Activated carbon adsorption of heteroatom components from pyrolysis oil for improved chemical recycling

Nguyen Luu Minh, Thien; Manhaeghe, Dave; Bernaert, Gwendoline; Hogie, Joël; Clarembeau, Michel; Van Geem, Kevin M.; De Meester, Steven

doi:10.1016/j.cej.2023.148394

Cited by 4 publications

(3 citation statements)

References 61 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…118 De Meester's group demonstrated the efficacy of activated carbon as an adsorbent in purifying pyrolysis oils. 119 The group tested activated carbon for the removal of nine of the most important heteroatom model components in pyrolysis oil: pyridine, benzonitrile, chlorobenzene, 1-chloropentane, cyclopentane, cyclopentanone, phenol, methacrylic acid, benzoic acid, and hexamethylcyclotrisiloxane. In the used model mixture, benzoic acid was most easily removed; less polar components, such as cyclopentanone, hexamethylcyclotrisiloxane, and 1-chloropentane (no detectable removal), were harder to remove without excessive dosing of the activated carbon.…”

Section: Chemical Upgrading Of Pyrolysis Productsmentioning

confidence: 99%

“…In the used model mixture, benzoic acid was most easily removed; less polar components, such as cyclopentanone, hexamethylcyclotrisiloxane, and 1-chloropentane (no detectable removal), were harder to remove without excessive dosing of the activated carbon. 119 Yao et al reported the use of supercritical fluid extraction with CO 2 for the removal of organic and inorganic impurities from PE and PP pyrolysis oil and wax. 98 The method, which is depicted in Figure 13, showed a high organic impurity removal efficiency (81% for PE, 97% for PP), along with color and small improvements.…”

Section: Chemical Upgrading Of Pyrolysis Productsmentioning

confidence: 99%

“…Pyrolysis of LDPE contaminated with PVC (4 wt %) was performed in a two-stage auger-fluidized bed reactor; the gases passed through a hydrated lime filter, resulting in a pyrolysis product with a chlorine content of 9.25 ppm . De Meester’s group demonstrated the efficacy of activated carbon as an adsorbent in purifying pyrolysis oils . The group tested activated carbon for the removal of nine of the most important heteroatom model components in pyrolysis oil: pyridine, benzonitrile, chlorobenzene, 1-chloropentane, cyclopentane, cyclopentanone, phenol, methacrylic acid, benzoic acid, and hexamethylcyclotrisiloxane.…”

Section: Chemical Upgrading Of Pyrolysis Productsmentioning

confidence: 99%

See 2 more Smart Citations

High Molecular Weight Product Formation in Polyolefin Chemical Recycling: A Comprehensive Review on Primary and Secondary Products

Van Waeyenberg,

Vikanova,

Smeyers

et al. 2024

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

Annually, an enormous amount of plastic waste is produced worldwide. This waste should be appropriately managed to limit the environmental burden. However, only a small part of plastic waste is recycled; the rest is burned, is disposed of, or ends up in the environment. In the transition toward a circular economy, chemical recycling has emerged as a promising conversion technique. Much of the research in chemical recycling focuses on producing lightweight liquids and gases. However, it is crucial to emphasize that valuable heavy products, such as waxes and lubricants, can also be obtained through upcycling. This perspective examines the chemical upcycling of polyolefin plastics into high molecular weight products, primarily focusing on waxes and lubricants. The production of heavy fractions from polyolefin plastics has the potential to be a profitable conversion strategy as value-added products are obtained. Favorable life cycle assessments prove it to be a sustainable strategy. Literature shows that different techniques, such as metathesis and hydrogenolysis catalysis or thermal pyrolysis, can be used to obtain heavy fractions from polyolefin plastics. Among these methods, thermal pyrolysis has been the subject of extensive research and is the most mature technology today. Additional chemical reactions can be used to further fine-tune the desired compositional or product properties, to clean the pyrolysis products, or to obtain other secondary products such as fuels and light olefinic gases.

show abstract

Section: Chemical Upgrading Of Pyrolysis Productsmentioning

confidence: 99%

Section: Chemical Upgrading Of Pyrolysis Productsmentioning

confidence: 99%

Section: Chemical Upgrading Of Pyrolysis Productsmentioning

confidence: 99%

See 1 more Smart Citation

High Molecular Weight Product Formation in Polyolefin Chemical Recycling: A Comprehensive Review on Primary and Secondary Products

Van Waeyenberg,

Vikanova,

Smeyers

et al. 2024

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

show abstract

Effect of pyrolysis operating conditions on the catalytic co‐pyrolysis of low‐density polyethylene and polyethylene terephthalate with zeolite catalysts

Okonsky,

Hogan,

Toraman

2024

AIChE Journal

View full text Add to dashboard Cite

In this study, the catalytic (co‐)pyrolysis of low‐density polyethylene (LDPE) and polyethylene terephthalate (PET) with HZSM‐5 and HY zeolite catalysts was conducted in a micro‐pyrolysis reactor coupled to a two‐dimensional gas chromatography system. Pyrolysis operating conditions, such as the pyrolysis temperature, the catalyst to feedstock (CF) ratio, and the LDPE:PET ratio, were varied. It was found that for the co‐pyrolysis of LDPE and PET, HZSM‐5 led to higher yields of C2‐C4 olefins and monoaromatic products. Lower CF ratios increased the yield of C2‐C4 olefins for LDPE pyrolysis, but decreased benzene yield for PET pyrolysis, concomitant with an increased yield in benzoic acid. A lower temperature of 400°C which was sufficient for the pyrolysis of LDPE, led to incomplete conversion of PET. Surface response diagrams were used to visualize the impact of the various pyrolysis operating conditions on the yield of C2‐C4 olefins and BTEX, which serve as target products for the circular economy.

show abstract

The deactivation mechanisms, regeneration methods and devices of activated carbon in applications

Wang,

Wu,

Zhang

et al. 2024

Journal of Cleaner Production

View full text Add to dashboard Cite

Activated carbon adsorption of heteroatom components from pyrolysis oil for improved chemical recycling

Cited by 4 publications

References 61 publications

High Molecular Weight Product Formation in Polyolefin Chemical Recycling: A Comprehensive Review on Primary and Secondary Products

High Molecular Weight Product Formation in Polyolefin Chemical Recycling: A Comprehensive Review on Primary and Secondary Products

Effect of pyrolysis operating conditions on the catalytic co‐pyrolysis of low‐density polyethylene and polyethylene terephthalate with zeolite catalysts

The deactivation mechanisms, regeneration methods and devices of activated carbon in applications

Contact Info

Product

Resources

About