Use of Nanotechnology for the Bioremediation of Contaminants: A Review

Processes, Год журнала: 2020, Номер 8(7), С. 826 - 826

Опубликована: Июль 13, 2020

Contaminants, organic or inorganic, represent a threat for the environment and human health in recent years their presence persistence has increased rapidly. For this reason, several technologies including bioremediation combination with nanotechnology have been explored to identify more systemic approaches removal from environmental matrices. Understanding interaction between contaminant, microorganism, nanomaterials (NMs) is of crucial importance since positive negative effects may be produced. example, some are stimulants microorganisms, while others toxic. Thus, proper selection paramount importance. The main objective review was analyze principles assisted by nanomaterials, nanoparticles (NPs) included, It also analyzed response living organisms employed remediate contaminants nanomaterials. Besides, we discuss international regulatory frame applicable these how they might contribute sustainability.

Язык: Английский

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Wastewater—Sources, Toxicity, and Their Consequences to Human Health

Elsevier eBooks, Год журнала: 2021, Номер unknown, С. 3 - 33

Опубликована: Янв. 1, 2021

Язык: Английский

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The application of photoelectrocatalysis in the degradation of rhodamine B in aqueous solutions: a review

RSC Advances, Год журнала: 2022, Номер 12(40), С. 26176 - 26191

Опубликована: Янв. 1, 2022

The pollution of the water environment by industrial effluents is an ongoing challenge due to rate industrialisation and globalisation. Photoelectrocatalysis (PEC), electrochemical advanced oxidation process, has proven be effective method for removing organics from wastewater. environmentally benign, cost-effective easy operate. In this present review, we examine recent progress in removal rhodamine B dye, a common constituent textile effluent released into environment, through photoelectrocatalytic degradation. We detailed discussion on use different kinds unmodified modified photoanodes that have been explored dye. More importantly, discussions are presented mechanisms kinetics degradation dye using these photoanodes. Hence, review will beneficial researchers developing future projects area wastewater treatments photoelectrocatalysis.

Язык: Английский

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Antibiotic Pollution of Planktonic Ecosystems: A Review Focused on Community Analysis and the Causal Chain Linking Individual- and Community-Level Responses

Environmental Science & Technology, Год журнала: 2023, Номер 57(3), С. 1199 - 1213

Опубликована: Янв. 11, 2023

Antibiotic pollution has become one of the most challenging environmental issues in aquatic ecosystems, with adverse effects on planktonic organisms that occupy base food chain. However, research regarding this topic not been systematically reviewed, especially terms community-level responses. In review, we provide an overview current antibiotic environments worldwide. Then, summarize recent studies concerning responses communities to antibiotics, ranging from individual- Studies have shown extremely high concentrations antibiotics can directly harm growth and survival plankton; however, such are rarely found natural freshwater. It is more likely environmentally relevant will affect physiological, morphological, behavioral characteristics organisms; influence interspecific interactions among plankton species via asymmetrical traits; thus alter structure function entire ecosystem. This review highlights importance community analysis revealing toxicity. We also encourage establishment causal relationships between impacts at multiple scales future for predicting consequences based currently available individual-level evidence.

Язык: Английский

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Water physicochemical factors and oxidative stress physiology in fish, a review

Frontiers in Environmental Science, Год журнала: 2023, Номер 11

Опубликована: Сен. 15, 2023

Fish are among the best-studied aquatic animals due to their economic and ecological values. meat is most affordable protein source for economically weaker section of people. The environment almost all ecosystems has a specific influential role on or by fishes. Therefore, studying stress biology, especially oxidative stress, vital because it can influence growth, production, reproduction, etc. To review above topic, peer-reviewed electronic databases, including Web Science, science direct, PubMed, Google Scholar, Scopus, AGRICOLA, were searched with keywords associated fish, diseases, abiotic such as effects water dissolved oxygen, temperature, salinity, hardness, alkalinity, pH, pollutants, heavy metals, anthropogenic activities, was reviewed in current article draw conclusion updated relation that exists between fish physiology, disease, stressors. Oxidative redox regulatory levels under parameters anti-stress responses differ various models. Undoubtedly, factors modulate health status greater extent, therefore, these must be considered priority basis improve general immunity fish. statement remains valid both saline freshwater habitats.

