以甲基丙烯酸缩水甘油酯(GMA)和正辛胺(OA)为单体,聚丙烯非织造布(PP)为基体,采用一步开环法制备了一种新型的两亲性吸附剂(PP-g-GMA-OA)。采用傅里叶变换红外光谱(FT-IR)、扫描电子显微镜(SEM)和接触角测量仪对改性前后PP非织造布的表面化学组成、表面形貌及润湿性能进行分析。采用批量实验法研究其对壬基酚(NP)的吸附行为,主要考察了pH、离子强度及温度对NP吸附效果的影响,并探讨了PP-g-GMA-OA的解吸和再生性能。结果表明,当溶液pH值为9,氯化钠浓度为0.04mol/L,温度为15℃时,PP-g-GMA-OA对NP的吸附效果达到最好,最大吸附量183.2mg/g,且在5次吸附-解吸循环后,吸附效率仍能达到原吸附量的93%。
A novel design of amphiphilic polypropylene nonwoven (PP-g-GMA-OA) were obtained by the glycidyl methacrylate (GMA) and n-octylamine (OA) via one-step ring-open reaction,and then to investigate their adsorption behaviors for the removal of nonylphenol (NP) in water.The fourier transform infrared (FT-IR) and scanning electron microscopy (SEM) spectrum were used to investigate the chemical composition and surface morphologies of PP-g-GMA-OA,and the wettability was measured by a contact angle analyzer.The research basically included some influencing factors such as pH,ionic strength and temperature.The results showed that the presence of NaCl in the solution could slightly facilitated the adsorption process,and the strong acid or alkali and higher temperature conditions of solution were unfavorable,and the maximum adsorption capacity of NP on PP-g-GMA-(n-OA) were 183.2mg/L.Meanwhile,the thermodynamic parameters demonstrated that the adsorption reaction was a spontaneous and exothermic process.In additional,the composites still exhibited excellent adsorption capacity after multiple desorption-adsorption cycles.These findings indicated that PP-g-GMA-(n-OA) was a promising adsorbent for the efficient elimination of NP in aqueous solution due to its excellent adsorption performance and chemical stability.
[1]Fan Z L,Hu J Y,An W,et al.Detection and occurrence of chlorinated byproducts of bisphenol A,nonylphenol,and estrogens in drinking water of China:comparison to the parent compounds[J].Environ Sci Technol,2013,47(19):10841-10850.
[2]Huang J,Zhang X,Liu S,et al.Development of molecularly imprinted electrochemical sensor with titanium oxide and gold nanomaterials enhanced technique for determination of 4-nonylphenol[J].Sens Actuators B,2011,152(2):292-298.
[3]Gao P,Li Z Y,Gibson M,Gao H W.Ecological risk assessment of nonylphenol in coastal waters of China based on species sensitivity distribution model[J].Chemosphere,2014,104:113-119.
[4]Quan F,Hu Y,Liu X X,et al.The cooperative adsorption properties of cetyl/amino-SBA-15 for 4-nonylphenol[J].Phys Chem Chem Phys,2015,17(29):19491-19409.
[5]Soares A,Guieysse B,Jefferson B,et al.Nonylphenol in the environment:a critical review on occurrence,fate,toxicity and treatment in wastewaters[J].Environ Int,2008,34(7):1033-1049.
[6]Omeroglu S,Sanin F D.Fate and degradation kinetics of nonylphenol compounds in aerobic batch digesters[J].Water Research,2014,64:1-12.
[7]Lu Z J,Gan J.Oxidation of nonylphenol and octylphenol by manganese dioxide:kinetics and pathways[J].Environ Pollu,2013,180:214-220.
[8]Jin Z X,Wang X X,Sun Y B,et al.Adsorption of 4-n-Nonylphenol and bisphenol-a on magnetic reduced graphene oxides:a combined experimental and theoretical studies[J].Environ Sci Technol,2015,49(15):9168-9175.
[9]Thakur V K,Vennerberg D,Kessler M R.Green aqueous surface modification of polypropylene for novel polymer nanocomposites[J].ACS Appl Mater Interfaces,2014,6(12):9349-9356.
[10]Li T Y,Chen S X,Li H C,et al.Preparation of an ion-imprinted fiber for the selective removal of Cu2+[J].Langmuir,2011,27(11):6753-6758.
[11]Zhou X Y,Wei J F,Zhang H,et al.Adsorption of phthalic acid esters (PAEs) by amphiphilic polypropylene nonwoven from aqueous solution:the study of hydrophilic and hydrophobic microdomain[J].J Hazard Mater,2014,273:61-69.
[12]Liu W,Yang Q,Yang Z L,et al.Adsorption of 2,4-D on magnetic graphene and mechanism study[J].Colloid Surface A,2016,509:367-375.
[13]Ince N H,Gultekin I,Tezcanli-Guyer G.Sonochemical destruction of nonylphenol:effects of pH and hydroxyl radical scavengers[J].J Hazard Mater,2009,172(2/3):739-743.
[14]Zhang S J,Shao T,Karanfil T,et al.Adsorption of synthetic organic chemicals by carbon nanotubes:effects of background solution chemistry[J].Water Research,2010,44(6):2067-2074.
[15]Zhang Y B,Ali S F,Dervishi E,et al.Cytotoxicity effects of graphene and single-wall carbon nanotubes in neural phaeochromocytoma-derived PC12 cells[J].ACS Nano,2010,4(6):3181-3186.
[16]Maszkowska J,Wagil M,Mioduszewska K,et al.Thermodynamic studies for adsorption of ionizable pharmaceuticals onto soil[J].Chemosphere,2014,111:568-574.
基金资助
国家自然科学基金项目(51678409);天津市科技支撑计划重点项目(15ZCZDSF00880)
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