Feasibility study of waste utilization facilities in cement factory for spent bleaching earth

Abstract

In this paper, the problem to be solved is a feasibility study for waste utilization facilities development, especially for spent bleaching by considering the market, technical, and economic aspects. The amount of spent bleaching produced by the palm oil industry in Indonesia reaches 750000 tons/year. Government regulation number 101 2014 categorized spent bleaching earth as hazardous waste with a code B 413. Therefore, the companies must carry out environmental protection and management for spent bleaching earth. This facility built to capture the market of spent bleaching earth waste disposal service, raw material substitution, and alternative fuel (coal). From the market perspective, the facility will capture about 7% market shares. Based on the technical aspect, the calcination process, kiln operational, and quality of clinker won’t be disrupted if the capacity of waste facilities is 7-8 tons per hour. Based on the Payback Period calculation, it needs 5.4 years to return the investment. From the Net Present Value and Internal Rate of Return, it can be concluded that the development of waste utilization facility for spent bleaching is feasible. Based on sensitivity analysis the facilities must run above 60% capacity to make sure the facilities still feasible. Further research is expected to analyze the potential for other B3 waste which can managed by the facility and potential to enter end to end waste management business so it can have a greater impact to the company and society.