Production of low-density poly-ethylene (LDPE) from chemical recycling of plastic waste: Process analysis

2020 ◽  
Vol 253 ◽  
pp. 119837 ◽  
Author(s):  
Claudia Santagata ◽  
Gaetano Iaquaniello ◽  
Annarita Salladini ◽  
Emanuela Agostini ◽  
Mauro Capocelli ◽  
...  
Keyword(s):  
Process Analysis ◽  
Plastic Waste ◽  
Chemical Recycling ◽  
Low Density ◽  
Poly Ethylene

scholarly journals Kajian Karakteristik dan Energi pada Pirolisis Limbah Plastik Low Density Polyethylene (LDPE)

2021 ◽  
Vol 5 (1) ◽  
pp. 61
Author(s):  
Novarini Novarini ◽  
Sigit Kurniawan ◽  
Rusdianasari Rusdianasari ◽  
Yohandri Bow
Keyword(s):  
Energy Efficiency ◽  
Sulfur Content ◽  
Kinematic Viscosity ◽  
Flash Point ◽  
Plastic Waste ◽  
Fuel Oil ◽  
Low Density ◽  
Liquefied Petroleum Gas ◽  
Pyrolysis Process ◽  
Poly Ethylene

Limbah plastik Low Density Poly Ethylene (LDPE) tidak dapat terurai oleh mikroorganisme, tidak bernilai jual sehingga tertimbun di Tempat Pembuangan Sampah Akhir. Salah satu metoda pengolahan limbah plastik adalah proses pirolisis. Tujuan penelitian ini menentukan jenis bahan bakar minyak (BBM) produk pirolisis dan menentukan efisiensi tertinggi yaitu nilai tertinggi energi yang dihasilkan terhadap penggunaan bahan bakar untuk proses pirolisis. Peralatan pirolisis yang digunakan adalah 1 unit reaktor dan 1 unit kondensor. Karakteristik BBM yang dianalisa adalah cetane index, density, sulfur content, kinematic viscosity, flash point, dan caloric value dari proses pirolisis yang memvariasikan temperatur pembakaran di reaktor 200°C, 250°C, 300°C dan proses di reaktor dengan dan tanpa penggunaan 1% katalis zeolit alam terhadap 2,5 kg limbah plastik LDPE selama 6 jam. Setelah BBM yang dihasilkan terindentifikasi jenisnya, dilakukan pengkajian efisiensi energi produk BBM terhadap penggunaan bahan bakar pada proses pirolisis. Hasil analisa terhadap karakteristik produk BBM yang dihasilkan di setiap variasi temperatur pirolisis dengan dan tanpa penggunaan katalis merupakan bahan bakar jenis kerosin. Efisiensi tertinggi sebesar 72,51% adalah pada kerosin yang dihasilkan pada pirolisis menggunakan katalis pada temperatur 250°C dengan perbandingan nilai energi 20.402 kkal untuk kerosin hasil pirolisis limbah plastik LDPE dan 28.137 kkal untuk penggunaan bahan bakar Liquefied Petroleum Gas (LPG) pada proses pirolisis. Pirolisis dengan penggunaan katalis zeolit 1% pada suhu 250°C terbukti menjadi cara yang efisien dan berkelanjutan untuk pengolahan limbah LDPE menjadi BBM jenis kerosin.Low-Density Poly Ethylene (LDPE), plastic waste cannot be broken down by microorganisms in the soil, has no sale value, so it is buried in the final waste disposal site. One of the plastic waste treatment methods is the pyrolysis process. The purpose of this study was to determine the type of fuel oil from pyrolysis products and to determine the energy efficiency produced against the highest fuel use. The pyrolysis equipment used is 1 reactor unit and 1 condenser unit. The characteristics of the fuel oil product analyzed are the cetane index, density, sulfur content, kinematic viscosity, flash point, and caloric value of the pyrolysis process which varies the combustion temperature in the reactor by 200°C, 250°C, 300°C and the process in the reactor, with and without the use of natural zeolite catalysts 1% against 2.5 kg of LDPE plastic waste for 6 hours. After the type of fuel produced is identified, an energy efficiency assessment of the fuel product is carried out on the use of fuel in the pyrolysis process. The results analysis show that the all product of fuel oil is a kerosene-type of fuel. The highest efficiency of 72.51% is the kerosene produced in pyrolysis using a catalyst at a temperature of 250°C with an energy value ratio of 20,402 kcal for kerosene from pyrolysis of LDPE plastic waste and 28,137 kcal for the use of Liquefied Petroleum Gas (LPG) fuel in the pyrolysis process. Pyrolysis using a 1% zeolite catalyst at 250°C has proven to be an efficient and sustainable way to treat LDPE waste into kerosene fuel.

