Removing of Disinfection By-Product Precursors from Surface Water by Using Magnetic Graphene Oxide

The magnetic graphene oxide (MGO) was successfully synthesised by the in situ chemical co-precipitation method with Fe3+, Fe2+ and graphene oxide (GO) in laboratory and, was used as an adsorbent for disinfection by-product (DBP) precursors removing from four natural surface water samples. The result...

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Bibliographic Details
Published in:PloS one 2015-12, Vol.10 (12), p.e0143819
Main Authors: Liu, Zhongmou, Wang, Xianze, Luo, Zhen, Huo, Mingxin, Wu, Jinghui, Huo, Hongliang, Yang, Wu
Format: Article
Language:English
Subjects:
Adsorbents
Adsorption
Ammonia
Analysis
Aqueous solutions
Aromatic compounds
Byproducts
Chemical precipitation
Chemical synthesis
Disinfectants
Disinfection
Disinfection & disinfectants
Drinking water
Engineering research
Environmental protection
Ethanol
Fourier transforms
Graphene
Graphite
Graphite - chemistry
Humic acids
Humic Substances
Hydrogen-Ion Concentration
Hydrophobicity
Iron
Iron Compounds - chemistry
Magnetic Phenomena
Microscopy
Nitrogen Compounds
Oxides - chemistry
PCB
pH effects
Polychlorinated biphenyls
Precipitation (Meteorology)
Precursors
Proteins
Studies
Surface water
Water analysis
Water Pollutants, Chemical
Water Purification - methods
Water quality
Water resources
Water sampling
Water treatment
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Summary:The magnetic graphene oxide (MGO) was successfully synthesised by the in situ chemical co-precipitation method with Fe3+, Fe2+ and graphene oxide (GO) in laboratory and, was used as an adsorbent for disinfection by-product (DBP) precursors removing from four natural surface water samples. The results indicate that various DBPs formation significantly decreased by 7-19% to 78-98% for the four samples after MGO treatment and, the treatment process was rapidly reached equilibrium within 20 minutes. The DBP precursors removal efficiency decreased with the increasing pH value from 4 to 10. Hydrophobic compounds (humic acid and fulvic acid) are more sensitive to MGO, whereas hydrophilic and nitrogenous compounds (aromatic proteins) are more insensitive. MGO could be regenerated by using 20% (v/v) ethanol and, the DBP precursors removal efficiency can stay stable after five cycles. These results indicate that MGO can be utilized as a promising adsorbent for the removal of DBP precursors from natural surface water.
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0143819