Page 210 - 《精细化工》2020年第9期
P. 210
·1924· 精细化工 FINE CHEMICALS 第 37 卷
溶液中主要的磷形态是H 3PO 4,H 3PO 4 与ES@Fe 3O 4-La Engineering Journal, 2015, 271: 204-213.
的结合较弱,吸附能力差 [40] 。2.13<pH<7.20 时,主 [5] LI Y Z, LIU C J, LUAN Z K, et al. Phosphate removal from aqueous
solutions using raw and activated red mud and fly ash[J]. Journal of
–
要的磷形态转化为 H 2 PO 4 ,ES@Fe 3 O 4 -La 表面通过 Hazardous Materials, 2006, 137(1): 374-383.
–
质子化带正电荷。因此,H 2 PO 4 被静电力吸附在 [6] YANG X F(杨徐烽).Discussion on the process of phosphorus
removal from wastewater [J].Energy Conservation & Environmental
ES@Fe 3 O 4 -La 上。当溶液 pH>7.20 时,ES@Fe 3 O 4 -La
Protection(节能与环保),2020,(3):48-49.
去质子化,吸附剂表面带负电荷,主要的磷形态为 [7] SONG P P, YANG Z H, XU H Y, et al. Investigation of influencing
2–
HPO 4 。静电排斥对于磷酸盐吸附产生阻碍作用, factors and mechanism of antimony and arsenic removal by
electrocoagulation using Fe-Al electrodes[J]. Industrial & Engineering
–
且水中 OH 浓度逐渐增大,和磷酸盐阴离子竞争作 Chemistry Research, 2014, 53(33): 12911-12919.
用逐渐增强,吸附量有所降低。但是,碱性条件下 [8] HE W J (何雯菁), YANG S M (杨曙明), ZHANG G Y (张国友).
的 ES@Fe 3 O 4 -La 依然表现出较好的磷酸盐去除效 Recent studies on eggshell as adsorption material[J]. Transactions of
the Chinese Society of Agricultural Engineering (农业工程学报),
果。原因可能是 ES@Fe 3 O 4 -La 表面覆盖了氢氧化镧 2016, 32(S2): 297-303.
活性层,对于磷酸盐的亲和作用充分补偿了静电排 [9] LAJTHA K, BLOOMER S H. Factors affecting phosphate sorption
and phosphate retention in a desert ecosystem[J]. Soil Science, 1988,
斥作用。在溶液 pH 较高时路易斯酸碱作用是脱除 146(3): 160-167.
磷酸盐的主要作用 [36] ,因为路易斯酸碱作用是镧与 [10] KARAGEORGIOU K, PASCHALIS M, ANASTASSAKIS G N.
磷酸盐的特异性结合作用的化学基础。此外,镧与 Removal of phosphate species from solution by adsorption onto
calcite used as natural adsorbent[J]. Journal of Hazardous Materials,
磷酸盐之间还可能存在配体交换作用。同时,Ca 2+
2007, 139(3): 447-452.
2–
与 HPO 4 在 ES@Fe 3 O 4 -La 表面生成 CaHPO 4 沉淀, [11] KAASIK A, VOHLA C, MOTLEP R, et al. Hydrated calcareous
可进一步增加除磷效率 [22] 。 oil-shale ash as potential filter media for phosphorus removal in
constructed wetlands[J].Water Research, 2008, 42(4/5): 1315-1323.
[12] SHARIATMADARI H, SHIRVANI M, JAFARI A. Phosphorus
3 结论 release kinetics and availability in calcareous soils of selected arid
and semiarid toposequences[J]. Geoderma, 2006, 132(3/4): 261-272.
ES@Fe 3 O 4 -La 的 X 射线荧光光谱、X 射线衍射、 [13] LAMMIE D, BAIN M M, WESS T J. Microfocus X-ray scattering
investigations of eggshell nanotexture[J]. Journal of Synchrotron
傅里叶变换红外光谱和粒度分析结果表明:Fe 3 O 4
Radiation, 2005, 12(6): 721-726.
和 La 均成功载入鸡蛋壳。 [14] YAN J J (闫久菊), WU L P (吴丽萍), WEN K J (文科军), et al.
