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底泥加入铁盐对水体磷的吸收和固定

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李大鹏, 黄勇, 李祥. 底泥加入铁盐对水体磷的吸收和固定[J]. 环境化学, 2013, 32(5): 797-802. doi: 10.7524/j.issn.0254-6108.2013.05.011
引用本文: 李大鹏, 黄勇, 李祥. 底泥加入铁盐对水体磷的吸收和固定[J]. 环境化学, 2013, 32(5): 797-802. doi: 10.7524/j.issn.0254-6108.2013.05.011
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LI Dapeng, HUANG Yong, LI Xiang. Phosphorus adsorption and immobility by sediments with ferric salt addition[J]. Environmental Chemistry, 2013, 32(5): 797-802. doi: 10.7524/j.issn.0254-6108.2013.05.011
Citation: LI Dapeng, HUANG Yong, LI Xiang. Phosphorus adsorption and immobility by sediments with ferric salt addition[J]. Environmental Chemistry, 2013, 32(5): 797-802. doi: 10.7524/j.issn.0254-6108.2013.05.011
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底泥加入铁盐对水体磷的吸收和固定

  • 1.

    苏州科技学院环境科学与工程学院, 苏州, 215011

  • 基金项目:

    国家自然科学基金项目(51178284, 50938005,51278523, 50908154)资助.

Phosphorus adsorption and immobility by sediments with ferric salt addition

  • 1.

    School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215011, China

  • Fund Project:

