Bioremediation of soil contaminated with native polycyclic aromatic hydrocarbons from unburnt coal using an in-vessel composting method

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Abstract

The present study was undertaken to investigate the removal of 16 polycyclic aromatic hydrocarbons (PAHs) listed as priority pollutants by the US Environmental Protection Agency (USEPA-PAHs) that are found in coal-contaminated soil during simulated in-vessel composting. Contaminated soil (S) was mixed with green waste (W) in the ratios of 3:1, 1:1, and 1:3 under neutral and acidic soil conditions in laboratory-scale composting reactors. The highest removal efficiency of total 16 USEPA-PAHs (71.88%) was observed in S:W ratio of 1:1 and neutral soil treatment with the removal rate constant of 0.0106 day-1. Results found that the S:W ratio significantly influenced the removal of PAHs during composting but not the initial soil pH. The results of this research suggest that composting is a feasible and appropriate technology to remediate soil contaminated by coal-native PAH.

Original languageEnglish
Pages (from-to)98-107
Number of pages10
JournalBioremediation Journal
Volume20
Issue number2
DOIs
Publication statusPublished - 2 Apr 2016

Keywords

  • Coal port
  • South Kalimantan
  • green waste
  • petrogenic
  • removal

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