Uptake of micropollutant-bisphenol A, methylene blue and neutral red onto a novel bagasse-β-cyclodextrin polymer by adsorption process

Mpatani, Farid Mzee; Aryee, Aaron Albert; Kani, Alexander Nti; Guo, Qiehui; Dovi, Evans; Qu, Lingbo; Li, Zhaohui; Han, Runping

doi:10.1016/j.chemosphere.2020.127439

Cited by 121 publications

(35 citation statements)

References 73 publications

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“…Both coexistence ions (Ca-cations and Cl-anions) had positive effects of χ 2 = ∑ðq eðmeasÞ − q eðtheoÞ Þ 2 /q eðtheoÞ , where q eðmeasÞ and q eðtheoÞ are experimental measured and theoretical calculated adsorption capacities, respectively. reported by Mpatani et al [26] on SB-βCD polymer adsorbent. At the same time, the Clions in solution can act as inorganic ligands that strongly have affinity to oxidized AgNPs into dissolution state [50,51] and resulting oxidative degradation of BPA.…”

Section: Influence Of Cations Andmentioning

confidence: 89%

Impregnation of Silver Nanoparticles onto Polymers Based on Sugarcane Bagasse for the Remediation of Endocrine Disruptor–Bisphenol A from Water

Mpatani

Kombo

Kheir

et al. 2022

Adsorption Science & Technology

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This present study introduces a contemporary innovation of synthesized polymer–silver nanoparticle nanocomposite adsorbent based on sugarcane bagasse (AgNP-SB-βCD) for the sequestration of emerging micropollutant–bisphenol A from water matrix. Batch adsorption mode was carried out to assess the effectiveness of AgNP-SB-βCD nanocomposites towards eliminating bisphenol A (BPA). Characterization techniques including SEM, FTIR, and XRD have confirmed the successful incorporation of silver nanoparticles (AgNPs) onto bagasse–polymer. At 25°C, pH 7, and contact time of 120 min, the nanocomposites had a maximum uptake capacity of 158.4 mg g-1on BPA. The equilibrium isotherm of BPA on AgNPs-SB-βCD has fitted effectively with Langmuir model while the adsorption kinetics conformed to pseudo-second order. The adsorption phenomenon was controlled mainly by physisorption (via host–guest inclusion van der Waals bonding and pore filling effect). In addition, oxidative degradation of BPA by AgNPs-SB-βCD could marginally contribute the removal of BPA due to oxidative dissolution of AgNPs at pH 7. The thermodynamic results substantiate the spontaneity and exothermic behaviors of the adsorption phenomenon. The polymeric nanocomposite adsorbent was regenerated five times (using 75% ethanol) without considerable loss of its adsorption capacity. This authenticates its reusability and consistency performances; accordingly, it can be a market competitor adsorbent for the treatment of water contaminated with BPA.

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Section: Influence Of Cations Andmentioning

confidence: 89%

Impregnation of Silver Nanoparticles onto Polymers Based on Sugarcane Bagasse for the Remediation of Endocrine Disruptor–Bisphenol A from Water

Mpatani

Kombo

Kheir

et al. 2022

Adsorption Science & Technology

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“…The polymerization seems to enlarge the surface area and also increased the average pore size of the adsorbent from 17.8 (WNS) to 32.7 nm (ACWNS). This could be ascribed to a decrease in the number of hydroxyl groups on WNS as they react actively with amine groups under excessive heat causing the widening of the pores sited in WNS (Ribeiro et al, 2019;Mpatani et al, 2020). The textural characteristics of ACWNS influenced the interactions between the adsorbent and pollutants, as a result increasing the adsorption quantity of both phosphate and nitrate.…”

Section: Brunauer-emmett-teller Analysismentioning

confidence: 99%

“…Previous works reveal that WNS was less utilized compared with other agricultural wastes such as peanut husk (Mpatani et al, 2021) rice husk, bagasse (Hamoudi and Belkacemi, 2013;Mpatani et al, 2020). However, WNS could be considered as a critical agricultural waste content as a result of its large production.…”

Section: Introductionmentioning

confidence: 99%

Amine-grafted Walnut Shell for Efficient Removal Phosphate and Nitrate from Aqueous Solution

