Chemistry of fly ash and cyclone ash leachate from waste materials and effects of ash leachates on bacterial growth, nitrogen-transformation activity, and metal accumulation

Mio Takeuchi, Hodaka Kawahata, Lallan P. Gupta, Misao Itouga, Hitoshi Sakakibara, Hidekazu Ohta, Takeshi Komai, Yoshiro Ono

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

The effects of waste ash leachates on soil microorganism were evaluated along with a chemical characterization of ash leachates. Thirty fly ash samples and cyclone ash samples obtained from the incineration of municipal solid waste, plastic waste, and construction waste were used. Twenty-one and 22 samples inhibited N transformation activity of soil microorganism and growth of Bacillus subtilis, respectively. On the other hand, 11 and 18 samples stimulated bacterial activity and growth, respectively, at low concentrations. Generally, cyclone ash contained a smaller amount of toxic metals than fly ash. Our results suggest that cyclone ash can be further studied for reuse, perhaps as a soil amendment. Pb was found to be highly accumulated in B. subtilis cells, and should be carefully monitored when waste ash is reused in the environment.

Original languageEnglish
Pages (from-to)967-973
Number of pages7
JournalJournal of Hazardous Materials
Volume165
Issue number1-3
DOIs
Publication statusPublished - 2009 Jun 15
Externally publishedYes

Keywords

  • Bacillus subtilis
  • Metal accumulation
  • Soil microorganism
  • Toxicity
  • Waste ash

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Waste Management and Disposal
  • Pollution
  • Health, Toxicology and Mutagenesis

Fingerprint Dive into the research topics of 'Chemistry of fly ash and cyclone ash leachate from waste materials and effects of ash leachates on bacterial growth, nitrogen-transformation activity, and metal accumulation'. Together they form a unique fingerprint.

Cite this