Catalytic pyrolysis of LDPE leads to valuable resource recovery and reduction of waste problems

Shah, Jasmin; Jan, M. Rasul; Mabood, Fazal; Jabeen, Farah

doi:10.1016/j.enconman.2010.06.016

Cited by 109 publications

(42 citation statements)

References 35 publications

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“…8 Shah et al also found that liquid product yields were in the range 62-79% when using ZnO, MgO, CaC 2 , SiO 2 , Al 2 O 3 and SiO 2 -Al 2 O 3 as catalysts in pyrolysis of LDPE. 4 The system in this current work can obtain high liquid product with small amount of catalyst (catalyst to plastic waste ratio of 0.05) and at short reaction times (10 min). For example, optimum conditions for pyrolysis of HDPE with CaCO 3 are catalyst ratio of 0.2 and reaction time of 1.5 h. 5 Panda and Singh also used catalyst ratio of 0.33 with reaction time of 75 min to received highest yield of liquid product around 89.5 wt% by pyrolysis of PP with kaoline.…”

Section: Effect Of Pyrolysis Conditions On Oils Propertiesmentioning

confidence: 92%

“…3 Over the past two decades, a large number of results on catalytic pyrolysis process for plastic have been reported. [4][5][6][7][8][9][10][11][12][13][14] A wide range of catalysts such as ZnO, 4 MgO, 4 CaCO 3 , 5 CaC 2 , 4 SiO 2 , 4 Al 2 O 3 , 4 SiO 2 -Al 2 O 3 , 4 ZSM-5 zeolite, 6-8 kaolin, 9,10 red mud, 8,11 CuCO 3 , 12 and FCC, 13,14 have been used. The present study attempts to utilise bentonite clay as an inexpensive and widely abundant material as a catalyst in the pyrolysis of waste plastic.…”

Section: Introductionmentioning

confidence: 99%

“…The vast majority of these studies have only investigated the pyrolysis plastics on a lab scale (5-200 g). 4,8,9,11,[20][21][22] There are few literature examples that study pyrolysis systems on a larger scale. For example, Miandad et al examine the effect of different plastic waste types, PS, PE, PP and PET, by using 1 kg of sample in pyrolysis reactor.…”

Section: Introductionmentioning

confidence: 99%

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Catalytic pyrolysis of plastic waste for the production of liquid fuels for engines

2019

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Section: Effect Of Pyrolysis Conditions On Oils Propertiesmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Catalytic pyrolysis of plastic waste for the production of liquid fuels for engines

2019

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“…Other researchers have used catalysts to similar types of batch reactor setups to improve the evolution of hydrocarbon yields. However, high coke normally results in such setups due to the possibility of reaching elevated temperatures in such a reactor system Adrados et al, 2012;Shah et al, 2010;Abbas-Abadi et al, 2014). Vasile et al (2006) used a batch reactor to pyrolyse various waste from electrical and electronic equipment (WEEE) reaching pyrolysis oil yield of over 70 wt%.…”

Section: Main Experimental Setups and Reactors Used In Pyrolysismentioning

confidence: 99%

A review on thermal and catalytic pyrolysis of plastic solid waste (PSW)

Al–Salem

Антелава

Constantinou

et al. 2017

Journal of Environmental Management

830

435

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Plastic plays an important role in our daily lives due to its versatility, light weight and low production cost. Plastics became essential in many sectors such as construction, medical, engineering applications, automotive, aerospace, etc. In addition, economic growth and development also increased our demand and dependency on plastics which leads to its accumulation in landfills imposing risk on human health, animals and cause environmental pollution problems such as ground water contamination, sanitary related issues, etc. Hence, a sustainable and an efficient plastic waste treatment is essential to avoid such issues. Pyrolysis is a thermo-chemical plastic waste treatment technique which can solve such pollution problems, as well as, recover valuable energy and products such as oil and gas. Pyrolysis of plastic solid waste (PSW) has gained importance due to having better advantages towards environmental pollution and reduction of carbon footprint of plastic products by minimizing the emissions of carbon monoxide and carbon dioxide compared to combustion and gasification. This paper presents the existing techniques of pyrolysis, the parameters which affect the products yield and selectivity and identify major research gaps in this technology. The influence of different catalysts on the process as well as review and comparative assessment of pyrolysis with other thermal and catalytic plastic treatment methods, is also presented.

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“…The samples were injected into GC every 30 minutes. [33,34], with some modifications in order to transform the water into subcritical state. The range and levels used in this work were given in Table 1.…”

Section: Gas Chromatography-thermal Conductivity Detector (Gc-tcd)mentioning

confidence: 99%

Pyrolysis of low density polyethylene waste in subcritical water optimized by response surface methodology

Wong

Amin

Abdullah

et al. 2015

Environmental Technology

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Pyrolysis of low density polyethylene (LDPE) waste from local waste separation company in subcritical water was conducted to investigate the effect of reaction time, temperature, as well as the mass ratio of water to polymer on the liquid yield. The data obtained from the study were used to optimize the liquid yield using response surface methodology. The range of reaction temperature used was 162-338°C, while the reaction time ranged from 37 min to 143 min, and the ratio of water to polymer ranged from 1.9 to 7.1. It was found that pyrolysis of LDPE waste in subcritical water produced hydrogen, methane, carbon monoxide and carbon dioxide, while the liquid product contained alkanes and alkenes with 10-50 carbons atoms, as well as heptadecanone, dichloroacetic acid and heptadecyl ester. The optimized conditions were 152.3°C, reaction time of 1.2 min and ratio of water solution to polymer of 32.7, with the optimum liquid yield of 13.6 wt% and gases yield of 2.6 wt%.

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Catalytic pyrolysis of LDPE leads to valuable resource recovery and reduction of waste problems

Cited by 109 publications

References 35 publications

Catalytic pyrolysis of plastic waste for the production of liquid fuels for engines

Catalytic pyrolysis of plastic waste for the production of liquid fuels for engines

A review on thermal and catalytic pyrolysis of plastic solid waste (PSW)

Pyrolysis of low density polyethylene waste in subcritical water optimized by response surface methodology

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