KOH modified<i>Thevetia peruviana</i>shell activated carbon for sorption of dimethoate from aqueous solution

Williams, Ndifreke Etuk; Aydinlik, Nur Pasaoglulari

doi:10.1080/03601234.2018.1501143

Cited by 21 publications

(6 citation statements)

References 50 publications

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“…For malathion, the range is 1-12.6 min. Similarly to chlorpyrifos, the estimated half-times for dimethoate adsorption on studied ACFs are in the same range or lower, compared to those found in the literature or calculated based on reported k 1 , as with the case of KOH-modified Thevetia peruviana shell-activated carbon [41]. The studied ACFs are very efficient adsorbents for malathion removal and also possess better adsorption kinetics than some other carbons, like waste-derived activated carbons [26].…”

Section: Dimethoate and Malathion Removalsupporting

confidence: 68%

Investigating the Adsorption Kinetics of Dimethoate, Malathion and Chlorpyrifos on Cellulose-Derived Activated Carbons: Understanding the Influence of Physicochemical Properties

Lazarević-Pašti,

Jocić,

Milanković

et al. 2023

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In light of the escalating environmental concerns regarding pesticide accumulation, it is imperative to devise efficient strategies for their removal. Among the various options, activated carbons have emerged as promising candidates for adsorptive pesticide removal due to their many advantages, such as large surface area, well-developed porosity, and cost-effectiveness. However, the intricate relationship between the properties of these materials and their performance in pesticide adsorption remains largely unexplored. This study primarily focuses on examining the adsorption kinetics of three organophosphate pesticides: dimethoate, malathion (aliphatic), and chlorpyrifos (aromatic), using a range of cellulose-based activated carbon fibers with diverse specific surface areas, pore size distributions, and elemental compositions. By employing sophisticated data analysis tools, principal component analysis, and semi-empirical quantum chemical calculations, this study uncovers the importance of these distinct properties in efficiently removing structurally diverse pesticides. The results of the adsorption experiments suggested that these processes can be described using a pseudo-second-order kinetic model, which is confirmed via multiple linear regression. The obtained data suggest that the most effective carbon material for pesticide removal should have a pore diameter of approximately 4 nm, low oxygen content, a unimodal pore size distribution, and a high presence of sp2 domains. The insights from this research have the potential to guide the development of improved adsorbents and facilitate the rational selection of adsorbents tailored to specific pollutants based on their physicochemical properties and the pollutants’ chemical structure. By shedding light on the vital connection between adsorbent properties and performance, our findings significantly advance sustainable and effective pesticide removal, thereby fostering a cleaner and healthier environment.

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Section: Dimethoate and Malathion Removalsupporting

confidence: 68%

Investigating the Adsorption Kinetics of Dimethoate, Malathion and Chlorpyrifos on Cellulose-Derived Activated Carbons: Understanding the Influence of Physicochemical Properties

Lazarević-Pašti,

Jocić,

Milanković

et al. 2023

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“…The thermal modifications are necessary to ensure that the moisture content of CP is reduced to the desired level. It is critical to enhance the diesel sorption, which is essential in oil spill clean-up [53]. The basic method of drying coir pith/peat is to expose it to the sunlight and to allow spontaneous evaporation to ensue.…”

Section: Effects Of Heating Timementioning

confidence: 99%

“…The RSM approach ensures the optimisation of all given significant factors by providing interactions between the factors and responses. Additionally, based on the comparison between experimental and predicted values, the deduction on the variables could be accurately determined with a minimal number of experimental runs and errors [53,60,62].…”

