Microbial population assessment during IMO-composting production
- Author:
Nurul Ain A. B
;
Nazlina I
;
Mohd. Hariz A. R
;
Nur Alyani S
- Publication Type:Journal Article
- Keywords:
indigenous microorganisms (IMO);
composting;
rice straw;
goat manure;
microbial succession
- MeSH:
Colony Count, Microbial
- From:Malaysian Journal of Microbiology
2015;11(1):47-53
- CountryMalaysia
- Language:English
-
Abstract:
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 °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 3.16×109 CFU/g for mesophilic microorganism during the initial phase and 7.9×108 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.
