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author:

Li, Xiao-Juan (Li, Xiao-Juan.) [1] (Scholars:李小娟) | Zheng, Ling-Yan (Zheng, Ling-Yan.) [2] | Zhu, Yun-Yan (Zhu, Yun-Yan.) [3] | Huang, Lian-Zhu (Huang, Lian-Zhu.) [4] | Lin, Zhen-Yu (Lin, Zhen-Yu.) [5] (Scholars:林振宇) | Zheng, Ou (Zheng, Ou.) [6] (Scholars:郑欧)

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EI Scopus

Abstract:

The equilibrium, kinetics and thermodynamics of the adsorption of methylene blue(MB) from aqueous solution onto copper coordination polymer with dithiooxamide (H2dtoaCu), one of the metal-organic frameworks (MOFs), were investigated in a batch adsorption system as a function of initial pH, adsorbent concentration, contact time, initial dye concentration, and temperature. The Langmuir, Freundlich, and Dubinin-Radushkevich (D-R) isotherm models were used for modeling the adsorption equilibrium. It was found that Langmuir model yielded a much better fit than the Freundlich model under different temperatures. The maximum monolayer adsorption capacities of MB were 192.98, 229.86, and 297.38 mg/g at 298, 308, and 318 K, respectively. The calculated mean adsorption energy (8.2611.04 kJ/mol) using D-R model indicated that the adsorption process might take place by chemical adsorption mechanism. Otherwise, the kinetic studies revealed that the adsorption process could be well explained by pseudo-second-order rate kinetics and intraparticle diffusion was not the rate-limiting step. Thermodynamic studies indicated that this system was feasible, spontaneous, and endothermic process. Based on these studies, H2dtoaCu can be considered as a potential adsorbent for the removal of MB from aqueous solution. © Copyright.

Keyword:

Adsorption Aromatic compounds Copper Crystalline materials Dyes Kinetics Organic polymers Thermodynamics

Community:

  • [ 1 ] [Li, Xiao-Juan]College of Environment and Resources, Fuzhou University, Fuzhou 350108, China
  • [ 2 ] [Li, Xiao-Juan]Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, Department of Chemistry, Fuzhou University, Fuzhou 350002, China
  • [ 3 ] [Zheng, Ling-Yan]Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, Department of Chemistry, Fuzhou University, Fuzhou 350002, China
  • [ 4 ] [Zhu, Yun-Yan]College of Environment and Resources, Fuzhou University, Fuzhou 350108, China
  • [ 5 ] [Huang, Lian-Zhu]Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, Department of Chemistry, Fuzhou University, Fuzhou 350002, China
  • [ 6 ] [Lin, Zhen-Yu]Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, Department of Chemistry, Fuzhou University, Fuzhou 350002, China
  • [ 7 ] [Zheng, Ou]Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, Department of Chemistry, Fuzhou University, Fuzhou 350002, China

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Source :

Journal of Donghua University (English Edition)

ISSN: 1672-5220

CN: 31-1920/TS

Year: 2014

Issue: 1

Volume: 31

Page: 10-17

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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