EFFECT OF THE CARBONIZATION AND ACTIVATION PROCESS ON THE ADSORPTION CAPACITY OF RICE HUSK ACTIVATED CARBON

Authors

  • Hoa Thai Ma Travinh University, 126 Nguyenthienthanh street, Ward 5,Travinh city, Vietnam
  • Hung Cam Ly Hochiminh City University of Natural Resources and Environment
  • Van Thi Thanh Ho Hochiminh City University of Natural Resources and Environment
  • Nguyen Bao Pham Travinh University, 126 Nguyenthienthanh street, Ward 5,Travinh city, Vietnam
  • Dat Chi Nguyen Travinh University, 126 Nguyenthienthanh street, Ward 5,Travinh city, Vietnam
  • Kieu Thi Diem Vo Dongnai Technology University, Nguyenkhuyen street, Ward Trangdai, Bienhoa city,Vietnam
  • Phan Dinh Tuan Hochiminh City University of Natural Resources and Environment

DOI:

https://doi.org/10.15625/2525-2518/55/4/9124

Keywords:

rice husk, carbonization, activation, activated carbon

Abstract

In this study, rice husk was used as a precursor to prepare activated carbon using steam as a physical activation agent. Steam for activation can be used to activate almost all raw materials. A variety of methods have been developed but all of these share the same basic principle of initial carbonization followed by an activation step with steam. The study also investigates the effects of preparation parameters on the surface characteristics of the carbon. These parameters include the range of temperature and time in the carbonization and activation. The initial carbonization, done at temperatures up to 500°C in 60 min, is a highly exothermic process where the temperature is strictly controlled. The creation of the internal surface is done during the activation step with steam at temperatures 800°C in 30 min., for which the BET surface area is up to 710.8m2/g. Besides, the iodine and methylene blue adsorption capacity of rice-husk carbon are the best that reach 865.98±6.5 and 217.86±1.0 (mg/g), respectively. The entire synthetic procedure was simple, environmental-friendly and economical-effectively. The application prospect of the activated carbon prepared in this work was much more promising due to its high adsorptive capacity.

Downloads

Download data is not yet available.

Author Biographies

Hung Cam Ly, Hochiminh City University of Natural Resources and Environment

Research Institute of Sustainable Development

Van Thi Thanh Ho, Hochiminh City University of Natural Resources and Environment

Dept. R&D and External Relations

Phan Dinh Tuan, Hochiminh City University of Natural Resources and Environment

Research Institute of Sustainable Development

Downloads

Published

2017-08-11

Issue

Section

Materials