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壳聚糖载纳米羟基氧化铁对水中磷的吸附

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杨金梅, 吕建波, 李莞璐, 孙力平, 王少坡, 程方. 壳聚糖载纳米羟基氧化铁对水中磷的吸附[J]. 环境工程学报, 2018, 12(5): 1286-1294. doi: 10.12030/j.cjee.201710002
引用本文: 杨金梅, 吕建波, 李莞璐, 孙力平, 王少坡, 程方. 壳聚糖载纳米羟基氧化铁对水中磷的吸附[J]. 环境工程学报, 2018, 12(5): 1286-1294. doi: 10.12030/j.cjee.201710002
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YANG Jinmei, LYU Jianbo, LI Wanlu, SUN Liping, WANG Shaopo, CHENG Fang. Adsorption of phosphate by nano akaganeite impregnated chitosan[J]. Chinese Journal of Environmental Engineering, 2018, 12(5): 1286-1294. doi: 10.12030/j.cjee.201710002
Citation: YANG Jinmei, LYU Jianbo, LI Wanlu, SUN Liping, WANG Shaopo, CHENG Fang. Adsorption of phosphate by nano akaganeite impregnated chitosan[J]. Chinese Journal of Environmental Engineering, 2018, 12(5): 1286-1294. doi: 10.12030/j.cjee.201710002
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壳聚糖载纳米羟基氧化铁对水中磷的吸附

  • 1.

    天津城建大学环境与市政工程学院，天津 300384

  • 2.

    天津市水质科学与技术重点实验室，天津 300384

  • 基金项目:

    国家自然科学基金资助项目（51478292）

    天津市自然科学基金资助项目 （12JCYBJC14800）

    天津市水质科学与技术重点实验室开放基金资助项目（TJKLAST-PT-2016-05）

    国家水体污染控制与治理科技重大专项 （2017ZX07107-002-4）

Adsorption of phosphate by nano akaganeite impregnated chitosan

  • 1.

    School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjing 300384, China

  • 2.

    Key Laboratory of Water Quality Science and Technology, Tianjing 300384, China

  • Fund Project:

