Degradation of Polycyclic Aromatic Hydrocarbons from Soil Leachate by Water Hyacinth (Eichhornia crassipes)

Ukiwe, Luke N.; Egereonu, U. U.; Njoku, Paul C; Nwoko, Chris O.

doi:10.5539/ijc.v4n5p55

Cited by 3 publications

(1 citation statement)

References 37 publications

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“…Glutaraldehyde as cross linker usually used to the biocatalyst at chitosan beads away from an immediate contact of the enzymes with the encompassing medium, it likewise makes the reagents to reach the catalytically active site of enzyme. More recently naphthalene was significantly adsorbed while pyrene was least adsorbed by water hyacinth (Eichhornia crassipes) [9]. Autor study hard.…”

Section: Introductionmentioning

confidence: 99%

Degradation of Anthracene by Immobilizing Laccase From Trametes Versicolor onto Chitosan Beads and Hyacinth Plant

Taha¹,

Hameed²,

Ali³

2020

MJS

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Polycyclic aromatic hydrocarbons (PAHs) are recognized as a toxic, mutagenic and/or carcinogenic compounds, and their pollution of soil and aquifer is of increasing environmentally risk. Laccases (E.C. 1.10.3.2) are phenoloxidases catalyze the oxidation of PAHs in the presence of a mediator compound and hyacinth plant. In this study laccase from Trametes versicolor was immobilized into chitosan, and the potential to oxidize anthracene in the presence of 1-hydroxybenzotriazole (HBT) was examined. Results indicated that the immobilization enhanced the stability of laccase against temperature, pH, inhibitors and loading time compared with the other cases. The immobilized laccase-mediator system was as efficient as the free enzyme for oxidizing the tested PAHs. After 24h. of incubation, immobilized laccase–HBT showed a system oxidization more than immobilized laccase without (HBT) of PAHs; Chitosan with hyacinth plant and (HBT) resulted better conversion than chitosan with or without HBT. These results indicate a new chance for applying the immobilized laccase in bioremediation.

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Section: Introductionmentioning

confidence: 99%

Degradation of Anthracene by Immobilizing Laccase From Trametes Versicolor onto Chitosan Beads and Hyacinth Plant

Taha¹,

Hameed²,

Ali³

2020

MJS

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Polycyclic Aromatic Hydrocarbon in Vegetables Grown on Contaminated Soils in a Sub-Saharan Tropical Environment – Lagos, Nigeria

Adetunde

Mills²,

Oluseyi

et al. 2018

Polycyclic Aromatic Compounds

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Diet has been established as a major source of exposure to PAHs for humans especially nonsmokers. Therefore their presence in plants constitutes a major health concern. This research aims to determinine the concentration and profile of sixteen US-EPA priority PAHs in tropical edible vegetables (Corchorus olitorius (Ewedu), Celosia argentea (Soko), Amaranthus cruentus L (Grain amaranthus/ Tete), Telfairia occidentale (Ugwu), Basella alba (Amunu tutu/White Spinash), Lactuca Sativa (Lettuce), Allium ascalonicum (Spring Onions/Alubasa elewe), Talinum Triangulare (Water leaf)), grown on potted contaminated soils. Vegetable grown on potted contaminated soils and contaminated soils were extracted using n-hexane/acetone mixture in ultrasonic bath. The extract was purified using a C18 solid-phase extraction cartridge (5 mL). The resultant extract was separated and the PAHs quantified on an Agilent 6890 Gas chromatography/mass spectrometer (GC/MS). Total PAH concentration in contaminated soils and plants grown on them were 200-250,000 ng g-1 and 100-5,000 ng g-1, respectively. Concentration of PAHs in plant roots was generally higher than in the stems. PAH concentration in plant stems was also generally higher than in plant leaves. Two and three ringed PAHs which are the less toxic were dominant in most of the plant parts. One of the vegetable samples Telfairia occidentale (Ugwu) consistently grew on all the soils samples which suggest it possess some potential for phyto remediation.

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Morphophysiological Adaptations of Aquatic Macrophytes in Wetland-Based Sewage Treatment Systems: Strategies for Resilience and Efficiency under Environmental Stress

Maranho,

Gomes

2024

Plants

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There is a common misconception that aquatic macrophytes face significant challenges in wetland-based sewage treatment systems. This study aims to correct this perception by focusing on the crucial morphophysiological adaptations of aquatic macrophytes that enable them to thrive in wetland-based sewage treatment systems, particularly under environmental stress. These adaptations are vital for improving the efficiency and resilience of wastewater treatment processes, offering sustainable solutions in the face of variable environmental conditions and complex contaminant mixtures. The review emphasizes the role of macrophytes as natural engineers, capable of enhancing pollutant removal and system stability through their unique structural and functional traits. By understanding these adaptations, the review aims to guide the optimization of wetland design and management, ultimately contributing to more sustainable and effective wastewater treatment practices. The findings underscore the importance of species selection and the integration of nature-based solutions in environmental management, advocating for policies that support the use of macrophytes in modern wastewater management.

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Degradation of Polycyclic Aromatic Hydrocarbons from Soil Leachate by Water Hyacinth (Eichhornia crassipes)

Cited by 3 publications

References 37 publications

Degradation of Anthracene by Immobilizing Laccase From Trametes Versicolor onto Chitosan Beads and Hyacinth Plant

Degradation of Anthracene by Immobilizing Laccase From Trametes Versicolor onto Chitosan Beads and Hyacinth Plant

Polycyclic Aromatic Hydrocarbon in Vegetables Grown on Contaminated Soils in a Sub-Saharan Tropical Environment – Lagos, Nigeria

Morphophysiological Adaptations of Aquatic Macrophytes in Wetland-Based Sewage Treatment Systems: Strategies for Resilience and Efficiency under Environmental Stress

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