Investigating the effects of anaerobic and aerobic post-treatment on quality and stability of organic fraction of municipal solid waste as soil amendment

Y. A. Abdullahi, J. C. Akunna*, N. A. White, P. D. Hallett, R. Wheatley

*Corresponding author for this work

Research output: Contribution to journalArticle

77 Citations (Scopus)

Abstract

The use of OFMSW for biogas and compost production is considered as a sustainable strategy in saving valuable landfill space while producing valuable product for soil application. This study examines the effects of anaerobic and aerobic post-treatment of OFMSW on the stability of anaerobic digestate and compost and soil quality using seed germination tests. Anaerobic digestion of OFMSW was carried out for fifteen days after which the residual anaerobic digestate was subjected to aerobic post-treatment for seventy days. Seed germination tests showed that fresh feedstock and digestates collected during anaerobic digestion and during the early stages of aerobic post-treatment were phytotoxic. However, phytotoxic effects were not observed in soils amended with the fully stabilised anaerobic digestate compost, ADC. It was also found that seed germination increases with dilution and incubation time, suggesting that lower soil application rates and longer lag periods between soil application of ADC and planting can reduce the amount of biodegradable organics in the ADC, thus enhancing the benefits of ADC as soil amendment. (c) 2008 Elsevier Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)8631-8636
Number of pages6
JournalBioresource Technology
Volume99
Issue number18
Early online date3 Jun 2008
DOIs
Publication statusPublished - Dec 2008

Keywords

  • strategies
  • germination index
  • mill
  • compost
  • anaerobic digestate compost
  • anaerobic digestion
  • aerobic post-treatment
  • digestion
  • biogas
  • seed germination
  • germination
  • growth
  • plants

Cite this

Investigating the effects of anaerobic and aerobic post-treatment on quality and stability of organic fraction of municipal solid waste as soil amendment. / Abdullahi, Y. A.; Akunna, J. C.; White, N. A.; Hallett, P. D.; Wheatley, R.

In: Bioresource Technology, Vol. 99, No. 18, 12.2008, p. 8631-8636.

Research output: Contribution to journalArticle

@article{76222a8b9d0f46f6b1141316f4d27b6a,
title = "Investigating the effects of anaerobic and aerobic post-treatment on quality and stability of organic fraction of municipal solid waste as soil amendment",
abstract = "The use of OFMSW for biogas and compost production is considered as a sustainable strategy in saving valuable landfill space while producing valuable product for soil application. This study examines the effects of anaerobic and aerobic post-treatment of OFMSW on the stability of anaerobic digestate and compost and soil quality using seed germination tests. Anaerobic digestion of OFMSW was carried out for fifteen days after which the residual anaerobic digestate was subjected to aerobic post-treatment for seventy days. Seed germination tests showed that fresh feedstock and digestates collected during anaerobic digestion and during the early stages of aerobic post-treatment were phytotoxic. However, phytotoxic effects were not observed in soils amended with the fully stabilised anaerobic digestate compost, ADC. It was also found that seed germination increases with dilution and incubation time, suggesting that lower soil application rates and longer lag periods between soil application of ADC and planting can reduce the amount of biodegradable organics in the ADC, thus enhancing the benefits of ADC as soil amendment. (c) 2008 Elsevier Ltd. All rights reserved.",
keywords = "strategies, germination index, mill, compost, anaerobic digestate compost, anaerobic digestion, aerobic post-treatment, digestion, biogas, seed germination, germination, growth, plants",
author = "Abdullahi, {Y. A.} and Akunna, {J. C.} and White, {N. A.} and Hallett, {P. D.} and R. Wheatley",
year = "2008",
month = "12",
doi = "10.1016/j.biortech.2008.04.027",
language = "English",
volume = "99",
pages = "8631--8636",
journal = "Bioresource Technology",
issn = "0960-8524",
publisher = "Elsevier Limited",
number = "18",

}

TY - JOUR

T1 - Investigating the effects of anaerobic and aerobic post-treatment on quality and stability of organic fraction of municipal solid waste as soil amendment

AU - Abdullahi, Y. A.

AU - Akunna, J. C.

AU - White, N. A.

AU - Hallett, P. D.

AU - Wheatley, R.

PY - 2008/12

Y1 - 2008/12

N2 - The use of OFMSW for biogas and compost production is considered as a sustainable strategy in saving valuable landfill space while producing valuable product for soil application. This study examines the effects of anaerobic and aerobic post-treatment of OFMSW on the stability of anaerobic digestate and compost and soil quality using seed germination tests. Anaerobic digestion of OFMSW was carried out for fifteen days after which the residual anaerobic digestate was subjected to aerobic post-treatment for seventy days. Seed germination tests showed that fresh feedstock and digestates collected during anaerobic digestion and during the early stages of aerobic post-treatment were phytotoxic. However, phytotoxic effects were not observed in soils amended with the fully stabilised anaerobic digestate compost, ADC. It was also found that seed germination increases with dilution and incubation time, suggesting that lower soil application rates and longer lag periods between soil application of ADC and planting can reduce the amount of biodegradable organics in the ADC, thus enhancing the benefits of ADC as soil amendment. (c) 2008 Elsevier Ltd. All rights reserved.

AB - The use of OFMSW for biogas and compost production is considered as a sustainable strategy in saving valuable landfill space while producing valuable product for soil application. This study examines the effects of anaerobic and aerobic post-treatment of OFMSW on the stability of anaerobic digestate and compost and soil quality using seed germination tests. Anaerobic digestion of OFMSW was carried out for fifteen days after which the residual anaerobic digestate was subjected to aerobic post-treatment for seventy days. Seed germination tests showed that fresh feedstock and digestates collected during anaerobic digestion and during the early stages of aerobic post-treatment were phytotoxic. However, phytotoxic effects were not observed in soils amended with the fully stabilised anaerobic digestate compost, ADC. It was also found that seed germination increases with dilution and incubation time, suggesting that lower soil application rates and longer lag periods between soil application of ADC and planting can reduce the amount of biodegradable organics in the ADC, thus enhancing the benefits of ADC as soil amendment. (c) 2008 Elsevier Ltd. All rights reserved.

KW - strategies

KW - germination index

KW - mill

KW - compost

KW - anaerobic digestate compost

KW - anaerobic digestion

KW - aerobic post-treatment

KW - digestion

KW - biogas

KW - seed germination

KW - germination

KW - growth

KW - plants

U2 - 10.1016/j.biortech.2008.04.027

DO - 10.1016/j.biortech.2008.04.027

M3 - Article

VL - 99

SP - 8631

EP - 8636

JO - Bioresource Technology

JF - Bioresource Technology

SN - 0960-8524

IS - 18

ER -