Performance evaluation of composter bins for food waste at the Universiti Kebangsaan Malaysia

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Abstract

Food waste generated from cafeterias in Universiti Kebangsaan Malaysia (UKM) was evaluated using composter bin system. The aim of the study was to determine if all of the cafeteria food waste in UKM could be composted using this system. The mixes of food waste and saw dust was evaluated in composition ratio of 0.5 kg of sawdust to 10 kg of food waste. Three composter bins were used, namely Bin 1, Bin 2 and Bin 3. Bin 1 consisted of uncooked waste, Bin 2 of uncooked waste and effective microorganism and Bin 3 of cooked waste and effective microorganism. Temperature, moisture content, pH value, Carbon to Nitrogen (C:N) ratio, Phosphorus (P) and Potassium (K) were monitored during the composting process. The moisture content dropped from the initial range of 87.38% to 51.15% with a final temperature varies between 32.3°C and 34.5°C. After 12 weeks, the C:N ratio dropped from 14 to 12 for Bin 1, 14 to 9 for Bin 2 and 8 to 6 for Bin 3 with the pH values ranging from 7-8. The concentrations of nutrients were within the standard limit.

Original languageEnglish
Pages (from-to)1107-1113
Number of pages7
JournalAustralian Journal of Basic and Applied Sciences
Volume5
Issue number7
Publication statusPublished - Jul 2011

Fingerprint

food waste
Malaysia
beneficial microorganisms
sawdust
cafeterias
water content
carbon
nitrogen
composting
temperature
nutrient content
potassium
phosphorus

Keywords

  • Composter bin
  • Composting
  • Effective microorganism
  • Food waste

ASJC Scopus subject areas

  • General

Cite this

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title = "Performance evaluation of composter bins for food waste at the Universiti Kebangsaan Malaysia",
abstract = "Food waste generated from cafeterias in Universiti Kebangsaan Malaysia (UKM) was evaluated using composter bin system. The aim of the study was to determine if all of the cafeteria food waste in UKM could be composted using this system. The mixes of food waste and saw dust was evaluated in composition ratio of 0.5 kg of sawdust to 10 kg of food waste. Three composter bins were used, namely Bin 1, Bin 2 and Bin 3. Bin 1 consisted of uncooked waste, Bin 2 of uncooked waste and effective microorganism and Bin 3 of cooked waste and effective microorganism. Temperature, moisture content, pH value, Carbon to Nitrogen (C:N) ratio, Phosphorus (P) and Potassium (K) were monitored during the composting process. The moisture content dropped from the initial range of 87.38{\%} to 51.15{\%} with a final temperature varies between 32.3°C and 34.5°C. After 12 weeks, the C:N ratio dropped from 14 to 12 for Bin 1, 14 to 9 for Bin 2 and 8 to 6 for Bin 3 with the pH values ranging from 7-8. The concentrations of nutrients were within the standard limit.",
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