当前位置: X-MOL 学术J. Taiwan Inst. Chem. E. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Fabrication of polyetherimide nanocomposite membrane with amine functionalised halloysite nanotubes for effective removal of cationic dye effluents
Journal of the Taiwan Institute of Chemical Engineers ( IF 5.7 ) Pub Date : 2018-08-23 , DOI: 10.1016/j.jtice.2018.07.032
Raghavendra S. Hebbar , Arun M. Isloor , Inamuddin , Mohd. Sohaimi Abdullah , A.F. Ismail , Abdullah M. Asiri

Naturally, occurring, low cost and eco-friendly halloysite nanotubes were chemically modified and uniformly immobilised into the polyetherimide membrane matrix with the aim of enhancing the properties and possible cationic dye rejection efficacy. The properties of fabricated nanocomposite membranes were examined by means of porosity, hydrophilicity, zeta potential and permeability. Permeation experiments revealed the enhanced water flux up to 195 L/m2h with 4 wt% additive dosage. The dye rejection efficacy of the prepared membranes was determined by using rhodamine B (Rh.B) and methylene blue (MB). The dye rejection studies were executed in terms of pH, contact time and initial dye concentration. The membrane with 4 wt% of nanomaterial dosage, showed rejection of 97% at pH 8 and 94% at pH 7 for MB and Rh.B dyes, respectively. Langmuir adsorption isotherm is the best model to explain interaction between dye molecules and membrane surface, with quantity of dye adsorbed (qmax) was observed to be 20.4 mg/g and 19.6 mg/g for MB and Rh.B, respectively. This approach showed modified membrane has good cationic dye rejection efficacy and can be efficiently employed to remove the dyes from aqueous streams.



中文翻译:

用胺官能化的埃洛石纳米管制备聚醚酰亚胺纳米复合膜以有效去除阳离子染料流出物

自然地,对发生的,低成本和生态友好的埃洛石纳米管进行化学修饰,并均匀地固定在聚醚酰亚胺膜基质中,以增强性能和可能的阳离子染料排斥功效。通过孔隙率,亲水性,ζ电势和渗透性检查了制备的纳米复合膜的性能。渗透实验表明水通量提高到195 L / m 2h,添加量为4 wt%。通过使用若丹明B(Rh.B)和亚甲基蓝(MB)来确定所制备膜的染料去除效率。根据pH,接触时间和初始染料浓度进行了染料排斥研究。纳米材料剂量为4 wt%的膜分别显示MB和Rh.B染料在pH值为8时的排斥率为97%,在pH值为7时的排斥率为94%。Langmuir吸附等温线是解释染料分子与膜表面相互作用的最佳模型,MB和Rh.B的染料吸附量(q max)分别为20.4 mg / g和19.6 mg / g。这种方法表明,改性膜具有良好的阳离子染料排斥效率,可以有效地用于从水性物流中去除染料。

更新日期:2018-08-23
down
wechat
bug