Microplastic sources, formation, toxicity and remediation: a review

Environmental Chemistry Letters, Год журнала: 2023, Номер 21(4), С. 2129 - 2169

Опубликована: Апрель 4, 2023

Abstract Microplastic pollution is becoming a major issue for human health due to the recent discovery of microplastics in most ecosystems. Here, we review sources, formation, occurrence, toxicity and remediation methods microplastics. We distinguish ocean-based land-based sources Microplastics have been found biological samples such as faeces, sputum, saliva, blood placenta. Cancer, intestinal, pulmonary, cardiovascular, infectious inflammatory diseases are induced or mediated by exposure during pregnancy maternal period also discussed. Remediation include coagulation, membrane bioreactors, sand filtration, adsorption, photocatalytic degradation, electrocoagulation magnetic separation. Control strategies comprise reducing plastic usage, behavioural change, using biodegradable plastics. Global production has risen dramatically over past 70 years reach 359 million tonnes. China world's top producer, contributing 17.5% global production, while Turkey generates waste Mediterranean region, at 144 tonnes per day. 75% marine waste, with responsible 80–90% pollution, account only 10–20%. induce toxic effects on humans animals, cytotoxicity, immune response, oxidative stress, barrier attributes, genotoxicity, even minimal dosages 10 μg/mL. Ingestion animals results alterations gastrointestinal tract physiology, system depression, differential gene expression, growth inhibition. Furthermore, bioaccumulation tissues aquatic organisms can adverse ecosystem, potential transmission birds. Changing individual behaviours governmental actions, implementing bans, taxes, pricing carrier bags, significantly reduced consumption 8–85% various countries worldwide. The microplastic minimisation approach follows an upside-down pyramid, starting prevention, followed reducing, reusing, recycling, recovering, ending disposal least preferable option.

Язык: Английский

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Synthesis of green nanoparticles for energy, biomedical, environmental, agricultural, and food applications: A review

Environmental Chemistry Letters, Год журнала: 2024, Номер 22(2), С. 841 - 887

Опубликована: Янв. 20, 2024

Язык: Английский

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Methods to prepare biosorbents and magnetic sorbents for water treatment: a review

Environmental Chemistry Letters, Год журнала: 2023, Номер 21(4), С. 2337 - 2398

Опубликована: Май 4, 2023

Access to drinkable water is becoming more and challenging due worldwide pollution the cost of treatments. Water wastewater treatment by adsorption on solid materials usually cheap effective in removing contaminants, yet classical adsorbents are not sustainable because they derived from fossil fuels, can induce secondary pollution. Therefore, biological sorbents made modern biomass increasingly studied as promising alternatives. Indeed, such biosorbents utilize waste that would otherwise pollute systems, promote circular economy. Here we review biosorbents, magnetic sorbents, other cost-effective with emphasis preparation methods, types, mechanisms, regeneration spent adsorbents. Biosorbents prepared a wide range materials, including wood, bacteria, algae, herbaceous agricultural waste, animal waste. Commonly removed contaminants comprise dyes, heavy metals, radionuclides, pharmaceuticals, personal care products. Preparation methods include coprecipitation, thermal decomposition, microwave irradiation, chemical reduction, micro-emulsion, arc discharge. Adsorbents be classified into activated carbon, biochar, lignocellulosic clays, zeolites, peat, humic soils. We detail isotherms kinetics. Regeneration supercritical fluid desorption. also discuss exhausted adsorbent management disposal. found agro-waste remove up 68–100% while wooden, herbaceous, bacterial, marine-based 55–99% metals. Animal waste-based 1–99% The average removal efficiency modified around 90–95%, but some treatments, cross-linked beads, may negatively affect their efficiency.

Язык: Английский

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Fabricating of Fe₃O₄@Ag-MOF nanocomposite and evaluating its adsorption activity for removal of doxorubicin

Journal of Environmental Science and Health Part A, Год журнала: 2022, Номер 57(13-14), С. 1099 - 1115

Опубликована: Дек. 6, 2022

The purpose of this research was to investigate the doxorubicin (DOX) adsorption behavior on Fe3O4@Ag-Metal Organic Framework (Fe3O4@Ag-MOF). This adsorbent effectively prepared using a simple synthetic process. Many instruments, including FTIR, XRD, SEM, TEM, and XPS, were used characterized new Fe3O4@Ag-MOF. Additionally, presented Fe3O4@Ag-surface MOF's area shown be 586.06 m2/g with size around 43 nm. composite that made has magnetic properties quite strong (63.3 emu/g). produced Fe3O4@Ag-MOF discovered have fantastic ability adsorb anti-cancer drug DOX, 1.72 mmol/g (934.85 mg/g) capacity. On basis changes in temperature, pH, DOX concentration, mechanism investigated. capacity for greater at pH 7.0, according experimental data. equilibrium also demonstrated Langmuir regulated best fit extracted data compared other models. activation energy onto determined, indicating chemisorption kinetics well-known kinetic model pseudo-second-order. thermodynamic measurements documented enthalpy (ΔH°), entropy(ΔS°), Gibbs free (ΔG°) parameters reaction endothermic spontaneous thermodynamic. from real water samples (tap water, effluent wastewater, influence wastewater) It's interesting had great recyclability 72.6 percent fifth cycle it highly recyclable. After adsorption, typical XRD peak intensities locations mostly unchanged throughout indicates crystalline phase remained steady. results indicated good candidate adsorbing treating wastewater.

