Facile Preparation of Porous Carbon Derived from Pomelo Peel for Efficient Adsorption of Methylene Blue

Wenlin Zhang; Mingwan Liu; Yuhong Zhao; Qinhong Liao

doi:10.3390/molecules27103096

Facile Preparation of Porous Carbon Derived from Pomelo Peel for Efficient Adsorption of Methylene Blue

Molecules. 2022 May 11;27(10):3096. doi: 10.3390/molecules27103096.

Authors

Wenlin Zhang^{1

2}, Mingwan Liu¹, Yuhong Zhao³, Qinhong Liao¹

Affiliations

¹ Chongqing Key Laboratory of Economic Plant Biotechnology, College of Landscape Architecture and Life Science (Institute of Special Plants), Chongqing University of Arts and Sciences, Yongchuan, Chongqing 402160, China.
² College of Food Science, Southwest University, Beibei, Chongqing 400716, China.
³ College of Biology and Food Engineering, Chongqing Three Gorges University, Wanzhou, Chongqing 404199, China.

Abstract

Pomelo peel waste-derived porous carbon (PPPC) was prepared by a facile one-step ZnCl₂ activation method. The preparation parameters of PPPC were the mass ratio of ZnCl₂ to pomelo peel of 2:1, carbonization temperature of 500 °C, and carbonization time of 1 h. This obtained PPPC possessed abundant macro-,meso-, and micro-porous structures, and a large specific surface area of 939.4 m² g^-1. Surprisingly, it had excellent adsorption ability for methylene blue, including a high adsorption capacity of 602.4 mg g^-1 and good reusability. The adsorption isotherm and kinetic fitted with Langmuir and pseudo-second order kinetic models. This work provides a novel strategy for pomelo peel waste utilization and a potential adsorbent for treating dye wastewater.

Keywords: adsorbent; methylene blue; pomelo peel; porous carbon.

MeSH terms

Adsorption
Carbon* / chemistry
Hydrogen-Ion Concentration
Methylene Blue* / chemistry
Porosity

Substances

Carbon
Methylene Blue

Grants and funding

This study was supported by Natural Science Foundation Project of Chongqing (cstc2019jcyj-msxmX0819) and Innovation and Entrepreneurship Training program for College Students (S202110642017).