Characteristics of liquid product from the pyrolysis of waste plastic mixture at low and high temperatures: Influence of lapse time of reaction

Lee, Kyong-Hwan; Shin, Dae-Hyun

doi:10.1016/j.wasman.2005.12.017

Cited by 102 publications

(33 citation statements)

References 12 publications

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“…Studies on the pyrolysis done at 430 °C of waste plastic mixtures have also been reported by Bhaskar et al [9], describing the yield of liquid, gas, and residue from municipal waste plastic as being 59, 25, and 16 % weight, respectively. There is a significant level of liquid yield from pyrolysis; similar results have also been reported by Lee and Shin [2] in their pyrolysis experiments conducted at 350 °C and 400 °C. The liquid products obtained from the pyrolysis of waste plastics mainly consisted of liquid paraffin, liquid olefin, liquid naphthene, and liquid aromatics, with their relative proportions varying with polymer types, temperature, and lapse time.…”

Section: Pyrolysis Of Waste Plasticsupporting

confidence: 86%

“…These methods have caused serious environmental problems and had led to the necessity of more efficient and novel recycling approaches that will not hurt the environment at the effective cost. According to the statistic, waste plastic component only summed up to about 10 % of municipal solid waste (MSW), but due to its high volume to plastic ratio properties and also high resistance to chemical, weather, and harsh conditions, the amount of waste plastics piled up are worrying [1,2]. Only 12 % of these waste plastic is incinerated while the remainder is end up to be landfilled.…”

Section: Introductionmentioning

confidence: 99%

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Interaction between Polyethylene and Petroleum Coke Substrate during Pyrolysis

Shahnaz¹

2017

Pyrolysis

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There has been a constant growth for plastic demand globally in the past decades, and the continuing expanding trend with rapid emerging economies has increased the concerns of many parties. Various approaches of recycling waste plastic including chemical recycling, thermal recycling, and mechanical recycling has been practiced. As chemical recycling is known to be a promising method in recovering hydrocarbon compounds, which can be used in high-end product, new avenues for waste recycling need to be established. Consumable carbon anodes are a major requirement for process used for producing primary aluminum. Since carbon is a main constituent of waste plastics, which have very low impurity levels, these clearly have the potential as a cheap readily available auxiliary source of carbon in carbon anodes. Coal tar pitch, a major by-product produced in petroleum refining, is the binder of choice for carbon anodes. Pitch penetrates the pores of petroleum coke-binding particulates and gets carbonized during the baking process. In-depth wettability and interfacial phenomena investigation was carried out to study interactions between polyethylene (PE) and petroleum coke (PC). The effect pyrolysis parameters on degradation process of PE have been characterized. The wettability study of polyethylene polymer on PC substrates has been carried out.

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Section: Pyrolysis Of Waste Plasticsupporting

confidence: 86%

Section: Introductionmentioning

confidence: 99%

Interaction between Polyethylene and Petroleum Coke Substrate during Pyrolysis

Shahnaz¹

2017

Pyrolysis

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“…Another alternative for BSG reuse is thermochemical conversion, since the chemical composition of BSG indicates high energy potential to be exploited by recovery techniques [17]. Conventional gasification [18][19][20][21][22][23] and plasma gasification [24,25] are some of these thermochemical techniques with high potential to produce alternative fuels from both efficiency and economic perspectives [26]. It is considered an important route to convert biomass and waste materials to useful gas products that can be converted into energy via several technological options [27].…”

Section: Introductionmentioning

confidence: 99%

Experimental Analysis of Brewers’ Spent Grains Steam Gasification in an Allothermal Batch Reactor

et al. 2019

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In this work, brewers’ spent grains (BSG) were evaluated and studied in order to obtain a combustible gas by means of allothermal steam gasification. BSG were preprocessed in a rotary dryer and a pelletizer prior to gasification in an indirectly heated batch reactor. BSG characterization was conducted by means of proximate, ultimate, and thermogravimetric analysis, allowing us to conclude that BSG have characteristics comparable to those of regular lignocellulosic biomasses. Gasification tests were performed in an allothermal bench-scale batch reactor in order to determine the effect of temperature and steam-to-biomass ratio (S/B) in the produced gas. The produced gas was mainly composed of 22.8–30.2% H2, 15.1–22.3% CO, and 7.2–11.1% CH4, contributing to a heating value of 8.11–9.0 MJ/Nm3 with the higher values found for a low S/B ratio and for high temperatures. The performance of the process was assessed by evaluating the cold gas and carbon conversion efficiencies. These indicators were found to be in the ranges 47.0%–52.1% and 57.0%–62.7%, respectively. The main conclusion of this work is that the produced gas obtained from BSG steam gasification has sufficient quality to open other options to beer producers to use their own brewing wastes to satisfy their energy needs, allowing them to progress toward the circular economy concept.

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“…Moreover, the oil obtained by pyrolysis of plastic wastes has a wide molecular weight distribution with poor economical value, which does not have a sufficient quality to use as alternative fuel oils (Marcilla et al, 2009). The pyrolysis of polyethylene with high proportion in mixed plastic produces much more unstable heavy compounds with high viscosity as low grade product (Marcilla et al, 2009;Lee & Shin, 2007). The characteristics of these products depend on the nature of plastic waste and process conditions.…”

Section: Introductionmentioning

confidence: 99%