Язык: Английский

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From plastic waste pyrolysis to Fuel: Impact of process parameters and material selection on hydrogen production

Fuel, Год журнала: 2023, Номер 344, С. 128107 - 128107

Опубликована: Март 24, 2023

Hydrogen is an energy carrier that can be utilized in various applications, including power plants, the synthesis of high-value products, and clean transportation fuels without emissions. Hence, hydrogen a potential candidate replace fossil reduce environmental pollution. The high demand for plastics driving production rate to increase yearly, leading great accumulation plastic waste materials resulting severe burden on environment. Thermo-catalytic conversion other promising route efficiently provide ideal long-term solution necessary overcome this challenge. Developing durable high-efficiency catalysts immerge from wastes industrial scale still challenge researchers. This study comprehensively summarizes discusses recently published literature using different thermo-catalytic processes, pyrolysis, pyrolysis-air gasification, pyrolysis-steam reforming, pyrolysis- (CO2) dry pyrolysis-plasma catalysis. scope review focus influence supports, method yield hydrogen, impact several crucial reaction parameters like pyrolysis temperature, catalytic catalyst plastic, steam ratios inclusive as well. conclusions will extremely valuable researchers interested sustainable generation H2 materials.

Язык: Английский

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Valorization of agriculture wastes as biosorbents for adsorption of emerging pollutants: Modification, remediation and industry application

Results in Engineering, Год журнала: 2023, Номер 17, С. 100960 - 100960

Опубликована: Фев. 11, 2023

The scarcity of clean water resources combined with other environmental and anthropogenic effects have urged the development advanced technology for wastewater treatment. Adsorption attracts great attention as a cost-effective technique remediation contaminated water. Despite broad variety adsorbents existing in literature, agriculture waste-derived biosorbents appear to hold greatest promise adsorption emerging contaminants. Herein, this review introduces recent developments field. role green chemistry principle their contribution towards Sustainable Development Goals (SDGs) are discussed. Different types modifications including activation modification magnetic, non-magnetic nanoparticles polymers systematically reviewed. Besides, application modified heavy metals, dyes, PAHs oils along respective mechanisms analyzed. Apart from this, potential practical is canvassed through introducing simultaneous pollutants, usage real industrial matrix reusability performance. Finally, recommendations future studies presented. This anticipated critically explore economical candidates pollutants.

Язык: Английский

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Assessing the environmental footprint of recycled plastic pellets: A life-cycle assessment perspective

Environmental Technology & Innovation, Год журнала: 2023, Номер 32, С. 103289 - 103289

Опубликована: Июль 17, 2023

Plastic production has significant environmental impacts, including water pollution, global warming, resource depletion, and microplastic pollution. To address this, it is crucial to reduce plastic find more sustainable alternatives. While recycling waste can help mitigate requires careful assessment. This study evaluates the impact of producing polymer pellets from recycled polyolefin-based using life-cycle assessment with Gabi software. Xylene used as a solvent later recovered. Two scenarios different xylene recovery levels are assessed. The results show that 100% consumes energy but reduces carbon footprint. Additionally, emissions during pellet 22.6%, other impacts in range 11%–40% lower compared virgin polypropylene PP. use solar photovoltaic electricity demonstrates potential reducing overall except for human toxicity. found be 41.8% than emphasizes importance techniques mitigating effects offers insights policymakers stakeholders interested circular economy.

Язык: Английский

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Highly efficient micropollutant decomposition by ultrathin amorphous cobalt-iron oxide nanosheets in peroxymonosulfate-mediated membrane-confined catalysis

Chemical Engineering Journal, Год журнала: 2024, Номер 485, С. 149352 - 149352

Опубликована: Фев. 14, 2024

Язык: Английский

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Advancing sustainable water treatment strategies: harnessing magnetite-based photocatalysts and techno-economic analysis for enhanced wastewater management in the context of SDGs

Environmental Science and Pollution Research, Год журнала: 2024, Номер unknown

Опубликована: Март 12, 2024

Herein, we explore the holistic integration of magnetite-based photocatalysts and techno-economic analysis (TEA) as a sustainable approach in wastewater treatment aligned with Sustainable Development Goals (SDGs). While considerable attention has been devoted to photocatalytic dye degradation, nexus between these processes considerations remains relatively unexplored. The review comprehensively examines fundamental characteristics photocatalysts, encompassing synthesis methods, composition, unique properties. It investigates their efficacy addressing homogeneous heterogeneous aspects while discussing strategies optimize photodegradation efficiency, including curbing electron-hole recombination mitigating scavenging effects interference by ions humic acid. Moreover, management are examined, focusing on reusability regeneration post-dye removal, along potential for reusing treated relevant industrial applications. From perspective, study evaluates financial feasibility deploying treatment, correlating reduced pollution marketing water social, economic, environmental objectives. By advocating TEA, this paper contributes insights into scalable profitable practices. underscores alignment practices SDGs, emphasizing comprehensive managing ways that meet environmental, societal

Язык: Английский

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Preparation of magnetic adsorbent and its adsorption removal of pollutants: An overview

TrAC Trends in Analytical Chemistry, Год журнала: 2023, Номер 167, С. 117241 - 117241

Опубликована: Авг. 19, 2023

Язык: Английский

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