ISL OpenIR  > 青海盐湖研究所知识仓储
Dye adsorption by resins: Effect of ionic strength on hydrophobic and electrostatic interactions
Hu, Yaoqiang1,2; Guo, Tan1,2; Ye, Xiushen1; Li, Quan1; Guo, Min1; Liu, Haining1; Wu, Zhijian1
2013-07-15
Source PublicationCHEMICAL ENGINEERING JOURNAL
Volume228Pages:392-397
SubtypeArticle
AbstractDyes are adsorbed mainly through hydrophobic and electrostatic attractions and hydrogen bonding between the dyes and the adsorbents. pH and ionic strength are two important factors affecting dye adsorption. Solution pH affects the adsorption mainly through adjusting the electrostatic interactions. While the effect of ionic strength on the dye adsorption is more complicated and is not so clear. Ionic strength may affect not only the electrostatic interactions, but also the hydrophobic interactions. In this study, the effect of ionic strength on the adsorption of three dyes onto three resins were designed and investigated comparatively and comprehensively. The selected resins with a same matrix were negatively charged D001, neutral AB-8 and positively charged 717 resins. The selected dyes were methyl orange (MO), methylene blue (MB) and neutral red (NR) with negative, positive and weak positive charges, respectively. Nine groups of combinational batch adsorption experiments were carried out using the three resins and the three dyes. There are two experiments in each group. In one experiment a solution with 1 mol/L NaCl was used, while in the other experiment a solution without NaCl was used for comparison. Our experimental results confirmed the importance of hydrophobic and electrostatic interactions on the dye adsorption. The hydrophobic attraction was found to increase with increasing ionic strength. While the electrostatic interactions were found to decrease with increasing ionic strength. (C) 2013 Elsevier B.V. All rights reserved.
KeywordAdsorption Mechanism Dye Ionic Strength Electrostatic Interaction Hydrophobic Interaction
WOS HeadingsScience & Technology ; Technology
WOS KeywordMETHYL-ORANGE ADSORPTION ; CARBON-COATED MONOLITH ; AQUEOUS-SOLUTION ; ACTIVATED CARBON ; BLUE ; PH ; KINETICS ; THERMODYNAMICS ; REMOVAL ; ACID
Indexed BySCI
Language英语
WOS Research AreaEngineering
WOS SubjectEngineering, Environmental ; Engineering, Chemical
WOS IDWOS:000326203500043
Citation statistics
Cited Times:116[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.isl.ac.cn/handle/363002/4466
Collection青海盐湖研究所知识仓储
Affiliation1.Chinese Acad Sci, Key Lab Salt Lake Resources & Chem, Qinghai Inst Salt Lakes, Xining 810008, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Hu, Yaoqiang,Guo, Tan,Ye, Xiushen,et al. Dye adsorption by resins: Effect of ionic strength on hydrophobic and electrostatic interactions[J]. CHEMICAL ENGINEERING JOURNAL,2013,228:392-397.
APA Hu, Yaoqiang.,Guo, Tan.,Ye, Xiushen.,Li, Quan.,Guo, Min.,...&Wu, Zhijian.(2013).Dye adsorption by resins: Effect of ionic strength on hydrophobic and electrostatic interactions.CHEMICAL ENGINEERING JOURNAL,228,392-397.
MLA Hu, Yaoqiang,et al."Dye adsorption by resins: Effect of ionic strength on hydrophobic and electrostatic interactions".CHEMICAL ENGINEERING JOURNAL 228(2013):392-397.
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