Preparation of high-capacity macroporous adsorbent using lignite-derived humic acid and its multifunctional binding chemistry for heavy metals in wastewater

Wan, Keji; Xiao, Yawen; Fan, Jinjin; Miao, Zhenyong; Wang, Guoqiang; Xue, Shuwen

doi:10.1016/j.jclepro.2022.132498

Cited by 19 publications

(6 citation statements)

References 38 publications

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“…The curves in Figure 4 d are composed of three linear stages, the presence of multilinearity confirms that intraparticle diffusion is not the only rate-determining step [ 49 ]. The first stage involves the rapid diffusion of sulfonamides on the surface of BiFeO 3 /MXene; the second is the diffusion process of sulfonamides molecules into the pore of BiFeO 3 /MXene; the final stage is the chemical bonding which eventually resulted in adsorption equilibrium [ 50 ].…”

Section: Resultsmentioning

confidence: 99%

Effective Removal of Sulfonamides Using Recyclable MXene-Decorated Bismuth Ferrite Nanocomposites Prepared via Hydrothermal Method

Sanga

Wang

et al. 2023

Molecules

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Developing a simple and efficient method for removing organic micropollutants from aqueous systems is crucial. The present study describes the preparation and application, for the first time, of novel MXene-decorated bismuth ferrite nanocomposites (BiFeO3/MXene) for the removal of six sulfonamides including sulfadiazine (SDZ), sulfathiazole (STZ), sulfamerazine (SMZ), sulfamethazine (SMTZ), sulfamethoxazole (SMXZ) and sulfisoxazole (SXZ). The properties of BiFeO3/MXene are enhanced by the presence of BiFeO3 nanoparticles, which provide a large surface area to facilitate the removal of sulfonamides. More importantly, BiFeO3/MXene composites demonstrated remarkable sulfonamide adsorption capabilities compared to pristine MXene, which is due to the synergistic effect between BiFeO3 and MXene. The kinetics and isotherm models of sulfonamide adsorption on BiFeO3/MXene are consistent with a pseudo-second-order kinetics and Langmuir model. BiFeO3/MXene had appreciable reusability after five adsorption–desorption cycles. Furthermore, BiFeO3/MXene is stable and retains its original properties upon desorption. The present work provides an effective method for eliminating sulfonamides from water by exploiting the excellent texture properties of BiFeO3/MXene.

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Section: Resultsmentioning

confidence: 99%

Effective Removal of Sulfonamides Using Recyclable MXene-Decorated Bismuth Ferrite Nanocomposites Prepared via Hydrothermal Method

Sanga

Wang

et al. 2023

Molecules

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“…Since the zero zeta potential for the FA/PMIDA-LDHs was 2.4, as presented in Figure 6c, the corresponding zeta potential changed from positive to negative when the pH was higher than 2.4. The uptake of Cu 2+ and that of aniline were greatly restricted in strongly acidic solutions with pH 2.0, and this could be attributed to the protonation of the acidic groups 37,41 in FA/ PMIDA-LDHs and the promoted electrostatic repulsion between the sorbent and Cu 2+ /−NH 3 + . Moreover, as depicted Note: K 1 -constant, min −1 ; K 2 -constant, g/mg/min; q e -equilibrium adsorption amount, mg/g.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…The C 1s spectrum could be divided into four components ∼284.8, 286.2, 288.0, and 289.2 eV. The first peak at a binding energy of ∼284.8 eV could be attributed to the C� C vibrations, while the other three peaks could be attributed to the carbon in C�O (∼286.2 eV) 41 and C�O (∼288.0 eV) and the π�π interactions of the benzene rings (∼289.2 eV). 44 After Cu 2+ adsorption, the quantity of C in the C�O group of FA/ PMIDA-LDHs decreased from 24.33 to 21.40%.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

A Sandwich Structure of Fulvic Acid and PMIDA-Modified LDHs for the Simultaneous Removal of Cu²⁺ and Aniline in Multicomponent Solutions

