Evaluation of thermodynamic properties of sorption of 2,4-D and atrazine by tire rubber granules

Alam, Jahrul M; Dikshit, Anil Kumar; Bandyopadhayay, M.

doi:10.1016/j.seppur.2004.06.006

Cited by 37 publications

(23 citation statements)

References 12 publications

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“…The resulting pesticide pollution of the water becomes a great threat to the aquatic ecosystem (Alam et al, 2005;Gupta et al, 2002). Malathion is an insecticide with a neurotoxin action that causes insect death by inhibiting the acetylcholinesterase enzyme (Kwong, 2002).…”

Section: Introductionmentioning

confidence: 99%

Protective effects of vitamin C against biochemical toxicity induced by malathion pesticides in male albino rat

Ismail¹

2013

J. Evol. Biol. Res.

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Malathion is a chemical pesticide, commonly used by Egyptian farmers; however, its contamination of water sources has become an important issue. It is suggested that the role of vitamin C in alteration of enzymes responsible for energy metabolism was induced by administration of Malathion. The effect of malathion and malathion with vitamin C on some enzymes in the rat were recorded in the present study. Significant increases in the level of hepatic enzymes (alanine aminotransferase, aspartate aminotransferase, alkaline phosphatase, and gamma glutamyl transpeptidase) were recorded. Furthermore, renal markers such as urea, cholesterol and creatinine were increased in rats treated with malathion. Additionally, serum triglyceride was significantly decreased. No significant changes were observed in total protein, albumin and bilirubin in all treated groups as compared to the control. The present results showed that a significant (p < 0.001) decrease in glycolytic enzymes (hexokinase, pyruvatekinase, glucose phosphate isomerase and phosphofructokinase) were observed in treated groups, and lactate dehydrogenase enzyme activity also showed significant (p < 0.01) reduction. Coadministration of vitamin C to the groups restored all the parameters cited above to near-normal values. Therefore, the present investigation revealed that vitamin C appeared to be a promising agent for protection against malathion-induced toxicity.

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Section: Introductionmentioning

confidence: 99%

Protective effects of vitamin C against biochemical toxicity induced by malathion pesticides in male albino rat

Ismail¹

2013

J. Evol. Biol. Res.

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“…As a result, the equilibrium lies less to the adsorption process. The negative values of ∆S o indicate that the adsorption complexes of the herbicide formed on all six soil samples were stabilization, Association, fixation or immobilization of the pesticides molecules as a result of adsorption decreased the degree of freedom, causing negative entropy effect (Hundal & Pasricha, 1994;Alam et al, 2005). The changes in the standard entropy (∆S o ) of adsorption suggest a formation of ion-ion and hydrophobic interactions in the higher spacing, resulting in the decrease in the standard entropy (Jana.T.…”

Section: Equilibrium Constantmentioning

confidence: 99%

Thermodynamic Adsorption-desorption of Metolachlor and 2,4-D on Agricultural Soils

Shariff¹

2011

IJC

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To investigate the thermodynamics parameters for adsorption-desorption behavior of metolachlor (nonionic herbicides) and 2,4-D (anionic herbicides) on the selected soils by using a kinetic approach. The objective of this study to investigate the rate constants and other kinetic parameters for the adsorption-desorption behavior and to elucidate the effect of temperature, the experiments were done at 10, 25, 40 ±1 ℃. Data from the experiments revealed that the adsorption-desorption of metolachlor and 2,4-D on the selected soil samples followed the first order rate law, and revealed that adsorption of metolachlor and 2,4-D was spontaneous exothermic, a partly physical and partly chemical in nature to some extent. Values of adsorption rate constant k a were in the range 0.853 -2.263 and 0.765 -2.399 for metolachlor and 2,4-D respectively, desorption rate constant k d were in the range 0.744 -1.303 and 0.705 -1.289 for metolachlor and 2,4-D respectively. By using the Arrhenius equation the activation energy of each adsorption-desorption of both pesticides were calculated. The activation energy E a for adsorption processes followed the range 14.667 -17.361 kJ·mol , and -16.292 to -61.292 J·mol -1 ·K -1 for metolachlor and 2,4-D respectively.

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“…Also, adsorption process is one of the most promising techniques for pesticide removal due to flexibility in design and operation. Batch and/or column experiments have been undertaken to study adsorption characteristics of some pesticides such as (2,4-dichlorophenoxy) propionic acid (dichlorprop), (4-chloro-2-methylphenoxy) propanoic acid (mecoprop) (27), 2,4-dichlorophenol (DCP), 2-methyl-4-chlorophenol (MCP) (27,28), atrazine (29), carbofuran (30), and 2,4-D (21,27,(29)(30)(31)(32)(33). Choosing of a suitable adsorbent for pesticide removal is a complex problem because of the wide variety of their chemical structures.…”

Section: Introductionmentioning

confidence: 99%

Removal of 2, 4-Dichlorophenoxyacetic Acid (2, 4-D) From Aqueous Environments Using Single-Walled Carbon Nanotubes

et al. 2013

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Background: 2, 4-Dichlorophenoxyacetic acid (2, 4-D) is a widely used herbicide known to be moderately toxic. Extensive use and poor biodegradability of 2, 4-D has resulted in its ubiquitous presence in the environment, and has led to contamination of surface and ground waters. Objectives: At present study, single-walled carbon nanotubes (SWCNTs) were used for the sorption of 2, 4-D from aqueous solutions. Materials and Methods: The effect of various operating parameters such as initial concentration of 2, 4-D, contact time, adsorbent dosage, and pH were investigated. Equilibrium isotherms were used to identify the possible mechanism of the adsorption process. Results: Maximum adsorption capacity of the SWCNTs was 979.6 mg/g at pH5, contact time 45 min, initial concentration of 5000 µg/L, and 23 ± 2 •C temperatures, when 97.96% of 2, 4-D herbicide were removed. The adsorption equilibriums were analyzed by Langmuir and Freundlich isotherm models. It was found that the data fitted to Langmuir (R2 = 0.9987) better than Freundlich (R2 = 0.9727) model. Conclusions: According to achieved results, it was defined that SWCNTs is a quite effective adsorbent in removal of 2, 4-D from aqueous environments.

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Evaluation of thermodynamic properties of sorption of 2,4-D and atrazine by tire rubber granules

Cited by 37 publications

References 12 publications

Protective effects of vitamin C against biochemical toxicity induced by malathion pesticides in male albino rat

Protective effects of vitamin C against biochemical toxicity induced by malathion pesticides in male albino rat

Thermodynamic Adsorption-desorption of Metolachlor and 2,4-D on Agricultural Soils

Removal of 2, 4-Dichlorophenoxyacetic Acid (2, 4-D) From Aqueous Environments Using Single-Walled Carbon Nanotubes

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