Using molasses to hasten sago waste decomposition in compost production

Aziz, Azriyati Shima (2008) Using molasses to hasten sago waste decomposition in compost production. [Project Paper] (Submitted)

Text lp FSPM 2008 10.pdf Download (16MB)

Abstract

Annually about 25-30x 10 3 tone sago starch is exported. Resulted from this, there is abundant of sago waste available which is not fully utilize and manage will cause environmental pollution especially for water stream. With this new development and the ever-increasing productivity of the existing factories, the sago industry has problems in waste disposal. Recently, the government of Sarawak has spearheaded a campaign to promote this crop in the state. Yet due to its potential, these wastes are preferable to be used as a compost material. The nutrient content of sago pith and subsequently sago waste is very low, the bulk being crude fibres and some starch attached to the waste. The fibre content of sago waste is about 12%. Fungal treatment of sago waste seems possible. Microbial can grow rapidly and are able to utilized complex carbohydrates such as starch and lignocellulose. Sago waste has the nutrients necessary for microbial growth. In practice for composting an initial C/N range of 25-35 seems optimum to achieve a final C/N ratio of I 0: I. Economical sources of nitrogen could be urea or fish processing wastes, which are readily available in Sarawak. Composting of sago waste would have no need for a bulking agent. The fibres of waste would ensure an open matrix for air diffusion. By using Palm Oil Mill Effluent (POME) and Urea can accelerated the composting rate and enhance quality of compost product. Maintaining the parameters such as temperature, pH and moisture are important criteria for managing a good composting. The research methodology in this study highlights three different treatments which are 100% sago waste (treatment 1), sago waste 90% + molasses 5% + urea 5% (treatment 2) and sago waste 90% + molasses 3.3% + urea 3.3% + POME 3.3% (treatment 3). Using analysis instruments, the data collected can determine the requirement and needs in composting and quality of compost derived from sago waste. The chemical composition before and after composting sago waste shown both treatment 2 and 3 are similar trend reached the peak of temperature by first 4 days at 49°C . were significantly (P<0.05) higher than control (31.75°C). pH was within acceptable range. Total final nitrogen content was significantly higher in treatment 3 (2.46 ± 0.06 %) and treatment 2 (2.20 ± 0.10 %) than control (0.56 ± 0.33%). C:N ratio in the finished compost was below 20: I and the K level of treatment 2 (2.45 ± 0.17%) and 3 (2.84 ± 0.84%) was significantly higher than control. The period of composting process can be decreased to a short time up to 38 days.

Item Type:	Project Paper
Faculty:	Faculty of Agriculture and Food Sciences
Depositing User:	Mr. Azman Mohamad
Date Deposited:	17 Dec 2024 07:30
Last Modified:	17 Dec 2024 07:30
URI:	http://psaspb.upm.edu.my/id/eprint/2320

Actions (login required)

View Item