Magnetic nanomaterials-based photocatalyst for wastewater treatment

Upadhyay, Prachi; Moholkar, Vijayanand S.; Chakma, Sankar

doi:10.1016/b978-0-12-821496-1.00008-8

Cited by 2 publications

(1 citation statement)

References 139 publications

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“…The magnetic core of the materials (for single SPIONs or their agglomerates [114,115]) allows them to be easily separated from the treated water using a magnet arrangement, making the process efficient and the particles reusable. In this sense, several authors [116][117][118][119] have collectively discussed and highlighted the use of iron oxides (Fe 3 O 4 and γ-Fe 2 O 3 ) as the magnetic component in titanium-based photocatalysts. Overall, these nanocomposites have been able to achieve a high photocatalytic efficiency in the removal of dyes from water media under ultraviolet (UV) light exposure [19].…”

Section: Environmental Remediationmentioning

confidence: 99%

SPIONs Magnetophoresis and Separation via Permanent Magnets: Biomedical and Environmental Applications

Wu,

Ciannella,

Choe

et al. 2023

Processes

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Superparamagnetic iron oxide nanoparticles (SPIONs) have emerged as cutting-edge materials, garnering increasing attention in recent years within the fields of chemical and biomedical engineering. This increasing interest is primarily attributed to the distinctive chemical and physical properties of SPIONs. Progress in nanotechnology and particle synthesis methodologies has facilitated the fabrication of SPIONs with precise control over parameters such as composition, size, shape, stability, and magnetic response. Notably, these functionalized materials exhibit a remarkable surface-area-to-volume ratio, biocompatibility, and, most importantly, they can be effectively manipulated using external magnetic fields. Due to these exceptional properties, SPIONs have found widespread utility in the medical field for targeted drug delivery and cell separation, as well as in the chemical engineering field, particularly in wastewater treatment. Magnetic separation techniques driven by magnetophoresis have proven to be highly efficient, encompassing both high-gradient magnetic separation (HGMS) and low-gradient magnetic separation (LGMS). This review aims to provide an in-depth exploration of magnetic field gradient separation techniques, alongside a comprehensive discussion of the applications of SPIONs in the context of drug delivery, cell separation, and environmental remediation.

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Section: Environmental Remediationmentioning

confidence: 99%

SPIONs Magnetophoresis and Separation via Permanent Magnets: Biomedical and Environmental Applications

Wu,

Ciannella,

Choe

et al. 2023

Processes

View full text Add to dashboard Cite

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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

Ngulube,

Abdelhaleem,

Osman

et al. 2024

Environ Sci Pollut Res

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

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Magnetic nanomaterials-based photocatalyst for wastewater treatment

Cited by 2 publications

References 139 publications

SPIONs Magnetophoresis and Separation via Permanent Magnets: Biomedical and Environmental Applications

SPIONs Magnetophoresis and Separation via Permanent Magnets: Biomedical and Environmental Applications

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

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