PENGOLAHAN LIMBAH PLASTIK HIGH DENSITY POLYETHYLENE (HDPE) MENGGUNAKAN METODE PIROLISIS DENGAN KATALIS BENTONIT TERAKTIVASI ASAM SULFAT (H2SO4)

Siska Wulandari, NIM.: 20106030004 (2024) PENGOLAHAN LIMBAH PLASTIK HIGH DENSITY POLYETHYLENE (HDPE) MENGGUNAKAN METODE PIROLISIS DENGAN KATALIS BENTONIT TERAKTIVASI ASAM SULFAT (H2SO4). Skripsi thesis, UIN SUNAN KALIJAGA YOGYAKARTA.

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	Text (PENGOLAHAN LIMBAH PLASTIK HIGH DENSITY POLYETHYLENE (HDPE) MENGGUNAKAN METODE PIROLISIS DENGAN KATALIS BENTONIT TERAKTIVASI ASAM SULFAT (H2SO4)) 20106030004_BAB-II_sampai_SEBELUM-BAB-TERAKHIR.pdf - Published Version Restricted to Registered users only Download (2MB) | Request a copy

Abstract

HDPE plastic waste is one of the most commonly found types of plastic in Indonesia due to its high usage as packaging material, necessitating efficient processing methods to address this issue. The processing of High Density Polyethylene (HDPE) plastic waste using the pyrolysis method with sulfuric acid (H2SO4) activated bentonite catalyst has been conducted. This research aims to determine the functional group characteristics and crystallinity of bentonite catalyst and the effect of using this catalyst on the pyrolysis oil product based on parameters such as density, viscosity, calorific value, and flash point, as well as chemical composition based on GC-MS analysis. Sulfuric acid activation of bentonite was carried out with a sulfuric acid concentration of 1.5 M. FTIR test of natural bentonite showed several main peaks in the functional group region, namely 3618.46; 3417.86; and 1635.64 cm-1. The XRD diffractogram indicates the presence of montmorillonite at the absorption peak of 2θ = 5.68° with a basal spacing (d) of 15.55 Å and 2θ = 19.80° with a basal spacing (d) of 4.480 Å, as well as an average crystal size of 5.8 nm. After the bentonite catalyst activation process, there is a shift in the wave number at the absorption peak of the FTIR spectra, and changes occur in the 2θ and basal spacing values, which increase, as well as an increase in the average crystal size to 9.1 nm. The HDPE sample used was 100 g with the addition of bentonite catalyst in 5 variations: 5; 10; 15; 20; and 25 g. The highest yield of pyrolysis product was obtained with the addition of 5 grams of catalyst to 100 g of plastic waste sample. The liquid product produced in this variable was 67.13% with density, viscosity, calorific value, and flash point of 814.05 kg/m3, 2.3 cSt, 42.5 MJ/kg, and 46 ℃, respectively. The increase in the amount of bentonite catalyst added provided differences in the quality of the pyrolysis oil results. The more bentonite catalyst added, the clearer the oil produced. GC-MS analysis of the pyrolysis oil resulted in three main alkane components such as decane, dodecane, and tetradecane.

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