Wood/plastic copyrolysis in an auger reactor: Chemical and physical analysis of the products

Bhattacharya, Priyanka; Steele, Philip H.; Hassan, El Barbary; Mitchell, Brian; Ingram, Leonard L.; Pittman, Charles U.

doi:10.1016/j.fuel.2009.01.009

Cited by 168 publications

(58 citation statements)

References 21 publications

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“…Potential benefits of co-processing include the volume reduction of waste, the recovery of various chemicals, and the replacement of fossil fuels [16]. In fact, a synergistic effect in terms of enhanced liquid yields and mechanistic explanations therefore has recently been reported [17][18][19][20][21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Thermal degradation of rice-bran with high density polyethylene: A kinetic study

Rotliwala¹,

Parikh

2011

Korean J. Chem. Eng.

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Thermal degradation behavior of mixtures of rice bran (RB) and high density polyethylene (HDPE) was investigated by thermo-gravimetric analyses (TGA) under dynamic conditions in nitrogen atmosphere and was compared with that of individual materials. Experiments were carried out in the range of ambient temperature to 900 o C at two heating rates (5 and 20 o C per minute). Kinetic analysis indicated that activation energy for pyrolysis of RB, HDPE and those for RB-HDPE mixtures varied with rate of heating as well as with the three temperature ranges. This variation has been explained on the materials' decomposition behavior. Maximum difference between experimental and theoretical mass loss (∆m) was 26% at 475 o C and 34% at 489 o C at the heating rates of 5 and 20 o C per minute, respectively. These maxima indicate stronger interactions at corresponding temperature between RB and HDPE during copyrolysis. Reduction in activation energy for pyrolysis, lower temperatures at which rate of decomposition is highest, and negligible quantity of the residue suggest a synergism between thermal degradation of RB and HDPE.

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Section: Introductionmentioning

confidence: 99%

Thermal degradation of rice-bran with high density polyethylene: A kinetic study

Rotliwala¹,

Parikh

2011

Korean J. Chem. Eng.

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“…Compared with the degradation composition of HDPE and PW, almost all identified products originated from WPCs thermal decomposition were observed in the individual pyrolyses of PW or HDPE. This indicates that the thermal cracking of WPCs includes HDPE and poplar wood pyrolysis (Bhattacharya et al 2009), and the addition reactions (e.g., olefin hydration, phenol alkylation, etherification, etc.) did not occur during pyrolysis, probably due to the absence of acid-catalyzed conditions.…”

Section: Resultsmentioning

confidence: 99%

“…Wood with plastic co-pyrolysed in an auger reactor was reported, and the pyrolysis oil obtained from co-pyrolyses of HDPE with pine wood were upgraded relative to bio-oils produced from pine wood alone, with higher heating values and lower oxygen contents, acid values, water contents, and densities (Bhattacharya et al 2009). Brebu et al (2010) studied the co-pyrolysis of pine cone with synthetic polymers and found that higher amounts of liquid products were obtained compared to theoretical ones due to the synergistic effect in the pyrolysis of the biomass/polymer mixtures.…”

Section: Introductionmentioning

confidence: 99%

Study on the Pyrolytic Behavior of Wood-Plastic Composites using Py-GC/MS

et al. 2013

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Pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) was employed to investigate the primary pyrolysis product distribution of the pyrolysis of wood-plastic composites (WPCs) and the mutual effects of poplar wood (PW) and high-density polyethylene (HDPE). The PW, HDPE, and WPCs were pyrolysed at 475, 550, and 625 °C. The effect of temperature on the WPC pyrolysis products was examined. The comparison of the degradation composition results for HDPE, PW, and WPCs indicated that thermal degradation of WPCs comprised individual poplar wood and HDPE pyrolytic decompositions, and the pyrolytic products of PW and HDPE did not react with each other. The experimental results demonstrate that the pyrolytic product distribution of HDPE changed apparently in the presence of PW during pyrolysis. The PW decomposed at lower temperature during pyrolysis provided radicals, enhancing the scission of polymer chains to obtain more light paraffins. Further, the proposed pathway for the evolution of the main volatile organic products was probed. This study provides insights into the fundamental mechanisms of WPC pyrolysis and a basis for developing more descriptive models of WPC pyrolysis.

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“…Table 4 lists the chemical name, structural formula and percentage area covered in the GC graph. The percentage area covered by each compound is a qualitative indication of the concentration in the total liquid product (Bhattacharya et al 2009). The glycerin concentration is the highest at approximately 42%, followed by methanamine at 10.2%.…”

Section: Gc-ms Analysismentioning

confidence: 99%

Production of Pyrolyzed Oil from Crude Glycerol using a Microwave Heating Technique

Leong

Lam

Ani³

et al. 2016

IJTech

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Crude glycerol, a by-product of biodiesel production created via transesterification was pyrolyzed using a microwave heating technique in an oxygen-deficient environment. Coconut shell-based activated carbon was used as a catalyst to assist in the heat transfer and the cracking of glycerol into gaseous and liquid products. Investigation into the product yield was conducted by varying the pyrolysis temperature between 300°C and 800°C. The result revealed that liquid and gaseous pyrolysis products yield fell in the range of 15−42% and 55−82% by mass, respectively. An analysis of the liquid product using gas chromatography mass spectrometry (GC-MS) shows that glycerin (C 3 H 8 O 3 ), methanamine (CH 5 N), and cyclotrisiloxane (C 6 H 18 O 3 Si 3 ) were among the highest derived compounds in the pyrolyzed liquid yield. The derived pyrolysis products can potentially be used as alternative fuels in combustion systems.

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Wood/plastic copyrolysis in an auger reactor: Chemical and physical analysis of the products

Cited by 168 publications

References 21 publications

Thermal degradation of rice-bran with high density polyethylene: A kinetic study

Thermal degradation of rice-bran with high density polyethylene: A kinetic study

Study on the Pyrolytic Behavior of Wood-Plastic Composites using Py-GC/MS

Production of Pyrolyzed Oil from Crude Glycerol using a Microwave Heating Technique

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