以钢渣为原料，通过共沉淀法制备Ca?Mg?Al?Fe层状双金属氢氧化物，对材料进行了表征，考察了其对甲基橙的吸附性能. 结果表明，所制材料结构规整、晶型良好，层状结构明显，对甲基橙的吸附符合Langmuir等温吸附模型，吸附过程符合拟二级动力学方程.
Ca?Mg?Al?Fe layered double hydroxides (LDHs) was synthesized via coprecipitation using steelmaking slag as raw material. The LDHs was characterized, and its absorption property to methyl orange was also studied. The results showed that the LDHs presented well-defined crystal structure and shape. The absorption process fitted Langmuir isotherm absorption model well, and the absorption kinetics followed a pseudo-second order kinetic model.
[1] 赵俊学，李小明，唐雯聃，等. 钢渣综合利用技术及进展分析 [J]. 鞍钢技术, 2013, 6(3): 1-6.
[2] 闫启平. 我国冶金渣开发利用产业概况及发展前景. 再生资源与循环经济 [J], 2014, 7(4): 22
[3] 张朝晖, 廖杰龙, 巨建涛,等. 钢渣处理工艺与国内外钢渣利用技术 [J]. 钢铁研究学报, 2013, 25(7):1-4.
[4] Shen H, Forssberg E. An overview of recovery of metals from slags [J]. Waste Management, 2003, 23(10): 933-949.
[5] Waligora J, Bulteel D, Degrugilliers P, et al. Chemical and mineralogical characterizations of LD converter steel slags: A multi-analytical techniques approach [J]. Materials Characterization, 2010, 61(1): 39-48.
[6] Yi H, Xu G, Cheng H, et al. An overview of utilization of steel slag [J]. Procedia Environmental Sciences, 2012, 16: 791-801.
[7] Lin Y J, Fang Q L, Chen B L. Metal composition of layered double hydroxides (LDHs) regulating ClO4? adsorption to calcined LDHs via the memory effect and hydrogen bonding[J]. Journal of Environmental Sciences, 2014, 26(3): 493-501
[8] Wang Q, O’Hare D. Recent advances in the synthesis and application of layered double hydroxide (LDH) nanosheets[J]. Chemical reviews, 2012, 112(7): 4124-4155.
[9] Cavani F, Trifirò F, Vaccari A. Hydrotalcite-type anionic clays: Preparation, properties and applications [J]. Catalysis Today, 1991, 11(2): 173-301.
[10] 杜以波, D. G. Evans, 孙鹏, 段雪. 阴离子型层柱材料研究进展 [J]. 化学通报, 2000 (5): 20-24.
[11] 吕至, 段雪. 阴离子层状材料的可控制备 [J]. 催化学报, 2008, 29(9): 839-856.
[12] 刘媛. 层状双金属氢氧化物的合成与应用 [J]. 工业催化, 2005 (z1): 531-534.
[13] 陈艳, 王丽秋, 王晨晔, 等. 以钢渣为原料合成层状双氢氧化物及其结构表征 [J]. 化工学报, 2015, 66(12): 5149-5156.
[14] Poul L, Jouini N, Fiévet F. Layered hydroxide metal acetates (metal= zinc, cobalt, and nickel): elaboration via hydrolysis in polyol medium and comparative study [J]. Chem of Mater 2000; 12(10): 3123-3132.
[15] Wang C, Chen Y, Shang X, et al. Facile synthesis of Ca/Mg/Al/Fe layered double hydroxides using steelmaking slag as raw material[J]. Materials Letters, 2016, 173: 115-118.
[16] Li Y, Gao B, Wu T, et al. Hexavalent chromium removal from aqueous solution by adsorption on aluminum magnesium mixed hydroxide [J]. Water research, 2009, 43(12): 3067-3075.
[17] Lv L, He J, Wei M, et al. Factors influencing the removal of fluoride from aqueous solution by calcined Mg–Al–CO 3 layered double hydroxides[J]. Journal of Hazardous Materials, 2006, 133(1): 119-128.
[18] Yang Y, Gao N, Deng Y, et al. Adsorption of perchlorate from water using calcined iron-based layered double hydroxides [J]. Applied Clay Science, 2012, 65: 80-86.
[19] Li Y, Gao B, Wu T, et al. Adsorption kinetics for removal of thiocyanate from aqueous solution by calcined hydrotalcite [J]. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2008, 325(1): 38-43.
[20] Kuwahara Y, Ohmichi T, Kamegawa T. A novel conversion process for waste slag: synthesis of a hydrotalcite-like compound and zeolite from blast furnace slag and evaluation of adsorption capacities [J]. J Mater Chem 2010; 20(24): 5052-5062.
