Catalytic Pyrolysis of Municipal Plastic Waste to Fuel with Nickel-loaded Silica-alumina Catalysts

Wang, J.-L.; Wang, L.-L.

doi:10.1080/15567030903436814

Cited by 40 publications

(17 citation statements)

References 18 publications

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“…The use of catalyst is expected to reduce the reaction temperature, to increase the decomposition speed, and to upgrade the products. A wide variety of catalysts have been tested by researchers such as zeolite, silica alumina, and FCC catalysts [8][9][10][11]. Each catalyst has different structure and composition which affects the fuel products.…”

Section: Introductionmentioning

confidence: 99%

Liquid and Gaseous Fuel from Waste Plastics by Sequential Pyrolysis and Catalytic Reforming Processes over Indonesian Natural Zeolite Catalysts

Syamsiro

Cheng

et al. 2014

waste technol.

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In this study, the performance of several differently treated natural zeolites in a sequential pyrolysis and catalytic reforming of plastic materials i.e. polypropylene (PP) and polystyrene (PS) were investigated. The experiments were carried out on two stage reactor using semi-batch system. The samples were degraded at 500°C in the pyrolysis reactor and then reformed at 450°C in the catalytic reformer. The results show that the mordenite-type natural zeolites could be used as efficient catalysts for the conversion of PP and PS into liquid and gaseous fuel. The treatment of natural zeolites in HCl solution showed an increase of the surface area and the Si/Al ratio while nickel impregnation increased the activity of catalyst. As a result, liquid product was reduced while gaseous product was increased. For PP, the fraction of gasoline (C5-C12) increased in the presence of catalysts. Natural zeolite catalysts could also be used to decrease the heavy oil fraction (>C20). The gaseous products were found that propene was dominated in all conditions. For PS, propane and propene were the main components of gases in the presence of nickel impregnated natural zeolite catalyst. Propene was dominated in pyrolysis over natural zeolite catalyst. The high quality of gaseous product can be used as a fuel either for driving gas engines or for dual-fuel diesel engine.

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Section: Introductionmentioning

confidence: 99%

Liquid and Gaseous Fuel from Waste Plastics by Sequential Pyrolysis and Catalytic Reforming Processes over Indonesian Natural Zeolite Catalysts

Syamsiro

Cheng

et al. 2014

waste technol.

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“…Pyrolysis and catalytic reforming of municipal plastic waste, which comprise of PE, PP, and PS as impurities in municipal plastic waste were also significant. The impurities were acidic and toxic and led to easy deactivation of the catalyst in the case of the conversion of municipal plastic waste, which have been compared with the thermal degradation products from municipal plastic waste and model mixed plastics [10]. Recycling via pyrolysis is one of the promising methods for recycling waste plastics and involves thermochemical decomposition of organic and synthetic materials at elevated temperatures in the absence of oxygen to produce fuels.…”

Section: Introductionmentioning

confidence: 99%

The Production of Fuel Oil by Conventional Slow Pyrolysis Using Plastic Waste from a Municipal Landfill

Santaweesuk¹,

Janyalertadun²

2017

IJESD

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 Abstract-This paper presents the study and experimentation of fuel oil production by conventional slow pyrolysis using plastic waste from a municipal landfill. The different proportions of liquid fuel produced from landfill plastic obtained by non-catalyst conventional slow pyrolysis were studied. The landfill plastic was collected from Warinchamrap municipality landfill, in Thailand. The investigation of recycling of model and waste products based on PP, LDPE, HDPE, and mixed plastic were examined using conventional slow pyrolysis and distillation methods. The experimental results show that the reactivity of conventional slow pyrolysis and distillation can be controlled by temperature, time, and energy. The various types of plastic found in the municipal landfill were converted into differing amounts of liquid fuel. PP was converted into 80% liquid fuel, LDPE 73% to liquid fuel, HDPE to 70% liquid fuel, and mixed plastic to 46% liquid fuel. The distillation liquid fuel included high-quality liquid fuels. The liquid fuels derived from the waste plastic found in the municipal landfill was similar to petroleum diesel oil.Index Terms-Conventional slow pyrolysis, pyrolysis, municipal landfill, waste plastic oil.

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“…Incineration, on the other hand, results in the emissions of toxic pollutants into the environment [3,4,[6][7][8][9]. Chemical recycling of plastic wastes into functional products is perhaps the most preferred method of waste plastic management [10][11][12][13]. In one of the chemical recycling methods, the waste plastics are converted, in the presence of hydrogen, into high-quality liquid fuels.…”

Section: Introductionmentioning

confidence: 99%

Composite zeolite beta catalysts for catalytic hydrocracking of plastic waste to liquid fuels

Munir

Amer

Aslam

et al. 2020

Mater Renew Sustain Energy

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The conversion of model waste plastic mixture into high-value liquid product was studied in the presence of hydrogen and composites of zeolite beta catalysts. For the sake of comparison, the conversion of actual waste plastic mixture and highdensity polyethylene was also carried out. The composite zeolite beta catalysts were synthesized using a range of silica-toalumina ratios, alkali concentrations, and hydrothermal treatment times. SEM, EDX, XRD, N 2-BET, FTIR, and py-FTIR were used for the characterization of the catalysts. The catalytic experiments were conducted in a 500 ml stirred batch reactor at 20 bar initial cold H 2 pressure and the temperature of the reaction was varied between 360 and 400 °C. The two composite catalysts, BC27 and BC48, prepared without alkali pretreatment were found to be the most suitable catalysts. With BC27 and BC48 at 400 °C, 93.0 wt% conversion was obtained with actual plastic mixture and the liquid yield exceeded 68.0 wt%. Experiments with the regenerated catalysts showed their performance comparable to the fresh catalysts.

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Catalytic Pyrolysis of Municipal Plastic Waste to Fuel with Nickel-loaded Silica-alumina Catalysts

Cited by 40 publications

References 18 publications

Liquid and Gaseous Fuel from Waste Plastics by Sequential Pyrolysis and Catalytic Reforming Processes over Indonesian Natural Zeolite Catalysts

Liquid and Gaseous Fuel from Waste Plastics by Sequential Pyrolysis and Catalytic Reforming Processes over Indonesian Natural Zeolite Catalysts

The Production of Fuel Oil by Conventional Slow Pyrolysis Using Plastic Waste from a Municipal Landfill

Composite zeolite beta catalysts for catalytic hydrocracking of plastic waste to liquid fuels

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