Section: Model Validation and Performance Analysismentioning

confidence: 99%

Coco Peat as Agricultural Waste Sorbent for Sustainable Diesel-Filter System

Verasoundarapandian

Zakaria

Shaharuddin

et al. 2021

Plants

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Oil spill incidents are hazardous and have prolonged damage to the marine environment. Management and spill clean-up procedures are practical and rapid, with several shortcomings. Coco peat (CP) and coco fibre (CF) are refined from coconut waste, and their abundance makes them desirable for diesel spillage treatment. Using a filter-based system, the selectivity of coco peat sorbent was tested using CP, CF and peat-fibre mix (CPM). CP exhibited maximal diesel sorption capacity with minimal seawater uptake, thus being selected for further optimisation analysis. The heat treatment considerably improved the sorption capacity and efficiency of diesel absorbed by CP, as supported by FTIR and VPSEM–EDX analysis. Conventional one-factor-at-a-time (OFAT) examined the performance of diesel sorption by CP under varying parameters, namely temperature, time of heating, packing density and diesel concentration. The significant factors were statistically evaluated using response surface methodology (RSM) via Plackett–Burman design (PB) and central composite design (CCD). Three significant (p < 0.05) factors (time, packing density and diesel concentration) were identified by PB and further analysed for interactions among the parameters. CCD predicted efficiency of diesel absorbed at 59.92% (71.90 mL) (initial diesel concentration of 30% v/v) and the experimental model validated the design with 59.17% (71.00 mL) diesel sorbed at the optimised conditions of 14.1 min of heating (200 °C) with packing density of 0.08 g/cm3 and 30% (v/v) of diesel concentration. The performance of CP in RSM (59.17%) was better than that in OFAT (58.33%). The discoveries imply that natural sorbent materials such as CP in oil spill clean-up operations can be advantageous and environmentally feasible. This study also demonstrated the diesel-filter system as a pilot study for the prospective up-scale application of oil spills.

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“…For malathion, the range is 1 min to 12.6 min. Similarly to chlorpyrifos, the estimated half-times for dimethoate adsorption on studied ACFs are in the range or lower compared to those which can be found in the literature or calculated on the basis of reported k1, like for the case of KOH-modified Thevetia peruviana shell activated carbon [29]. The studied ACF are very efficient adsorbents for malathion removal and also possess better adsorption kinetics than some other carbons, like waste-derived activated carbons [30].…”

Section: Tablementioning

confidence: 61%

Kinetics of Dimethoate, Malathion, and Chlorpyrifos Adsorption on Cellulose-derived Activated Carbons – Linking Performance to the Physicochemical Properties

Lazarević‐Pašti¹,

Jocić²,

Milanković³

et al. 2022

Preprint

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Due to the accumulation of pesticides in the environment, the development of efficient strategies for their removal is of utmost importance. Activated carbons are currently seen as excellent candidates for adsorptive pesticide removal based on several beneficial properties, like a large surface area, developed porosity, and low price. However, a deep link between materials' properties and performance is still elusive. Here we focus on the kinetics of three organophosphate pesticides removal, aliphatic dimethoate and malathion and aromatic chlorpyrifos, using a series of carefully prepared activated carbon fibers. Used adsorbents have a wide range of specific surface areas, pore size distributions, and elemental content, allowing the establishment of the link between physicochemical properties and their performance as adsorbents. We use data analysis tools to link these properties and discuss their different roles in the removal of three structurally different yet extremely dangerous pesticides. The obtained results can guide the synthesis of novel adsorbents or rationally select adsorbents for specific target pollutants based on the physicochemical properties of adsorbents and the chemical structure of pollutants.

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KOH modifiedThevetia peruvianashell activated carbon for sorption of dimethoate from aqueous solution

Cited by 21 publications

References 50 publications

Investigating the Adsorption Kinetics of Dimethoate, Malathion and Chlorpyrifos on Cellulose-Derived Activated Carbons: Understanding the Influence of Physicochemical Properties

Investigating the Adsorption Kinetics of Dimethoate, Malathion and Chlorpyrifos on Cellulose-Derived Activated Carbons: Understanding the Influence of Physicochemical Properties

Coco Peat as Agricultural Waste Sorbent for Sustainable Diesel-Filter System

Kinetics of Dimethoate, Malathion, and Chlorpyrifos Adsorption on Cellulose-derived Activated Carbons – Linking Performance to the Physicochemical Properties

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