Performance of a non-phosphorus antiscalant on inhibition of calcium-sulfate precipitation

被引：15
作者：
Xue, Xiaoxu [1 ]
Fu, Change [2 ]
Li, Na [1 ]
Zheng, Fangfang [1 ]
Yang, Weiben [1 ]
Yang, Xiaodi [1 ]
机构：
[1] Nanjing Normal Univ, Coll Chem & Mat Sci, Nanjing 210097, Jiangsu, Peoples R China
[2] Nanjing Coll Chem Technol, Nanjing 210048, Jiangsu, Peoples R China
来源：
WATER SCIENCE AND TECHNOLOGY | 2012年 / 66卷 / 01期
关键词：
antiscalant; calcium sulfate; industrial water; precipitation; SCALE CONTROL; WATER; GYPSUM; PHOSPHATE; DESALINATION; COPOLYMERS;
D O I：
10.2166/wst.2012.157
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The aim of this study is to report on the performance of a novel non-phosphorus antiscalant, acrylic acid (AA)-allylpolyethoxy carboxylate (APEC), being developed for calcium-sulfate scale inhibition in industrial water systems. The performance of AA-APEC on calcium-sulfate scale inhibition was compared with that of the two commercial inhibitors, polyamino polyether methylene phosphonates (PAPEMP) and polyacrylic acid (PAA), containing the same polyethylene glycol segments or carboxyl functional groups as AA-APEC. The study indicated that AA-APEC could act as a highly effective calcium sulfate inhibitor, having strong ability to inhibit the precipitation of calcium sulfate at a dosage of 2 mg L-1, showing approximately 83.6% inhibition. The results also showed that AA-APEC dosage, the solution pH, inhibiting temperature, concentration of Ca2+, and SO42- all play important roles in inhibiting calcium-sulfate precipitation. The precipitation thermodynamics and kinetics at different temperatures were also discussed. X-ray diffractometer (XRD) and scanning electron microscope (SEM) analysis showed that AA-APEC strongly affected the texture and the morphology of the deposited calcium sulfate. Calcium sulfate has been inhibited through stabilization by adsorption onto crystal growth sites of nascent crystals altering their morphology.
引用
收藏
页码：193 / 200
页数：8
相关论文
共 25 条
  • [1] CALCIUM-SULFATE DIHYDRATE (GYPSUM) SCALE FORMATION ON HEAT-EXCHANGER SURFACES - THE INFLUENCE OF SCALE INHIBITORS
    AMJAD, Z
    [J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1988, 123 (02) : 523 - 536
  • [2] Influence of a polyacrylate antiscalant on gypsum nucleation and growth
    Ben Ahmed, S.
    Tlili, M. M.
    Ben Amor, N.
    [J]. CRYSTAL RESEARCH AND TECHNOLOGY, 2008, 43 (09) : 935 - 942
  • [3] Calcium sulphate scale prevention in a desalination unit using the SMCEC technique
    Ben Ahmed, S
    Tlili, A
    Ben Amor, A
    Ben Bacha, H
    Elleuch, B
    [J]. DESALINATION, 2004, 167 (1-3) : 311 - 318
  • [4] Davies C. W., 1962, ION ASS, P38
  • [5] Gypsum scale control by phosphate ester
    El Dahan, HA
    Hegazy, HS
    [J]. DESALINATION, 2000, 127 (02) : 111 - 118
  • [6] Preparation and Characterization of a Phosphorous Free and Non-Nitrogen Antiscalant in Industrial Cooling Systems
    Fu, C.
    Zhou, Y.
    Huang, J.
    Xie, H.
    Liu, G.
    Wu, W.
    Sun, W.
    [J]. TENSIDE SURFACTANTS DETERGENTS, 2011, 48 (01) : 60 - 66
  • [7] Novel Non-phosphorous Antiscalants for Inhibition of Calcium Phosphate and Calcium Sulfate Precipitation
    Fu, Change
    Zhou, Yuming
    Liu, Guangqing
    [J]. FUNDAMENTAL OF CHEMICAL ENGINEERING, PTS 1-3, 2011, 233-235 : 117 - 123
  • [8] Impacts of different antiscalant dosing rates and their thermal performance in Multi Stage Flash (MSF) distiller in Kuwait
    Ghani, Saud
    Al-Deffeeri, Noura S.
    [J]. DESALINATION, 2010, 250 (01) : 463 - 472
  • [9] A novel inhibitor for scale control in water desalination
    Gill, JS
    [J]. DESALINATION, 1999, 124 (1-3) : 43 - 50
  • [10] On-off control of enzymatic activity synchronizing with reversible formation of supramolecular assembly from enzyme and charged block copolymers
    Harada, A
    Kataoka, K
    [J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1999, 121 (39) : 9241 - 9242
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