TY - JOUR
T1 - An efficient bio-adsorbent for the removal of dye
T2 - Adsorption studies and cold atmospheric plasma regeneration
AU - Zhou, Rusen
AU - Zhou, Renwu
AU - Zhang, Xianhui
AU - Tu, Song
AU - Yin, Yingwu
AU - Yang, Size
AU - Ye, Liyi
N1 - Publisher Copyright:
© 2016 Taiwan Institute of Chemical Engineers
PY - 2016/11/1
Y1 - 2016/11/1
N2 - Modifying agricultural biomass to make effective and economic adsorbents as well as regeneration of the exhausted ones has long been researched in wastewater treatment. The aim of this study was modifying waste tea (WT), a common agricultural by-product, with citric acid (CA) in a mild way to produce potential adsorbents for methylene blue (MB), and regenerating the spent adsorbents by cold atmospheric plasma (CAP) at normal temperature and pressure. Batch adsorption experiments were performed to investigate the effects of CA modified waste tea (CA–WT) on MB adsorption. Results revealed that CA modification effectively contributed to MB removal. MB adsorption on CA–WT was well described by the Langmuir isotherm model, and the maximum MB adsorption capacity of CA–WT was 212.77 mg/g at 298 K. After adsorption, the spent CA–WT was regenerated by cold atmospheric plasma (CAP). With the adsorption–regeneration cycle repeated six times, the CA–WT regeneration efficiency (RE) remained at a very high level. The technique presented in this study has an optimistic outlook for practical application in adsorbent modification and regeneration.
AB - Modifying agricultural biomass to make effective and economic adsorbents as well as regeneration of the exhausted ones has long been researched in wastewater treatment. The aim of this study was modifying waste tea (WT), a common agricultural by-product, with citric acid (CA) in a mild way to produce potential adsorbents for methylene blue (MB), and regenerating the spent adsorbents by cold atmospheric plasma (CAP) at normal temperature and pressure. Batch adsorption experiments were performed to investigate the effects of CA modified waste tea (CA–WT) on MB adsorption. Results revealed that CA modification effectively contributed to MB removal. MB adsorption on CA–WT was well described by the Langmuir isotherm model, and the maximum MB adsorption capacity of CA–WT was 212.77 mg/g at 298 K. After adsorption, the spent CA–WT was regenerated by cold atmospheric plasma (CAP). With the adsorption–regeneration cycle repeated six times, the CA–WT regeneration efficiency (RE) remained at a very high level. The technique presented in this study has an optimistic outlook for practical application in adsorbent modification and regeneration.
KW - Cold atmospheric plasma
KW - Critic acid modification
KW - Dye removal
KW - Regeneration
KW - Waste tea
UR - https://www.scopus.com/pages/publications/84993996045
U2 - 10.1016/j.jtice.2016.09.030
DO - 10.1016/j.jtice.2016.09.030
M3 - 文章
AN - SCOPUS:84993996045
SN - 1876-1070
VL - 68
SP - 372
EP - 378
JO - Journal of the Taiwan Institute of Chemical Engineers
JF - Journal of the Taiwan Institute of Chemical Engineers
ER -