scholarly journals Kajian Pendirian Usaha Biji Plastik di Kabupaten Pati, Jawa Tengah

2020 ◽  
Vol 16 (2) ◽  
pp. 95-112
Author(s):  
Arieyanti Dwi Astuti ◽  
Jatmiko Wahyudi ◽  
Aeda Ernawati ◽  
Siti Qorrotu Aini
Keyword(s):  
Net Present Value ◽  
Plastic Waste ◽  
Raw Material ◽  
Small Scale ◽  
Low Density ◽  
Financial Perspective ◽  
Small Scale Industry ◽  
Poly Ethylene ◽  
Simple Technology ◽  
A Company

ENGLISHEstablishment of a company which recycles plastic waste into plastic pellet not only benefits for eliminating waste but also for driving circular economy. Recycling plastic waste in particular low density polyethylene (LDPE) can be conducted in a small-scale industry with simple technology and low investment. This study aims to analyze the feasibility of a plastics pellet business from both financial and non-financial perspectives. Financial perspective encompasses net present value (NPV), internal rate of return (IRR) and payback period (PP) while non-financial perspective includes market, technical, socio-economic and environmental aspects. The result shows that according to both financial and non-financial aspects, the establishment of recycling company is feasible. The recycling business has the NPV= IDR 10,631,879,342; IRR = 15.38%; and PP = 2 years 1 months 26 days. As main raw material, LDPE is abundant and the demand for plastic pellet continues to grow. Technically, the company will be situated close to landfill considering many factors in order to comply with the regulation. From socio-economic aspect, the company will create jobs and generates local taxes. Environmentally, utilizing 3.6 tons of LDPE daily from landfill enables the company to lengthen life span of landfill and to eliminate plastic waste. INDONESIAPendirian perusahaan daur ulang yang memproses sampah plastik menjadi biji plastik memberikan manfaat tidak hanya untuk mengurangi timbulan sampah namun juga dapat untuk menggerakkan perputaran ekonomi. Daur ulang sampah plastik khususnya plastik jenis Low Density Poly Ethylene (LDPE) dapat dijalankan oleh perusahaan berskala kecil dengan menggunakan teknologi sederhana dan modal yang tidak terlalu tinggi. Tujuan penelitian ini untuk menganalisis kelayakan usaha biji plastik ditinjau dari aspek finansial dan non finansial. Analisis data menggunakan pendekatan kuantitatif. Hasil penelitian menunjukkan bahwa usaha daur ulang sampah plastik jenis LDPE menjadi biji plastik layak untuk dijalankan. Berdasarkan aspek finansial, usaha ini memiliki nilai NPV = Rp10.631.879.342; IRR = 15,38%; PP = 2 tahun 1 bulan 26 hari. Bahan baku sampah plastik LDPE tersedia melimpah dan belum banyak didaur ulang. Selain itu permintaan terhadap produk biji plastik terus mengalami peningkatan. Lokasi perusahaan direncanakan terletak tidak jauh dari Tempat Pemrosesan Akhir (TPA) Sukoharjo Kabupaten Pati dengan pertimbangan lokasi tersebut memenuhi persyaratan yang ditetapkan oleh peraturan. Pendirian usaha daur ulang berpotensi membuka lapangan kerja dan memberikan pajak daerah. Ditinjau dari aspek lingkungan, kemampuan perusahaan untuk mendaur ulang 3,6 ton sampah plastik LDPE per hari berkontribusi untuk memperpanjang usia pakai TPA dan dapat mengurangi timbulan sampah plastik.

