Page 91 - 《精细化工》2021年第3期

第 3 期 张 静，等: CA@CS-MMT 复合纳米纤维的制备及对 Cr(Ⅲ)的吸附 ·511·

2.4 CA@CS-MMT-2 再生性能 pollution[J]. Leather Science and Engineering (皮革科学与工程),
1997, 7(1): 33-37.
按 1.4.4 节实验方法对 CA@ CS-MMT-2 的再生 [5] LI X P, BIAN C J, MENG X J, et al. Design and synthesis of an
2+
2+
efficient nanoporous adsorbent for Hg and Pb ions in water[J].
性进行了研究，每个吸附-解吸循环后，将复合纳米 Journal of Materials Chemistry A, 2016, 4(16): 5999-6005.
纤维浸泡在蒸馏水中，室温干燥。如图 13 所示，经 [6] GAO D G (高党鸽), LYU X J (吕秀娟), MA J Z (马建中). Research
process on adsorptive properties of modified montmorillonite for
过 3 次循环实验后，Cr(Ⅲ)的吸 附量仍保持 在 chromium ions[J]. China Leather (中国皮革), 2014, 43(17): 42-46, 50.
[7] WANG D D, HE S Y, SHAN C, et al. Chromium speciation in tannery
99.13 mg/g 以上，这表明 CA@CS-MMT-2 在该实验 effluent after alkaline precipitation: Isolation and characterization[J].
条件下具有较好的再生性能。 Journal of Hazardous Materials, 2016, 316: 169-177.
[8] LI W, LI J, JIN Y, et al. Study on the removal of chromium(Ⅲ) from
leather waste by a two-step method[J]. Journal of Industrial and
Engineering Chemistry, 2019, 79: 172-180.
[9] E TAO, MA H R, LI Y. A cleaner Al 2O 3-ZrO 2/MMT nanocomposite
adsorbent: Based on Al-Zr tanning waste[J]. Journal of the American
Leather Chemists Association, 2014, 109(11): 389-396.
[10] HUANG Y P, MIAO Y E, LIU T X. Electrospun fibrous membranes
for efficient heavy metal removal[J]. Journal of Applied Polymer
Science, 2014, 131(19): 40864.
[11] HE H P (何宏平), GUO J G (郭九皋), XIE X D (谢先德), et al.
2+
2+
2+
Experimental studies on the selective adsorption of Cu , Pb , Zn ,
2+
3+
Cd , Cr ions on montmorillonite, illite and kaolinite and the
influence of medium conditions[J]. Acta Mineralogica Sinica (矿物
学报), 1999, 19(2): 231-235.
[12] WU P X, ZHANG Q, DAI Y P, et al. Adsorption of Cu(Ⅱ), Cd(Ⅱ)
and Cr(Ⅲ) ions from aqueous solutions on humic acid modified
Ca-montmorillonite[J]. Geoderma, 2011, 164(3/4): 215-219.
[13] WANG L (王丽), WANG A Q (王爱勤). Preparation of chitosan/
图 13 CA@CS-MMT-2 的再生性 montmorillonite nanocomposites and their adsorption poperties for
congo red dye[J]. Polymer Materials Science and Engineering (高分
Fig. 13 Regeneration performance of CA@CS-MMT-2 子材料科学与工程), 2007, 23(5): 104-107.
[14] HU F (胡芳), LIU J N (刘俊男), GUO X L (郭雪莲), et al.
3 结论 Preparation of quaternary ammonium chitosan intercalated
montmorillonite and its adsorption property for Cr(Ⅵ)[J]. Plating and
Finishing (电镀与精饰), 2016, 38(11): 6-10.
（1）采用静电纺丝和溶液插层法成功制备了 [15] TAHIR S S, NASEEM R. Removal of Cr( Ⅲ ) from tannery
wastewater by adsorption onto bentonite clay[J]. Journal of Colloid
CA@CS-MMT 复合纳米纤维。CS-MMT 的加入降低 and Interface Science, 2012, 38(5): 24-33.
了纳米纤维的平均直径，且当 CS-MMT 含量为 2% [16] YOSEPH S, JEMAL M Y, ABEBE T. Removal of organic dye and
toxic hexavalent chromium ions by natural clay adsorption[J].
时，其片层在纳米纤维内部形成连续结构。 Desalination and Water Treatment, 2019, 165(10): 222-231.
