Preparation of eupatorium adenophorum based porous carbon with microwave heating using response surface methodology

Zhao Qiang Zheng, Hong Ying Xia, C. Srinivasakannan, Jin Hui Peng, Li Bo Zhang

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


Eupatorium adenophorum was utilized as raw materials for the preparation of activated carbon via microwave assisted steam activation. Influences of the three vital process parameters - activation temperature, activation duration and steam flow rate - have been assessed on the adsorption capacity and yield of Eupatorium adenophorum activated carbon (EAAC). The process parameters were optimized utilizing the Design Expert software and were identified to be an activation duration of 45 min, an activation temperature of 950 °C and a steam flow rate of 0.7 ml/min, with the resultant iodine number and yield being 1,010 mg/g and 20.13% respectively. The validity of process model to optimize the process parameters was verified using the analysis of variance (ANOVA). The key parameters that characterize quality of the porous carbon such as the BET surface area, total pore volume and average pore diameter were estimated to be 1,142 m2/g, 0.84 ml/g and 3.3 nm respectively, for the sample corresponding to the optimized process conditions. Additionally the pore structure is characterized using Scanning Electron Microscope (SEM). The present work strongly supports utilization of Eupatorium adenophorum as a potential precursor through microwave heating.

Original languageBritish English
Pages (from-to)427-437
Number of pages11
JournalHigh Temperature Materials and Processes
Issue number5
StatePublished - 1 Sep 2014


  • activated carbon
  • Eupatorium adenophorum
  • microwave heating
  • response surface methodology


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