Dovi¹,

Aryee²,

Li³

et al. 2021

Preprint

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The presence of emerging pollutants such as PO43− and NO3− in water bodies has attracted worldwide concern about their severe effects on water bodies and the health of humankind in general. Therefore, to preserve the health of humankind and environmental safety, it is of the essence that industrial effluents are treated before they are discharged into water bodies. To accomplish this, the walnut shell was functionalized (ACWNS) with amine for effective removal of PO43− and NO3−. Characterization studies of ACWNS were conducted using FTIR, XRD, XPS and BET techniques. Removal of both ions was enhanced at lower temperature (293 K). The maximum uptake capacity of phosphate and nitrate, at 293 K, was 82.2 and 35.7 mg g− 1, respectively. The primary mechanism by which these ions were uptaken onto ACWNS could be electrostatic interactions and hydrogen bonding.Pseudo-second-order kinetics fitted the PO43̶ and NO3− adsorption, while Freundlich and Langmuir models best fitted the PO43̶ and NO3̶ adsorption, respectively. Furthermore, in the binary system, the uptake capacity of phosphate decreased by 14.4% while nitrate witnessed a reduction in its uptake capacity by 10.4 %. So ACWNS has a higher attraction towards both ions and this could be attributed to the existence of a variety of active areas on ACWNS that exhibit a degree of specificity for the individual anions. Results obtained from real water samples analysis confirmed ACWNS as highly efficient to be utilized for practical remediation processes.

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“…As environmental issues are becoming more important, intense research interest has been dedicated to the removal of pollutants from water using different cyclodextrins-polymer systems that are tailored to eliminate organic or inorganic pollutants based on the adsorption process of the targeted molecule [ 20 , 21 , 22 ]. Based on the 3D spatial structure of CDs and on the hydrophilic/hydrophobic building, the enhanced removal of pollutants is based on guest-host interactions between the cyclodextrin derivative and the targeted pollutant.…”

Section: Introductionmentioning

confidence: 99%

Novel Chemical Architectures Based on Beta-Cyclodextrin Derivatives Covalently Attached on Polymer Spheres

et al. 2021

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This study presents the synthesis and characterization of polymer derivatives of beta-cyclodextrin (BCD), obtained by chemical grafting onto spherical polymer particles (200 nm) presenting oxirane functional groups at their surface. The polymer spheres were synthesized by emulsion polymerization of styrene (ST) and hydroxyethyl methacrylate (HEMA), followed by the grafting on the surface of glycidyl methacrylate (GMA) by seeded emulsion polymerization. The BCD-polymer derivatives were obtained using two BCD derivatives with hydroxylic (BCD-OH) and amino groups (BCD-NH2). The degree of polymer covalent functionalization using the BCD-OH and BCD-NH2 derivatives were determined to be 4.27 and 19.19 weight %, respectively. The adsorption properties of the materials were evaluated using bisphenol A as a target molecule. The best fit for the adsorption kinetics was Lagergren’s model (both for Qe value and for R2) together with Weber’s intraparticle diffusion model in the case of ST-HEMA-GMA-BCD-NH2. The isothermal adsorption evaluation indicated that both systems follow a Langmuir type behavior and afforded a Qmax value of 148.37 mg g−1 and 37.09 mg g−1 for ST-HEMA-GMA-BCD-NH2 and ST-HEMA-GMA-BCD-OH, respectively. The BCD-modified polymers display a degradation temperature of over 400 °C which can be attributed to the existence of hydrogen bonds and BCD thermal degradation pathway in the presence of the polymers.

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Uptake of micropollutant-bisphenol A, methylene blue and neutral red onto a novel bagasse-β-cyclodextrin polymer by adsorption process

Cited by 121 publications

References 73 publications

Impregnation of Silver Nanoparticles onto Polymers Based on Sugarcane Bagasse for the Remediation of Endocrine Disruptor–Bisphenol A from Water

Impregnation of Silver Nanoparticles onto Polymers Based on Sugarcane Bagasse for the Remediation of Endocrine Disruptor–Bisphenol A from Water

Amine-grafted Walnut Shell for Efficient Removal Phosphate and Nitrate from Aqueous Solution

Novel Chemical Architectures Based on Beta-Cyclodextrin Derivatives Covalently Attached on Polymer Spheres

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