Preparation and Properties of Wood Tar-based Rejuvenated Asphalt

Zhang, Xuefei; Zhu, Juncai; Wu, Chaofan; Wu, Qingding; Liu, Kefei; Jiang, Kang

doi:10.3390/ma13051123

Cited by 16 publications

(7 citation statements)

References 66 publications

(69 reference statements)

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“…Biomass pyrolysis usually also produces by-products, bio-oil, and tail gas. High temperature heating of the biomass in the pyrolysis process caused irregular thermal movement in the internal molecular structure of the biomass and eventually decomposition into small molecule polymer [20]. Both biochar and by-products can be generally well-obtained at conventional heating rate of 10 • C•min −1 [21].…”

Section: Introductionmentioning

confidence: 99%

The Eco-Friendly Biochar and Valuable Bio-Oil from Caragana korshinskii: Pyrolysis Preparation, Characterization, and Adsorption Applications

et al. 2020

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Carbonization of biomass can prepare carbon materials with excellent properties. In order to explore the comprehensive utilization and recycling of Caragana korshinskii biomass, 15 kinds of Caragana korshinskii biochar (CB) were prepared by controlling the oxygen-limited pyrolysis process. Moreover, we pay attention to the dynamic changes of microstructure of CB and the by-products. The physicochemical properties of CB were characterized by Scanning Electron Microscope (SEM), BET-specific surface area (BET-SSA), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), Fourier Transform Infrared (FTIR), and Gas chromatography-mass spectrometry (GC-MS). The optimal preparation technology was evaluated by batch adsorption application experiment of NO3−, and the pyrolysis mechanism was explored. The results showed that the pyrolysis temperature is the most important factor in the properties of CB. With the increase of temperature, the content of C, pH, mesoporous structure, BET-SSA of CB increased, the cation exchange capacity (CEC) decreased and then increased, but the yield and the content of O and N decreased. The CEC, pH, and BET-SSA of CB under each pyrolysis process were 16.64–81.4 cmol·kg−1, 6.65–8.99, and 13.52–133.49 m2·g−1, respectively. CB contains abundant functional groups and mesoporous structure. As the pyrolysis temperature and time increases, the bond valence structure of C 1s, Ca 2p, and O 1s is more stable, and the phase structure of CaCO3 is more obvious, where the aromaticity increases, and the polarity decreases. The CB prepared at 650 °C for 3 h presented the best adsorption performance, and the maximum theoretical adsorption capacity for NO3− reached 120.65 mg·g−1. The Langmuir model and pseudo-second-order model can well describe the isothermal and kinetics adsorption process of NO3−, respectively. Compared with other cellulose and lignin-based biomass materials, CB showed efficient adsorption performance of NO3− without complicated modification condition. The by-products contain bio-soil and tail gas, which are potential source of liquid fuel and chemical raw materials. Especially, the bio-oil of CB contains α-d-glucopyranose, which can be used in medical tests and medicines.

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Section: Introductionmentioning

confidence: 99%

The Eco-Friendly Biochar and Valuable Bio-Oil from Caragana korshinskii: Pyrolysis Preparation, Characterization, and Adsorption Applications

et al. 2020

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“…Even though bio-oils were extensively used as fuels or for the separation of high-value chemicals [12,13], the valorization of tar has been barely explored [14]. For example, tar was used as partial replacement of phenol in phenolic resins [15] and asphalt production [16]. Recently, pyrolytic tar was used for the synthesis of microparticles [17].…”

Section: Introductionmentioning

confidence: 99%

Bio-composite Films Based on Alginate and Rice Husk Tar Microparticles Loaded with Eugenol for Active Packaging

Taverna

Busatto

Saires

et al. 2022

Waste Biomass Valor

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This work focused on the valorization of tar derived from rice husk pyrolysis as a precursor of matrices for the encapsulation of active principles. In this regard, the development of novel films based on alginate and eugenol-loaded tar microparticles with suitable mechanical properties and antibacterial activity was studied. Tar microparticles loaded with eugenol were incorporated into sodium alginate films and the effect on the mechanical, thermal and humidity resistance properties were determined, as well as the antimicrobial activity. Films with different crosslinking degrees were also prepared using CaCl 2 , and the eugenol controlled release profiles were evaluated. Crosslinked films exhibited improved mechanical and humidity resistance properties, as well as a lower release rate of eugenol in water. The antimicrobial studies showed that eugenol-loaded films present a higher antimicrobial activity against Staphylococcus aureus. Alginate/eugenol-loaded tar microparticles composites showed an enhancement of antibacterial properties and suitable physical characteristics to be used in active packaging applications.

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“…Therefore, scholars in the industry have conducted a lot of experimental researches on aging asphalt pavements and have proposed a variety of asphalt pavement regeneration schemes [4,5]. The use of regenerant to improve the performance index of aging asphalt has also been proposed to restore the technical index of the original asphalt [6]. SBS modified asphalt is different from other road petroleum asphalt that it can improve the performance of high temperature rutting resistance and low temperature cracking resistance at the same time, so it is widely used in road construction.…”

Section: Introductionmentioning

confidence: 99%

The influence of regenerant with different dosages on the performance of aged SBS modified asphalt

Wang¹,

Xu²,

Wu³

et al. 2022

Vib. proced.

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In asphalt pavement thermal regeneration, incorporation of regenerant can restore the properties of aged SBS modified asphalt, but the effect of regenerant on the recovery of aged asphalt and the dosage of regenerant are not clear. In this study, experiments are carried to determine the effect of regenerant on the performance of aged SBS modified asphalt and the appropriate dose. Accelerated aging test is conducted by rolling thin film oven test (RTFOT) at different times. Then, different doses of regenerant (2 %, 4 %, 6 %, 8 %, 10 %, 12 %) are added to the specimens before and after aging, and test its technical indexes such as penetration, softening point and ductility to analyze the effect of regenerant on the properties of aged asphalt. The results show that: with the increase of the amount of regenerating agent, the aging asphalt performance indexes are restored, the softening point of regenerated asphalt is reduced, and the ductility and needle penetration are increased. Based on the analysis of the relationship between the aging time of SBS modified asphalt and the amount of regenerant, interpolation fitting is carried out to obtain the formula for the best amount of regenerant, so as to determine the best regenerant dosage for aged asphalt mixes in actual engineering applications.

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Preparation and Properties of Wood Tar-based Rejuvenated Asphalt

Cited by 16 publications

References 66 publications

The Eco-Friendly Biochar and Valuable Bio-Oil from Caragana korshinskii: Pyrolysis Preparation, Characterization, and Adsorption Applications

The Eco-Friendly Biochar and Valuable Bio-Oil from Caragana korshinskii: Pyrolysis Preparation, Characterization, and Adsorption Applications

Bio-composite Films Based on Alginate and Rice Husk Tar Microparticles Loaded with Eugenol for Active Packaging

The influence of regenerant with different dosages on the performance of aged SBS modified asphalt

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