  • 摘要: 低浓度的磷在污水处理中较难去除，排放至水体会造成水体富营养化。采用溶胶-凝胶法，以壳聚糖和FeCl3·6H2O为原料，通过原位水解-浸渍法制备出壳聚糖载纳米羟基氧化铁（CNFeOOH），对其进行了场发射透射电镜（HRTEM）、比表面积和孔径、X射线衍射仪（XRD）分析的表征。结果表明，CNFeOOH中含有类似正方针铁矿（β-FeOOH）的晶体结构，呈纳米棒状分布，长约10 nm，宽约2~3 nm，比表面积为76.240 m2·g-1。磷吸附实验结果表明：Freundlich吸附等温式能更好地描述CNFeOOH对磷的吸附特征，其实际最大吸附量为24.50 mg·g-1（pH=6，T=（20±1）℃）；动力学吸附平衡时间约为24 h，其吸附过程符合准二级动力学模式和颗粒内扩散模式，证明吸附过程中同时发生了物理吸附和化学吸附；溶液的pH对CNFeOOH吸附磷的影响较为明显，随pH升高，吸附量降低；离子强度（0.01~0.5 mol·L-1）则影响不大；共存阴离子（SO42- 、NO3- 、HCO3-）对磷的吸附影响较小。因此，推断CNFeOOH对磷的吸附机理是以静电引力和配位作用为主的特性吸附。
    Abstract: Low-concentration phosphate is difficult to be removed during wastewater treatment process, whose excessive discharge into surface water could cause eutrophication. A novel sorbent of rod-like nano akaganeite impregnated chitosan (CNFeOOH) was fabricated via in-situ hydrolysis and impregnation technique using FeCl3·6H2O and chitosan in this study. The sorbent was characterized using multiple techniques and its performance for phosphate (PO43-) removal from aqueous solution was investigated. Analyses including high resolution transmission electron microscopy (HRTEM), Brunauer-Emmett-Teller (BET) surface area and pore size distribution , X-ray diffraction (XRD) confirmed the structural characteristics of the sorbent. Above results indicated that the iron oxide particles in CNFeOOH is nano akaganeite (β-FeOOH) , whose shape was rod-like with a length of about 10 nm and a width of about 2 to 3 nm. The specific surface area of CNFeOOH was about 76.240 m2·g-1. The data obtained from batch experiments could be well described using Freundlich isotherm model. Meanwhile, the maximum adsorption capacity was 24.50 mg·g-1 when the solution pH was 6 at room temperature. CNFeOOH had a high adsorption rate towards phosphate, which was fitted better with the pseudo-second-order kinetics model. The sorption of phosphate on CNFeOOH was strongly dependent on pH, whereas its sorption was weakly dependent on ionic strength and coexisting SO42-, NO3- and HCO3-. It can be inferred from above analyses that phosphate adsorption mechanism on the CNFeOOH surface was dominated by electrostatic attraction and ligand exchange.
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  • [1] CONLEY D J, PAERL H W, HOWARTH R W, et al.Controlling eutrophication: Nitrogen and phosphorus[J].Science,2009,323(5917):1014–1015 10.1126/science.1167755
    [2] PAN B, WU J, PAN B, et al.Development of polymer-based nanosized hydrated ferric oxides (HFOs) for enhanced phosphate removal from waste effluents[J].Water Research,2009,43(17):4421–4429 10.1016/j.watres.2009.06.055
    [3] LU S G, BAI S Q, ZHU L, et al.Removal mechanism of phosphate from aqueous solution by fly ash[J].Journal of Hazardous Materials,2009,161(1):95-101 10.1016/j.jhazmat.2008.02.123
    [4] YE J, CONG X, ZHANG P, et al.Preparation of a new granular acid-activated neutralized red mud and evaluation of its performance for phosphate adsorption[J].ACS Sustainable Chemistry & Engineering,2015,3(12):3324–3331 10.1021/acssuschemeng.5b00932
    [5] ZENG L, LI X, LIU J.Adsorptive removal of phosphate from aqueous solutions using iron oxide tailings[J].Water Research,2004,38(5):1318–1326 10.1016/j.watres.2003.12.009
    [6] ZENG H, FISHER B, GIAMMAR D E.Individual and competitive adsorption of arsenate and phosphate to a high-surface-area iron oxide-based sorbent[J].Environmental Science & Technology,2008,42(1):147–152 10.1021/es071553d
    [7] WU K, LIU T, MA C, et al.The role of Mn oxide doping in phosphate removal by Al-based bimetal oxides: Adsorption behaviors and mechanisms[J].Environmental Science & Pollution Research International,2014,21(1):620–630 10.1007/s11356-013-1937-x
    [8] 李海宁, 陈静, 李秋梅,等. 铁锰复合氧化物包覆海砂的吸附除磷研究[J]. 环境科学学报, 2016,36(3):880–886 10.13671/j.hjkxxb.2015.0458
    [9] SAHARAN P, CHAUDHARY G R, MEHTA S K, et al.Removal of water contaminants by iron oxide nanomaterials[J].Journal of Nanoscience & Nanotechnology,2014,14(1):627–643 10.1166/jnn.2014.9053
    [10] LIU C, BAI R.Recent advances in chitosan and its derivatives as adsorbents for removal of pollutants from water and wastewater[J].Current Opinion in Chemical Engineering,2014,4:62–70 10.1016/j.coche.2014.01.004
    [11] HE J, BARDELLI F, GEHIN A, et al.Novel chitosan goethite bionanocomposite beads for arsenic remediation[J].Water Research,2016,101:1–9 10.1016/j.watres.2016.05.032
    [12] YAMAIN J S, LOUNSBURY A W, ZIMMERMAN J B.Adsorption of selenite and selenate by nanocrystalline aluminum oxide, neat and impregnated in chitosan beads[J].Water Research,2014,50(3):373–381 10.1016/j.watres.2013.10.054
    [13] JIANG H, CHEN P, LUO S, et al.Synthesis of novel biocompatible composite Fe3O4/ZrO2/chitosan and its application for dye removal[J].Journal of Inorganic & Organometallic Polymers & Materials,2013,23(2):393–400 10.1007/s10904-012-9792-7
    [14] 闵伶俐, 郑煜铭, 钟鹭斌,等. 铁氧化物/壳聚糖复合纳米纤维的制备及吸附五价砷研究[J]. 环境科学学报,2014,34(12):2979–2984 10.13671/j.hjkxxb.2014.0688
    [15] SOWMYA A, MEENAKSHI S.Zr(IV) loaded cross-linked chitosan beads with enhanced surface area for the removal of nitrate and phosphate[J].International Journal of Biological Macromolecules,2014,69(8):336–343 10.1016/j.ijbiomac.2014.05.043
    [16] LAGERGREEN S.Zur theorie der sogenannten adsorption gel?ster stoffe[J].Zeitschrift Für Chemie Und Industrie Der Kolloide,1907,2(1):15
    [17] HO Y S, MCKAY G, WASE D A J, et al.Study of the sorption of divalent metal ions on to peat[J].Adsorption Science & Technology,2000,18(7):639–650 10.1260/0263617001493693
    [18] CHIEN S H, CLAYTON W R.Application of Elovich equation to the kinetics of phosphate release and sorption in soils[J].Soil Science Society of America Journal,1980, 44(2):265–268 10.2136/sssaj1980.03615995004400020013x
    [19] WEBER W J, MORRIS J C.Kinetics of adsorption on carbon from solution[J].Asce Sanitary Engineering Division Journal,1963,1(2):1–2
    [20] 王永亮. 壳聚糖水凝胶诱导合成纳米Fe3O4及同心层状磁性水凝胶构建[D]. 哈尔滨:哈尔滨工业大学, 2011
    [21] MOHAPATRA M, HARIPRASAD D, MOHAPATRA L, et al.Mg-doped nano ferrihydrite：A new adsorbent for fluoride removal from aqueous solutions[J].Applied Surface Science,2012,258(10):4228–4236 10.1016/j.apsusc.2011.12.047
    [22] 付军, 范芳, 李海宁,等. 铁锰复合氧化物/壳聚糖珠:一种环境友好型除磷吸附剂[J]. 环境科学, 2016,137(12):4882–4890 10.13227/j.hjkx.201608168
    [23] 丁伟, 巴图其木格, 张玲玲,等. 自燃煤矸石吸附磷的动力学和热力学[J]. 环境工程学报, 2017,11(7):4059–4066 10.12030/j.cjee.201604165
    [24] OLIVEIRA M, ARAUJO A, AZEVEDO G, et al.Kinetic and equilibrium studies of phosphorous adsorption: Effect of physical and chemical properties of adsorption agent[J].Ecological Engineering,2015,82:527–530 10.1016/j.ecoleng.2015.05.020
    [25] 程翔．类水滑石吸附和蓝铁石沉淀回收污水中磷的研究[D]．哈尔滨:哈尔滨工业大学，2010
    [26] CHEUNG W H, SZETO Y S, MCKAY G.Intraparticle diffusion processes during acid dye adsorption onto chitosan[J].Bioresource Technology,2007,98(15):2897–2904 10.1016/j.biortech.2006.09.045
    [27] TIAN S, JIANG P, PING N, et al.Enhanced adsorption removal of phosphate from water by mixed lanthanum/aluminum pillared montmorillonite[J].Chemical Engineering Journal,2009,151(1/2/3):141–148 10.1016/j.cej.2009.02.006
    [28] BISWAS B K, INOUE K, GHIMIRE K N, et al.The adsorption of phosphate from an aquatic environment using metal-loaded orange waste[J].Journal of Colloid and Interface Science,2007,312(2):214–223 10.1016/j.jcis.2007.03.072
    [29] 王慧. 铁氧化物及其胡敏酸复合体对磷酸盐的吸附研究[D]. 武汉:华中农业大学, 2015 10.7666/d.Y2803159
    [30] 周宏光. 载纳米水合氧化铁复合半焦的研制及其除磷性能研究[D]. 重庆:西南大学, 2014
    [31] 黄微雅. 功能化改性无机除磷吸附剂的制备及吸附性能研究[D]. 广州:暨南大学, 2013
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  • 刊出日期:  2018-05-19

