Removal of organic matters and bacteria by nano-MgO/GAC system

被引：17
作者：
An, Yi [1 ]
Zhang, Keqiang [1 ]
Wang, Feng [1 ]
Lin, Lingling [1 ]
Guo, Haigang [1 ]
机构：
[1] Tianjin Key Lab Agroenvironm, Tianjin 300191, Peoples R China
来源：
DESALINATION | 2011年 / 281卷
关键词：
Nano-MgO; GAC; Organic matter; Bacteria; Fouling; pH; WATER-TREATMENT PROCESSES; DISINFECTION BY-PRODUCTS; NANOFILTRATION MEMBRANES; SURFACE; NANOPARTICLES; PRETREATMENT; MOBILITY; SIZE;
D O I：
10.1016/j.desal.2011.07.035
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Membrane fouling is a critical problem for efficient commercialization of nanofiltration plants. A nano-MgO/GAC (Granular Activated Carbon) process was investigated the feasibility of using as pre-treatment for nanofiltration. Based on the results obtained, nano-MgO could decrease 51% of Permanganate Index (COD(Mn)), 60% of the ultraviolet absorbance at 254 nm (UVA(254)), and more than 99% of colony counts within 6 h. The pH increased to about 10.30 within only 0.5 h and then kept stable in the system containing nano-MgO. In addition, adding GAC led to less organic matters (remaining 4.74 mg.L(-1) versus 6.80 mg.L(-1)) and bacteria (13 CFU.mL(-1) versus 15 CFU.mL(-1)) relative to using nano-MgO only. Furthermore, almost all nano-MgO could be adsorbed by the GAC column. The pH value of the effluents from the nano-Mg and GAC was 10.18 and 10.20, respectively, while that of the effluent after KH(2)PO(4) adjustment could keep about 7.10. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：30 / 34
页数：5
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共 24 条
  • [1] Removal of antibiotics from surface and distilled water in conventional water treatment processes
    Adams, C
    Wang, Y
    Loftin, K
    Meyer, M
    [J]. JOURNAL OF ENVIRONMENTAL ENGINEERING-ASCE, 2002, 128 (03): : 253 - 260
  • [2] Change in membrane performance due to organic fouling in nanofiltration (NF)/reverse osmosis (RO) applications
    Agenson, Kenneth O.
    Urase, Taro
    [J]. SEPARATION AND PURIFICATION TECHNOLOGY, 2007, 55 (02) : 147 - 156
  • [3] China E. P. B. O, 2002, ANAL METHODS WATER W
  • [4] Nanofiltration process for separating Cr(III) from acid solutions: Experimental and modelling analysis
    Gomes, Salome
    Cavaco, Sofia A.
    Quina, Margarida J.
    Gando-Ferreira, Licinio M.
    [J]. DESALINATION, 2010, 254 (1-3) : 80 - 89
  • [5] Modeled Environmental Concentrations of Engineered Nanomaterials (TiO2, ZnO, Ag, CNT, Fullerenes) for Different Regions
    Gottschalk, Fadri
    Sonderer, Tobias
    Scholz, Roland W.
    Nowack, Bernd
    [J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2009, 43 (24) : 9216 - 9222
  • [6] Weight of evidence for an association between adverse reproductive and developmental effects and exposure to disinfection by-products: A critical review
    Graves, CG
    Matanoski, GM
    Tardiff, RG
    [J]. REGULATORY TOXICOLOGY AND PHARMACOLOGY, 2001, 34 (02) : 103 - 124
  • [7] Controllable preparation of nano-MgO and investigation of its bactericidal properties
    Huang, L
    Li, DQ
    Lin, YJ
    Wei, M
    Evans, DG
    Duan, X
    [J]. JOURNAL OF INORGANIC BIOCHEMISTRY, 2005, 99 (05) : 986 - 993
  • [8] Redispersion and reactivity studies on surfactant-coated magnesium oxide nanoparticles
    Jeevanandam, P
    Klabunde, KJ
    [J]. LANGMUIR, 2003, 19 (13) : 5491 - 5495
  • [9] Mercury vapor release from broken compact fluorescent lamps and in situ capture by new nanomaterial sorbents
    Johnson, Natalie C.
    Manchester, Shawn
    Sarin, Love
    Gao, Yuming
    Kulaots, Indrek
    Hurt, Robert H.
    [J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2008, 42 (15) : 5772 - 5778
  • [10] Natural Organic Matter Enhanced Mobility of Nano Zerovalent Iron
    Johnson, Richard L.
    Johnson, Graham O'Brien
    Nurmi, James T.
    Tratnyek, Paul G.
    [J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2009, 43 (14) : 5455 - 5460
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