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Influence of oxygen flow rate and compost addition on reduction of organic matter in aerated waste layer containing mainly incineration residue

Asakura, Hiroshi ; Nakagawa, Kei LU orcid ; Endo, Kazuto ; Yamada, Masato ; Ono, Yusaku and Ono, Yoshiro (2013) In Journal of Environmental Sciences (China) 25(1). p.53-58
Abstract

Landfilling municipal solid waste incineration (MSWI) residue alkalizes the waste layer, causing a subsequent decrease in microbial activity and a delay in the decomposition of organic matter. In this study, efficiencies of neutralization of the leachate and organic matter decomposition in the waste layer in a column filled with MSWI residue using aeration and compost addition were evaluated. Total organic carbon (TOC) reduction in the waste layer is large at high oxygen flow rate (OFR). To effectively accelerate TOC reduction in the waste layer to which compost was added, a high OFR exceeding that by natural ventilation was required. At day 65, the pH of the leachate when OFR was above 102... (More)

Landfilling municipal solid waste incineration (MSWI) residue alkalizes the waste layer, causing a subsequent decrease in microbial activity and a delay in the decomposition of organic matter. In this study, efficiencies of neutralization of the leachate and organic matter decomposition in the waste layer in a column filled with MSWI residue using aeration and compost addition were evaluated. Total organic carbon (TOC) reduction in the waste layer is large at high oxygen flow rate (OFR). To effectively accelerate TOC reduction in the waste layer to which compost was added, a high OFR exceeding that by natural ventilation was required. At day 65, the pH of the leachate when OFR was above 102 mol-O2/(day·m3) was lower than that when OFR was below 101 mol-O2/(day·m3). At the same OFR, the pH of waste sample was lower than that of waste sample with compost. Although leachate neutralization could be affected by compost addition, TOC reduction in the waste layer became rather small. It is possible that humic substances in compost prevent the decomposition of TOC in MSWI residue.

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author
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publishing date
type
Contribution to journal
publication status
published
subject
keywords
Acceleration of stabilization, Aeration, Landfill, Neutralization, Waste
in
Journal of Environmental Sciences (China)
volume
25
issue
1
pages
6 pages
publisher
Science China Press
external identifiers
  • pmid:23586299
  • scopus:84872411928
ISSN
1001-0742
DOI
10.1016/S1001-0742(12)60022-9
language
English
LU publication?
no
id
609a7b8c-0d39-4358-b108-eb16aff11100
date added to LUP
2019-01-02 01:31:07
date last changed
2024-01-15 10:44:09
@article{609a7b8c-0d39-4358-b108-eb16aff11100,
  abstract     = {{<p>Landfilling municipal solid waste incineration (MSWI) residue alkalizes the waste layer, causing a subsequent decrease in microbial activity and a delay in the decomposition of organic matter. In this study, efficiencies of neutralization of the leachate and organic matter decomposition in the waste layer in a column filled with MSWI residue using aeration and compost addition were evaluated. Total organic carbon (TOC) reduction in the waste layer is large at high oxygen flow rate (OFR). To effectively accelerate TOC reduction in the waste layer to which compost was added, a high OFR exceeding that by natural ventilation was required. At day 65, the pH of the leachate when OFR was above 10<sup>2</sup> mol-O<sub>2</sub>/(day·m<sup>3</sup>) was lower than that when OFR was below 10<sup>1</sup> mol-O<sub>2</sub>/(day·m<sup>3</sup>). At the same OFR, the pH of waste sample was lower than that of waste sample with compost. Although leachate neutralization could be affected by compost addition, TOC reduction in the waste layer became rather small. It is possible that humic substances in compost prevent the decomposition of TOC in MSWI residue.</p>}},
  author       = {{Asakura, Hiroshi and Nakagawa, Kei and Endo, Kazuto and Yamada, Masato and Ono, Yusaku and Ono, Yoshiro}},
  issn         = {{1001-0742}},
  keywords     = {{Acceleration of stabilization; Aeration; Landfill; Neutralization; Waste}},
  language     = {{eng}},
  month        = {{01}},
  number       = {{1}},
  pages        = {{53--58}},
  publisher    = {{Science China Press}},
  series       = {{Journal of Environmental Sciences (China)}},
  title        = {{Influence of oxygen flow rate and compost addition on reduction of organic matter in aerated waste layer containing mainly incineration residue}},
  url          = {{http://dx.doi.org/10.1016/S1001-0742(12)60022-9}},
  doi          = {{10.1016/S1001-0742(12)60022-9}},
  volume       = {{25}},
  year         = {{2013}},
}