Absorption Behavior of Graphene Nanoplates toward Oils and Organic Solvents in Contaminated Water

Duong Duc La, Tuan Anh Nguyen, Thanh Tung Nguyen, Ha Duc Ninh, Hoai Phuong Nguyen Thi, Tham Thi Nguyen, Duy Anh Nguyen, Trung Dung Dang, Eldon R. Rene, Soon Woong Chang, Hien Tran Thi and Dinh Duc Nguyen
Additional contact information
Duong Duc La: Institute of Chemistry and Materials, Hanoi 100000, Vietnam
Tuan Anh Nguyen: Applied Nanomaterial Laboratory, ANTECH, Hanoi 100000, Vietnam
Thanh Tung Nguyen: Institute of Material Science, Vietnam Academy of Science and Technology, Hanoi 100000, Vietnam
Ha Duc Ninh: Institute of Chemistry and Materials, Hanoi 100000, Vietnam
Hoai Phuong Nguyen Thi: Institute of Chemistry and Materials, Hanoi 100000, Vietnam
Tham Thi Nguyen: Applied Nanomaterial Laboratory, ANTECH, Hanoi 100000, Vietnam
Duy Anh Nguyen: Institute of Chemistry and Materials, Hanoi 100000, Vietnam
Trung Dung Dang: School of Chemical Engineering, Hanoi University of Science and Technology, Hanoi 100000, Vietnam
Eldon R. Rene: Department of Environmental Engineering and Water Technology, IHE Delft Institute for Water Education, Westvest 7, 2611 AX Delft, The Netherlands
Soon Woong Chang: Department of Environmental Energy Engineering, Kyonggi University, Suwon 437-826, Korea
Hien Tran Thi: Institute for Environmental Science, Engineering and Management, Industrial University of Ho Chi Minh City, 12 Nguyen Van Bao, Go Vap District, Ho Chi Minh City 700000, Vietnam
Dinh Duc Nguyen: Department of Environmental Energy Engineering, Kyonggi University, Suwon 437-826, Korea

Sustainability, 2019, vol. 11, issue 24, 1-9

Abstract: In this work, graphene nanoplates (GNPs) were successfully prepared via direct chemical exfoliation from natural graphite. The properties of prepared GNPs were investigated using scanning electron microscopy and X-ray diffraction. The resultant GNPs had a low bulk density of 0.015 g mL −1 , C content of 99.6%, a lateral diameter of 5–15 µm, and thickness of <15 nm, respectively. The absorption capacity of the GNPs for a range of oils and organic solvents including pump oil, polydimethylsiloxane oil (PDMS), dioctyl phthalates (DOP) oil, olive oil, bean oil, mazut oil, xylene, ethanol, and ethylene glycol (EG) was evaluated. The effects of the sorption conditions such as the absorption time (sorption kinetics), temperature, and aging manner (static, stirring, and ultrasonic) on the absorption capability of the GNPs were also investigated. It could be seen that the GNPs revealed extremely high absorption capacities for oil and organic solvents, reaching 21–42 times their own weight only after 2 min of absorption at room temperature, which were found to be much higher than those shown by various commercially available absorbents.

Keywords: absorbent; graphene; oil absorption; organic solvent absorption; water treatment (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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