期刊
APPLIED SURFACE SCIENCE
卷 326, 期 -, 页码 187-194出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2014.11.141
关键词
Cyclic adsorption; Granular activated carbon; Graphene oxide; Sodium Y-type zeolite; Tetramethylammonium hydroxide
类别
资金
- Ministry of Science and Technology (MOST), Taiwan [MOST 103-2221-E-005-004-MY3]
Graphene oxide (GO), sodium Y-type zeolite (NaY) and granular activated carbon (GAC) are selected as adsorbents to study their kinetics, thermodynamics and regeneration of tetramethylammonium hydroxide (TMAH) adsorption from water. The adsorption kinetics follows the pseudo-second-order rate law while the adsorption thermodynamics shows an exothermic reaction with GO and GAC but displays an endothermic reaction with NaY. The adsorbed TMAH can be readily desorbed from the surface of GO and NaY by 0.05 M NaCl solution. A comparative study on the cyclic TMAH adsorption with GO, NaY and GAC is also conducted and the results reveal that GO exhibits the greatest TMAH adsorption capacity as well as superior reversibility of TMAH adsorption over 10 cycles of adsorption and desorption process. These features indicate that GO is a promising and efficient adsorbent for TMAH removal in wastewater treatment. (C) 2014 Elsevier B.V. All rights reserved.
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