Plastic Waste Recycle into Pellet: Economic Analysis and Processing Temperature Effects

Abstract:

Waste from plastic products can be considered complex materials, making recycling a challenge. PET and LDPE are common type of plastic that is easily found in garbage pile. This research was conducted to study the potential of plastic waste conversion into solid fuel to reduce the accumulation of this waste in the environment. The conversion method is to use an extruder. An economic analysis was performed to measure the feasibility of this recycling method. PET and LDPE plastic waste were recycled into pellets using simple heated-extruder equipment after being shredded into small flakes. The extruder temperature was varied at 120^OC, 130^OC, 140^OC, 150^OC, 160^OC, and 180^OC. The optimum temperature for LDPE pellets is 120^OC, and PET pellets is 130^OC. The highest density LDPE pellets is 966.7 kg/m³, and PET pellets is 1320 kg/m³. The highest compressive strength LDPE pellets is 1041.1 kg/m², and PET pellets is 615.2 kg/m². The calorific value of the recycled LDPE and PET pellets is 43.52 mJ/kg and 27.26 mJ/kg, respectively. The moisture value in each plastic pellet did not change significantly by temperature difference. Meanwhile, the economic feasibility analysis shows an NPV of Rp4,394,049,079; IRR of 25.18%; B/CR of 1.465; and PP of 5.95 years.

• Periodical: Key Engineering Materials (Volume 920)
• Pages: 129-136
• DOI: https://doi.org/10.4028/p-t0ac0q
• Online since: May 2022
• Authors: Risti Ristianingsih Badu*, Chandra Wahyu Purnomo, Budi Kamulyan
• Keywords: Economic Analysis, Extruder, LDPE, Pellet Fuel, PET, Plastic Waste

References

[1] The Central Bureau of Statistics, Indonesian Environmental Statistics 2018, The Central Bureau of Statistics, p.1–43, (2018).

[2] United Nations Environment Programme, Single-Use Plastics: A Roadmap for Sustainability, The International Environmental Technology Centre, Osaka, (2018).

[3] OA Alabi, KI. Ologbonjaye, O. Awosolu, O.E. Alalade, Public and environmental health effects of plastic wastes disposal: A review, J. Toxicol. Risk Assess. 5 (2009), 021.

[4] YA Hidayat, S. Kiranamahsa, M.A. Zamal, A study of plastic waste management effectiveness in Indonesia industries, AIMS Energy 7 (2019) 350–370.

DOI: 10.3934/energy.2019.3.350

[5] National Plastic Action Partnership, Radically Reducing Plastic Pollution in Indonesia: A Multistakeholder Action Plan, World Economic Forum, (2020).

[6] L. Warlina, Pengelolaan sampah plastik untuk mitigasi bencana lingkungan, in: Diki, S. Utami, Y.T. Hewindati, E, Herlinawati (Eds.), Peran Matematika, Sains dan Teknologi dalam Kebencanaan, Universitas Terbuka, Banten, 2019, p.89–110.

[7] A.D. Astuti, J. Wahyudi, A. Ernawati, S.Q. Aini, Kajian pendirian usaha biji plastik di kabupaten Pati, Jawa Tengah, Jurnal Litbang: Media Informasi Penelitian, Pengembangan dan Iptek 16 (2020) 95–112.

DOI: 10.33658/jl.v16i2.204

[8] H. Chandara, Sunjoto, Sarto, Plastic recycling in Indonesia by converting plastic wastes (PET, HDPE, LDPE, and PP) into plastic pellets, AJSE 3 (2016) 65–72.

DOI: 10.22146/ajse.v3i2.17162

[9] H. Sawir, Pemanfaatan sampah plastik menjadi briket sebagai bahan bakar alternatif dalam kiln di pabrik PT Semen Padang, Jurnal Sains dan Teknologi 16 (2016) 1–8.

DOI: 10.36275/stsp.v16i1.56

[10] M.P. Groover, Fundamentals of Modern Manufacturing Materials Processes and Systems, 4th ed., John Wiley & Sons, Hoboken, New Jersey, (2010).

[11] A. Hafiz, Aplikasi penghitungan pemakaian listrik rumah tangga berbasis android, JuPerSaTeK 2 (2019), 1–8.

[12] Ministry of Energy and Mineral Resources Republic of Indonesia, Peraturan Menteri Energi dan Sumber Daya Mineral tentang Pembelian Tenaga Listrik dari Pembangkit Listrik Tenaga Surya Fotovoltaik oleh PT Perusahaan Listrik Negara (Persero), Permen ESDM No. 19 Tahun 2016, p.13–19, (2016).

DOI: 10.32520/das-sollen.v5i1.1647

[13] European Commission, Guide to Cost-Benefit Analysis of Investment Projects no. 1910, The European Commission, (2008).

[14] RTS. Siagian, M.S. Surbakti, Preliminary Analysis of Economic and Financial Feasibility in Medan City Monorail Planning, The 18th FSTPT International Symposium, University of Lampung, (2015).

[15] H. Umar, Studi Kelayakan Bisnis, Gramedia Pustaka Utama, Jakarta, (2003).

[16] M. Giatman, Ekonomi Teknik, 3rd ed., PT Raja Grafindo Persada, Jakarta, (2013).

[17] W. Hielg, R. Janssen, Advancement of Pellets-related European Standards, WIP Renewable Energies, Munich, (2009).

[18] G.I. Bisharat, V.P. Oikonomopoulou, N.M. Panagiotou, M.K. Krokida, Z.B. Maroulis, Effect of extrusion conditions on the structural properties of corn extrudates enriched with dehydrated vegetables, Food Research International, 53 (2013) 1–14.

DOI: 10.1016/j.foodres.2013.03.043

[19] J. Goff, T. Whelan, D. Delaney, The Dynisco Extrusion Processors Handbook, 2nd ed., Dynisco Inc., Franklin, Massachusetts, (2000).

[20] O. Kurniawan, Marsono, Superkarbon: Bahan Bakar Alternatif Pengganti Minyak Tanah dan Gas, Penebar Swadaya, Jakarta, (2008).

[21] B. Jabłonska, P. Kiełbasa, M. Korenko, T. Drózdz, Physical and chemical properties of waste from PET bottles washing as a component of solid fuels, Energies 12 (2019) 2197.

DOI: 10.3390/en12112197

[22] W. Paramita, DM Hartono, T.E.B. Soesilo, Sustainability of refuse derived fuel potential from municipal solid waste for cement's alternative fuel in Indonesia (A case at Jeruklegi landfill, in Cilacap), IOP Conf. Ser.: Earth Environ. Sci. 159 (2018) 012027.

DOI: 10.1088/1755-1315/159/1/012027