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http://dx.doi.org/10.17137/Korrae.2012.20.1.71

Change of Solubilization Characteristics of Rice Straw by Different Pre-treatments  

Hong, Seung-Gil (National Academy of Agricultural Science, Rural Development Administration)
Shin, JoungDu (National Academy of Agricultural Science, Rural Development Administration)
Heo, Jeong-Wook (National Academy of Agricultural Science, Rural Development Administration)
Park, Woo-Kyun (National Academy of Agricultural Science, Rural Development Administration)
Kwon, Soon-Ik (National Academy of Agricultural Science, Rural Development Administration)
Park, Noh-Back (National Academy of Agricultural Science, Rural Development Administration)
Shin, Hyun-Seon (National Academy of Agricultural Science, Rural Development Administration)
Publication Information
Journal of the Korea Organic Resources Recycling Association / v.20, no.1, 2012 , pp. 71-77 More about this Journal
Abstract
In order to find a feasibility of applying an agricultural biomass to the anaerobic digestion system, the effects of pre-treatment of rice straw was investigated by different sizes,temperatures, ultrasonic frequencies, and with/without NaOH treatment on the change of soluble organic matter, which is generated most dominantly in Korea. It was observed that SCOD(soluble chemical oxygen demand) as the index for the decomposition of rice straw increased with the smaller particle size, higher reaction temperature and alkali treatment. With treatment of 5% NaOH, it was shown that the highest concentrations of SCOD were observed at 9,000 mg $L^{-1}$ and 6,000mg $L^{-1}$ at $35^{\circ}C$ and $55^{\circ}C$, respectively. Agitating with ultrasonic irradiation could be enhanced SCOD of rice straw less than 3 cm with 40 kHz of ultrasound. Optimal RPM in this study was at 150 rpm regardless of reaction temperatures.
Keywords
rice straw; SCOD(soluble chemical oxygen demand); pre-treatment; ultrasonication;
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Times Cited By KSCI : 1  (Citation Analysis)
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