  • 摘要: 对加入FeCl3的底泥在扰动条件下对外源磷的吸收效果进行研究,并通过内源磷数量分布分析了固定效果.磷吸附等温线结果表明,对FeCl3质量百分比占2%的底泥而言,磷吸附最大值、磷平衡浓度、磷饱和度分别为未加入FeCl3的原底泥的273%、85.7%、60.7%.磷吸附实验结果表明,加入FeCl3的底泥对上覆水中磷的吸收能力增加.FeCl3质量百分比占1%和2%的底泥对外源磷的吸收量分别为未加入FeCl3的原底泥的150%和210%,而达到饱和时间也分别从17 d延长至26 d和35 d.内源磷的主要分布为Fe/Al-P (57.1%—63.4%)、HCl-P(19.9%—28.4%)、NH4Cl-P(12.9%—15.2%).由于FeCl3的加入抑制了Fe/Al-P向HCl-P的转化,加入的外源磷主要形成了藻类可利用磷(AAP).
    Abstract: Phosphorus adsorption was investigated by sediments with ferric chloride addition under sediment disturbance conditions and phosphorus immobility was analyzed by the distribution of sedimentary phosphorus forms. Phosphorus adsorption isotherm results show that phosphorus adsorption maximum, equilibrium solution phosphorus concentration and phosphorus saturation in the sediments with 2% ferric chloride addition were 273%, 85.7% and 60.6% of that in the sediments without ferric chloride addition. The increase of phosphorus adsorption by sediments with ferric chloride addition was observed in the experiments. The accumulative adsorption of external phosphorus by the sediments with 1% and 2% ferric chloride addition was 150% and 210% of that in the sediments without ferric chloride addition. In addition, the time of phosphorus saturation extended from 17 d (without ferric chloride addition) to 26 d (1% ferric chloride addition) and 35 d (2% ferric chloride addition), respectively. The rank order of sedimentary phosphorus forms was Fe/Al-P (57.1%—63.4%), HCl-P (19.9%—28.4%) and NH4Cl-P (12.9%—15.2%). The incorporated phosphorus into sediments accorded mainly algae available phosphorus. The main reason is that the transformation from Fe/Al-P to HCl-P might be inhibited due to ferric chloride addition.
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  • [1] Quaak M, Van der Does J, Boers P, et al. A new technique to reduce internal phosphorus loading by in-take phosphate fixtion in shallow lakes[J]. Hydrobiologia,1993,253:337-344
    [2] Vandermeulen H. Design and testing of propeller aerator for reservoirs[J]. Water Research, 1992, 26(6): 857-861
    [3] Qiu D R, Wu Z B. The restoration of aquatic macrophytes for improving water quality in a hypertrophic shallow lake in Hubei Province, China[J]. Ecological Engineering, 2001,18:147-156
    [4] Slomp C P, Malschaert J F P, Van Raaphorst W. The role of adsorption in sediment water exchange of phosphate on North sea continental margin sediments[J]. Limnology Oceanography, 1998, 43(5): 832-846
    [5] Hieltjes A H, Lijklema L. Fractionation of inorganic phosphate in calcareous sediments[J]. Journal of Environmental Quality, 1980, 9: 405-407
    [6] 徐玉慧,姜霞,金相灿,等. 太湖东北部沉积物生物可利用磷的季节性变化[J].环境科学,2006, 27(5): 869-873
    [7] Lai D Y F, Lam K C. Phosphorus retention and release by sediments in the eutrophic Mai Po Marshes, Hong Kong[J]. Marine Pollution Bulletin, 2008, 57: 349-356
    [8] 李大鹏,黄勇,范成新. 城市重污染河道底泥对外源磷的吸附和固定机制[J]. 环境科学, 2011, 32(1): 96-101
    [9] Saavedra C, Delgado A. Iron-related phosphorus in eroded sediments from agricultural soils of Mediterranean areas[J]. Geoderma, 2005, 125: 1-9
    [10] 周爱民,王东升,汤鸿霄.磷(P)在天然沉积物-水界面上的吸附[J]. 环境科学学报, 2005,25(1): 64-69
    [11] Li D P, Huang Y. Sedimentary phosphorus fractions and bioavailability as influenced by repeated sediment resuspension[J]. Ecological Engineering, 2010, 33(7): 958-962
    [12] Kraal P, Slomp C P, Forster A, et al. Pyrite oxidation during sample storage determines phosphorus fractionation in carbonate-poor anoxic sediments[J]. Geochimica et Cosmochimica Acta, 2009, 73: 3277-3290
    [13] Spears B M, Carvalho L, Perkins R, et al. Sediment phosphorus cycling in a large shallow lake: Spatio-temporal variation in phosphorus pools and release[J]. Hydrobiologia, 2007, 584: 37-48
    [14] 李大鹏,黄勇. 底泥间歇扰动对静止水体磷迁移的累加效应[J].环境化学,2010, 29(6): 1075-1078
    [15] 李大鹏,黄勇.扰动强度对太湖沉积物中磷释放及其形态转化的影响[J]. 环境科学, 2012, 33(8): 2614-2620
    [16] 范成新,张路,包先明,等.太湖沉积物-水界面生源要素迁移机制及定量化—2.磷释放的热力学机制及源-汇转换[J].湖泊科学,2006, 18(3): 207-217
    [17] Li D P, Huang Y, Fan C X, et al. Contributions of phosphorus on sedimentary phosphorus bioavailability under sediment resuspension conditions[J]. Chemical Engineering Journal, 2011, 168:1049-1054
    [18] Rydin E. Potentially mobile phosphorus in lake erken sediment[J]. Water Research, 2000, 34(7): 2037-2042
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  • 收稿日期:  2012-07-25

底泥加入铁盐对水体磷的吸收和固定

  • 1. 苏州科技学院环境科学与工程学院, 苏州, 215011
  • 收稿日期:  2012-07-25
基金项目:

国家自然科学基金项目(51178284, 50938005,51278523, 50908154)资助.

摘要: 对加入FeCl3的底泥在扰动条件下对外源磷的吸收效果进行研究,并通过内源磷数量分布分析了固定效果.磷吸附等温线结果表明,对FeCl3质量百分比占2%的底泥而言,磷吸附最大值、磷平衡浓度、磷饱和度分别为未加入FeCl3的原底泥的273%、85.7%、60.7%.磷吸附实验结果表明,加入FeCl3的底泥对上覆水中磷的吸收能力增加.FeCl3质量百分比占1%和2%的底泥对外源磷的吸收量分别为未加入FeCl3的原底泥的150%和210%,而达到饱和时间也分别从17 d延长至26 d和35 d.内源磷的主要分布为Fe/Al-P (57.1%—63.4%)、HCl-P(19.9%—28.4%)、NH4Cl-P(12.9%—15.2%).由于FeCl3的加入抑制了Fe/Al-P向HCl-P的转化,加入的外源磷主要形成了藻类可利用磷(AAP).

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