与 ES 相比,ES@Fe 3 O 4 -La 能够明显提高对磷 Absorption performance of phosphorus on high-temperature modified
eggshell in wastewater[J]. Journal of Tianjin Chengjian University
酸盐的吸附,25 ℃下 ES@Fe 3 O 4 -La 对磷酸盐的 q max
(天津城建大学学报), 2019, 25(1): 46-50.
为 18.02 mg/g,而 ES 上的 q max 仅为 2.58 mg/g; [15] CHEN T (陈天). Study on the removal of phosphorus from waste
ES@Fe 3 O 4 -La 对磷酸盐的吸附是吸热过程,在 25~ water by modified egg shells[D]. Nanjing: Nanjing University of
Information Science and Technology (南京信息工程大学), 2011.
40 ℃内,温度升高有利于 ES@Fe 3 O 4 -La 对磷酸盐吸
[16] NING P (宁平), LI B (李彬), YANG Y H (杨月红), et al. Rare earth
附的 自发进行; ES@Fe 3 O 4 -La 吸附等温 线符 合 sorbent for dynamic phosphate removal in slightly polluted water[J].
Langmuir 方程,为单分子层吸附;ES@Fe 3O 4-La 对磷 Journal of the Chinese Rare Earth Society (中国稀土学报), 2005,
23(S2): 121-124.
酸盐的吸附动力学过程遵循准二级反应动力学模型; [17] SI J (司静), LU S Y (卢少勇), JIN X C (金相灿), et al. Effect of pH
溶液初始 pH 显著影响 ES@Fe 3 O 4 -La 对磷酸盐的吸 value and light on La-modified bentonite adsorption of phosphorus
附效果,当 pH 为 4 左右时,ES@Fe 3 O 4 -La 对磷酸 and nitrogen in water[J]. China Environmental Science (中国环境科
学), 2009, 29(9): 946-950.
盐的吸附效果最佳。 [18] PHAM T, LEE K, KIM M S,et al. La-modified ZSM-5 zeolite beads
后期会采用实际废水进行研究来考察吸附剂实 for enhancement in removal and recovery of phosphate[J]. Microporous
and Mesoporous Materials, 2019, 279: 37-44.
际应用情况,并对吸附机理进行进一步探究。
[19] KUROKI V, BOSCO G E, FADINI P S, et al. Use of a La(Ⅲ)-
modified bentonite for effective phosphate removal from aqueous
参考文献: media[J]. Journal of Hazardous Materials, 2014, 274: 124-131.
[1] WILFERT P, KUMAR P S, KORVING L, et al. The relevance of [20] LAI L, XIE Q, CHI L N,et al. Adsorption of phosphate from water
phosphorus and iron chemistry to the recovery of phosphorus from by easily separable Fe 3O 4@SiO 2 core/shell magnetic nanoparticles
wastewater: A review[J]. Environmental Science & Technology, functionalized with hydrous lanthanum oxide[J]. Journal of Colloid
2015, 49(16): 9400-9414. and Interface Science, 2016, 465: 76-82.
[2] JIANG H T (蒋和团). Synthesis analysis of the pollution treatment [21] ZHOU F Z (周凤珍). Study on phosphorus removal from water by
of wastewater from soybean protein isolation production[J]. magnetic lanthanum modified Ca-montmorillonite and its recovery[D].
Industrial Water Treatment (工业水处理), 2010, 30(4): 77-80. Wuhan: Hubei University of Technology (湖北工业大学), 2019.
[3] RITTMANN B E, MAYER B, WESTERHOFF P, et al. Capturing [22] SONG X B (宋小宝), HE S Y (何世颖), FENG Y F (冯彦房), et al.
the lost phosphorus[J]. Chemosphere, 2011, 84(6): 846-853. Fabrication of La-MHTC composites for phosphate removal:
[4] GUAYA D, VALDERRAMA C, FARRAN A, et al. Simultaneous Adsorption behavior and mechanism[J]. Environmental Science (环
phosphate and ammonium removal from aqueous solution by a 境科学), 2020, 41(2): 773-783.
hydrated aluminum oxide modified natural zeolite[J]. Chemical [23] WU B, FANG L, FORTNER J D, et al. Highly efficient and selective