Biodegradation of e-waste microplastics by Penicillium brevicompactum

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 935, P. 173334 - 173334

Published: May 17, 2024

Electronic and electric waste (e-waste) management strategies often fall short in dealing with the plastic constituents of printed circuit boards (PCB). Some materials from PCB, such as epoxy resins, may release contaminants, but neither potential environmental impact has been assessed nor mitigation have put forward. This study biodegradation microplastics (1-2 mm size) PCB by fungus Penicillium brevicompactum over 28 days, thus contributing to discussion for decreasing plastics environment. The capacity P. induce microplastic fragmentation degradation determined increased number smaller-sized particles mass reduction (up 75 % within 14 days), respectively. occurrence chain scission oxidation exposed when compared control conditions (which occurred only after days exposure) can be observed. Furthermore, Attenuated Total Reflectance-Fourier Transform Infrared (ATR-FTIR) spectroscopy performed dried biomass evidence an increase absorption intensities regions that could attributed functional groups associated carbohydrates. results underline role genus Penicillium, particularly brevicompactum, providing basis further exploration its e-waste bioremediation research on underlying mechanisms sustainable approaches mitigate pollution.

Language: Английский

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Microbes in water treatment process

Elsevier eBooks, Journal Year: 2025, Volume and Issue: unknown, P. 255 - 277

Published: Jan. 1, 2025

Language: Английский

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Transcriptomic analysis of polyaromatic hydrocarbon degradation by the halophilic fungus Aspergillus sydowii at hypersaline conditions

Environmental Microbiology, Journal Year: 2020, Volume and Issue: 23(7), P. 3435 - 3459

Published: July 15, 2020

Summary Polycyclic aromatic hydrocarbons (PAHs) are among the most persistent xenobiotic compounds, with high toxicity effects. Mycoremediation halophilic Aspergillus sydowii was used for their removal from a hypersaline medium (1 M NaCl). A. metabolized PAHs as sole carbon sources, resulting in of up to 90% both [benzo [ ] pyrene (BaP) and phenanthrene (Phe)] after 10 days. Elimination Phe BaP almost exclusively due biotransformation not adsorption by dead mycelium did correlate activity lignin modifying enzymes (LME). Transcriptomes grown on PAHs, or glucose control, at conditions, revealed 170 upregulated 76 downregulated genes. Upregulated genes were related starvation, cell wall remodelling, degradation metabolism xenobiotics, DNA/RNA metabolism, energy generation, signalling general stress responses. Changes LME expression levels detected, while chloroperoxidase gene, possibly detoxification processes fungi, strongly upregulated. We propose that two parallel metabolic pathways (mitochondrial cytosolic) involved intracellular oxidation PAHs. To best our knowledge, this is comprehensive transcriptomic analysis fungal

Language: Английский

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A Critical Review on the Ubiquitous Role of Filamentous Fungi in Pollution Mitigation

Current Pollution Reports, Journal Year: 2020, Volume and Issue: 6(4), P. 295 - 309

Published: July 20, 2020

Abstract Propose of Review Anthropogenic activities are saturating wastewater treatment plants and the environment with an increasing range organic inorganic compounds, impairing ecosystems health. Filamentous fungi, characteristic filamentous growth, array extracellular intracellular enzymes, production surfactants, cell wall biosorption properties, symbiotic momentum, can contribute to a paradigm shift on perception anthropogenic pollution. This review provides critical analysis main bottlenecks for feasible fungus-including processes proposes holistic approach pollution mitigation using fungi. Recent Findings fungi convert ordinary sidestreams into, e.g., feed proteins biofuels. Economic environmental studies support integration in established processes. Intersectoral initiatives, economic studies, need be motivated increase Although massively studied, transfer fungal removal micropollutants into real matrices is difficult. It needs supported by omics technologies study microbial networks, efficient analytical techniques clarify detoxification potential. The area benefit from knowledge growth sidestreams, studies. Summary interest corroborated overwhelming amount research; however, no full-scale applications currently known. Environmental reality micropollutant-rich wastewaters continuous. establishment collaboration among governmental authorities, industries, academics order tackle gaps within propose approach.

