Pesticide removal from industrial effluents using biopolymeric materials

Sánchez, Laura M.; Primiano, Romina P. Ollier; Pereira, Anderson do Espírito Santo; Fraceto, Leonardo Fernandes; Álvarez, Vera A.

doi:10.1016/b978-0-12-818134-8.00015-8

Cited by 7 publications

(6 citation statements)

References 71 publications

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“…The protonation of these amine groups may lead to the electrostatic attraction of anionic compounds, such as anionic dyes [ 57 ] and halogens [ 58 ]. Moreover, the existence of these free –NH 2 and −OH active groups allows the adsorption of other pollutants, such as, phenol [ 59 , 60 ], antibiotics [ 61 , 62 ] and pesticides [ 63 ]. Hence, the chitosan adsorption capacity depends on its crystallinity, affinity to water, and deacetylation percentage [ 64 ].…”

Section: Chitosanmentioning

confidence: 99%

Recent Developments in Chitosan-Based Adsorbents for the Removal of Pollutants from Aqueous Environments

et al. 2021

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The quality of water is continuously under threat as increasing concentrations of pollutants escape into the aquatic environment. However, these issues can be alleviated by adsorbing pollutants onto adsorbents. Chitosan and its composites are attracting considerable interest as environmentally acceptable adsorbents and have the potential to remove many of these contaminants. In this review the development of chitosan-based adsorbents is described and discussed. Following a short introduction to the extraction of chitin from seafood wastes, followed by its conversion to chitosan, the properties of chitosan are described. Then, the emerging chitosan/carbon-based materials, including magnetic chitosan and chitosan combined with graphene oxide, carbon nanotubes, biochar, and activated carbon and also chitosan-silica composites are introduced. The applications of these materials in the removal of various heavy metal ions, including Cr(VI), Pb(II), Cd(II), Cu(II), and different cationic and anionic dyes, phenol and other organic molecules, such as antibiotics, are reviewed, compared and discussed. Adsorption isotherms and adsorption kinetics are then highlighted and followed by details on the mechanisms of adsorption and the role of the chitosan and the carbon or silica supports. Based on the reviewed papers, it is clear, that while some challenges remain, chitosan-based materials are emerging as promising adsorbents.

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Section: Chitosanmentioning

confidence: 99%

Recent Developments in Chitosan-Based Adsorbents for the Removal of Pollutants from Aqueous Environments

et al. 2021

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“…Gum Arabic has previously been used to interact with pesticides 31 and is known to attract an analyte in close proximity to the surface of the GA related nanoparticles. For this reason, Gum Arabic polymer layers helped to provide stable SERS signal and facilitated 2,4-D detection using Raman spectroscopy.…”

Section: Sers Detection Of 24-d Pesticide Initial Raman Detectionmentioning

confidence: 99%

“…[29][30] It has been used to act as a biopolymer for removal of pesticides in polluted water bodies. [31][32] Gum Arabic has been used for green chemical synthesis of silver nano particles. [33][34][35] During this process, Gum Arabic acts as a reducing agent to reduce silver ions, then Gum Arabic forms a complex with Ag atoms, subsequently forming Ag-GA NPs.…”

mentioning

confidence: 99%

Highly Sensitive Pesticide Detection using Electrochemically Prepared Silver-Gum Arabic Nanocluster-based SERS Substrates

Yang

O’Riordan

Lovera

2021

Preprint

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Surface Enhanced Raman is a promising analytical method for harmful pesticides detection. Herein, we demonstrate a rapid method to directly monitor 2,4-D pesticide in water without the need of sample pre-treatment by using Silver-Gum Arabic (Ag-GA) electrochemically co-deposited SERS substrates. The facile electrochemical synthesis of the large-area (40 µm x 20 µm) SERS substrates needs only 10 seconds, with 2 μL AgNO3 and Gum Arabic mixed solution. Different mor-phologies including Ag-GA spherical nanoparticles and nano dendrites were synthesized by tuning the deposition parame-ters. This study therefore offers a novel way to fabricate SERS substrates for rapid determination of 2,4-D pesticides down to 1 pM in deionized water and 0.15 nM in commercial bottled and also river water samples

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“…Furthermore, pesticides can have adverse effects on human health, particularly when used inappropriately or with prolonged exposure [1][2][3]. All these negative effects have challenged the scientific world to find solutions to control and detect their presence in groundwater, surface water sources, and drinking water and, thus, to manage as much as possible the safety and sustainability of pesticide use [4][5][6][7]. Consequently, several analytical methods have been developed and applied to monitor pesticide residues in food and environmental samples, including electrochemical techniques [8] and liquid and gas chromatography coupled with mass spectrometry [9,10].…”

Section: Introductionmentioning

confidence: 99%

Self-Assembled Chitosan/Dialdehyde Carboxymethyl Cellulose Hydrogels: Preparation and Application in the Removal of Complex Fungicide Formulations from Aqueous Media

Ghiorghita,

Lazar,

Ghimici

et al. 2023

Polymers

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Environmental contamination with pesticides occurs at a global scale as a result of prolonged usage and, therefore, their removal by low-cost and environmentally friendly systems is actively demanded. In this context, our study was directed to investigate the feasibility of using some self-assembled hydrogels, comprising chitosan (CS) and carboxymethylcellulose (CMC) or dialdehyde (DA)-CMC, for the removal of four complex fungicide formulations, namely Melody Compact (MC), Dithane (Dt), Curzate Manox (CM), and Cabrio®Top (CT). Porous CS/CMC and CS/DA-CMC hydrogels were prepared as discs by combining the semi-dissolution acidification sol-gel transition method with a freeze-drying approach. The obtained CS/CMC and CS/DA-CMC hydrogels were characterized by gel fraction yield, FTIR, SEM, swelling kinetics, and uniaxial compression tests. The batch-sorption studies indicated that the fungicides’ removal efficiency (RE%) by the CS/CMC hydrogels was increased significantly with increasing sorbent doses reaching 94%, 93%, 66% and 48% for MC, Dt, CM and CT, respectively, at 0.2 g sorbent dose. The RE values were higher for the hydrogels prepared using DA-CMC than for those prepared using non-oxidized CMC when initial fungicide concentrations of 300 mg/L or 400 mg/L were used. Our results indicated that CS/DA-CMC hydrogels could be promising biosorbents for mitigating pesticide contamination of aqueous environments.

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Pesticide removal from industrial effluents using biopolymeric materials

Cited by 7 publications

References 71 publications

Recent Developments in Chitosan-Based Adsorbents for the Removal of Pollutants from Aqueous Environments

Recent Developments in Chitosan-Based Adsorbents for the Removal of Pollutants from Aqueous Environments

Highly Sensitive Pesticide Detection using Electrochemically Prepared Silver-Gum Arabic Nanocluster-based SERS Substrates

Self-Assembled Chitosan/Dialdehyde Carboxymethyl Cellulose Hydrogels: Preparation and Application in the Removal of Complex Fungicide Formulations from Aqueous Media

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