Study of the thermal behavior, kinetics, and product characterization of biomass and low-density polyethylene co-pyrolysis by thermogravimetric analysis and pyrolysis-GC/MS

Zheng, Yunwu; Tao, Lei; Yang, Xiaoqing; Huang, Yongda; Liu, Can; Zheng, Zhifeng

doi:10.1016/j.jaap.2018.04.001

Cited by 172 publications

(50 citation statements)

References 39 publications

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“…The comparison of experimental and theoretical activation energies revealed non-additive behavior suggesting synergy in co-pyrolysis. This finding is in correspondence with the findings of previous studies on co-pyrolysis of biomass with plastics [37,50]. The activation energy of the blend has followed similar trend with recycled polyester, but at lower values until 70% of conversion degree.…”

Section: Discussionsupporting

confidence: 91%

“…The highest apparent activation energy for cattle manure pyrolysis has occurred in the third stage as 315.72 kJ/mol at a conversion degree of 0.8 and at about 615 • C. For recycled polyester on the other hand, the highest activation energy has obtained in the first stage at 0.2 conversion degree and 275 • C temperature as 301.98 kJ/mol. The mean activation energies for cattle manure [4,41] and polyester [49,50] degradation have found to be in correspondence with previous studies.…”

Section: Discussionsupporting

confidence: 90%

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Sustainable Valorization of Animal Manure and Recycled Polyester: Co-pyrolysis Synergy

Akyürek

2019

Sustainability

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In this study sustainable valorization of cattle manure, recycled polyester, and their blend (1:1 wt.%) were examined by the thermogravimetric analysis (TGA) method. Pyrolysis tests were performed at 10, 30, and 50 °C/min heating rate from room temperature to 1000 °C under a nitrogen environment with a flow of 100 cm3/min. Kinetics of decomposition were analyzed by using Flynn–Wall–Ozawa (FWO) method. Based on activation energies and conversion points, a single region was established for recycled polyester while three regions of pyrolysis were obtained for cattle manure and their blend. Comparison between experimental and theoretical profiles indicated synergistic interactions during co-pyrolysis in the high temperature region. The apparent activation energies calculated by FWO method for cattle manure, recycled polyester. and their blend were 194.62, 254.22 and 227.21 kJ/mol, respectively. Kinetics and thermodynamic parameters, including E, ΔH, ΔG, and ΔS, have shown that cattle manure and recycled polyester blend is a remarkable feedstock for bioenergy.

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Section: Discussionsupporting

confidence: 91%

Section: Discussionsupporting

confidence: 90%

Sustainable Valorization of Animal Manure and Recycled Polyester: Co-pyrolysis Synergy

Akyürek

2019

Sustainability

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“…The bubbles burst at high frequencies of vibration, producing shear waves and turbulence of high energy, which caused damage to the cell walls of the samples and facilitated the dissolution of protected bioactive substances [19,20] . TG and derivative TG (DTG) curves are used to show the relationship between the weight change of a sample and temperature, which allows for an understanding of the behaviors in pyrolysis [21] . Figure 2 shows that the pyrolysis behavior could be divided into three stages.…”

Section: Extraction Of Bioactive Substances Under Different Conditionsmentioning

confidence: 99%

Biorefinery process for production of bioactive compounds and bio-oil from Camellia oleifera shell

Wang

Yang

et al. 2019

International Journal of Agricultural and Biological Engineering

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A biorefinery process was developed in this study to obtain bioactive compounds and bio-oil from Camellia oleifera shells. Four different extraction techniques (water, ethanol, ultrasound-assisted deionized water, and ultrasound-assisted ethanol) were utilized to extract tea saponin and tannin from C. oleifera shells. Results showed that ethanol had better extraction capacity than did deionized water, and ultrasound could promote the dissolution of tannin and tea saponin in solution. The thermogravimetric curves of the samples treated under the four conditions moved toward high temperatures. This phenomenon indicated the thermal stability of the residue was significantly improved. The pretreatment showed a slight effect on the chemical compositions of bio-oil. Specifically, the samples treated with ethanol and ultrasound-assisted deionized water contained higher phenol contents (81.07% and 81.52%, respectively) than the other samples. The content of organic acid decreased with an increase in the phenol content.

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“…However, the implementation of the low-cost pathway to recycle biomasses would additionally represent a way to sequester a significant amount of CO 2 creating a material benefit as well [3]. Biomass contains a minimal amount of sulfur, nitrogen, and ash which make them more environment-friendly [4]. It is not only the carbon-neutral sources, but it has the potential applications in energy storage [3], water purification [5,6], hydrogen storage [7], and catalysis [4,8].…”

Section: Introductionmentioning

confidence: 99%

“…Biomass contains a minimal amount of sulfur, nitrogen, and ash which make them more environment-friendly [4]. It is not only the carbon-neutral sources, but it has the potential applications in energy storage [3], water purification [5,6], hydrogen storage [7], and catalysis [4,8]. In recent years, various indigenous biomass including agricultural wastes has been used enormously as a sustainable precursor to produce hydrochar, biochar, and activated carbon [4].…”

Section: Introductionmentioning

confidence: 99%

Preparation, characterization and cost analysis of activated biochar and hydrochar derived from agricultural waste: a comparative study

et al. 2019

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Utilization of low-cost, abundant and biomaterials is highly recommended for sustainable environment protection. This study presents a comparative analysis on the preparation, characterization and cost analysis of the novel activated biochar (BTS) and activated hydrochar (HTS). Teff (Eragrostis tef) straw was used as a precursor for producing BTS and HTS through pyrolysis and hydrothermal carbonization process, respectively. Both chars were further activated using 30 wt% H 3 PO 4 for 3 h activation time. The physicochemical properties of both chars were compared by different characterization techniques including BET, FTIR, XRD, SEM, and TGA. Briefly, BTS exhibited heterogeneous surface structures and comparatively larger specific surface area (627.7 m 2 /g) than that of HTS (43.8 m 2 /g) with the smooth coalesced carbon layer and dull surface edges. The XRD analysis revealed the amorphous character of HTS which is dominantly composed of AlPO 4 , whilst indicating BTS to be the crystalline structure with the very trivial amount of impurities. The oxygen-containing functional groups increased for HTS in comparison to BTS. Thermogravimetric analysis showed that HTS exhibited better thermal behaviors. Estimated costs incurred in the production of the HTS were found to be cheaper than compared to BTS. Overall, the experiment result suggested that Teff straw could have the potential for producing a low cost activated chars.

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Study of the thermal behavior, kinetics, and product characterization of biomass and low-density polyethylene co-pyrolysis by thermogravimetric analysis and pyrolysis-GC/MS

Cited by 172 publications

References 39 publications

Sustainable Valorization of Animal Manure and Recycled Polyester: Co-pyrolysis Synergy

Sustainable Valorization of Animal Manure and Recycled Polyester: Co-pyrolysis Synergy

Biorefinery process for production of bioactive compounds and bio-oil from Camellia oleifera shell

Preparation, characterization and cost analysis of activated biochar and hydrochar derived from agricultural waste: a comparative study

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