Corncob-derived Activated Carbon for Efficient Adsorption Dye in Sewage

Zhe Sun,1,‡

Keqi Qu,1,

Yang Cheng,1

Yue You,1

Zhanhua Huang,1,*

Ahmad Umar,2,3

Yousif S. A. Ibrahim,3

Hassan Algadi,3,4

L. Castañeda,5

Henry A. Colorado6

Zhanhu Guo7

1Key Laboratory of Bio-based Material Science and Technology, Ministry of Education, Material Science and Engineering College, Northeast Forestry University, Harbin 150040, China

2Department of Chemistry, Faculty of Science and Arts, Najran University, Najran-11001, Kingdom of Saudi Arabia.

3Promising Centre for Sensors and Electronic Devices (PCSED), Najran University, Najran-11001, Kingdom of Saudi Arabia.

4Department of Electrical Engineering, Faculty of Engineering, Najran University, Najran-11001, Kingdom of Saudi Arabia.

5Sección de Estudios de Posgrado e Investigación de la Escuela Superior dEMedicina, Instituto Politécnico Nacional, Plan of San Luis and Díaz Mirón S/N, Casco de Santo Tomás, Alcaldía Miguel Hidalgo, C. P. 11340, Cd. de México, México.

6 CCComposites Lab, Universidad de Antioquia UdeA, Calle 70 No. 52-21, Medellín, Colombia

7Integrated Composites Laboratory (ICL), Department of Chemical and Bimolecular Engineering, University of Tennessee, Knoxville, TN, 37996, United States

Abstract

Water pollution is a hot issue in the world today. Therefore, the effective removal of organic pollutants in water has become an urgent problem to be solved. Herein, natural biomass wastes, corncobs as raw materials via a simple carbonization-activation method to prepare corncob-derived activated carbon (CCAC) for dye adsorption in polluted water. The effects of adsorbent dosage, dye concentration, pH and temperature on adsorption performance were also explored. Benefiting from the large specific surface area (2308.27 m2 g–1) and abundant micro-/mesoporous structure of CCAC-900-4, it has the large adsorption capacity (523.18 mg g–1) and a high removal rate of 99.52% for MB. Meanwhile, the maximum adsorption capacity of CCAC-900-4 was 864.58 mg g–1 by Langmuir isotherm fitting. More interesting, after five cycles of tests, the removal rate of methylene blue by CCAC can still reach 99.34%. This work provides a simple way for the subsequent high value-added utilization of biomass waste resources.

Corncob-derived Activated Carbon for Efficient Adsorption Dye in Sewage