全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
环境化学  2015 

膨润土负载纳米铁用于降解水体中阿莫西林

Keywords: 膨润土负载纳米铁,阿莫西林,动力学,热力学

Full-Text   Cite this paper   Add to My Lib

Abstract:

采用液相还原法合成膨润土负载纳米铁(B-nZVI)和纳米铁(nZVI)并用于降解水中的阿莫西林.实验结果表明,无论是单独nZVI还是B-nZVI都能有效降解阿莫西林.在25mL浓度为20mg·L-1的阿莫西林溶液中加入0.1g的B-nZVI(其中nZVI的含量为0.05g),溶液的初始pH值为6.65,摇床的振荡速率为250r·min-1,反应温度为25℃,反应时间为120min的条件下,B-nZVI对阿莫西林的降解效率高达93.1%,在此实验条件下,单独nZVI(0.05g)对阿莫西林的降解效率只有82.3%,这是由于膨润土对nZVI起到分散作用,从而使B-nZVI的反应活性得到提高.降解动力学研究表明,B-nZVI对阿莫西林的降解过程符合表观一级反应动力学规律,相关系数R2均大于0.945.B-nZVI可多次重复用于降解阿莫西林.

References

[1]  Lissemore L, Hao C, Yang P, et al. An exposure assessment for selected pharmaceuticals within a watershed in Southern Ontario[J]. Chemosphere, 2006, 64: 717-729
[2]  Vera H, Lúcia S. Degradation and removal methods of antibiotics from aqueous matrices-A review[J]. J Environ Manage, 2011, 92: 2304-2347
[3]  Ikehata K, Naghashkar N J, Eidin M G. Degradation of aqueous pharmaceuticals by ozonation and advanced oxidation processes: a review[J]. Ozone Sci Eng, 2006, 28: 353-414
[4]  Emad S E, Malay C. Photocatalytic degradation of amoxicillin, ampicillin and cloxacillin antibiotics in aqueous solution using UV/TiO2 and UV/H2O2/TiO2 photocatalysis[J]. Desalination, 2010, 252: 46-52
[5]  Fujishima A, Zhang X T, Tryk D A. Heterogeneous photocatalysis: from water photolysis to applications in environmental cleanup[J]. Int J Hydrogen Energy, 2007, 32: 2664-2672
[6]  Panizza M, Cerisola G. Direct and mediated anodic oxidation of organic pollutants[J]. Chem Rev, 2009, 109: 6541-6569
[7]  Geng B, Jin Z H, Li T L, et al. Preparation of chitosan-stabilized Fe0 nanoparticles for removal of hexavalent chromium in water[J]. Sci Total Environ, 2009, 407: 4994-5000
[8]  Zhang X, Lin Y M, Shan X Q, et al. Degradation of 2,4,6-trinitrotoluene (TNT) from explosive wastewater using nanoscale zero-valent iron[J]. Chem Eng J, 2010,158: 566-570
[9]  Fang Z Q, Qiu X Q, Chen J H, et al. Degradation of metronidazole by nanoscale zero-valent metal prepared from steel pickling waste liquor[J]. Appl Catal B: Environ, 2010, 100: 221-228
[10]  Zhang Z, Naman C, Wo J J, et al. Factors influencing the dechlorination of 2,4-dichlorophenol by Ni-Fe nanoparticles in the presence of humic acid[J]. J Hazard Mater, 2009, 165: 78-86
[11]  吴楠, 乔敏. 土壤环境中四环素类抗生素残留及抗性基因污染的研究进展[J]. 生态毒理学报, 2010, 5(5): 618-627
[12]  Filiz A, Fikret K. Advanced oxidation of amoxicillin by Fenton's reagent treatmen[J]. J Hazard Mater, 2010, 179: 622-627
[13]  Jiao S J, Zheng S R, Yin D Q, et al. Aqueous oxytetracycline degradation and the toxicity change of degradation compounds in photoirradiation process[J]. J Environ Sci, 2008, 20: 806-813
[14]  李铁龙, 康海彦, 刘海水, 等. 纳米铁的制备及其还原硝酸盐氮的产物与机理[J]. 环境化学, 2006, 25(3): 294-296
[15]  张选军, 戴友芝, 宋勇等. 超声波协同纳米铁降解2,4-二氯苯酚的研究[J]. 湘潭大学自然科学学报,2005,27(3):87-90
[16]  于新, 豆小敏, 张艳素, 等. 反应条件对零价铁去除As(Ⅲ)动力学的影响[J]. 环境化学, 2011, 30(5): 1011-1017
[17]  Zhang X, Lin S, Chen Z L, et al. Kaolinite-supported nanoscale zero-valent iron for removal of Pb2+ from aqueous solution: Reactivity, characterization and mechanism[J]. Water Res, 2011, 45(11): 3481-3488
[18]  Shi L N, Zhang X, Chen Z L. Removal of Chromium (Ⅵ) from wastewater using bentonite-supported nanoscale zero-valent iron[J]. Water Res, 2011, 45: 886-892
[19]  唐玉斌, 吕锡武, 陈芳艳. 纳米铁降解水中偶氮染料酸性红B的动力学研究[J]. 环境科学与技术, 2006, 29(10): 19-21
[20]  Nurmi J T, Tratnyek P G, Sarathy V, et al. Characterization and properties of metallic iron nanoparticles: Spectroscopy, electrochemistry, and kinetics[J]. Environ Sci Technol, 2005, 39: 1221-1230
[21]  Elliott D W, Zhang W X. Field assessment of nanoscale bimetallic particles for groundwater treatment[J]. Environ Sci Technol, 2001, 35: 4922-4926
[22]  Achintya N B, Sita K, Bret J C, et al. Entrapment of iron nanoparticles in calcium alginate beads for groundwater remediation applications[J]. J Hazard Mater, 2009, 166: 1339-1343
[23]  Antoine G, Almuthanna T, Hala A A. Antibiotic removal from water: Elimination of amoxicillin and ampicillin by microscale and nanoscale iron particles[J]. Environ Pollut, 2009, 157: 1626-1635

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133