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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Mine tailings-based geopolymers: A comprehensive review

Ceramics International, Journal Year: 2022, Volume and Issue: 48(17), P. 24192 - 24212

Published: May 30, 2022

Language: Английский

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A Comprehensive Review on Application of Different Natural and Chemically Modified Nanomaterials Adsorbents for Heavy Metals Removal

Journal of Inorganic and Organometallic Polymers and Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 25, 2025

Language: Английский

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Perspectives on green fabrication and sustainable utilization of adsorption materials for wastewater treatment

Process Safety and Environmental Protection, Journal Year: 2022, Volume and Issue: 187, P. 541 - 548

Published: Sept. 15, 2022

Language: Английский

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Facile and scalable synthesis of mesoporous composite materials from coal gasification fine slag for enhanced adsorption of malachite green

Journal of Cleaner Production, Journal Year: 2022, Volume and Issue: 379, P. 134739 - 134739

Published: Oct. 18, 2022

Language: Английский

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Study of adsorption and immobilization of Cs+, Sr2+, Co2+, Pb2+, La3+ ions on Na-Faujasite zeolite transformed in solid state matrices

Separation and Purification Technology, Journal Year: 2023, Volume and Issue: 332, P. 125662 - 125662

Published: Nov. 17, 2023

Language: Английский

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Lead, zinc, nickel and chromium ions removal from polluted waters using zeolite formed from bauxite, obsidian and their combination with red mud: Behaviour and mechanisms

Journal of Cleaner Production, Journal Year: 2023, Volume and Issue: 415, P. 137814 - 137814

Published: June 16, 2023

Synthetic zeolites obtained combining natural sources (bauxite and obsidian), pure alumina/silica reagents, waste material (red mud) were tested for heavy metals (i.e., Pb2+, Zn2+, Ni2+, Cr3+) removal. The adsorption capabilities of the formed sodalite, zeolite A X (LTA FAU topology, respectively), compared through thermodynamic kinetic experiments. Although all newly-formed able to remove pollutant elements within 24 h, Zeolite sodalite synthesized obsidian (natural as silica source) red mud (waste alumina proved be a better sorbent phase (qmax 20–25 mg g−1) from treated bauxite 4–18 g−1). Their removal efficiency was also evaluated in polluted waters (wastewater treatment plant [WWTP] effluent, mixture, native pH). Depending on type, mechanism accredited ion exchange precipitation mechanisms. location metal-ions inside channels defined by X-ray Powder Diffraction (XRPD) Rietveld analysis. Host–guest interactions among framework oxygen atoms, co-adsorbed water molecules, highlighted refined bond distances. Finally, magnetic characterization allowed recognize different properties function raw materials used synthesis.

Language: Английский

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Natural zeolites and zeolite composites for heavy metal removal from contaminated water and their applications in aquaculture Systems: A review

The Egyptian Journal of Aquatic Research, Journal Year: 2023, Volume and Issue: 49(4), P. 431 - 443

Published: Dec. 1, 2023

Natural zeolites and composites containing zeolites, with their distinctive physicochemical properties, show great promise have been applied across various industries, including agriculture, aquaculture, water wastewater treatment, air purification, petrochemicals. Recent years witnessed significant advancements in the use of these inorganic adsorbents. The growing environmental concerns related to heavy metal contamination sources underscore need for effective remediation strategies protect ecosystems human health. This review explores diverse applications natural zeolite context removing metals from polluted water. A special focus is also given structural attributes, composition, effectiveness composites. delves into extensive utilization, insights adsorption capabilities mechanisms influencing performance. In addition, highlights potential significance materials aquaculture systems, particularly role mitigating waterborne contaminants enhancing sustainability. By synthesizing current research findings, this offers a comprehensive perspective on multifaceted roles relevance practices.

Language: Английский

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Metakaolin-based geopolymer – Zeolite NaA composites as CO2 adsorbents

Applied Clay Science, Journal Year: 2023, Volume and Issue: 237, P. 106900 - 106900

Published: March 11, 2023

In this work, three metakaolin-based geopolymer matrices were prepared, varying the molar ratio Si:Al (2.0 or 1.2) and type of cation (sodium potassium). Starting from these matrices, geopolymer-zeolite composites synthesized consolidated (80 °C), incorporating a commercial sodium-based zeolite, Na4A, with aim producing post combustion CO2 adsorbents, since presence Na4A crystalline phase is desirable due to its known remarkable adsorption capacity. The matrix = 1.2 allowed in situ nucleation zeolite NaA, therefore was added different amount synthetic verify total conversion into view an alternative low-cost synthesis method obtain NaA as "solid" complex form. deeply characterized lastly tested for adsorption. act binders allowing shaping functional mutable chemical composition, microstructure porosity according starting composition. composite best performing term capacity being 1.0 mmol g−1 at 0.1 bar, nearly equivalent (1.2 g−1) close pure Na13X (1.4 g−1), current benchmark material carbon capture application.

Language: Английский

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Shapeable sodium alginate aerogel beads incorporated with L-cysteine-modified defective UiO-67 for heavy metal ions removal

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 475, P. 146289 - 146289

Published: Sept. 28, 2023

Language: Английский

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