Adsorption of Diuron from aqueous solution onto commercial organophilic clay: kinetic, equilibrium and thermodynamic study

Souza, Fernando Manzotti de; Santos, Onélia Aparecida Andreo dos

doi:10.1080/09593330.2018.1505967

Cited by 15 publications

(5 citation statements)

References 47 publications

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“…de Souza and dos Santos (2018) did not see any significant variation in the adsorption capacity as a function of pH in the range of 3–11. There was a decrease observed at a pH value of 12.…”

Section: Diuron Adsorptionmentioning

confidence: 90%

“…de Souza and dos Santos (2018) used commercial organophilic clays to observe the adsorption of diuron from an aqueous solution. Commercial organophilic clay showed great performance in the adsorption of diuron.…”

Section: Diuron Adsorptionmentioning

confidence: 99%

“…de Souza and dos Santos (2018) verified that more than one factor contributes to the adsorption rate of diuron and the phenomenon that contributes the most to the processing time is intraparticle diffusion. Even though the pseudo‐second‐order model was the best kinetic adjustment in all experimental conditions evaluated, it does not provide support for understanding the mechanisms and steps of mass transfer that may be controlling the adsorption phenomenon.…”

Section: Diuron Adsorptionmentioning

confidence: 99%

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A review on the adsorption of diuron, carbaryl, and alachlor using natural and activated clays

Isak

Xhaxhiu

2023

Remediation Journal

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Pesticides are considered predominant organic pollutants because they are widespread in many ecosystems. Pesticide residues can degrade chemically, physically, and biochemically in nature, but, because of their high stability and, in some cases, water solubility, they continue to persist in the environment. Pesticides have been eliminated from contaminated waters using a variety of methods that fall under the categories of biological, chemical, physical, and physicochemical remediation processes from various types of matrices, including water and soil. Due to their excellent qualities as adsorbents and pesticide transporters, the use of natural soil components such as clays, iron oxides, or humic acid has recently attracted growing interest. Clays have several advantages over other adsorbents, including large specific surface areas due to their small particle size, low cost, and widespread availability. Clay minerals have a great capacity for adsorption due to Coulombic forces and, attributable to their large surface area, van der Waals forces. This review describes historical, current, and emerging techniques and materials to remove the pesticides diuron, carbaryl, and alachlor using clays as adsorbents.

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Section: Diuron Adsorptionmentioning

confidence: 90%

Section: Diuron Adsorptionmentioning

confidence: 99%

Section: Diuron Adsorptionmentioning

confidence: 99%

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A review on the adsorption of diuron, carbaryl, and alachlor using natural and activated clays

Isak

Xhaxhiu

2023

Remediation Journal

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“…The positive value of ΔS (0.104 KJ/K.mol) represents the increase in randomness at the interphase of the solid solution during adsorption. The positive value of ∆H (31.80 kJ.mol-1) suggests that the process is endothermic, which means that the adsorption reaction consumes energy [23].…”

Section: Thermodynamic Study On Diuron Adsorption In Neutral Phmentioning

confidence: 99%

Temperature and pH influence on Diuron adsorption by Algerian Mont-Na Clay

Tlemsani

Taleb

Piraúlt-Roy

et al. 2022

International Journal of Environmental Analytical Chemistry

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The United States Environmental Protection Agency (EPA) classified the phenylurea herbicide Diuron (C9H10Cl2N2O) as possibly carcinogenic to humans. This research is focused on the adsorbent performances of an Algerian sodium Montmorillonite (Mont-Na), for the removal of Diuron in aqueous solutions. The material is characterized before and after processing using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), specific surface area (SBET) and thermal analysis (TGA/DTA). The tests were firstly performed at 25°C and pH = 6.3. Until 61 hours of experiment, no removal was obtained in this case. After that, the experiments were carried out on Mont-Na at high temperature and medium pH (T = 45°C, pH = 6.3) and then at ambient temperature and basic pH (T = 25°C, pH = 11). The removal was increased from 74% to 91%, respectively. The equilibrium is reached after 5 hours and the adsorption capacity is between 0.74 mg/g at 45°C and 0.91 mg/g at pH = 11. The kinetic modelling shows that the pseudo-first order describes the experimental data of the Diuron adsorption on Mont-Na and the equili brium data are modelled perfectly by applying the Elovich model. The thermodynamic quantities indicate that the adsorption process on Mont-Na at pH = 6.3 is spontaneous (ΔG < 0) and endothermic (ΔH = 31.80 kJ.mol −1 ). In conclusion, under the operating conditions used, local Mont-Na proved to be an excellent material for the adsorption of Diuron in aqueous solutions. That could be very promising for sewage treatment.

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“…Various technologies have emerged to remove DUR from the environment and reduce its harmful effects, including advanced physical adsorption, photocatalytic degradation, chemical degradation, and biological treatments (da Silva Teófilo et al, 2020;de Souza and Dos Santos, 2020;Park and Jhung, 2020;Silambarasan et al, 2020). However, previous studies have reported that the by-products of the abiotic transformation of this compound are more hazardous than the parent compound itself (Liu et al, 2018;Manonmani et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Emerging Strategies for the Bioremediation of the Phenylurea Herbicide Diuron

Zhang

Lin

et al. 2021

Front. Microbiol.

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Diuron (DUR) is a phenylurea herbicide widely used for the effective control of most annual and perennial weeds in farming areas. The extensive use of DUR has led to its widespread presence in soil, sediment, and aquatic environments, which poses a threat to non-target crops, animals, humans, and ecosystems. Therefore, the removal of DUR from contaminated environments has been a hot topic for researchers in recent decades. Bioremediation seldom leaves harmful intermediate metabolites and is emerging as the most effective and eco-friendly strategy for removing DUR from the environment. Microorganisms, such as bacteria, fungi, and actinomycetes, can use DUR as their sole source of carbon. Some of them have been isolated, including organisms from the bacterial genera Arthrobacter, Bacillus, Vagococcus, Burkholderia, Micrococcus, Stenotrophomonas, and Pseudomonas and fungal genera Aspergillus, Pycnoporus, Pluteus, Trametes, Neurospora, Cunninghamella, and Mortierella. A number of studies have investigated the toxicity and fate of DUR, its degradation pathways and metabolites, and DUR-degrading hydrolases and related genes. However, few reviews have focused on the microbial degradation and biochemical mechanisms of DUR. The common microbial degradation pathway for DUR is via transformation to 3,4-dichloroaniline, which is then metabolized through two different metabolic pathways: dehalogenation and hydroxylation, the products of which are further degraded via cooperative metabolism. Microbial degradation hydrolases, including PuhA, PuhB, LibA, HylA, Phh, Mhh, and LahB, provide new knowledge about the underlying pathways governing DUR metabolism. The present review summarizes the state-of-the-art knowledge regarding (1) the environmental occurrence and toxicity of DUR, (2) newly isolated and identified DUR-degrading microbes and their enzymes/genes, and (3) the bioremediation of DUR in soil and water environments. This review further updates the recent knowledge on bioremediation strategies with a focus on the metabolic pathways and molecular mechanisms involved in the bioremediation of DUR.

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Adsorption of Diuron from aqueous solution onto commercial organophilic clay: kinetic, equilibrium and thermodynamic study

Cited by 15 publications

References 47 publications

A review on the adsorption of diuron, carbaryl, and alachlor using natural and activated clays

A review on the adsorption of diuron, carbaryl, and alachlor using natural and activated clays

Temperature and pH influence on Diuron adsorption by Algerian Mont-Na Clay

Emerging Strategies for the Bioremediation of the Phenylurea Herbicide Diuron

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