Adsorption of Pesticide (Captan) onto Super Paramagnetic Poly (Styrene-co-acrylic acid) Hydrogel from Aqueous Solution using Batch and Column Studies

Tiwari, Alka; Bind, Anita

doi:10.1080/22297928.2014.985714

Cited by 4 publications

(6 citation statements)

References 10 publications

(5 reference statements)

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“…Two of them are able to form hydrogels either by chemical or physical ( e. g ., by coacervation) crosslinking: the chitosan and the poly(acrylic acid) in both neutral and ionic form. These polymers have been chosen because they have shown good performance on the removal of pesticides and, in addition, they are cheap and commercially available. The third polymer studied, i. e ., the polypropylene, has much better barrier and mechanical properties than the other mentioned polymers, being used alone ( e. g ., as geomembrane) or forming blends with chitosan and poly(acrylic acid) …”

Section: Introductionmentioning

confidence: 99%

Molecular Dynamics Insights for Screening the Ability of Polymers to Remove Pesticides from Water

2019

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The use of pesticides in agriculture is known to have environmental impacts, namely it leads to underground and spring water contamination. Thus, it turns out that nowadays general‐endeavor towards the sustainability of farmer production requires novel strategies to capture pesticides from water and soils. We propose a methodology based on molecular dynamics simulations to identify polymers that are potentially featured to be applied for pesticide remediation in water and soils. We have employed cymoxanil (CYM), glufosinate ammonium (GLF), imidacloprid (IMI) and mancozeb (MAN) as pesticides, and have tested polymers with different characteristics as removing agents. Specifically, we have investigated oligomers of polypropylene (PP), poly(acrylic acid) protonated (PAAH) and deprotonated (PAA), and chitosan protonated (CTH) and deprotonated (CT). It has been found that all oligomers show a certain degree of selectivity concerning the interaction with the tested pesticides.

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Section: Introductionmentioning

confidence: 99%

Molecular Dynamics Insights for Screening the Ability of Polymers to Remove Pesticides from Water

2019

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“…At higher pH values, the degree of dissociation of the group at the adsorbent surface is high and both the adsorbent and solutes occur in their negatively charged forms. The adsorption is consequently not favored due to the presence of some electrostatic repulsion, between the molecules and the surface adsorbent (Tiwari and Bind, 2014).…”

Section: Effect Of Phmentioning

confidence: 99%

Kinetics and Thermodynamics of Heavy Metal Adsorption using Activated Carbon Developed from Doum Palm Seeds

Mohammed,

Faruruwa,

Muhammad

et al. 2024

jobasr

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The increase in human population which prompted the need for the construction of industries has led to indiscriminate discharge of industrial effluent by these industries into our environment. This discharges most times contain heavy metal which adversely affected the ecosystem. This research evaluates the adsorption behaviour of activated carbon prepared from Hyphaenethebaica nut shells treated with K2CO3 for the treatment of heavy metal contaminated water. The characterization was carried out using FTIR and SEM. The batch adsorption technique was employed and the optimum adsorption was observed at adsorbent dose of 0.6g, initial concentration of 60 ppm, temperature of 60℃. and at contact time of 30 minutes. Optimum adsorption pH for the Heavy Metal adsorption was found to be 2. The adsorption isotherms indicated that the Langmuir isotherm model showed a better correlation (R2 ≥ 0.9) for the Heavy Metals compared to Freundlich and Temkin isotherm model. The Pseudo second order adsorption model best described the adsorption kinetics of the Heavy Metals on the adsorbent. The value for the experimental adsorption capacity for Cu2+, Pb2+, Fe2+ and Zn2+ are 3.83, 4.27, 3.92 and 3.15 respectively corresponded to the calculated adsorption capacity for the pseudo-second-order model for the heavy metals Cu2+,Pb2+,Fe2+ and Zn2+ calculated as 3.61, 3.71, 2.99 and 2.13 respectively and were closer to the experimental adsorption capacity than the calculated adsorption capacity for the pseudo-first-order model. The correlation coefficient, R2 values for the pseudo-second-order adsorption model for the heavy metals Cu2+,Pb2+,Fe2+ and Zn2+ are 0.39, 0.66.0.51 and 0.33 respectively. The ∆H° for the heavy metals Cu2+,Pb2+,Fe2+ and Zn2+ with positive values of 24.99, 25.09,24.53 and 25.00 indicates that the adsorption was endothermic and and the ∆S for the heavy metals Cu2+,Pb2+,Fe2+ and Zn2+ with values of 79.70, 80.16,78.66 and 79.79 expresses the affinity of the adsorbent for the heavy metal ions in the adsorbate. The negative values of the ∆G° indicated that the adsorption of heavy metal is spontaneous at the temperature under investigation. Thus, activated carbon from K2CO3 treated Hyphaenethebaica nut shells could therefore be used effectively for the remediation of heavy metals from industrial waste water

