Open AccessRemoving of Disinfection By-Product Precursors from Surface Water by Using Magnetic Graphene Oxide
Author(s) -
Zhongmou Liu,
Xiaohong Wang,
Zhen Luo,
Mingxin Huo,
Jiequn Wu,
Hongliang Huo,
Wu Yang
Publication year - 2015
Publication title -
plos one
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.99
H-Index - 332
ISSN - 1932-6203
DOI - 10.1371/journal.pone.0143819
Subject(s) - graphene , adsorption , oxide , chemistry , precipitation , water treatment , ethanol , humic acid , nuclear chemistry , ethanol precipitation , inorganic chemistry , chemical engineering , organic chemistry , engineering , fertilizer , physics , meteorology , waste management
The magnetic graphene oxide (MGO) was successfully synthesised by the in situ chemical co-precipitation method with Fe 3+ , Fe 2+ 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.