Removal of pentachlorophenol pesticide from aqueous solutions using modified chitosan

Shankar, Aparajita; Kongot, Manasa; Saini, Vipin K.; Kumar, Amit

doi:10.1016/j.arabjc.2018.01.016

Cited by 75 publications

(22 citation statements)

References 36 publications

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“…The adsorption efficiency increased with adsorbent concentration up to 0.5 g. Thereafter, increasing adsorbent concentrations did not improve substantially the removal, and nearly 50% removal was reached for dosages between 0.5 and 1.5 g. Yet, the entrapment of a model pesticide was markedly improved, near to 98%, using a nanocomposite form of chitosan-AgO as adsorbent. In another contribution, the removal of pentachlorophenol, a common pesticide, from aqueous solutions, was assessed by comparing chitosan versus the modified chitosan: [chitosan-(2-hydroxy-1-naphthaldehyde)] (Shankar et al 2018). The effect of contact time on pesticide adsorption was studied, based on experiments in batch mode, under stirring, where 0.2 g of adsorbent was added to 200 mL of a synthetic solution containing the pesticide at 150 mg/L.…”

Section: Agricultural Wastewatermentioning

confidence: 99%

Chitosan for direct bioflocculation of wastewater

et al. 2019

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Coagulation/flocculation is a major phenomenon occurring during industrial and municipal water treatment to remove suspended particles. Common coagulants are metal salts, whereas flocculants are synthetic organic polymers. Those materials are appreciated for their high performance, low cost, ease of use, availability and efficiency. Nonetheless, their use has induced environmental health issues such as water pollution by metals and production of large amounts of sludges. As a consequence, alternative coagulants and flocculants, named biocoagulants and bioflocculants due to their biological origin and biodegradability, have been recently developed for water and wastewater treatment. In particular, chitosan and chitosan-based products have found applications as bioflocculants for the removal of particulate and dissolved pollutants by direct bioflocculation. Direct flocculation is done with water-soluble, ionic organic polymers without classical metalbased coagulants, thus limiting water pollution. Chitosan is a partially deacetylated polysaccharide obtained from chitin, a biopolymer extracted from shellfish sources. This polysaccharide exhibits a variety of physicochemical and functional properties resulting in numerous practical applications. Key findings show that chitosan removed more than 90% of solids and more than 95% of residual oil from palm oil mill effluents. Chitosan reduced efficiently the turbidity of agricultural wastewater and of seawater, below 0.4 NTU for the latter. 99% turbidity removal and 97% phosphate removal were observed over a wide pH range using 3-chloro-2-hydroxypropyl trimethylammonium chloride grafted onto carboxymethyl chitosan. Chitosan also removed 99% Microcystis aeruginosa cells and more than 50% of microcystins. Here, we review advantages and drawbacks of chitosan as bioflocculant. Then, we present examples in water and wastewater treatment, sludge dewatering and post-treatment of sanitary landfill leachate.

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Section: Agricultural Wastewatermentioning

confidence: 99%

Chitosan for direct bioflocculation of wastewater

et al. 2019

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“…The peak at 1601 cm -1 could be based on to the stretching of C-N vibration. The peak at 1651 cm -1 was due to C=O stretching (amide I) and at 1082 cm -1 show C-O stretching [3,[11][12][13]. The bands related to the C-O-C bridge are located at 1151 cm -1 (anti-symmetric stretching of C-O-C bridge), and 897 cm -1 (C-O-C stretching of the glycosidic linkage).…”

Section: Characterization Of the Prepared Materialsmentioning

confidence: 99%

“…The chitosan and hybrid composite of magnetite/chitosan have a better ability to remove 2,4-D in solution than bare IONPs, so the functional group on the surface of materials is supposed to be the main cause. The chitosan has a large amount of flexible group on the surface (amino and hydroxyl groups) [11,12] compared with the bare IONPs (have only the hydroxyl groups) [2]; and those amino groups are thought to play an important role in the adsorption mechanism by electrostatic attraction and cation-dipole attraction between the chitosan and 2,4-D molecule [7,11]. Besides, the chitosan and hybrid a)…”

Section: The Efficiency In Removing 24-d and Chrysoidinementioning

confidence: 99%

“…Chitosan is also non-toxic, hydrophilic, biocompatible, biodegradable and anti-bacterial, and can be considered as promising cost-effective adsorbents for the removal of hazardous anions in industrial wastewater [9]. Previous studies showed that chitosan acts as efficient adsorption to remove organic pollutants [10][11][12]. El Harmoudi et al, studied the adsorption of 2,4-dichlorophenoxyacetic acid (2,4-D) by using two biopolymers based on chitin/chitosan and demonstrated the adsorption ability of 2,4-D onto chitosan due to the interaction between the amino group of chitosan and the carboxyl group of 2,4-D [11].…”

Section: Introductionmentioning

confidence: 99%

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Hybrid Composite Based on Magnetite/ Chitosan for 2,4-D and Chrysoidine Removal

Han¹,

Cao²,

Popa³

et al. 2018

JST

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In this study, magnetite nanoparticles, chitosan, and a hybrid composite of magnetite/ chitosan were prepared through a simple method. The prepared materials were characterized via Fourier transform infrared spectroscopy, X-ray diffraction, Vibrating sample magnetometer, Laser diffraction particle size analyzer, and Zeta potential. Then, the adsorption capacity of these materials for 2,4-Dichlorophenoxyacetic acid (2,4-D) and chrysoidine removal were also determined in the same condition. Prepared materials have the ability to adsorb selectivity with 2,4-D and chrysoidine. There results show the potential application of hybrid composite magnetite/chitosan in developing efficient adsorbent in low cost in the field of environmental treatment.

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“…The adsorption studies were mainly focused on the development and application of new adsorbents, the most promising materials being the activated carbon [8] (used for the removal of a series of herbicides), carbon nanotubes [9] (used for the adsorption of fenuron pesticide) or natural polymers, such as cyclodextrin [10] or chitosan [11]. Another approach for the development of the nextgeneration adsorbents is represented by the core-shell nanostructures, having as main advantage the possibility to be applied in industrial application, as well as their facile removal, after their utilization, by applying an external magnetic field.…”

mentioning

confidence: 99%

Facile Removal of Pesticides from Aqueous Solutions Using Magnetic Nanocomposites I. Synthesis and characterization of the adsorbent material

Fierăscu¹,

Şomoghi²,

Nicolae³

et al. 2019

Rev.Chim.

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An inorganic/organic magnetic nanocomposite was synthesized and analytically characterized using X-ray fluorescence, X-ray diffraction, transmission electron microscopy and thermal analysis. The evaluation of the magnetic properties revealed that both the magnetite and the magnetite/chitosan nanocomposite are superparamagnetic with a paramagnetic component, having the saturation magnetization values of 48.04 emu/g, and 41.3 emu/g, respectively. The synthesized material is indented for the adsorption of two known commercial-available pesticides (active ingredients deltamethrin and thiamethoxam, respectively) from aqueous solutions.

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Removal of pentachlorophenol pesticide from aqueous solutions using modified chitosan

Cited by 75 publications

References 36 publications

Chitosan for direct bioflocculation of wastewater

Chitosan for direct bioflocculation of wastewater

Hybrid Composite Based on Magnetite/ Chitosan for 2,4-D and Chrysoidine Removal

Facile Removal of Pesticides from Aqueous Solutions Using Magnetic Nanocomposites I. Synthesis and characterization of the adsorbent material

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