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“…The degree of dissociation of groups at the adsorbent surface is high at basic pH values and both the adsorbent and the solutes exist in their negatively charged forms. As a result of the electrostatic repulsion between the molecules and the surface of the adsorbent, adsorption is not favoured 28 . This pattern is similar to what has been seen for other adsorbent systems [28][29][30] .…”

Section: Effect Of Ph On Adsorption Of Ddvp From Simulated Solutionmentioning

confidence: 99%

“…As a result of the electrostatic repulsion between the molecules and the surface of the adsorbent, adsorption is not favoured 28 . This pattern is similar to what has been seen for other adsorbent systems [28][29][30] .…”

Section: Effect Of Ph On Adsorption Of Ddvp From Simulated Solutionmentioning

confidence: 99%

“…The effect of the rising concentration gradient, which is the fundamental driving force for the adsorption process, may be credited with this increase in adsorption efficiency as the initial concentration of DDVP increases. That is, by increasing the initial concentration of DDVP, the obstacle to mass transfer between the aqueous and solid phases has been overcome and the interaction between DDVP and the adsorbent has been increased 28,35 . It is also worth noting that the adsorption efficiencies (above 60%) obtained with the prepared adsorbent (SAC) at extremely low concentrations (0.001 and 0.005 mg LG 1 ) are impressive.…”

Section: Effect Of Ph On Adsorption Of Ddvp From Simulated Solutionmentioning

confidence: 99%

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Adsorptive Properties of Sawdust Activated Carbon for the 2,2-Dichlorovinyl-Dimethyl-Phosphate Removal from Agrochemical Industrial Wastewater

Okoya¹,

Akinyele²,

Farinde³

2023

Research J. of Environmental Sciences

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Background and Objective: In the aquatic environment, pesticides are the most studied class of organic toxins but their management has received little attention. The efficacy of activated carbon formed from sawdust as an adsorbent for pesticide removal from industrial wastewater was investigated as well as the effectiveness of conventional wastewater treatment processes for pesticide removal. It also compared the adsorbentʼs efficiency to activated carbon that is commercially available. Materials and Methods: The SEM-EDX, FTIR and the brunauer-emmett-teller (BET) analyzer were used to analyze sawdust-activated carbon (SAC) made from locally available sawdust. Batch adsorption experiment on simulated solutions of 2,2-Dichlorovinyl-dimethyl-phoshate (DDVP) at varied concentrations (0.001, 0.005, 0.01, 0.1 and 0.5 mg LG 1 ) using SAC. Other variables including pH, adsorbent dose and contact time were optimized. Results: The pH was 7.2±0.14, ash content was 3.1±0.00, moisture content was 2.0±0.32%, Brunner Emmett Teller surface area was 736±0.00 m 2 gG 1 , micropore volume was 0.3131±0.00 m 3 gG 1 and bulk density was 0.55±0.00, according to the SAC. In the untreated and company-treated wastewater samples, the percentage recoveries for DDVP were 86±0.71 and 88±1.41, respectively. In the adsorption of DDVP from industrial wastewater, the optimum parameters obtained during the simulation experiment were used. Sawdust activated carbon has higher adsorption efficiencies (89.06±0.014 and 88.62±0.962) than commercial activated carbon (80.94±2.744 and 77.50±0.410) for both untreated and company-treated wastewater, according to the findings. Conclusion: The sawdust-activated carbon can be used as a low-cost, high-performance and environment-friendly adsorbent when compared to commercial activated carbon for the removal of DDVP from wastewater.

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Adsorption of Pesticide (Captan) onto Super Paramagnetic Poly (Styrene-co-acrylic acid) Hydrogel from Aqueous Solution using Batch and Column Studies

Cited by 4 publications

References 10 publications

Molecular Dynamics Insights for Screening the Ability of Polymers to Remove Pesticides from Water

Molecular Dynamics Insights for Screening the Ability of Polymers to Remove Pesticides from Water

Kinetics and Thermodynamics of Heavy Metal Adsorption using Activated Carbon Developed from Doum Palm Seeds

Adsorptive Properties of Sawdust Activated Carbon for the 2,2-Dichlorovinyl-Dimethyl-Phosphate Removal from Agrochemical Industrial Wastewater

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