[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.7745/KJSSF.2014.47.5.356

Effects of Coal Fly Ash as a Bulking Agent under Co-composting with Swine Manure and Saw Dust

Lee, Chang Hoon (Soil and Fertilizer Division, NAAS, RDA)
Park, Seong Jin (Soil and Fertilizer Division, NAAS, RDA)
Kim, Myung Sook (Soil and Fertilizer Division, NAAS, RDA)
Yun, Sun Kang (Soil and Fertilizer Division, NAAS, RDA)
Sonn, Yeon Kyu (Soil and Fertilizer Division, NAAS, RDA)

Publication Information

Korean Journal of Soil Science and Fertilizer / v.47, no.5, 2014 , pp. 356-361 More about this Journal

Abstract

The coal fly ash (CFA) may be utilized as an extender for organic waste composting at the same time fully expected to solve all industrial waste disposal and sawdust tribe. The main objective in this study was to evaluate the effect of CFA addition as a bulking agent for swine manure composting. To determine the suitable addition rate of CFA as a bulking agent, 0, 10, 20 and 30% of saw dust were mixed with 30, 20, 10 and 0% of coal fly ash, respectively. Compost quality for swine manure composting was to evaluate temperature, pH, C/N ratio, and phytotoxicity as germination index. Stability of compost increased with increasing levels of CFA as bulking agent during swine manure composting due to the high alkaline materials including CFA. C to N ratio in treatment added CFA was higher than that of the control without CFA. After finishing composting, germination index of lettuce and cabbage in swine manure compost added 10% of CFA was similar to the control, all the heavy metal contents were far below the stipulated standard for organic farming. These results indicated tahr coal fly ash as bulking agents might be alternative materials to save saw dust and apply industrial products for swine manure composting.

Keywords

Coal fly ash; Bulking agent; Composting; Phytotoxicity; Swine manure;

Citations & Related Records

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