Fabrication of magnetically separable 3-acrylamidopropyltrimethylammonium chloride intercalated bentonite composite for the efficient adsorption of cationic and anionic dyes

Ain, Qurat Ul; Rasheed, Usman; Muhammad, Yaseen; Zhang, Hanbing; He, Ruining; Tong, Zhangfa

doi:10.1016/j.apsusc.2020.145929

Cited by 47 publications

(17 citation statements)

References 75 publications

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“…Thus, fresh and AFB1 adsorbed BB samples were analyzed by XPS for surface elemental composition including C, O and N and the results are compiled in Figure 4 . Full survey scans clearly indicated high intensity C and O peaks at binding energy (BE) of 284 and 532 eV [ 35 , 36 ] respectively in both BB and BB-AFB1. Very low intensity N peaks were observed at BE of 400 eV and 399 eV for BB and BB-AFB1 respectively [ 32 ].…”

Section: Resultsmentioning

confidence: 99%

“…The increase in the adsorption was very sharp initially and onward became milder after achieving equilibrium. This is because increase in dosage causes an increase in the specific surface area and active binding sites necessary for efficient adsorption [ 35 , 36 ]. Therefore, an optimized dosage of 2.0 g/L was selected for further experiments.…”

Section: Resultsmentioning

confidence: 99%

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Assessing the Aflatoxins Mitigation Efficacy of Blueberry Pomace Biosorbent in Buffer, Gastrointestinal Fluids and Model Wine

Rasheed

Ain

Muhammad

et al. 2020

Toxins

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Blueberry (BB) and cherry pomace were investigated as new biosorbents for aflatoxins (AFs) sequestration from buffered solutions, gastrointestinal fluids and model wine. Among the tested biosorbents, BB exhibited the maximum adsorption performance for AFs and hence was further selected for the optimization of experimental parameters like pH, dosage, time and initial concentration of AFs. Material characterizations via scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, N2 adsorption-desorption isothermal studies, thermogravimetric analysis (TGA) and X-ray photon spectroscopy (XPS) techniques revealed useful information about the texture and chemical composition of the biosorbents. The fitting of isothermal data with different models showed the model suitability trend as: Sips model > Langmuir model > Freundlich model, where the theoretical maximum adsorption capacity calculated from the Sips model was 4.6, 2.9, 2.7 and 2.4 mg/g for AFB1, AFB2, AFG1 and AFG2, respectively. Kinetics study revealed the fast AFs uptake by BB (50–90 min) while thermodynamics studies suggested the exothermic nature of the AFs adsorption from both, single as well as multi-toxin buffer systems, gastrointestinal fluids and model wine. Accrediting to the fast and efficient adsorption performance, green and facile fabrication approach and cost-effectiveness, the newly designed BB pomace can be counted as a promising contender for the sequestration of AFs and other organic pollutants.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Assessing the Aflatoxins Mitigation Efficacy of Blueberry Pomace Biosorbent in Buffer, Gastrointestinal Fluids and Model Wine

Rasheed

Ain

Muhammad

et al. 2020

Toxins

Self Cite

View full text Add to dashboard Cite

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“…When compared with MB, the higher Q eq value for ST is due to hydrogen bonding between -COOH groups of TpPa-COOH and -NH 2 groups of the dye ST (Scheme 2). [21,46] The outstanding adsorption performance of TpPa-COOH for the two cationic dyes makes it potentially be used to adsorb organic dyes in the field of water pollution.…”

Section: Resultsmentioning

confidence: 99%

A Carboxyl‐Functionalized Covalent Organic Framework Synthesized in a Deep Eutectic Solvent for Dye Adsorption

Dong

Wang

et al. 2021

Chemistry A European J

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Instead of using organic solvents, a deep eutectic solvent (DES) composed of tetrabutylammonium bromide and imidazole (Bu4NBr/Im) was employed as a solvent for the first time to synthesize covalent organic frameworks (COFs). Due to the low vapor pressure of the Bu4NBr/Im‐based DES, a new carboxyl‐functionalized COF (TpPa‐COOH) was synthesized under environmental pressure. The as‐synthesized TpPa‐COOH has open channels, and the DES can be removed completely from the pores. The dye adsorption performance of TpPa‐COOH was examined for three organic dyes with similar molecular sizes: one anionic dye (eosin B, EB) and two cationic dyes (methylene blue, MB and safranine T, ST). TpPa‐COOH showed an excellent selective adsorption effect on MB and ST. The electronegative keto form in TpPa‐COOH might help to form electrostatic and π–π interactions between the π‐stacking frameworks of TpPa‐COOH and the positive plane MB and ST molecules. The adsorption isotherms of MB and ST on TpPa‐COOH were further investigated in detail, and the equilibrium adsorption was well modeled by using a Langmuir isotherm model. Together with hydrogen bonding, TpPa‐COOH showed higher adsorption capacity for ST than for MB (1135 vs. 410 mg g−1). These results could provide a guidance for the green synthesis of adsorbents in removing organic dyes from wastewater.

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“…Many different materials, including active carbon [ 102 ], carbon nanofiber aerogels [ 108 ], nanotubes [ 92 , 95 ], reduced graphene oxide [ 103 ], LDH [ 159 ], bentonite [ 100 ], and MoS 2 [ 101 ], have been studied as potential adsorbents. However, these adsorbents cannot be easily separated after utilization, which restricts their application and development.…”

Section: Conventional Synthesis Methods Of Magnetic Adsorbentsmentioning

confidence: 99%

Magnetic Adsorbents for Wastewater Treatment: Advancements in Their Synthesis Methods

et al. 2022

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The remediation of water streams, polluted by various substances, is important for realizing a sustainable future. Magnetic adsorbents are promising materials for wastewater treatment. Although numerous techniques have been developed for the preparation of magnetic adsorbents, with effective adsorption performance, reviews that focus on the synthesis methods of magnetic adsorbents for wastewater treatment and their material structures have not been reported. In this review, advancements in the synthesis methods of magnetic adsorbents for the removal of substances from water streams has been comprehensively summarized and discussed. Generally, the synthesis methods are categorized into five groups, as follows: direct use of magnetic particles as adsorbents, attachment of pre-prepared adsorbents and pre-prepared magnetic particles, synthesis of magnetic particles on pre-prepared adsorbents, synthesis of adsorbents on preprepared magnetic particles, and co-synthesis of adsorbents and magnetic particles. The main improvements in the advanced methods involved making the conventional synthesis a less energy intensive, more efficient, and simpler process, while maintaining or increasing the adsorption performance. The key challenges, such as the enhancement of the adsorption performance of materials and the design of sophisticated material structures, are discussed as well.

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Fabrication of magnetically separable 3-acrylamidopropyltrimethylammonium chloride intercalated bentonite composite for the efficient adsorption of cationic and anionic dyes

Cited by 47 publications

References 75 publications

Assessing the Aflatoxins Mitigation Efficacy of Blueberry Pomace Biosorbent in Buffer, Gastrointestinal Fluids and Model Wine

Assessing the Aflatoxins Mitigation Efficacy of Blueberry Pomace Biosorbent in Buffer, Gastrointestinal Fluids and Model Wine

A Carboxyl‐Functionalized Covalent Organic Framework Synthesized in a Deep Eutectic Solvent for Dye Adsorption

Magnetic Adsorbents for Wastewater Treatment: Advancements in Their Synthesis Methods

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