Ampicillin adsorption onto amine-functionalized magnetic graphene oxide: synthesis, characterization and removal mechanism

Ha, Hoang Thu; Minh, Tran Dinh; Nguyet, Ha Minh; Sharma, Ajit

doi:10.1007/s11814-020-0678-z

Cited by 25 publications

(18 citation statements)

References 46 publications

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“…Since, the PP phase is less etched out from the TPV matrix due to the peroxide master batch preparation and due to some agglomeration, cloudy type morphology has been observed, depicted in the Figure 10P1. There is not much difference between the sample B1 and T1, lamellar and spherical type morphology has been observed 37–41 …”

Section: Resultsmentioning

confidence: 89%

Influence of different mixing sequence on UHMW‐EPDM based thermoplastic vulcanizates: Mechanical, rheological and morphological characteristics

Bhattacharya

Das

Sreethu

et al. 2022

J of Applied Polymer Sci

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An important factor for the preparation of thermoplastic vulcanizates (TPVs) is the mixing sequence or technique as it is controlling the product quality and production rate. The effect of different routes of mixing sequences on the mechanical properties and rheological properties have been studied. Four different types of mixing sequences have been pursued and ultra-high molecular weight EPDM (UHMW-EPDM) master batch technique has shown maximum prospect over the melt blending method. Co-agent master-batch sample showed optimum balance between TS and %EB over the other master-batch samples. Melt blending technique shows moderate properties for all cases. Rheological data follows the same trend as observed for the mechanical properties. Crosslink density also found the highest for the co-agent master-batch sample and co-agent/peroxide master-batch sample over the other two samples. Cryo-fractured and etched TPV samples were prepared and examined in FE-SEM. Co-agent master-batch sample shows the droplet type morphology.This new type of UHMW-EPDM based TPV with co-agent/rubber masterbatch mixing technique leads to superior physico-mechanical properties over the other mixing techniques. These newly established TPVs can be used as various injection molded parts, esthetic seals/strips and 2K-molds for the automotive applications.

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Section: Resultsmentioning

confidence: 89%

Influence of different mixing sequence on UHMW‐EPDM based thermoplastic vulcanizates: Mechanical, rheological and morphological characteristics

Bhattacharya

Das

Sreethu

et al. 2022

J of Applied Polymer Sci

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“…FTIR spectra of C-Fe/Ce before and after sorption are presented in Figure 3b) where to 600 cm À1 is present the aromatic vibration -CH 2 , and is observed that after adsorption process disappears; the bands in the range of 520-590 cm À1 are attributed to the presence of O-Metal [30], for the magnetite Fe 3 O 4 (586 cm À1 ) are observed the groups Fe-O (570-550 cm À1 ) [31] and Ce-O (530 cm À1 ). However, after the sorption of AMP, the vibrations from 570-550 cm À1 decrease in intensity, which suggests that an interaction between Fe-O and the AMP molecule, because Fe-O in an acid medium can be form cations that bind with the AMP anion's groups [32,33,34,35,36,37]. According to the results obtained at the isoelectric point in a pH range of 1-9, the surface of the material is positively charged, favoring the attraction of anions of the AMP through electrostatic interaction.…”

Section: Characterizationmentioning

confidence: 99%

Obtention of biochar-Fe/Ce using Punica granatum with high adsorption of ampicillin capacity

Gómez-Vilchis

García-Rosales

Longoria-Gándara

et al. 2022

Heliyon

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This research presents the obtaining of a biochar (CB) from the use of pomegranate peel (Punica granatum) conditioned with iron and cerium nanoparticles (C-Fe/Ce), as well as its characterization by SEM (Scanning Electronic Microscopy), FTIR (Fourier Transform Infrared Spectrometry), TGA (Thermogravimetric analysis), EDS (Energy Dispersive Spectroscopy), XPS (X-Ray Photoelectron Spectroscopy) and evaluation of the adsorption capacity of ampicillin (AMP) in aqueous phase at 20, 30 and 40 C. The maximum adsorption capacity for CB was 18.97 mg g À1 and for C-Fe/Ce, 27.61 mg g À1 at pH of 7, observing that with increasing temperature, the sorption capacity decreases in both materials, the experimental data was fitted to various mathematical models and the best fit was the pseudo-second order model for the kinetics, whilst for the adsorption isotherms the best fit was with the Langmuir model, indicating that the adsorption process is carried out in a monolayer on a homogeneous surface, through a chemisorption process. According to the thermodynamic parameters this process is carried out through an exothermic reaction. The results obtained indicate that both materials are suitable for the removal of AMP in the aqueous phase and that they can be reused up to 5 times.

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“…On January 11 th 2007, Vietnam officially became the WTO member [28]. Follow- [3,29]. In 2008, the Central Party Committee issued Resolution No.…”

Section: Extensive Commercial and Export-oriented Productionmentioning

confidence: 99%

Agricultural Restructure Policy in Vietnam and Practical Application for Sustainable Development in Agriculture

Ngoc

Hùng

Pham

2021

Journal of Nanomaterials

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The Vietnam’s agricultural sector had to challenge with its course and learned lessons of further development. Novel policy might be adopted to encourage the private investments and sectors in agriculture. Furthermore, an introduction of new models such as climate-smart or green agriculture and application of modern technology increased productivity at the same time and creating jobs for millions of agricultural workers and reversing the massive rural-urban migration flux. Vietnam’s agricultural sector needs to maintain the reform momentum, particularly liberalization policy, and to boost up agricultural potential. Obstacles such as land limitation policy must be removed to enable large-scale production and encourage private investment in the agricultural sector. To avoid being trapped by its own success, Vietnam is now shifting the old development paradigm that focuses too much on the quantity to the quality of the agricultural production. The government makes major efforts to achieve at the same time agricultural growth, better livelihood of the farmer, and the development of the rural areas. However, Vietnam still needs to prepare a “transition strategy” to overcome the impact of the technological progress on the traditional agricultural workers.

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Ampicillin adsorption onto amine-functionalized magnetic graphene oxide: synthesis, characterization and removal mechanism

Cited by 25 publications

References 46 publications

Influence of different mixing sequence on UHMW‐EPDM based thermoplastic vulcanizates: Mechanical, rheological and morphological characteristics

Influence of different mixing sequence on UHMW‐EPDM based thermoplastic vulcanizates: Mechanical, rheological and morphological characteristics

Obtention of biochar-Fe/Ce using Punica granatum with high adsorption of ampicillin capacity

Agricultural Restructure Policy in Vietnam and Practical Application for Sustainable Development in Agriculture

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