期刊文献+

Zn-Al类水滑石磷吸附剂的制备及其吸附性能 被引量:18

Synthesis of Zn-Al hydrotalcite-like compounds as phosphate adsorbent and its adsorption capacity
下载PDF
导出
摘要 采用共沉淀法制备了一系列Zn-Al类水滑石吸附剂,并考察了制备条件对其磷酸盐吸附性能的影响。结果表明,在制备温度为70℃、共沉淀剂为NaOH、陈化时间为6h及焙烧温度为300℃时得到的Zn-Al类水滑石对城市污水处理厂污泥脱水液中磷酸盐的吸附效果最好,其饱和吸附容量达72.46mgP·(g吸附剂)-1。该吸附剂吸附水中磷的动力学拟合效果表现为假二级动力学方程>Elovich方程>假一级动力学方程。吸附等温线符合Langmuir吸附模型。 A series of Zn-Al hydrotalcite-like compounds (HTALs) were synthesized by the coprecipitation method, and the factors affecting their phosphate adsorption capacity were investigated. The results showed that the highest phosphate adsorption up to 72.46 mg P·g^-1 in sludge filtrate of a sewage work by Zn-Al HTALs was obtained when the adsorbent was prepared at 70℃ using NaOH solution as the coprecipitant, aged for 6 h and calcined at 300℃ for 4 h. The fitness of kinetic models for phosphate adsorption on Zn-Al-300 followed the order of pseudo second-order equation〉 Elovich equation 〉 the pseudo first-order equation. In addition, the adsorption isotherm was shown as the Langmuir-type.
出处 《化工学报》 EI CAS CSCD 北大核心 2008年第9期2270-2275,共6页 CIESC Journal
基金 国家重点基础研究发展计划项目(2004CB418505) 黑龙江省杰出青年基金项目~~
关键词 Zn-Al类水滑石 污泥脱水液 吸附 磷酸盐 Zn-Al HTALs sludge filtrate adsorption phosphate
  • 相关文献

参考文献17

  • 1袁俊宏.我国磷资源现状及资源保障程度分析[J].中国矿业,2003,12(4):4-9. 被引量:15
  • 2Shin H S, Kim M J, Nam S Y, Moon H C. Phosphorus removal by hydrotalcite like compounds (HTLcs). Water Science Technology, 1996, 34 (1/2): 161-168
  • 3Das J, Patra B S, Baliarsingh N, Parissa K M. Adsorption of phosphate by layered double hydroxides in aqueous solutions. Applied Clay Science, 2006, 32:252-260
  • 4Kuzawa K, Jung Y J, Kiso Y, Yamada T, Nagai M, Lee T G. Phosphate removal and recovery with a synthetic hydrotalcite as an adsorbent. Chemosphere, 2006, 62: 45- 52
  • 5Cavani F, Trifiro F, Vaccari A. Hydrotalcite-type anionic clays: preparation, properties and application. Catalysts Today, 1991, 11 (2): 173-301
  • 6Miyata S. Anion exchange properties of hydrotalcite-like compounds. ClaysClayMine, 1983, 31:305-311
  • 7Parker L M, Milestone N B, Newman R H. The use of hydrotalcite as an anion absorbent. Industrial & Engineering Chemistry Research, 1995, 34:1196-1202
  • 8Ni Z M, Xia S J, Wang L G, Xing F F, Pan G X. Treatment of methyl orange by calcined layered double hydroxides in aqueous solution: adsorption property and kinetic studies. Colloid and Interface Science, 2007, 316 (2) : 284-291
  • 9Seida Y, Nakano Y. Removal of humic substances by layered double hydroxide containing iron. Water Research, 2000, 34 (5): 1487-1494
  • 10Fetter G, Ramos E, Olguin M T, Bosch P, Lopez T,13ulbulian S. Sorption of 131 I by hydrotalcites. Journal of Radioanalytical Nuclear Chemist, 1997, 222:63-66

二级参考文献39

  • 1[1]Cavani F,Trifiro F,Vaccari A.Hydrotalcite-type anionic clays:Preparation,properties and application [J].Catal Today,1991,11(2):173~301.
  • 2[2]Inacio J,Taviot-Gueho C,Forano C,et al.Adsorption of MCPA pesticide by MgAl-layered double hydroxides [J] .Appl Clay Sci,2001,18(5-6):255~264.
  • 3[3]You Youwen,Vance G F,Zhao Hongting.Selenium adsorption on Mg-Al and Zn-Al layered double hydroxides [J].Appl Clay Sci,2001,20(1-2):13~25.
  • 4[4]Allman R.The crystal structure of pyroaurite[J].Acta Crystal,1968,B(24):972~977.
  • 5[5]Rives V,Ulibarri M A.Layered double hydroxides (LDH)intercalated with metal coordination compounds and oxometalates[J].Coord Chem Rev,1999,181(1):61~120.
  • 6[6]Taylor H F W.Crystal structures of some double hydroxide minerals [J].Mineral Mag,1973,39(304):377~389.
  • 7[7]Miyata S.Anion exchange properties of hydrotalcite-like compounds[J].Clay Clay Miner,1983,31:305~311.
  • 8[8]Bish D L.Anion exchange in the pyroaurite group:Applications to other hydroxide minerals [J].Bull Mineral,1980,103:170~175.
  • 9[9]Meyn M,Beneke,Lagaly G.Anion-exchange reactions of layered double hydroxides [J].Inorg Chem,1990,29:5201 ~5207.
  • 10[10]Chatelet L,Bottero J Y,Yvon J,et al.Competition between monovalent and divalent anions for calcined and uncalcined hydrotalcite:Anion exchange and adsorption sites [J].Colloid Surf A,1996,111(3):167~175.

共引文献97

同被引文献205

引证文献18

二级引证文献149

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部