View in EDS

Comparison of environmental impacts from pyrolysis, gasification, and combustion of oily sludge.

Saved in:
Bibliographic Details
Title: Comparison of environmental impacts from pyrolysis, gasification, and combustion of oily sludge.
Authors: Yu, Hongdi1 (AUTHOR), Lin, Fawei1 (AUTHOR) linfawei@tju.edu.cn, Guo, Xuan1 (AUTHOR), Luan, Chujun1 (AUTHOR), Li, Jiantao1,2 (AUTHOR) lijiantao@tcu.edu.cn, Li, Rundong3 (AUTHOR), Che, Lei4 (AUTHOR), Tian, Wangyang4 (AUTHOR), Chen, Guanyi5 (AUTHOR)
Source: Journal of Hazardous Materials. Dec2024, Vol. 480, pN.PAG-N.PAG. 1p.
Subjects: Waste recycling, Flue gases, Heavy metals, Power resources, Copper
Abstract: Thermochemical treatment of oily sludge (OS) has been demonstrated to be an effective approach for resource and energy recovery. However, the migration and emission of potential pollutants have limited its further development. In this study, the environmental impacts, including aromatic compounds in liquid products, N-, S-, and Cl-containing pollutants in gaseous products, and residual organic matter and heavy metals in solid residues, during the pyrolysis, gasification, and combustion processes of OS are comparatively investigated. The results indicate that the aromatics in the liquid products obtained from pyrolysis and gasification are primarily hydrocarbons with 10, 14, and 16 carbon atoms, and the corresponding degree of unsaturation is between 7 and 16. By contrast, the aromatics produced during combustion are mainly hydrocarbons with 10–12 carbon atoms and an unsaturation degree of 7. The liquid products from gasification of OS contain aromatics with more carbon atoms and a higher degree of unsaturation, suggesting potential issues of recalcitrant aromatics and tar by-products during the gasification process. The release behaviors of N-, S-, and Cl-containing pollutants during the thermochemical treatment of OS are closely related to the specific thermochemical technology and treatment temperature. At 550 °C, these pollutants are gradually released from the OS. By contrast, at 950 °C, they are released over a narrow temperature range with significantly higher concentrations. Furthermore, compared with the peak concentrations of SO 2 and HCl during thermochemical processing at 550 °C, these values increase by 1–2 orders of magnitude at 950 °C. With the increase in treatment temperature, the loss on ignition (LOI) of residues from pyrolysis or gasification of OS gradually decreases and stabilizes around 0.5 %. On the other hand, the LOI from combustion fluctuates around 1.0 %. In addition, the removal rates of total organic carbon in the residues from all three thermochemical processes exceed 98.89 %. However, the potential ecological risks associated with heavy metals in the residues from thermochemical treatment of OS also increase to some extent. Cr, Cu, and Zn are found to evaporate and escape into liquid and gaseous products, while Pb is retained in the residues. Notably, the residue from combustion poses the highest environmental risks among the three processes. [Display omitted] ● Environmental impacts in pyrolysis, gasification and combustion of oily sludge were compared. ● Unsaturation degree of heavy components in liquid products were calculated. ● N-/S-/Cl-containing pollutants in flue gases at 550 °C and 950 °C were evolved. ● Heavy metals in solid residues from different thermochemical processes were evaluated. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Hazardous Materials is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
FullText Text:
  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 181114571
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Comparison of environmental impacts from pyrolysis, gasification, and combustion of oily sludge.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Yu%2C+Hongdi%22">Yu, Hongdi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lin%2C+Fawei%22">Lin, Fawei</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> linfawei@tju.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Guo%2C+Xuan%22">Guo, Xuan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Luan%2C+Chujun%22">Luan, Chujun</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Jiantao%22">Li, Jiantao</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> lijiantao@tcu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Li%2C+Rundong%22">Li, Rundong</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Che%2C+Lei%22">Che, Lei</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Tian%2C+Wangyang%22">Tian, Wangyang</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+Guanyi%22">Chen, Guanyi</searchLink><relatesTo>5</relatesTo> (AUTHOR)
