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This paper, presents the results of a self financed research project, carried out by the author, to develop a method, to rapidly digest saw dust (SD) and convert it into Organic Fertilizer (OF). Since, it is well known that SD is extremely resistant to biodegradation by both aerobic and anaerobic micro organisms, the author studied the possibility of converting four types of SD, namely, Jack, Mahogany, Teak and Rubber into organic fertilizer, using a combination of Delta-D Technology and composting by aerobic micro organic activity. The research was carried out during the period August 2007 to May 2008, at No: 20, Gimpatha Road, Wattalpola, Panadura. During the first 3 months, the research carried out was on composting of pure SD with 40%, 45% and 50% moisture and composting of SD with similar moisture contents mixed with fish and vegetable market waste digested using Delta-D. From December 2007, the suitability of the organic fertilizer produced was tested by applying to mature plants and tender plants of fruit varieties; Papaya, Guava, Mango and Ambarella and vegetable varieties ladies fingers, egg plant, capsicum, slender gourd, bitter gourd and long beans. Delta-D Technology  (1,2,3,4,5) is a patented process invented by the author to rapidly digest biomass into organic fertilizer. The novelty of the technology is that, a digestive fluid, called Delta-D, is used to rapidly break down, cellulose, carbohydrates, oils, fats, proteins, resins and other components in biomass, into simple molecules that can be absorbed by plants and other organisms, as food. The results of the composting project clearly indicated that, samples of SD with only moisture did not undergo composting, while, samples with similar moisture contents, mixed with fish and vegetable market waste digested using Delta-D, underwent composting successfully within 2 months. Initial agricultural trials, commenced in December 2007 indicated that the organic fertilizer had positive impacts on the growth of all the species to which it was applied. The agricultural trials are continuing and the results will be published in the first quarter of 2009.

engineer

Delta-D Initiated Microorganic Digestion of Saw Dust into Organic Fertiliser - A Technically, Economically and Environmentally Feasible Solution to the Saw Dust Problem in Sri Lanka