Biodegradation of Low Density Polyethylene (LDPE) by Mesophilic fungus “Penicillium citrinum” isolated from soils of plastic waste dump yard, Bhopal, India

2022 ◽  
pp. 1-28
Author(s):  
Shazia Khan ◽  
Sharique A. Ali ◽  
Ayesha S. Ali
Keyword(s):  
Plastic Waste ◽  
Penicillium Citrinum ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Waste Dump ◽  
Dump Yard

scholarly journals Compressive Strength and Bulk Density of Concrete Hollow Blocks (CHB) Infused with Low-density Polyethylene (LDPE) Pellets

2020 ◽  
Vol 6 (10) ◽  
pp. 1932-1943
Author(s):  
Alvin Joseph Santos Dolores ◽  
Jonathan David Lasco ◽  
Timothy M. Bertiz ◽  
Kimjay M. Lamar
Keyword(s):  
Compressive Strength ◽  
Bulk Density ◽  
Plastic Material ◽  
The Philippines ◽  
Plastic Waste ◽  
Low Density Polyethylene ◽  
Partial Replacement ◽  
Low Density ◽  
Environment Friendly ◽  
Industry Practice

Infusing plastic waste to concrete and masonry structures is an increasingly common industry practice that has the potential to create an environment-friendly material that can improve some of the material’s properties, craft a novel means to repurpose plastic waste, and reduce the need for mining aggregates in the environment. This concept has been studied extensively in different forms of concrete, as shown by several studies; however, there is a dearth of studies focusing on the incorporation plastic waste in concrete hollow blocks (CHB). In this study, we aim to fill that gap by investigating on the effects of incorporating low-density polyethylene (LDPE), a commonly used plastic material, to CHB on its compressive strength and bulk density. Samples of varying percentages of LDPE replacement by volume (0, 10, 20, 30 and 40%) were fabricated and tested. Results showed a general trend of decreasing compressive strength and bulk density upon increasing the amount of LDPE pellets in CHB, which was also observed in previous studies. However, the compressive strength of CHB increased at 10% LDPE replacement, a result similar to a previous study. It was inferred that the strength of the plastic material could have a direct contribution to the compressive strength of CHB at low percentage of aggregate replacement. Statistical analysis showed that the mix with 10% LDPE pellets as replacement to sand was the best among the samples tested. It was shown that CHB infused with LDPE pellets has a higher compressive strength than what is normally used in the Philippines. It was concluded that based on compressive strength and bulk density, LDPE pellets is a viable material to use as partial replacement to sand in non-load bearing CHB.

scholarly journals DURABILITAS CAMPURAN LASTON LAPIS AUS (AC-WC) DI SUBSTITUSI LIMBAH LOW DENSITY POLYETHYLENE (lDPE) DENGAN CARA KERING TERHADAP RENDAMAN KOTORAN SAPI

2018 ◽  
Vol 1 (3) ◽  
pp. 689-700
Author(s):  
Rajib Muammar ◽  
Sofyan M. Saleh ◽  
Yuhanis Yunus
Keyword(s):  
Asphalt Mixture ◽  
Plastic Waste ◽  
Low Density Polyethylene ◽  
High Water Content ◽  
Cow Dung ◽  
Low Density ◽  
Additional Material ◽  
Road Asphalt ◽  
Dry Process ◽  
Substitute Material

