risk assessment,2012(2):185-189. |
[8] | Sadia Ameen;M. Shaheer Akhtar;M. Nazim;Hyung-Shik Shin .Rapid photocatalytic degradation of crystal violet dye over ZnO flower nanomaterials[J].Materials Letters,2013(Apr.1):228-232. |
[9] | 郭效军,王爱平,赵磊华,张力.室温固相结合水热处理制备纳米Mg.AI层状双金属氢氧化物[J].硅酸盐通报,2011(04):789-793. |
[10] | 郭效军,包霞珍,赵琴,张丽娜,赵烜璟.水热辅助下MgFe-CO3-LDH的室温固相制备[J].硅酸盐通报,2012(03):740-743,757. |
[11] | Bin Li;Pingxiao Wu;Bo Ruan;Paiyu Liu;Nengwu Zhu.Study on the adsorption of DNA on the layered double hydroxides(LDHs)[J].Spectrochimica acta, Part A. Molecular and biomolecular spectroscopy,2014:387-393. |
[12] | Xiaofei Xue;Khalil Hanna;Mustapha Abdelmoula .Adsorption and oxidation of PCP on the surface of magnetite: Kinetic experiments and spectroscopic investigations[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,2009(3/4):432-440. |
[13] | 吴德礼,段冬,马鲁铭.黄铁矿烧渣催化H_2O_2氧化废水中难降解污染物[J].化工学报,2010(04):1001-1008. |
[14] | 刘淼,杨俊佼,武国庆,王连英.镁铝双金属氢氧化物及氧化物去除硫离子(S2-)性能及其机理研究[J].无机化学学报,2006(10):1771-1777. |
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