International Journal of Environmental Science and Development

Abstract—Waste mining has been implemented in Gresik City since 2013. The aged waste is processed into refuse-derived fuel (RDF) for Cement Industry. The study objects to calculate the benefit of waste mining activity using emergy analysis. Mass balance analysis assesses total waste flow for separation, composting, and RDF production. Waste separation done by 72 scavengers in landfill contributes 1.54% waste reduction (1.3 ton waste) and 228.5 US$/day income by selling them to middle man. Meanwhile, 265.6 ton aged waste excavated from landfill is screened, shredded and processed into 72.68 ton/day RDF type 2. By-product of this process is 184.32 ton/day residue (soil-like substances) used for land reclamation. RDF produced from landfill can substitute coal consumption in cement industry for 4.25 years. Emergy calculation comes to the result that waste treatment in landfill through scavenging, composting and waste mining contributes gross emergy benefit of 2.14E+22 seJ/yr.

Index Terms—Landfill, refuse derived fuel, mass balance analysis, Emergy analysis.

Christia Meidiana is with the Department of Urban and Regional Planning of Faculty of Engineering, Brawijaya University, Mlg 65147 Indonesia (e-mail: c_meideiana@ub.ac.id).
Dwi Mashita was with Department of Urban and Regional Planning of Faculty of Engineering, Brawijaya University, Mlg 65147 Indonesia (e-mail: dwimashita23@gmail.com).

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Cite: Christia Meidiana and Dwi Mashita, "A Mass Balance Method for Assessing Emergy Benefit of Waste Mining for Refuse Derived Fuel Production," International Journal of Environmental Science and Development vol. 8, no. 6, pp. 448-453, 2017.