Proceedings of the 2014 International Conference on Computer Science and Electronic Technology

Isotherm study on adsorption removal of Pb (II) by MCM-41 zeolite synthesized from biomass ash

Authors
Gang Tan, Yongjie Xue, Jun Cai
Corresponding Author
Gang Tan
Available Online January 2015.
DOI
https://doi.org/10.2991/iccset-14.2015.20How to use a DOI?
Keywords
Biomass ash; MCM-41 zeolite; Pb(II) adsorption; Isotherm; Thermodynamics
Abstract

This paper focuses on the adsorption of Pb(II) from aqueous solution on zeolite that was synthesized from biomass ash. A synthesized MCM-41 zeolite marked as MCM-41-S9 was studied as adsorbent Then, adsorption characterization of Pb(II) onto MCM-41-S9 was discussed. Test results showed that optimum conditions for Pb(II) removal were found to be pH 5 to 6, adsorbent dosage 6 g/L of solution and equilibrium time 2 h. The equilibrium adsorption isotherm can be well described by Langmuir adsorption isotherm model. The adsorption capacity of MCM-41-S9 for Pb(II) ions in terms of monolayer adsorption was 34.33 mg.g?1 at initial concentration of 300 mg.L?1 . MCM-41-S9 was adaptive and efficient to removal Pb(II) in the solutions with lower pH value. The change of entropy (?S0) and enthalpy (?H0) were estimated at 338.5 J.mol?1.K?1) and 96.2 kJ.mol?1 respectively; The negative value of Gibbs free energy (?G0) indicate feasible spontaneous and endothermic adsorption of Pb(II) on MCM-41-S9. The value of the adsorption activation energy (E), calculated using modified pseudo-second-order kinetics model, was -9.06 kJ.mol?1 and testified the reaction was spontaneous, stable and exothermic.

Copyright
© 2015, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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Volume Title
Proceedings of the 2014 International Conference on Computer Science and Electronic Technology
Series
Advances in Computer Science Research
Publication Date
January 2015
ISBN
978-94-62520-47-9
ISSN
2352-538X
DOI
https://doi.org/10.2991/iccset-14.2015.20How to use a DOI?
Copyright
© 2015, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Cite this article

TY  - CONF
AU  - Gang Tan
AU  - Yongjie Xue
AU  - Jun Cai
PY  - 2015/01
DA  - 2015/01
TI  - Isotherm study on adsorption removal of Pb (II) by MCM-41 zeolite synthesized from biomass ash
BT  - Proceedings of the 2014 International Conference on Computer Science and Electronic Technology
PB  - Atlantis Press
SP  - 91
EP  - 96
SN  - 2352-538X
UR  - https://doi.org/10.2991/iccset-14.2015.20
DO  - https://doi.org/10.2991/iccset-14.2015.20
ID  - Tan2015/01
ER  -