Removal of imidacloprid using activated carbon produced from ricinodendron heudelotii shells

Urbain, Kouakou Yao; Fodjo, Essy Kouadio; Ardjouma, D.; Serge, Brou Yapi; Aimé, E. S.; Marc, Gouli Bi Irié; Trokourey, Albert

doi:10.4314/bcse.v31i3.4

Cited by 28 publications

(11 citation statements)

References 32 publications

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“…For the sake of comparison, the values of RE and q m reported in the Table 1 for the removal of IMD by using AC [ 40 , 41 ] are lower than those obtained by us, and are similar to those corresponding to the use of PCD/AC 5% and PCD/AC 10% .…”

Section: Resultssupporting

confidence: 55%

Poly(β-cyclodextrin)-Activated Carbon Gel Composites for Removal of Pesticides from Water

et al. 2021

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Pesticides are widely used in agriculture to increase and protect crop production. A substantial percentage of the active substances applied is retained in the soil or flows into water courses, constituting a very relevant environmental problem. There are several methods for the removal of pesticides from soils and water; however, their efficiency is still a challenge. An alternative to current methods relies on the use of effective adsorbents in removing pesticides which are, simultaneously, capable of releasing pesticides into the soil when needed. This reduces costs related to their application and waste treatments and, thus, overall environmental costs. In this paper, we describe the synthesis and preparation of activated carbon-containing poly(β-cyclodextrin) composites. The composites were characterized by different techniques and their ability to absorb pesticides was assessed by using two active substances: cymoxanil and imidacloprid. Composites with 5 and 10 wt% of activated carbon showed very good stability, high removal efficiencies (>75%) and pesticide sorption capacity up to ca. 50 mg g−1. The effect of additives (NaCl and urea) was also evaluated. The composites were able to release around 30% of the initial sorbed amount of pesticide without losing the capacity to keep the maximum removal efficiency in sorption/desorption cycles.

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Section: Resultssupporting

confidence: 55%

Poly(β-cyclodextrin)-Activated Carbon Gel Composites for Removal of Pesticides from Water

et al. 2021

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“…Thus, the removal of these pollutants from water is essential due to their harmful influence on human health and aquatic ecosystems. Various methods can be applied for the degradation of IMI from aqueous solutions such as microfiltration membrane [11], biological degradation [12], adsorption [13,14], and advanced oxidation processes (AOPs) [15,16]. Among the AOP methods, photocatalytic activity has been used effectively in wastewater treatment for the removal of organic pollutants due to its simplicity, high activity, low cost, and ability to reduce CO 2 [17,18].…”

Section: Introductionmentioning

confidence: 99%

Identification of Active Species in Photodegradation of Aqueous Imidacloprid over g-C3N4/TiO2 Nanocomposites

et al. 2022

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In this work, g-C3N4/TiO2 composites were fabricated through a hydrothermal method for the efficient photocatalytic degradation of imidacloprid (IMI) pesticide. The composites were fabricated at varying loading of sonochemically exfoliated g-C3N4 (denoted as CNS). Complementary characterization results indicate that the heterojunction between the CNS and TiO2 formed. Among the composites, the 0.5CNS/TiO2 material gave the highest photocatalytic activity (93% IMI removal efficiency) under UV-Vis light irradiation, which was 2.2 times over the pristine g-C3N4. The high photocatalytic activity of the g-C3N4/TiO2 composites could be ascribed to the band gap energy reduction and suppression of photo-induced charge carrier recombination on both TiO2 and CNS surfaces. In addition, it was found that the active species involved in the photodegradation process are OH and holes, and a possible mechanism was proposed. The g-C3N4/TiO2 photocatalysts exhibited stable photocatalytic performance after regeneration, which shows that g-C3N4/TiO2 is a promising material for the photodegradation of imidacloprid pesticide in wastewater.

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“…They can be obtained by carbonization and activation of a precursor already containing a large part of carbon and a low percentage of inorganic matter. Enough plant debris and animal bones have been used to produce activated charcoal [4]- [9]. Thus, coconut shells [4], cocoa pods [5], peanut shells [6], rice bran [7], chicken bones [8] and corn cobs [9] were used to produce activated carbon.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Preparation Conditions of Activated Carbons Based on the Shells of <i>Ricinodendron heudoltii</i>

Urbain¹,

Daouda²,

Eric-Simon³

et al. 2022

MSCE

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The purpose of this work is to prepare better activated carbons from the shells of Ricinodendron Heudelotii by chemical activation with sulfuric acid (H 2 SO 4 ) and sodium hydroxide (NaOH). The process was optimized by a full factorial design (2 K ) based on the analysis of the external specific surface area of sixteen ( 16) activated carbons prepared according to the parameters of the preparation. This active analysis reveals that under the preparation conditions, good carbons are obtained for a sodium hydroxide concentration equal to 1 M, an impregnation time of 24 h and carbonization at 500˚C for 1 h. The external specific surface of this carbon is 358 m 2 •g −1 . The characteristics of this prepared carbon are as follows: a pH at zero point charge (pHpzc) of 8.2, a predominantly amorphous structure, a basic character and a low ash content (4.2%). It also has surface functions; the lactonic and carbonyl groups (C=O) at 1600 cm −1 and the carboxylate groups (O-H or C-O) at 1340 cm −1 .

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Removal of imidacloprid using activated carbon produced from ricinodendron heudelotii shells

Cited by 28 publications

References 32 publications

Poly(β-cyclodextrin)-Activated Carbon Gel Composites for Removal of Pesticides from Water

Poly(β-cyclodextrin)-Activated Carbon Gel Composites for Removal of Pesticides from Water

Identification of Active Species in Photodegradation of Aqueous Imidacloprid over g-C3N4/TiO2 Nanocomposites

Optimization of Preparation Conditions of Activated Carbons Based on the Shells of <i>Ricinodendron heudoltii</i>

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Removal of imidacloprid using activated carbon produced from ricinodendron heudelotii shells

Cited by 28 publications

References 32 publications

Poly(β-cyclodextrin)-Activated Carbon Gel Composites for Removal of Pesticides from Water

Poly(β-cyclodextrin)-Activated Carbon Gel Composites for Removal of Pesticides from Water

Identification of Active Species in Photodegradation of Aqueous Imidacloprid over g-C3N4/TiO2 Nanocomposites

Optimization of Preparation Conditions of Activated Carbons Based on the Shells of &lt;i&gt;Ricinodendron heudoltii&lt;/i&gt;

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Optimization of Preparation Conditions of Activated Carbons Based on the Shells of <i>Ricinodendron heudoltii</i>