Abstract: The high road surface temperatures, precipitation and traffic loads are several causes that damage of asphalt course. In Aceh, cow dung is often found on the roads. Cow dung is rich in nutrients and has high water content. It is alledgly the factors causing damage to the roads pavement. One way to overcome the damage of pavement is by modifying the asphalt by using additional material which is a polymer. The polymer used in plastic waste made of Low Density Polyethylene (LDPE) as road asphalt substitute. The main objective of this study was to determine the Marshall characteristics on Asphalt Concrete Wearing Course (AC-WC) mixtures with additional slices of LDPE plastic waste 2%, 4% and 6% in the asphalt pen. 60/70 to the asphalt content by dry process and to find out the effect of the immersion of the LDPE modified asphalt mixtures in cow dung and urine with the time variations of 30 minutes, 24 hours, and 48 hours on its stability and durability. The result showed that the best stability value for the asphalt mixture without substitute material immersion in cow dung was 1181,93 kg, the best stability for value for the asphalt mixed with LDPE at the percentage 6% was 1636,57 kg on 30 minutes immersed. The parameter values for the asphalt mixture with or without the substitution of LDPE in stability, flow, MQ, density, VIM, VMA, and VFA still met the specification requirements of Bina Marga 2014. The best durability value for the asphalt mixture without substitute material immersed was 90,8%, the best durability value for the asphalt mixed with LDPE at the percentage of 6% is 95.88%. Those results met the specifications set by the Bina Marga 2014 that is ≥ 90%. The addition of LDPE in the asphalt mixture by dry process with the immersion in cow dung can affect the stability value.Abstrak: Tingginya temperatur permukaan jalan, curah hujan dan beban lalu lintas merupakan beberapa penyebab kerusakan lapisan aspal. Pada jalan didaerah Aceh banyak kita jumpai kotoran sapi berserakan di jalan. Kotoran sapi mengandung sangat banyak unsur hara dan kadar air yang cukup tinggi dan dapat diduga merupakan faktor penyebab kerusakan aspal. Salah satu cara dalam mengatasi kerusakan jalan adalah dengan memodifikasi aspal menggunakan bahan tambah yaitu polimer. Polimer yang digunakan berupa limbah plastik Polyethylene (PE) dengan jenis Low Density Polyethylene (LDPE) sebagai pensubstitusi aspal. Tujuan utama dari penelitian ini untuk mengetahui karakteristik marshall campuran Laston (AC-WC) dengan tambahan irisan limbah plastik LDPE 2%, 4%, dan 6% pada aspal pen 60/70 terhadap berat aspal dengan cara kering, serta mengetahui pengaruh rendaman kotoran dan urine sapi dengan variasi waktu 30 menit, 24 jam, dan 48 jam terhadap stabilitas dan durabilitas aspal modifikasi LDPE. Dari hasil penelitian didapatkan nilai stabilitas terbaik tanpa substitusi pada rendaman kotoran sapi yaitu 1181,93 kg, stabilitas terbaik untuk LDPE yaitu persentase 6%  1636,57 kg pada rendaman 30 menit. Nilai parameter untuk tanpa dan dengan substitusi LDPE yang dihasilkan berupa stabilitas, flow, MQ, density, VIM, VMA, dan VFA masih memenuhi persyaratan spesifikasi Bina Marga tahun 2014. Nilai durabilitas tanpa substitusi sebesar 90,8%, nilai durabilitas dengan persentase 6% LDPE merupakan yang terbaik yaitu 95,88%. Hasil tersebut memenuhi spesifikasi yang ditentukan Bina Marga tahun 2014 yaitu ≥ 90%. Penambahan LDPE dalam campuran aspal dengan cara kering  pada rendaman kotoran sapi berpengaruh pada nilai stabilitas.

scholarly journals Studi Komparasi Performa Mesin SI Berbahan Bakar Pertalite dan Plastic Pyrolysis Oil (PPO)

2021 ◽  
Vol 1 (1) ◽  
pp. 12
Author(s):  
Eqwar Saputra ◽  
Sunaryo Sunaryo
Keyword(s):  
Engine Performance ◽  
Plastic Waste ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Pyrolysis Oil ◽  
Performance Parameters ◽  
Test Bed ◽  
Gasoline Engines ◽  
Cylinder Test ◽  
Pyrolysis Method

This study aims to evaluate the performance of gasoline engines using pure fuel (pertalite) with plastic pyrolysis oil (PPO) fuel from low-density polyethylene (LDPE) plastic waste. The test was carried out on a four stroke, single cylinder test bed machine. The research begins with the manufacture of fuel from low-density polyethylene (LDPE) plastic waste using the pyrolysis method. The performance parameters evaluated are torque, power and specific fuel consumption (BSFC). The results of the test show that the engine performance using LDPE type plastic waste fuel is relatively lower than pertalite. However, the consumption of LDPE fuel is lower than pertalite.

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