壳聚糖载纳米羟基氧化铁对水中磷的吸附

  • 1. 天津城建大学环境与市政工程学院，天津 300384
  • 2. 天津市水质科学与技术重点实验室，天津 300384
基金项目:

国家自然科学基金资助项目（51478292）

天津市自然科学基金资助项目 （12JCYBJC14800）

天津市水质科学与技术重点实验室开放基金资助项目（TJKLAST-PT-2016-05）

国家水体污染控制与治理科技重大专项 （2017ZX07107-002-4）

摘要: 低浓度的磷在污水处理中较难去除，排放至水体会造成水体富营养化。采用溶胶-凝胶法，以壳聚糖和FeCl3·6H2O为原料，通过原位水解-浸渍法制备出壳聚糖载纳米羟基氧化铁（CNFeOOH），对其进行了场发射透射电镜（HRTEM）、比表面积和孔径、X射线衍射仪（XRD）分析的表征。结果表明，CNFeOOH中含有类似正方针铁矿（β-FeOOH）的晶体结构，呈纳米棒状分布，长约10 nm，宽约2~3 nm，比表面积为76.240 m2·g-1。磷吸附实验结果表明：Freundlich吸附等温式能更好地描述CNFeOOH对磷的吸附特征，其实际最大吸附量为24.50 mg·g-1（pH=6，T=（20±1）℃）；动力学吸附平衡时间约为24 h，其吸附过程符合准二级动力学模式和颗粒内扩散模式，证明吸附过程中同时发生了物理吸附和化学吸附；溶液的pH对CNFeOOH吸附磷的影响较为明显，随pH升高，吸附量降低；离子强度（0.01~0.5 mol·L-1）则影响不大；共存阴离子（SO42- 、NO3- 、HCO3-）对磷的吸附影响较小。因此，推断CNFeOOH对磷的吸附机理是以静电引力和配位作用为主的特性吸附。

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