Effective removal of dichlorvos from aqueous solution using biopolymer modified MMT–CuO composites: Equilibrium, kinetic and thermodynamic studies

Sahithya, K.; Das, Devlina; Das, Nilanjana

doi:10.1016/j.molliq.2015.08.013

Cited by 48 publications

(6 citation statements)

References 30 publications

(26 reference statements)

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“…Hence, pH 5 was chosen for all subsequent removal steps of positively charged acetamiprid molecules. The maximum sorption is attributed to the strong van der Waals attraction between the surface groups and pesticide molecules [29].…”

Section: Effect Of Different Factors On the Adsorption Processmentioning

confidence: 99%

Porous Activated Carbon from Lignocellulosic Agricultural Waste for the Removal of Acetampirid Pesticide from Aqueous Solutions

Mohammad¹,

Ahmed

Amr

et al. 2020

Molecules

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A facile eco-friendly approach for acetampirid pesticide removal is presented. The method is based on the use of micro- and mesoporous activated carbon (TPAC) as a natural adsorbent. TPAC was synthesized via chemical treatment of tangerine peels with phosphoric acid. The prepared activated carbon was characterized before and after the adsorption process using Fourier- transform infrared (FTIR), X-ray diffraction (XRD), particle size and surface area. The effects of various parameters on the adsorption of acetampirid including adsorbent dose (0.02–0.2 g), pH 2–8, initial adsorbate concentration (10–100 mg/L), contact time (10–300 min) and temperature (25–50 °C) were studied. Batch adsorption features were evaluated using Langmuir and Freundlich isotherms. The adsorption process followed the Langmuir isotherm model with a maximum adsorption capacity of 35.7 mg/g and an equilibration time within 240 min. The adsorption kinetics of acetamiprid was fitted to the pseudo-second-order kinetics model. From the thermodynamics perspective, the adsorption was found to be exothermic and spontaneous in nature. TPAC was successfully regenerated and reused for three consecutive cycles. The results of the presented study show that TPAC may be used as an effective eco-friendly, low cost and highly efficient adsorbent for the removal of acetamiprid pesticides from aqueous solutions.

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Section: Effect Of Different Factors On the Adsorption Processmentioning

confidence: 99%

Porous Activated Carbon from Lignocellulosic Agricultural Waste for the Removal of Acetampirid Pesticide from Aqueous Solutions

Mohammad¹,

Ahmed

Amr

et al. 2020

Molecules

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“…It means that biosorbent surface has net zero charge at pHpzc. It is generally acknowledged that surface of the biosorbent has positive charges if pH < pHpzc while negative charges if pH > pHpzc 59 . Therefore, biosorption of cation is favored at a pH greater than pHpzc whereas biosorption of anion favored at a pH less than pHpzc 60 .…”

Section: Resultsmentioning

confidence: 99%

Biosorption of metribuzin pesticide by Cucumber (Cucumis sativus) peels-zinc oxide nanoparticles composite

Saeed

Muneer

Jamal

et al. 2022

Sci Rep

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Herein, a biosorbent was prepared from cucumber peels modified with ZnO nanoparticles (CPZiONp-composite) for the biosorption of metribuzin. Characterization of the composite was accomplished using FTIR, SEM, EDX, surface area pore size analyzer and pH of point of zero charge (pHpzc). Biosorption study was executed in batch concerning the impact of pH, composite dose, contact time, initial metribuzin concentration and temperature. The biosorption depends on pH and maximum biosorption was acquired at pH 3.0. Surface chemistry of the composite was studied by determining the pHpzc and was found to be 6.1. The biosorption nature was investigated using isotherms and was assessed that Freundlich isotherm is well suited for the fitting of the biosorption data owing to the highest R2. The maximum biosorption capacity of CPZiONp-composite was found to be 200 mg g-1. The biosorption data were fitted in to different kinetic models and the outcomes suggesting that pseudo second order is a satisfactory model to interpret the biosorption data owing to the highest R2. Thermodynamic parameters for instance entropy, enthalpy and Gibbs free energy were computed and revealed that biosorption of metribuzin onto CPZiONp-composite is spontaneous and exothermic process.

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“…[112] Hybrid nanocomposite materials composed of MMT, copper oxide, CS, gum ghatti, and polyacrylic acid were used as adsorbents to remove dichlorvos and monocrotophos from polluted waters. [113][114][115] Badway et al (2018) reported the use of CS/CuO and ZnO/CS for the removal of phenomiphos, lambdacynalothin, abamectin, methyl thiophanate, diazinon, imidacloprid, and methomyl. [116] In other work, CS/gold nanoparticles were used for the removal of parathion and its derivatives.…”

Section: Nanostructured Bio-polymeric Hybrid Materials Used In Aqueous Pesticide Removalmentioning

confidence: 99%

Biopolymer‐Nanocomposite Hybrid Materials as Potential Strategy to Remove Pesticides in Water: Occurrence and Perspectives

Baigorria

Fraceto

2021

Advanced Sustainable Systems

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Nations (FAO) estimates that approximately 40% of food crops are lost each year to plant pests and diseases. [2] These losses result in a shortfall in crop yields for sufficient food production, causing significant economic consequences. [1,2] Over the years, various anthropogenic activities, together with climate change, have led to alterations in ecosystems that cause considerable damage in areas such as agriculture. The reduction in biodiversity and the creation of new niches are some of these effects that allow, among other things, the rapid spread of pests. [1,2] Therefore, plant protection in agricultural crops is crucial for avoiding the impacts caused by devastating pests and diseases.Agricultural activities face the dual challenges of, on the one hand, becoming more productive and, on the other hand, reducing their impacts on the environment as much as possible. In the case of the former, the use of chemical products such as pesticides is often essential for the control of crop diseases and pests, [2][3][4] improving crop yields and providing greater food security for society. However, although the use of pesticides brings important benefits, including reduced crop damage and, consequently, increased food quality and quantity, these substances have detrimental effects on the environment. [5][6][7] One of the negative effects of the use of chemical pesticides in agricultural systems is the impact on water resources, [1,7] depending on factors including the nature of the compound used, the mode of application, and climatic variations. [1,7] The low degradability of pesticides enables them to accumulate in the soil or to be transported to surface water and groundwater, causing further environmental damage. Although the soil is the main receptor medium for these chemicals, water resources including rivers, streams, lakes, and groundwater are highly susceptible to contamination, due to the interconnection between water bodies and soil. The persistence of these compounds resulting from agricultural practices in hydrographic basins is a threat to human health. [1,4,7] Contamination of groundwater by pesticides and their residues is recognized as a problem in both advanced and developing countries. [2,8] Consequently, the scientific community faces a continuous challenge to develop suitable materials, together with new and more efficient technologies, for the

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Effective removal of dichlorvos from aqueous solution using biopolymer modified MMT–CuO composites: Equilibrium, kinetic and thermodynamic studies

Cited by 48 publications

References 30 publications

Porous Activated Carbon from Lignocellulosic Agricultural Waste for the Removal of Acetampirid Pesticide from Aqueous Solutions

Porous Activated Carbon from Lignocellulosic Agricultural Waste for the Removal of Acetampirid Pesticide from Aqueous Solutions

Biosorption of metribuzin pesticide by Cucumber (Cucumis sativus) peels-zinc oxide nanoparticles composite

Biopolymer‐Nanocomposite Hybrid Materials as Potential Strategy to Remove Pesticides in Water: Occurrence and Perspectives

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