Язык: Английский

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Spatio-temporal distribution of microplastics in water and sediment samples of the Plankenburg river, Western Cape, South Africa

Environmental Pollution, Год журнала: 2023, Номер 323, С. 121303 - 121303

Опубликована: Фев. 15, 2023

Microplastic (MPs) pollution has become a subject of environmental concern due to its wide ubiquity in the environment. Microplastics are possible sources other hazardous chemicals aquatic organisms their composition and sorption properties. In this study, MPs occurrence water sediment samples Plankenburg River, Western Cape, South Africa was investigated. The physicochemical characterization river done onsite. 30 L were collected filtered 10 triplicates through 250 μm mesh onsite using metal bucket. An additional 12 sample 4 20 laboratory. extraction from laboratory by density separation. Sediment also at selected sites, oven-dried microplastics Sampling conducted over four seasons - spring, summer, autumn, winter. classified visual observation Fourier Transform Infrared Spectroscopy (FTIR-ATR). seasonal distribution surface varied across all sites. However, spring had highest (5.13 ± 6.62 MP/L) least, autumn (1.52 2.54 MP/L). observed (1587.50 599.32 MP/kg). Fibres most dominant microplastic particle type (shape), with size range 500-1000 different infrared spectroscopic analysis confirmed polymer be polyethylene. This study provides an understanding River system gives baseline for future monitoring assessment African freshwater systems.

Язык: Английский

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Fluorescence Probe for Detection of Malathion Using Sulfur Quantum Dots@Graphitic‐Carbon Nitride Nanocomposite

Luminescence, Год журнала: 2025, Номер 40(2)

Опубликована: Янв. 31, 2025

ABSTRACT A novel fluorescence‐based sensor has been developed for the sensitive detection of malathion, an organophosphorus pesticide, using sulfur‐doped quantum dots (SQDs) embedded within graphitic carbon nitride (g‐C₃N₄) nanosheets. The SQDs were synthesized through a hydrothermal method, whereas g‐C₃N₄ nanosheets produced via exfoliation process. resulting SQDs@g‐C₃N₄ nanocomposite demonstrated outstanding performance malathion in food samples, exhibiting wide linear range 10–120 μM and exceptionally low limit 0.02 μM. This sensitivity allows accurate rapid pesticide monitoring at trace levels. sensor's was optimized by varying experimental conditions, ensuring that it provided high sensitivity, excellent stability, impressive selectivity toward even complex matrices.

Язык: Английский

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Coupling cathodic electro-fenton with anodic photo-electrochemical oxidation: A feasibility study on the mineralization of paracetamol

Journal of environmental chemical engineering, Год журнала: 2020, Номер 8(5), С. 104394 - 104394

Опубликована: Авг. 24, 2020

Язык: Английский

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Accumulation and risk assessment of heavy metals employing species sensitivity distributions in Linggi River, Negeri Sembilan, Malaysia

Ecotoxicology and Environmental Safety, Год журнала: 2021, Номер 211, С. 111905 - 111905

Опубликована: Янв. 14, 2021

The constant increase of heavy metals into the aqueous environment has become a contemporary global issue concern to government authorities and public. study assesses concentration, distribution, risk assessment in freshwater from Linggi River, Negeri Sembilan, Malaysia. Species sensitivity distribution (SSD) was utilised calculate cumulative probability toxicity metals. aquatic organism's data obtained ECOTOXicology knowledgebase (ECOTOX) used estimate predictive non-effects concentration (PNEC). decreasing sequence hazardous (HC5) manganese > aluminium copper lead arsenic cadmium nickel zinc selenium, respectively. highest metal iron with mean value 45.77 μg L–1, followed by (14.41 L–1) (11.72 L–1). pollution index (HPI) this is 11.52, implying low-level pollutions River. quotient (RQ) approaches were applied assess potential RQ shows medium (RQm = 0.1125) 0.1262); low 0.0122) 0.0687); negligible 0.0085), 0.0054), 0.0016) selenium 0.0012). output produces comprehensive risk, thus provides insights for legislators regarding exposure management mitigation.

Язык: Английский

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Bioaccumulation, Biodistribution, Toxicology and Biomonitoring of Organofluorine Compounds in Aquatic Organisms

International Journal of Molecular Sciences, Год журнала: 2021, Номер 22(12), С. 6276 - 6276

Опубликована: Июнь 11, 2021

This review is a survey of recent advances in studies concerning the impact poly- and perfluorinated organic compounds aquatic organisms. After brief introduction on (PFCs) features, an overview monitoring reported illustrating ranges recorded concentrations water, sediments, species. Besides presenting general concepts defining bioaccumulative potential its indicators, biodistribution PFCs described taking consideration different tissues/organs investigated species as well differences between wild or under controlled laboratory conditions. The use bioindicators for biomonitoring are discussed data summarized table reporting number monitored their total concentration function Moreover, biomolecular effects taxonomically illustrated. In final paragraph, main findings have been possible solutions to environmental threats posed by environment discussed.

Язык: Английский

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