Heavy metal pollution in the aquatic environment: efficient and low-cost removal approaches to eliminate their toxicity: a review

RSC Advances, Journal Year: 2023, Volume and Issue: 13(26), P. 17595 - 17610

Published: Jan. 1, 2023

Heavy metal contamination of water sources has emerged as a major global environmental concern, threatening both aquatic ecosystems and human health. pollution in the environment is on rise due to industrialization, climate change, urbanization. Sources include mining waste, landfill leachates, municipal industrial wastewater, urban runoff, natural phenomena such volcanic eruptions, weathering, rock abrasion. ions are toxic, potentially carcinogenic, can bioaccumulate biological systems. metals cause harm various organs, including neurological system, liver, lungs, kidneys, stomach, skin, reproductive systems, even at low exposure levels. Efforts find efficient methods remove heavy from wastewater have increased recent years. Although some approaches effectively contaminants, their high preparation usage costs may limit practical applications. Many review articles been published toxicity treatment for removing wastewater. This focuses main pollution, chemical transformation, toxicological impacts environment, harmful effects ecosystem. It also examines advances cost-effective techniques physicochemical adsorption using biochar zeolite ion exchangers, well decomposition complexes through advanced oxidation processes (AOPs). Finally, advantages, applications, future potential these discussed, along with any challenges limitations that must be considered.

Language: Английский

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A critical review on electrospun membranes containing 2D materials for seawater desalination

Desalination, Journal Year: 2023, Volume and Issue: 555, P. 116528 - 116528

Published: March 8, 2023

Language: Английский

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Azithromycin decomposition from simple and complex waters by H2O2 activation over a recyclable catalyst of clay modified with nanofiltration process brine

Environmental Technology & Innovation, Journal Year: 2024, Volume and Issue: 33, P. 103512 - 103512

Published: Jan. 2, 2024

In the current research, brine of desalination units on Persian Gulf coast was used to improve catalytic properties clay. The catalyst degrade azithromycin through H2O2 activation. construction optimized by considering furnace retention time (60, 120, 180, 240 min), calcination temperature (200, 300, 400, 500 °C), and ratio brine-to- distilled water (100:0, 50:50, 25:75, 0:100%v/v). crystalline mesoporous had an area 11.52 m2/g. maximum decontamination (96.50%) achieved at pH 5.0, dose 5 g/L, hydrogen peroxide quantity 2%v/v, contact 60 min. Azithromycin decomposition kinetics using system followed first-order model (R² >0.96). Based study scavengers, hydroxyl radicals played a vital role in process. good stability seventh cycle reuse, it efficiency 54%. Phosphate anion aluminum cation more interference effects removal. removal presence humic acid fulvic decreased reached 80.25 83.59%, respectively. from environments like water, municipal tap sewage, urine tested, lowest sewage. this work could be effectively applied for activation and, eventually, antibiotic degradation many mediums.

Language: Английский

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Band engineering of BiOBr based materials for photocatalytic wastewater treatment via advanced oxidation processes (AOPs) – A review

Water Resources and Industry, Journal Year: 2023, Volume and Issue: 29, P. 100211 - 100211

Published: April 25, 2023

Semiconductor based photocatalysts have been an efficient technology for water and wastewater remediation, addressing the concepts of green chemistry sustainable development. Owing to narrow suitable band structure, BiOBr is a promising candidate treatment via photocatalysis. Enhancement photocatalytic properties can be obtained by various techniques like doping, element rich strategy, facet engineering, defect control. This review primarily focuses on engineering single BiOBr, its binary, ternary composites their applications in degradation hazardous pollutants wastewater. Moreover, current challenges future perspectives were discussed along with concluding comments.

Language: Английский

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Adsorptive removal of heavy metals from wastewater using emerging nanostructured materials: A state-of-the-art review

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 343, P. 127018 - 127018

Published: March 11, 2024

Language: Английский

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MXenes-based adsorbents for environmental remediation

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 342, P. 126982 - 126982

Published: March 4, 2024

Language: Английский

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From classic to cutting-edge solutions: A comprehensive review of materials and methods for heavy metal removal from water environments

Desalination and Water Treatment, Journal Year: 2024, Volume and Issue: 319, P. 100446 - 100446

Published: May 31, 2024

Waterborne heavy metals pose significant threats to both the environment and public health, causing neurological damage, developmental disorders, organ cancer. It is essential address contamination of various water bodies by these hazardous substances due their persistent nature lack biodegradability. This review thoroughly explores traditional modern strategies utilized remedy sources contaminated with evaluates effectiveness potential scalability each method. A literature survey reveals several effective for removing from water: adsorption, flotation, ion exchange, chemical precipitation, membrane-based filtration, coagulation, flocculation, phytoremediation, electrochemical methods. In our examination, we discussed agents/adsorbents used, efficiency removal technique, operating conditions, intrinsic advantages disadvantages approach. Summarizing key findings, noted a focus on adsorption techniques; however, challenges include selectively diverse ions, prolonged retention times, cycling stability. While membrane methods are practical, issues like large-volume sludge formation exist. Although electrical-based appear promising, solutions needed industrial-scale separation as well. Prioritizing real wastewater samples in studies crucial. Future research should emphasize eco-friendly, cost-effective

Language: Английский

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Strategically engineering advanced nanomaterials for heavy-metal remediation from wastewater

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 518, P. 216079 - 216079

Published: July 15, 2024

Language: Английский

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Effective assessment of biopolymer-based multifunctional sorbents for the remediation of environmentally hazardous contaminants from aqueous solutions

Chemosphere, Journal Year: 2023, Volume and Issue: 329, P. 138552 - 138552

Published: March 30, 2023

Language: Английский

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Recent trends in synthesis of 2D MXene-based materials for sustainable environmental applications

Emergent Materials, Journal Year: 2023, Volume and Issue: 7(1), P. 35 - 62

Published: Nov. 27, 2023

Abstract The unique properties of two-dimensional (2D) materials have piqued the interest technical community. Titanium carbide (MXene) is a member rapidly expanding family 2D with exceptional physiochemical characteristics and wide range uses in environmental field. MXene has long been topic applications, including wastewater treatment, electromagnetic interference (EMI) shielding, photocatalysis, hydrogen evolution reactions (HER) due to its high conductivity, varied band gap, hydrophilic nature, structural stability. This study covers important developments discusses how design, synthetic methods, stability changed over time. In this review paper, we discussed strategy synthesizing conventional, affordable heterojunctions Schottky junctions, as well development, mechanisms, trends deterioration organic contaminants, HER, EMI Shielding. We also explore obstacles restrictions that prevent scientific community from producing practical regulated structures for applications analyzing present usage. hazardous-environmental aspects MXene-based problems future possibilities these are examined emphasized. paper focused on such heavy metal detection removal, generation using MXenes. issues related wastewater, interference, clean energy production very persistent environment, better material required address challenges. Thus, kind could be alternative issues, hence, becomes important, which can pave way development issues. Graphical abstract

Language: Английский

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