Microwave regeneration of field-spent granular activated carbon from power plants

Yi Fu*, Luochun Wang, Zhen Zhou

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

Granular activated carbon (GAC) is extensively used to remove natural organic matter and residential chlorine in water treatment process of power plant. After being used, the spent GAC needs to be regenerated in order to save on operation costs and reduce solid waste disposal. In this study, microwave technique was tried to regenerate the field-spent GAC from a power plant. The effect of microwave power, irradiation time and hydrochloric acid pretreatment were investigated, it was found that microwave could recover the adsorption capacity of GAC within a short time and the tannic acid adsorption efficiency of regenerated GAC was 9 times greater than spent GAC; hydrochloric acid pretreatment could improve the regeneration process, it showed the highest removal efficiency and iodine number, 99.6% and 859 mg/g respectively. The results obtained from SEM-EDX showed that hydrochloric acid pretreatment could remove inorganic matter and other impurities of GAC. All these indicate that microwave technique can effectively regenerate field-spent GAC, and hydrochloric acid pretreatment is an important process before regeneration.

Original languageEnglish
Title of host publicationProgress in Environmental Science and Engineering
Pages2065-2070
Number of pages6
DOIs
StatePublished - 2012
Externally publishedYes
Event2011 International Conference on Energy, Environment and Sustainable Development, ICEESD 2011 - Shanghai, China
Duration: 21 Oct 201123 Oct 2011

Publication series

NameAdvanced Materials Research
Volume356-360
ISSN (Print)1022-6680

Conference

Conference2011 International Conference on Energy, Environment and Sustainable Development, ICEESD 2011
Country/TerritoryChina
CityShanghai
Period21/10/1123/10/11

Keywords

  • Activated carbon
  • Microwave
  • Power plant
  • Regeneration

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