Adsorption Of Methylene Blue from Aqueous Solution with Sulfuric Acid Activated Corn Cobs: Equilibrium, Kinetics, and Thermodynamics Assessment

Pinar BOZBEYOGLU; Celal DURAN; Cemalettin BALTACİ; Ali GUNDOGDU

doi:https://doi.org/10.17350/HJSE19030000193

Article Details

Adsorption Of Methylene Blue from Aqueous Solution with Sulfuric Acid Activated Corn Cobs: Equilibrium, Kinetics, and Thermodynamics Assessment

Authors:

Pinar BOZBEYOGLU | Celal DURAN | Cemalettin BALTACİ | Ali GUNDOGDU

Publisher:

Hitit University

Journal:

Hittite Journal of Science and Engineering 2020 Vol.7 Issue 3, pp.239-256

Document Type:

Article

Publication Date:

9/2020

Document Language:

English

Document ID (Org No.):

2000451415

Frequency:

Quarterly

eISSN:

2148-4171

DOI:

https://doi.org/10.17350/HJSE19030000193

Abstract:

 

Three adsorbents with different characteristics were produced in this study by activation  of sulfuric acid with different concentrations, from corn  Zea mays L.  cobs, which is  an agricultural waste by-product resulting from harvesting. After characterization by the  parameters such as Boehm titration, determination of pH-pHpzc, and methylene blue –  iodine number, and IR analysis, their methylene blue adsorption potentials from aqueous  medium were investigated based on equilibrium, kinetics, and thermodynamics evaluations. This study aims to examine the effects of relatively dilute and concentrated acids  on the activation process and to gain an economic value to waste materials through the  production of a new adsorbent. It was observed that the initial solution pH did not have a  significant effect on the adsorption efficiency. The adsorption process reached the equilibrium at the end of the first 120 minutes, and the kinetic data fit the pseudo-second-order  kinetic model. Langmuir adsorption capacity  295.5 mg/g  of the adsorbent produced by  activating with 50% sulfuric acid was found higher than those produced with 75% and  98% acids. An increase in ambient temperature effected the adsorption positively. As a  result, in this study, very low-cost adsorbents were produced from the waste by-product  corn cobs, and a new approach was proposed for cleaning wastewater containing dyestuffs.

Article Details

Adsorption Of Methylene Blue from Aqueous Solution with Sulfuric Acid Activated Corn Cobs: Equilibrium, Kinetics, and Thermodynamics Assessment

Authors: Pinar BOZBEYOGLU | Celal DURAN | Cemalettin BALTACİ | Ali GUNDOGDU

Publisher: Hitit University

Journal: Hittite Journal of Science and Engineering 2020 Vol.7 Issue 3, pp.239-256

Document Type: Article

Publication Date: 9/2020

Document Language: English

Document ID (Org No.): 2000451415

Frequency: Quarterly

eISSN: 2148-4171

DOI: https://doi.org/10.17350/HJSE19030000193

Issues

Authors:

Pinar BOZBEYOGLU | Celal DURAN | Cemalettin BALTACİ | Ali GUNDOGDU

Publisher:

Hitit University

Journal:

Hittite Journal of Science and Engineering 2020 Vol.7 Issue 3, pp.239-256

Document Type:

Article

Publication Date:

9/2020

Document Language:

English

Document ID (Org No.):

2000451415

Frequency:

Quarterly

eISSN:

2148-4171

DOI:

https://doi.org/10.17350/HJSE19030000193