Language: Английский

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Hydrocarbon Degradation and Enzyme Activities of Aspergillus oryzae and Mucor irregularis Isolated from Nigerian Crude Oil-Polluted Sites

Microorganisms, Journal Year: 2020, Volume and Issue: 8(12), P. 1912 - 1912

Published: Nov. 30, 2020

Many free-living saprobic fungi are nature recruited organisms for the degradation of wastes, ranging from lignocellulose biomass to organic/inorganic chemicals, aided by their production enzymes. In this study, fungal strains were isolated contaminated crude-oil fields in Nigeria. The dominant selected each site and identified as Aspergillus oryzae Mucor irregularis based on morphological molecular characterization, with percentage incidences 56.67% 66.70%, respectively. Selected response/tolerance complex hydrocarbon (used engine oil) was studied growing them Bushnell Haas (BH) mineral agar supplemented at different concentrations, i.e., 5%, 10%, 15%, 20%, a control having dextrose. Hydrocarbon potentials these confirmed BH broth culture filtrates pre-supplemented 1% oil after 15 days incubation using GC/MS. addition, presence putative enzymes, laccase (Lac), manganese peroxidase (MnP), lignin (LiP) appropriate substrates. analyzed grew medium no other carbon source exhibited 39.40% 45.85% dose inhibition response (DIR) respectively 20% concentration. An enzyme activity test revealed that two produced more Lac than MnP LiP. It also observed through GC/MS analyses while A. acted all components used oil, M. only degraded long-chain hydrocarbons BTEX. This study confirms have potential be exploited bio-treatment removal polluted soils.

Language: Английский

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Application of constructed wetlands in the PAH remediation of surface water: A review

The Science of The Total Environment, Journal Year: 2021, Volume and Issue: 780, P. 146605 - 146605

Published: March 20, 2021

Language: Английский

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A critical review of oil spills in the Niger Delta aquatic environment: causes, impacts, and bioremediation assessment

Environmental Monitoring and Assessment, Journal Year: 2022, Volume and Issue: 194(11)

Published: Sept. 22, 2022

Language: Английский

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Novel strategies and advancement in reducing heavy metals from the contaminated environment

Archives of Microbiology, Journal Year: 2022, Volume and Issue: 204(8)

Published: July 13, 2022

Language: Английский

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Exploiting fungi in bioremediation for cleaning-up emerging pollutants in aquatic ecosystems

Marine Environmental Research, Journal Year: 2023, Volume and Issue: 190, P. 106068 - 106068

Published: June 25, 2023

Language: Английский

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Yarrowia lipolytica CMGB32 Biosurfactants Produced Using n-Hexadecane: Developing Strategies for Environmental Remediation

Applied Sciences, Journal Year: 2024, Volume and Issue: 14(7), P. 3048 - 3048

Published: April 4, 2024

The yeast Yarrowia lipolytica degrades petroleum compounds, including alkanes, via the monoterminal oxidation pathway, hydrophobic carbon substrate assimilation is mediated by biosurfactants, and extracellular amphiphilic molecules are produced cell. This study focuses on ability of strain Y. CMGB32 to degrade n-hexadecane producing biosurfactants with high potential for bioremediation. hydrocarbon-degrading was observed a 2,6-dichlorophenolindophenol (DCPIP) test in Bushnell–Hass medium 1% n-hexadecane, cell hydrophobicity expressed as microbial adhesion hydrocarbons (MATH). Biosurfactant production peptone (YP) estimated after 72 h using emulsification index (E24%) against toluene. Crude biosurfactant (cell-free broth) stability tests were performed at different temperatures (4 °C, 70 °C) NaCl concentrations (2–10%). effects synthetic wastewater remediation comprised growth curves (OD measurements) natural heavy metal degrader Rhodotorula mucilaginosa, determination nutrients (spectrophotometrically), physico-chemical parameters, removal capacity lead cadmium ions (via inductively coupled plasma mass spectrometry—ICP-MS). antimicrobial anti-adherence activities 20 mg/mL 40 pathogenic Candida krusei strains involved observations crystal violet microtiter method. DCPIP decolorization occurred six days, corresponding maximum phase culture. After h, cells presented (82.61% MATH) stable (E24% 47%). crude (5%) increased R. mucilaginosa cultivated cultures contaminated Pb2+ Cd2+, conductivity COD (86%) samples, determined (66%) Cd2+ (42%) reduction. concentrated inhibited C. (70%) biofilm adherence. In conclusion, shows important development biosurfactant-based technologies heavy-metal- emerging pathogen-contaminated wastewaters.

Language: Английский

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