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The influence of moisture content on the production of odor from food waste using path analysis

  • Nastaein Qamaruz-ZamanEmail author
  • Nur Sabahiah Abdul-Sukor
  • Siti Aishah Ab.-Rahman
  • Nurashikin Yaacof
Short Research and Discussion Article
  • 49 Downloads

Abstract

Path analysis has been largely used in marketing research but has recently been applied in an environmental management context. This study evaluated the potential of path analysis in identifying the influence of moisture content on odor from decomposing food waste. Food waste with varying moisture content was monitored for odor concentration, microbial population density, oxygen uptake rate, volatile fatty acids, ammonia, and hydrogen sulfide. These various parameters were later analyzed using SmartPLS 3.0 software to produce the path analysis model using simultaneous equation modeling. Results indicate that odor concentration of food waste was not directly affected by moisture content (not significant, t-statistical 1.46 < 1.96), rather; moisture content influenced the microbial population density and biodegradability of the food residue which influenced the formation of hydrogen sulfide (significant, t-statistical 3.79 > 1.96) and subsequently odor. In order to manage food waste–related odors, it is recommended that the waste be kept at a moisture content lower than 40%. This is especially critical if prolonged storage is unavoidable.

Keywords

Odor Food waste Moisture content Path analysis PLS-SEM Hydrogen sulfide 

Notes

Funding information

The study was funded by Ministry of Higher Education Malaysia Fundamental Research Grant Scheme (203/PAWAM/6071241) and Universiti Sains Malaysia under Iconic grant scheme (1001/CKT/870023) for research associated with the Solid Waste Management Cluster, Engineering Campus, Universiti Sains Malaysia.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Nastaein Qamaruz-Zaman
    • 1
    • 2
    Email author
  • Nur Sabahiah Abdul-Sukor
    • 1
  • Siti Aishah Ab.-Rahman
    • 1
  • Nurashikin Yaacof
    • 1
  1. 1.School of Civil Engineering, Engineering CampusUniversiti Sains MalaysiaPenangMalaysia
  2. 2.Solid Waste Management Cluster, Science and Engineering Research Centre, Engineering CampusUniversiti Sains MalaysiaPenangMalaysia

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