IDEAS home Printed from https://ideas.repec.org/a/gam/jijerp/v19y2022i13p7983-d851622.html
   My bibliography  Save this article

Biodecolorization and Ecotoxicity Abatement of Disperse Dye-Production Wastewater Treatment with Pycnoporus Laccase

Author

Listed:
  • Bin Wang

    (School of Environmental Science and Engineering, Nanjing Tech University, Nanjing 211816, China)

  • Yanjun Chen

    (School of Environmental Science and Engineering, Nanjing Tech University, Nanjing 211816, China)

  • Jian Guan

    (School of Environmental Science and Engineering, Nanjing Tech University, Nanjing 211816, China)

  • Yiwen Ding

    (School of Environmental Science and Engineering, Nanjing Tech University, Nanjing 211816, China)

  • Yide He

    (School of Environmental Science and Engineering, Nanjing Tech University, Nanjing 211816, China)

  • Xueying Zhang

    (School of Environmental Science and Engineering, Nanjing Tech University, Nanjing 211816, China)

  • Nosir Shukurov

    (Institute of Geology and Geophysics, State Committee of the Republic of Uzbekistan on Geology and Mineral Resources 49, Olimlar Street, Tashkent 100041, Uzbekistan)

  • Luiz Fernando Romanholo Ferreira

    (Graduate Program in Process Engineering (PEP), Tiradentes University, Aracaju 49032-490, Brazil
    Waste and Effluent Treatment Laboratory, Institute of Technology and Research (ITP), Aracaju 49032-490, Brazil)

  • Jiayang Liu

    (School of Environmental Science and Engineering, Nanjing Tech University, Nanjing 211816, China)

  • Mingxin Zhu

    (School of Environmental Science and Engineering, Nanjing Tech University, Nanjing 211816, China)

Abstract

The biological treatment efficiency of dye wastewater using activated sludge (AS) is largely limited to the chromaticity and ecotoxicity of dyestuff. To alleviate this limitation, eleven industrial-grade disperse dyes were obtained from a fiber-dyeing factory, and for the first time, we studied the decolorization and detoxification effects of using the Pycnoporus laccase enzyme. Efficient decolorization was achieved with the following conditions: dye concentration 50 mg/L, 1-hydroxybenzotriazole (HBT) 0.15 mM, temperature 65 °C, pH 4, and laccase 0.33 U/mL. The decolorization rate of disperse dyes, ranging from 51 to 96% in this investigation, was highly dependent on the dye type, concentration, laccase loading, and HBT. The ecotoxicity of dyes was evaluated by studying the germination/growth of wheat seed as well as the respiratory rate of aerobic AS. Laccase treatment mitigated the phytotoxicity of dyes because of the higher wheat germination (e.g., increase of 38% for Black ECT 200%) and growth rate (e.g., increase of 91% for Blue 2BLN 200%). The reduced ecotoxicity of decolorized dye solution towards microorganisms was also confirmed by the finding that the oxygen uptake by aerobic AS was increased relative to that of the untreated samples (e.g., increase of 14 folds for Blue HGL 200%). In addition, the chemical oxygen demand (COD) of decolorized dye solution was slightly lower than that without decolorization during the respiratory test. The experimental results suggest that enzymatic decolorization and detoxification can be potentially used as a pretreatment method for disperse dye wastewater followed by AS treatment.

Suggested Citation

  • Bin Wang & Yanjun Chen & Jian Guan & Yiwen Ding & Yide He & Xueying Zhang & Nosir Shukurov & Luiz Fernando Romanholo Ferreira & Jiayang Liu & Mingxin Zhu, 2022. "Biodecolorization and Ecotoxicity Abatement of Disperse Dye-Production Wastewater Treatment with Pycnoporus Laccase," IJERPH, MDPI, vol. 19(13), pages 1-17, June.
  • Handle: RePEc:gam:jijerp:v:19:y:2022:i:13:p:7983-:d:851622
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1660-4601/19/13/7983/pdf
    Download Restriction: no

    File URL: https://www.mdpi.com/1660-4601/19/13/7983/
    Download Restriction: no
    ---><---

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jijerp:v:19:y:2022:i:13:p:7983-:d:851622. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.