Wan

Wang

et al. 2023

Langmuir

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The coexistence of organic and inorganic pollutants in industrial wastewater has emerged as a concerning environmental issue worldwide due to the critical levels of biological toxicity of these pollutants. In this context, the present study proposes a sandwich structure of fulvic acid and PMIDA-modified LDHs (FA/PMIDA-LDHs) for the simultaneous removal of Cu2+ and aniline from wastewater. The specific structure was synthesized using a combination of coprecipitation and impregnation methods. Abundant benzene rings and oxygen-containing functional groups greatly increased the number of sites for the adsorption of both Cu2+ and aniline. The maximum adsorption capacity of Cu2+ and aniline in solution with initial pH 5.0 at 25 °C could reach 221.24 and 132.28 mg/g, respectively. Cu2+ could be chelated by the functional groups in the FA/PMIDA-LDHs structure, and a coupled reduction–complexation mechanism was proposed for this process. The uptake of aniline on FA/PMIDA-LDHs was demonstrated to be a result of the combination of coordination forces, hydrophobic effects, π–π interactions, and hydrogen bonds. In a multicomponent solution, FA/PMIDA-LDHs exhibited excellent salt tolerance of up to 1000 mg/L of Na+ or Ca2+. The effects of Fe3+, Ni2+, Cl–, Cr2O7 2–, SO4 2–, and H2PO4 – on the uptakes of Cu2+ and aniline were also investigated.

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“…The absorption peak at 2927 cm À1 corresponds to the C-H stretching vibration of saturated carbon. 39 The absorption peak at 1714 cm À1 corresponds to the CQO stretching vibration of the keto-carbonyl group. 40 The outgoing peak at 1580 cm À1 corresponds to the absorption peak of -NH 2 in the AM.…”

Section: (B) the Composite Hydrogel Mainlymentioning

confidence: 99%

Preparation of modified humic acid/TiO₂/P(AA-co-AM) nanocomposite hydrogels with enhanced dye adsorption and photocatalysis

Gong,

Sawut,

Simayi

et al. 2024

Soft Matter

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Preparation of high-capacity macroporous adsorbent using lignite-derived humic acid and its multifunctional binding chemistry for heavy metals in wastewater

Cited by 19 publications

References 38 publications

Effective Removal of Sulfonamides Using Recyclable MXene-Decorated Bismuth Ferrite Nanocomposites Prepared via Hydrothermal Method

Effective Removal of Sulfonamides Using Recyclable MXene-Decorated Bismuth Ferrite Nanocomposites Prepared via Hydrothermal Method

A Sandwich Structure of Fulvic Acid and PMIDA-Modified LDHs for the Simultaneous Removal of Cu²⁺ and Aniline in Multicomponent Solutions

Preparation of modified humic acid/TiO₂/P(AA-co-AM) nanocomposite hydrogels with enhanced dye adsorption and photocatalysis

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Preparation of high-capacity macroporous adsorbent using lignite-derived humic acid and its multifunctional binding chemistry for heavy metals in wastewater

Cited by 19 publications

References 38 publications

Effective Removal of Sulfonamides Using Recyclable MXene-Decorated Bismuth Ferrite Nanocomposites Prepared via Hydrothermal Method

Effective Removal of Sulfonamides Using Recyclable MXene-Decorated Bismuth Ferrite Nanocomposites Prepared via Hydrothermal Method

A Sandwich Structure of Fulvic Acid and PMIDA-Modified LDHs for the Simultaneous Removal of Cu2+ and Aniline in Multicomponent Solutions

Preparation of modified humic acid/TiO2/P(AA-co-AM) nanocomposite hydrogels with enhanced dye adsorption and photocatalysis

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Product

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A Sandwich Structure of Fulvic Acid and PMIDA-Modified LDHs for the Simultaneous Removal of Cu²⁺ and Aniline in Multicomponent Solutions

Preparation of modified humic acid/TiO₂/P(AA-co-AM) nanocomposite hydrogels with enhanced dye adsorption and photocatalysis