Challenges and future directions in the analysis of emerging pollutants in aqueous environments

Tavengwa, Nikita Tawanda; Moyo, Babra; Musarurwa, Herbert; Dalu, Tatenda

doi:10.1016/b978-0-12-822850-0.00016-8

Cited by 5 publications

(1 citation statement)

References 17 publications

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“…Antibiotics in the environment are emerging pollutants that can spread antibiotic resistance, which poses a severe public health concern [1][2][3]. Various studies have confirmed many medicinal substances in several environmental compartments: surface waters, soil, sediment and groundwater [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Towards efficient ciprofloxacin adsorption using magnetic hybrid nanoparticles prepared with κ-, ι-, and λ-carrageenan

et al. 2022

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The efficient removal of the antibiotic ciprofloxacin (CIP) from aqueous samples using magnetic nanosorbents prepared using three sulfated polysaccharides, κ-, ι-and λ-carrageenan and an alkoxysilane agent containing a reactive epoxide ring is described. The prepared nanosorbents were characterized in detail using FTIR spectroscopy, solid-state 29 Si and 13 C NMR spectroscopy and elemental microanalysis. The synthesis method was more effective for incorporating higher amounts of κ-carrageenan in the siliceous shells. Although being less sulfated, κ-carrageenan is cheaper than the other carrageenan tested. The CIP adsorption was a cooperative process, well described by the Dubinin-Radushkevich isotherm, with maximum adsorption capacities of 878, 969 and 865 mg/g for κ-, ι-and λ-carrageenan sorbents, respectively. Overall, the produced magnetic nanosorbents are among the best magnetic systems with high adsorptive efficiency for CIP. It is suggested that protonated CIP molecules are exchanged with ester sulfate counterions of carrageenan at the particles' surface as the main pathway for CIP adsorption. The adsorption process was exothermic and entropically favorable for the three sorbents. However, at 298 K, the adsorption was spontaneous for κ-carrageenan-based sorbents and non-spontaneous for ι-and λ-carrageenan particles. The magnetic sorbents could be reused and maintained their ability towards CIP removal up to four cycles. The removal efficiency in wastewater was enhanced with the sorbent dose.

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Section: Introductionmentioning

confidence: 99%

Towards efficient ciprofloxacin adsorption using magnetic hybrid nanoparticles prepared with κ-, ι-, and λ-carrageenan

et al. 2022

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Emerging Pollutants from Urbanization and Industrialization in the Global South

Hait,

Kashyap,

Bhardwaj

2024

Biomonitoring of Pollutants in the Global South

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Fabrication of CuO derived reduced graphene oxide photocatalyst for strategic decolorization of congo red from aqueous environment

Basit,

Jamali,

Junjeo

et al. 2023

Preprint

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Environmental pollution poses a significant challenge to human health, ecosystems, and the planet's sustainability. Widespread contamination of air, water, and soil from various pollutants requires effective and sustainable solutions to reduce or eliminate pollution and its impacts. In this research work, we designed novel reduced graphene oxide functionalized copper oxide (rGO-CuO) nanocomposite material through simple method. The synthesized novel rGO-CuO nanocomposite material was characterized by using various advance tools such as XRD, SEM and EDX that revealed the information about the crystalline nature, phase purity, morphological features and elemental composition. The characterized techniques confirm the successful synthesis of novel composite material. Furthermore, the synthesized material was exploited for decolorization of CR dye in aqueous environment through optimized different experimental condition such as concentration of NaBH4, sun light effect and catalytic dosage. At minimum catalyst dose of 2.4 mg in only 5 minutes the prepared catalyst exhibited 98.7% degradation of CR dye from aqueous environment. Furthermore, the exceptional reusable profile of catalyst up to 5th cycle highlights the reliability of rGO-CuO photocatalyst. The decolorization performance of rGO-CuO photocatalyst suggests that the prepared catalyst could be an effective aspirant for the degradation of other synthetic dye at commercial level.

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Challenges and future directions in the analysis of emerging pollutants in aqueous environments

Cited by 5 publications

References 17 publications

Towards efficient ciprofloxacin adsorption using magnetic hybrid nanoparticles prepared with κ-, ι-, and λ-carrageenan

Towards efficient ciprofloxacin adsorption using magnetic hybrid nanoparticles prepared with κ-, ι-, and λ-carrageenan

Emerging Pollutants from Urbanization and Industrialization in the Global South

Fabrication of CuO derived reduced graphene oxide photocatalyst for strategic decolorization of congo red from aqueous environment

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