Microbial population assessment during IMO-composting production

Nurul Ain Abu Bakar, Nazlina Ibrahim, Mohd Hariz Abdul Rahman, Nur Alyani Shakri

Research output: Contribution to journalArticle

Abstract

Aims: In this study, we investigate the used of IMO produce from cooked rice in rice straw composting. The objective of this study is to identify the effect of composting using IMO and different combination of biowaste on composting of rice straw. Methodology and results: Different types of treatment were used involving rice straw and goat manure with addition or non-addition of IMO. Composting was done for 30 days in a plastic barrel and was manually turned. Temperature was measured daily while samples were analysed for moisture content, pH value and electrical conductivity (EC). Temperatures in rice straw compost contains goat manure have higher values up to 43 <sup>°</sup>C. Rice straw compost with treatment of IMO contain pro-long thermophilic phase compared to treatment without IMO. pH recorded 7.0-8.7 during the process with slight fluctuation due to the microbial activities present. EC showed higher value in rice straw compost with goat manure due to the present of soluble salt in manure. Throughout the composting time, we observed the reduction of moisture value ranging from 43% to 34%. Microbial succession in compost treated with IMO showed high population with 3.16×10<sup>9</sup> CFU/g for mesophilic microorganism during the initial phase and 7.9×10<sup>8</sup> CFU/g for thermophilic microorganism. Conclusion, significance and impact of study: Hence, it can be concluded that the IMO introduce during composting provide higher diversity of microorganisms and could pro-long the thermophilic phase, thus accelerating the process of degradation.

Original languageEnglish
Pages (from-to)47-53
Number of pages7
JournalMalaysian Journal of Microbiology
Volume11
Issue number1
Publication statusPublished - 2015

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Manure
Population
Soil
Goats
Electric Conductivity
Temperature
Oryza
Plastics
Salts

Keywords

  • Composting
  • Goat manure
  • Indigenous microorganisms (IMO)
  • Microbial succession
  • Rice straw

ASJC Scopus subject areas

  • Infectious Diseases
  • Microbiology (medical)

Cite this

Bakar, N. A. A., Ibrahim, N., Rahman, M. H. A., & Shakri, N. A. (2015). Microbial population assessment during IMO-composting production. Malaysian Journal of Microbiology, 11(1), 47-53.

Microbial population assessment during IMO-composting production. / Bakar, Nurul Ain Abu; Ibrahim, Nazlina; Rahman, Mohd Hariz Abdul; Shakri, Nur Alyani.

In: Malaysian Journal of Microbiology, Vol. 11, No. 1, 2015, p. 47-53.

Research output: Contribution to journalArticle

Bakar, NAA, Ibrahim, N, Rahman, MHA & Shakri, NA 2015, 'Microbial population assessment during IMO-composting production', Malaysian Journal of Microbiology, vol. 11, no. 1, pp. 47-53.
Bakar, Nurul Ain Abu ; Ibrahim, Nazlina ; Rahman, Mohd Hariz Abdul ; Shakri, Nur Alyani. / Microbial population assessment during IMO-composting production. In: Malaysian Journal of Microbiology. 2015 ; Vol. 11, No. 1. pp. 47-53.
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