scholarly journals Organocatalyzed closed-loop chemical recycling of thermo-compressed films of poly(ethylene furanoate)

2021 ◽  
Author(s):  
Elena Gabirondo ◽  
Beatriz Melendez-Rodriguez ◽  
Carmen Arnal ◽  
Jose M. Lagaron ◽  
Antxon Martínez de Ilarduya ◽  
...  
Keyword(s):  
Closed Loop ◽  
Chemical Recycling ◽  
Thermally Stable ◽  
Poly Ethylene

Poly(ethylene furanoate) (PEF) films were first produced using thermo-compression. Thereafter, the chemical recyclability was demonstrated in the presence of a thermally stable organocatalyst followed by its repolymerization.

Effect of Cobalt Stearate and Vegetable Oil on Uv and Biodegradation of Linear Low-Density Poly(Ethylene)-Poly(Vinyl Alcohol) Blends

2011 ◽  
Vol 2 (4) ◽  
pp. 131-148 ◽  
Author(s):  
Francis Vidya ◽  
Subin S. Raghul ◽  
Sarita G Bhat ◽  
Eby Thomas Thachil
Keyword(s):  
Vegetable Oil ◽  
Vinyl Alcohol ◽  
Water Soluble ◽  
Poly Vinyl Alcohol ◽  
Low Density ◽  
Compression Moulding ◽  
Melt Mixing ◽  
Degradation Behaviour ◽  
Moulding Process ◽  
Poly Ethylene

The main objective of this study was to enhance the rate of UV and biodegradation of polyethylene by incorporating biodegradable materials and prooxidants. Prooxidants such as transition metal complexes are capable of initiating photooxidation and polymer chain cleavage, rendering the product more susceptible to biodegradation. In this work, the effect of (1) a metallic photoinitiator, cobalt stearate, and (2) different combinations of cobalt stearate and vegetable oil on the photooxidative degradation of linear low-density poly(ethylene)-poly(vinyl alcohol) (LLDPE/PVA) blend films has been investigated. For this, film-grade LLDPE was blended with different proportions of PVA. PVA is widely used in the industrial field, and recently it has attracted increasing attention as a water-soluble biodegradable polymer. Cobalt stearate and vegetable oil were added to the blends as prooxidants. The blends were prepared by melt mixing in a Thermo HAAKE Polylab system. Thin films containing these additives were prepared by a subsequent compression moulding process. The effect of UV exposure on LLDPE/PVA films in the presence as well as absence of these additives was investigated. Tensile properties, FTIR spectra, and scanning electron microscopy (SEM) were employed to investigate the degradation behaviour. It was found

scholarly journals Identification of LDPE Grades Focusing on Specific CH2 Raman Vibration Modes

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Richard Jumeau ◽  
Patrice Bourson ◽  
Michel Ferriol ◽  
François Lahure ◽  
Marc Ponçot ◽  
...  
Keyword(s):  
Differential Scanning Calorimetry ◽  
Raman Spectroscopy ◽  
Vibrational Spectroscopy ◽  
Phenomenological Model ◽  
Low Density ◽  
Vibration Modes ◽  
Scanning Calorimetry ◽  
Lamella Thickness ◽  
Poly Ethylene

The possibilities of applications of vibrational spectroscopy techniques (Raman spectroscopy) in the analysis and characterization of polymers are more and more used and accurate. In this paper, our purpose is to characterize Low Density Poly(Ethylene) (LDPE) grades by Raman spectroscopy and in particular with CH2 Raman vibration modes. With temperature measurements, we determine different amorphous and crystalline Raman assignments. From these results and on the basis of the evolution of CH2 bending Raman vibration modes, we develop a phenomenological model in correlation with Differential Scanning Calorimetry and in particular with crystalline lamella thickness determination.

Chemical recycling of plastic waste via thermocatalytic routes

2021 ◽  
pp. 128989
Author(s):  
Jechan Lee ◽  
Eilhann E. Kwon ◽  
Su Shiung Lam ◽  
Wei-Hsin Chen ◽  
Jörg Rinklebe ◽  
...  
Keyword(s):  
Plastic Waste ◽  
Chemical Recycling
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