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Journal+of+Hazardous+Materials%22">Journal of Hazardous Materials</searchLink>. Dec2024, Vol. 480, pN.PAG-N.PAG. 1p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Waste+recycling%22">Waste recycling</searchLink><br /><searchLink fieldCode="DE" term="%22Flue+gases%22">Flue gases</searchLink><br /><searchLink fieldCode="DE" term="%22Heavy+metals%22">Heavy metals</searchLink><br /><searchLink fieldCode="DE" term="%22Power+resources%22">Power resources</searchLink><br /><searchLink fieldCode="DE" term="%22Copper%22">Copper</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Thermochemical treatment of oily sludge (OS) has been demonstrated to be an effective approach for resource and energy recovery. However, the migration and emission of potential pollutants have limited its further development. In this study, the environmental impacts, including aromatic compounds in liquid products, N-, S-, and Cl-containing pollutants in gaseous products, and residual organic matter and heavy metals in solid residues, during the pyrolysis, gasification, and combustion processes of OS are comparatively investigated. The results indicate that the aromatics in the liquid products obtained from pyrolysis and gasification are primarily hydrocarbons with 10, 14, and 16 carbon atoms, and the corresponding degree of unsaturation is between 7 and 16. By contrast, the aromatics produced during combustion are mainly hydrocarbons with 10–12 carbon atoms and an unsaturation degree of 7. The liquid products from gasification of OS contain aromatics with more carbon atoms and a higher degree of unsaturation, suggesting potential issues of recalcitrant aromatics and tar by-products during the gasification process. The release behaviors of N-, S-, and Cl-containing pollutants during the thermochemical treatment of OS are closely related to the specific thermochemical technology and treatment temperature. At 550 °C, these pollutants are gradually released from the OS. By contrast, at 950 °C, they are released over a narrow temperature range with significantly higher concentrations. Furthermore, compared with the peak concentrations of SO 2 and HCl during thermochemical processing at 550 °C, these values increase by 1–2 orders of magnitude at 950 °C. With the increase in treatment temperature, the loss on ignition (LOI) of residues from pyrolysis or gasification of OS gradually decreases and stabilizes around 0.5 %. On the other hand, the LOI from combustion fluctuates around 1.0 %. In addition, the removal rates of total organic carbon in the residues from all three thermochemical processes exceed 98.89 %. However, the potential ecological risks associated with heavy metals in the residues from thermochemical treatment of OS also increase to some extent. Cr, Cu, and Zn are found to evaporate and escape into liquid and gaseous products, while Pb is retained in the residues. Notably, the residue from combustion poses the highest environmental risks among the three processes. [Display omitted] ● Environmental impacts in pyrolysis, gasification and combustion of oily sludge were compared. ● Unsaturation degree of heavy components in liquid products were calculated. ● N-/S-/Cl-containing pollutants in flue gases at 550 °C and 950 °C were evolved. ● Heavy metals in solid residues from different thermochemical processes were evaluated. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Hazardous Materials is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=181114571
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.jhazmat.2024.136014
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Waste recycling
        Type: general
      – SubjectFull: Flue gases
        Type: general
      – SubjectFull: Heavy metals
        Type: general
      – SubjectFull: Power resources
        Type: general
      – SubjectFull: Copper
        Type: general
    Titles:
      – TitleFull: Comparison of environmental impacts from pyrolysis, gasification, and combustion of oily sludge.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Yu, Hongdi
      – PersonEntity:
          Name:
            NameFull: Lin, Fawei
      – PersonEntity:
          Name:
            NameFull: Guo, Xuan
      – PersonEntity:
          Name:
            NameFull: Luan, Chujun
      – PersonEntity:
          Name:
            NameFull: Li, Jiantao
      – PersonEntity:
          Name:
            NameFull: Li, Rundong
      – PersonEntity:
          Name:
            NameFull: Che, Lei
      – PersonEntity:
          Name:
            NameFull: Tian, Wangyang
      – PersonEntity:
          Name:
            NameFull: Chen, Guanyi
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 05
              M: 12
              Text: Dec2024
              Type: published
              Y: 2024
          Identifiers:
            – Type: issn-print
              Value: 03043894
          Numbering:
            – Type: volume
              Value: 480
          Titles:
            – TitleFull: Journal of Hazardous Materials
              Type: main
ResultId 1