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Degradation of Rhodamine B Wastewater Using Laccase-Immobilized Floating CN-Doped Copper Alginate Beads.

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Title: Degradation of Rhodamine B Wastewater Using Laccase-Immobilized Floating CN-Doped Copper Alginate Beads.
Authors: Zhou, Jiayao1 (AUTHOR) 1295861877@qq.com, Feng, Peng1 (AUTHOR) 1275970273@qq.com, Su, Peijia1 (AUTHOR) 3245844472@qq.com, Chen, Qiuyu2 (AUTHOR) 1230411074@stu.xaut.edu.cn, Liu, Xiaochen3 (AUTHOR) liuxiaochen@xpu.edu.cn, Tian, Fei3 (AUTHOR) tianfei@xpu.edu.cn, Wu, Zhansheng3 (AUTHOR) wuzhans@xpu.edu.cn
Source: Journal of Environmental Engineering. Apr2026, Vol. 152 Issue 4, p1-9. 9p.
Subjects: Rhodamine B, Laccase, Catalysts recycling, Enzyme stability, Photocatalysis, Wastewater treatment
Abstract: The environmental challenges posed by printing and dyeing wastewater are becoming increasingly severe. Rhodamine B (RhB), in particular, is a typical refractory pollutant due to its stable chemical structure and significant biotoxicity. To address the common issues in photoenzyme-coupled catalytic systems, such as difficulties in solid–liquid separation, low light utilization efficiency, and poor enzyme stability, this study developed an innovative floating spherical photoenzyme hybrid catalyst (SA-BT/CN-LC). Using copper alginate (SA) microspheres as a carrier, laccase (LC) and graphite-phase carbon nitride (CN) were coimmobilized via an embedding method, enabling efficient synergistic photoenzymatic degradation. Radical trapping experiments demonstrated a pronounced synergistic effect between photocatalysis and enzymatic catalysis within the confined microenvironment of the microspheres. The relative contributions of active species to RhB degradation were identified as h+>·O2−>·OH>e−. After immobilization, the optimal pH for LC activity shifted from 3.0 to 4.0, and the optimal temperature increased from 40°C to 50°C, markedly enhancing its environmental adaptability. Under optimized conditions, i.e., 10 mg/L initial RhB, 50°C, and pH 5.0, a high degradation rate of 93.2% was achieved. The catalyst exhibited excellent reusability and stability, retaining 73.84% degradation efficiency after six consecutive cycles, owing to its unique floating spherical structure, which facilitates recovery and reduces enzyme leakage. This study provides an effective strategy to overcome the limitations of conventional powdered catalysts and enzyme leaching in continuous wastewater treatment applications. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Environmental Engineering is the property of American Society of Civil Engineers 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
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Header DbId: egs
DbLabel: Engineering Source
An: 191606941
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Label: Title
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  Data: Degradation of Rhodamine B Wastewater Using Laccase-Immobilized Floating CN-Doped Copper Alginate Beads.
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  Data: <searchLink fieldCode="AR" term="%22Zhou%2C+Jiayao%22">Zhou, Jiayao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> 1295861877@qq.com</i><br /><searchLink fieldCode="AR" term="%22Feng%2C+Peng%22">Feng, Peng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> 1275970273@qq.com</i><br /><searchLink fieldCode="AR" term="%22Su%2C+Peijia%22">Su, Peijia</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> 3245844472@qq.com</i><br /><searchLink fieldCode="AR" term="%22Chen%2C+Qiuyu%22">Chen, Qiuyu</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> 1230411074@stu.xaut.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Liu%2C+Xiaochen%22">Liu, Xiaochen</searchLink><relatesTo>3</relatesTo> (AUTHOR)<i> liuxiaochen@xpu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Tian%2C+Fei%22">Tian, Fei</searchLink><relatesTo>3</relatesTo> (AUTHOR)<i> tianfei@xpu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Wu%2C+Zhansheng%22">Wu, Zhansheng</searchLink><relatesTo>3</relatesTo> (AUTHOR)<i> wuzhans@xpu.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Environmental+Engineering%22">Journal of Environmental Engineering</searchLink>. Apr2026, Vol. 152 Issue 4, p1-9. 9p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Rhodamine+B%22">Rhodamine B</searchLink><br /><searchLink fieldCode="DE" term="%22Laccase%22">Laccase</searchLink><br /><searchLink fieldCode="DE" term="%22Catalysts+recycling%22">Catalysts recycling</searchLink><br /><searchLink fieldCode="DE" term="%22Enzyme+stability%22">Enzyme stability</searchLink><br /><searchLink fieldCode="DE" term="%22Photocatalysis%22">Photocatalysis</searchLink><br /><searchLink fieldCode="DE" term="%22Wastewater+treatment%22">Wastewater treatment</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The environmental challenges posed by printing and dyeing wastewater are becoming increasingly severe. Rhodamine B (RhB), in particular, is a typical refractory pollutant due to its stable chemical structure and significant biotoxicity. To address the common issues in photoenzyme-coupled catalytic systems, such as difficulties in solid–liquid separation, low light utilization efficiency, and poor enzyme stability, this study developed an innovative floating spherical photoenzyme hybrid catalyst (SA-BT/CN-LC). Using copper alginate (SA) microspheres as a carrier, laccase (LC) and graphite-phase carbon nitride (CN) were coimmobilized via an embedding method, enabling efficient synergistic photoenzymatic degradation. Radical trapping experiments demonstrated a pronounced synergistic effect between photocatalysis and enzymatic catalysis within the confined microenvironment of the microspheres. The relative contributions of active species to RhB degradation were identified as h+>·O2−>·OH>e−. After immobilization, the optimal pH for LC activity shifted from 3.0 to 4.0, and the optimal temperature increased from 40°C to 50°C, markedly enhancing its environmental adaptability. Under optimized conditions, i.e., 10 mg/L initial RhB, 50°C, and pH 5.0, a high degradation rate of 93.2% was achieved. The catalyst exhibited excellent reusability and stability, retaining 73.84% degradation efficiency after six consecutive cycles, owing to its unique floating spherical structure, which facilitates recovery and reduces enzyme leakage. This study provides an effective strategy to overcome the limitations of conventional powdered catalysts and enzyme leaching in continuous wastewater treatment applications. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Environmental Engineering is the property of American Society of Civil Engineers 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.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1061/JOEEDU.EEENG-8500
    Languages:
      – Code: eng
        Text: English
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      Pagination:
        PageCount: 9
        StartPage: 1
    Subjects:
      – SubjectFull: Rhodamine B
        Type: general
      – SubjectFull: Laccase
        Type: general
      – SubjectFull: Catalysts recycling
        Type: general
      – SubjectFull: Enzyme stability
        Type: general
      – SubjectFull: Photocatalysis
        Type: general
      – SubjectFull: Wastewater treatment
        Type: general
    Titles:
      – TitleFull: Degradation of Rhodamine B Wastewater Using Laccase-Immobilized Floating CN-Doped Copper Alginate Beads.
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      – PersonEntity:
          Name:
            NameFull: Zhou, Jiayao
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            NameFull: Feng, Peng
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            NameFull: Su, Peijia
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            NameFull: Chen, Qiuyu
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            NameFull: Liu, Xiaochen
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            NameFull: Tian, Fei
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            NameFull: Wu, Zhansheng
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          Dates:
            – D: 01
              M: 04
              Text: Apr2026
              Type: published
              Y: 2026
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            – Type: issn-print
              Value: 07339372
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              Value: 152
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            – TitleFull: Journal of Environmental Engineering
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