[17] HUANG C T (黄春桃), LIU G G (刘国光), YAO K (姚琨), et al.
（2）静态吸附研究表明，与 CA 纳米纤维相比， Adsorption of carboxymethyl chitosan-bentonite compound adsorbent
for Cu(Ⅱ), Ni(Ⅱ), Cr(Ⅲ)[J]. Chinese Journal of Environmental
CA@CS-MMT 对水中 Cr(Ⅲ)具有良好的吸附性能， Engineering (高分子材料科学与工程), 2012, 6(12): 4321-4326.
在 CS-MMT 含量为 2%、25 ℃，pH 为 5.5±0.1，Cr(Ⅲ) [18] CHEN D M, LI W, WU Y R, et al. Preparation and characterization
of chitosan/montmorillonite magnetic microspheres and its application
初始质量浓度为 50 mg/L，吸附剂用量为 0.2 g/L 时， for the removal of Cr(Ⅵ)[J]. Chemical Engineering Journal, 2013,
221: 8-15.
拟合最大吸附量可达 144.93 mg/g。CA@CS-MMT-2 [19] CHEN M, WANG C J, FANG W, et al. Electrospining of
具有良好的再生性能，循环 3 次后吸附量仍达 calixarene-functionalized polyacrylonitrile nanofiber membranes and
application as an adsorbent and catalyst support[J].Langmuir, 2013,
99.13 mg/g 以上。 29: 11858-11867.
[20] LIAO Y, LOH C H, TIAN M, et al. Progress in electrospun
（3）吸附行为研究表明，CA@CS-MMT-2 对 polymeric nanofibrous membranes for water treatment: Fabrication,
Cr(Ⅲ)的吸附过程符合 Langmuir 等温吸附模型，吸 modification and applications[J]. Progress in Polymer Science, 2018,
77: 69-94.
附动力学符合准二级动力学模型，以化学吸附为主。 [21] TIAN Y, WU M, LIU R G, et al. Electrospun membrane of cellulose
acetate for heavy metal ion adsorption in water treatment[J].
（4）制备的 CA@CS-MMT 复合纳米纤维具有 Carbohydrate Polymers, 2011, 83(2): 743-748.
原料来源丰富、成本较低、吸附性能优良且吸附后 [22] HOU J Z, SUN X P, ZHANG W X, et al. Preparation and
characterization of electrospun fibers based on poly(L-latic
便于回收和再生的优点，在含 Cr(Ⅲ)废水处理方面 acid)/cellulose acetate[J]. Chinese Journal of Polymer Science, 2012,
30: 916-922.
具有良好的应用潜力和经济价值。 [23] CAI J, LEI M, HE J R Z, et al. Electrospun composite nanofiber mats
of cellulose@organically modified montmorillonite for heavy metal
参考文献： ion removal: Design, characterization, evaluation of absorption
performance[J]. Composites: Part A, 2017, 92: 10-16.
[1] LIU C M (刘昌明), CAO Y J (曹英杰). Water pollution and its [24] HUANG Y P, MIAO Y E, LIU T X. Electrospun fibrous membranes
impact on human health in China[J]. Impact of Science on Society for efficient heavy metal removal[J]. Journal of Applied Polymer
(科学对社会的影响), 2009, (2): 16-22. Science, 2014, 131(19): 5829-5836.
[2] ZOU Z H (邹照华), HE S F (何素芳), HAN C Y (韩彩芸), et al. [25] ZHAO R, LI X, SUN B L, et al. Branched polyethylenimine grafted
Research progress in heavy metal wastewater treatment techniques[J]. electrospun polyacrylonitrile fiber membrane: A novel and effective
Industrial Water Treatment (工业水处理), 2010, 30(6): 17-21. adsorbent for Cr( Ⅵ ) remediation in wastewater[J]. Journal of
[3] SUN W F (孙维锋), XIAO D (肖迪). Status and control technology Materials Chemistry A, 2017, 5(3): 1133-1144.
of heavy metal pollution[J]. Energy and Energy Conservation (能源 [26] HUANG X, LIAO X P, SHI B. Tannin-immobilized mesoporous
与节能), 2012, (2): 49-50. silica bead (BT-SiO 2) as an effective adsorbent of Cr(Ⅲ) in aqueous
[4] TANG K Y (汤克勇). Sources and harmfulness of chromium solutions[J]. Journal of Hazardous Materials, 2010, 173(1/2/3): 33-39.