Supercritical water oxidation of fulvic acid as a model organic compound in landfill leachate

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Abstract

Fulvic acid (FA) is a common refractory organic compound in landfill leachate. The degradation of FA in supercritical water oxidation (SCWO) was conducted in a SS 316 batch reactor. The effects of temperature, pressure, residence time, oxidation ratio and initial FA concentration on the degradation of FA were investigated. Results showed that FA could be easily destructed in SCWO process, and a total organic carbon (TOC) removal efficiency of 98.0% was available at 600 °C, 420 s, 25 MPa and 1% FA. Oxidation coefficient had a significant positive effect on the degradation of FA. Total carbon (TC) and TOC removal efficiencies increased from 78.9% to 97.2% and from 86.4% to 97.2, respectively, when oxidation coefficient increased from 0 to 4. Benzene, phenol and naphthalene could be regarded as the intermediate products in SCWO.

Original languageEnglish
Title of host publicationEnvironmental Protection and Sustainable Development
Pages600-604
Number of pages5
DOIs
StatePublished - 2014
Event2013 2nd International Conference on Sustainable Energy and Environmental Engineering, ICSEEE 2013 - Shenzhen, China
Duration: 28 Dec 201329 Dec 2013

Publication series

NameApplied Mechanics and Materials
Volume522-524
ISSN (Print)1660-9336
ISSN (Electronic)1662-7482

Conference

Conference2013 2nd International Conference on Sustainable Energy and Environmental Engineering, ICSEEE 2013
Country/TerritoryChina
CityShenzhen
Period28/12/1329/12/13

Keywords

  • Fulvic acid
  • Landfill leachate
  • Supercritical water oxidation

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