High dye removal capacity of Peniophora laxitexta immobilized in a combined support based on polyurethane foam and lignocellulosic substrates. Issue 5 (23rd February 2022)
- Record Type:
- Journal Article
- Title:
- High dye removal capacity of Peniophora laxitexta immobilized in a combined support based on polyurethane foam and lignocellulosic substrates. Issue 5 (23rd February 2022)
- Main Title:
- High dye removal capacity of Peniophora laxitexta immobilized in a combined support based on polyurethane foam and lignocellulosic substrates
- Authors:
- Majul, Leonardo
Wirth, Sonia
Levin, Laura - Abstract:
- ABSTRACT: Dye removal from effluents is a major problem for most textile industries. At present, wastewater treatments are currently based on physico-chemical methods which are expensive, energy inefficient and of limited versatility. The aim of this work was to find a low-cost and efficient method for dye removal. To do this, we designed a combined system based on the immobilization of the ligninolytic white-rot fungus Peniophora laxitexta (BAFC 4687) on mixed supports consisting of two polyurethane foam discs and a middle layer of diverse lignocellulosic substrates: soybean hulls, wheat straw or cellulose spent casings. As a corticioid fungus, P. laxitexta was able to completely colonize the supports developing a compact and tight structure that maintained the integrity of the system after several dye removal cycles. The immobilized fungus removed between 30% and 50% of the azoic dye Xylidine and more than 50% of the anthraquinonic dye RBBR in three successive cycles, and near 90% of the triphenylmethane Malachite Green in 10 repeated cycles without any loss of efficiency. Our analysis showed that the removal of the dyes was due to the combined effect of adsorption to the supports and enzymatic decolorization by soluble laccases and enzymes associated with the mycelium. Additionally, we showed that the presence of Malachite Green induced the expression of a new laccase isoform with high decolorization capacity. Based on these results, we propose that this inoculatedABSTRACT: Dye removal from effluents is a major problem for most textile industries. At present, wastewater treatments are currently based on physico-chemical methods which are expensive, energy inefficient and of limited versatility. The aim of this work was to find a low-cost and efficient method for dye removal. To do this, we designed a combined system based on the immobilization of the ligninolytic white-rot fungus Peniophora laxitexta (BAFC 4687) on mixed supports consisting of two polyurethane foam discs and a middle layer of diverse lignocellulosic substrates: soybean hulls, wheat straw or cellulose spent casings. As a corticioid fungus, P. laxitexta was able to completely colonize the supports developing a compact and tight structure that maintained the integrity of the system after several dye removal cycles. The immobilized fungus removed between 30% and 50% of the azoic dye Xylidine and more than 50% of the anthraquinonic dye RBBR in three successive cycles, and near 90% of the triphenylmethane Malachite Green in 10 repeated cycles without any loss of efficiency. Our analysis showed that the removal of the dyes was due to the combined effect of adsorption to the supports and enzymatic decolorization by soluble laccases and enzymes associated with the mycelium. Additionally, we showed that the presence of Malachite Green induced the expression of a new laccase isoform with high decolorization capacity. Based on these results, we propose that this inoculated laminar biocarrier could be effectively used for dye removal in textile wastewater. GRAPHICAL ABSTRACT: UF0001 … (more)
- Is Part Of:
- Environmental technology. Volume 43:Issue 5(2022)
- Journal:
- Environmental technology
- Issue:
- Volume 43:Issue 5(2022)
- Issue Display:
- Volume 43, Issue 5 (2022)
- Year:
- 2022
- Volume:
- 43
- Issue:
- 5
- Issue Sort Value:
- 2022-0043-0005-0000
- Page Start:
- 684
- Page End:
- 695
- Publication Date:
- 2022-02-23
- Subjects:
- Dye removal -- immobilized fungi -- laccase -- Peniophora laxitexta -- mixed support
Environmental engineering -- Periodicals
Environmental protection -- Periodicals
628.05 - Journal URLs:
- http://www.tandfonline.com/toc/tent20/current ↗
http://www.tandfonline.com/ ↗ - DOI:
- 10.1080/09593330.2020.1801851 ↗
- Languages:
- English
- ISSNs:
- 0959-3330
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - 3791.698800
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British Library HMNTS - ELD Digital store - Ingest File:
- 20732.xml