Abstract:
Rattan wool waste in rattan carpet industry in South Borneo is approximately 347,256 tons
per year. This high amount of waste material will be great potential to be manufactured as a
new useful product. The aim of this research was to analyze the possibility of the use of waste
material in forest product industry for cement board manufacturing with lime pozzolan
cement. The composition between the waste material weight and composition cementing
agent was determined based on SNI 03-2104-1991. The economic value of this new product
was also considered: B/C Ratio, NPV, IRR dan pay back period. This research resulted in the
best ratio of 225 gr rattan wool and lime cement for cement board production was cement
225 gr and lime 150 gr. This ratio meets the cement board manufacturing standard. Besides,
this ratio was the most economically cheap in raw material, and alternatively comparable
with other similar product in the market. B/C ratio in the discount rate 15 % = 1,082 (
feasible) , the discount rate at 25 % = 1,015 (feasible) and the discount rate at 35 % = 0,956
(unfeasible ). NPV in the discount rate 15 % = + IDR.105.101.568,00 (positive) , the
discount rate at 25 % = + IDR.3.978.560,00 (positive) and the discount rate at 35 % = -
IDR.10.414.720,00 (negative). Value IRR % = 27,764. Time capital repayment (pay back
period) only less more 2 years 7 months
