Preparation of graphene oxide-montmorillonite nanocomposite and its application in multiple-pollutants removal from aqueous solutions

It is of interest to develop a novel fabrication method of a mineral adsorbent for wastewater treatment to remove the combination of heavy metal ions and refractory organic contaminants. The crosslinking agent stearyl trimethyl ammonium chloride was added into a suspension of montmorillonite and gra...

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Veröffentlicht in:Water science and technology : a journal of the International Association on Water Pollution Research. - 1986. - 79(2019), 2 vom: 13. Jan., Seite 323-333
1. Verfasser: Zhang, Chengyu (VerfasserIn)
Weitere Verfasser: Luan, Jingde, Chen, Wei, Ke, Xin, Zhang, Haijun
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2019
Zugriff auf das übergeordnete Werk:Water science and technology : a journal of the International Association on Water Pollution Research
Schlagworte:Journal Article Environmental Pollutants Oxides Water Pollutants, Chemical Bentonite 1302-78-9 Graphite 7782-42-5
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520 |a It is of interest to develop a novel fabrication method of a mineral adsorbent for wastewater treatment to remove the combination of heavy metal ions and refractory organic contaminants. The crosslinking agent stearyl trimethyl ammonium chloride was added into a suspension of montmorillonite and graphene oxide to implement their recombination to fabricated graphene oxide-montmorillonite nanocomposite (GMN). The fabricated nanocomposite was characterized by X-ray diffraction, scanning electron microscopy, Fourier transform infrared spectroscopy, Brunauer-Emmett-Teller analysis and zeta potential. Results indicated that GMN exhibited a honeycomb texture, providing the chemical reaction site for the simultaneous adsorption of Pb2+ and p-nitrophenol (PNP). Factors including pH value, contact time, contact temperature and GMN dosage in the adsorption process were crucial for both Pb2+ adsorption and PNP adsorption. The optimum adsorption capacities of Pb2+ and PNP onto GMN were 19.39 mg·g-1 and 14.90 mg·g-1 under the condition of pH = 6, contact temperature 55 °C, contact time 60 min and GMN dosage 0.10 g, respectively. Data from experimental studies on simultaneous adsorption was well described by the pseudo-second-order model. The implementation of this work shows that GMN is a promising material for application in the simultaneous removal of heavy metal ions and refractory organic contaminants 
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700 1 |a Luan, Jingde  |e verfasserin  |4 aut 
700 1 |a Chen, Wei  |e verfasserin  |4 aut 
700 1 |a Ke, Xin  |e verfasserin  |4 aut 
700 1 |a Zhang, Haijun  |e verfasserin  |4 aut 
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