Rapid preparation of adsorbent based on mussel inspired chemistry and simultaneous removal of heavy metal ions in water

Wang, Huicai; Wang, Zhenwen; Yue, Ruirui; Gao, Feng; Ren, Ruili; Wei, Junfu; Wang, Xiaolei; Kong, Zhiyun

doi:10.1016/j.cej.2019.123107

Cited by 54 publications

(19 citation statements)

References 63 publications

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“…Among them, the adsorption experimental data of MB, ST and Cu(II) were most consistent with the PSO kinetic model, all the R 2 > 0.999, and the calculated value q e were closer to the experimental value, indicating that the adsorption process of PS-MA for the three substances was more consistent with chemical adsorption. [45][46][47] In addition, according to the fitting results of the internal diffusion model in Figure 9b,d and Table 3, the adsorption process could be divided into three stages, indicating that the adsorption process is controlled by multi-step mechanism, and the boundary layer diffusion may have certain effects on the adsorption process. 48 The change of removal rate with time was shown in Figure S9, the removal rate showed a rising trend within 0$60 min, and then reached adsorption equilibrium, indicating that 60 min was the best contact time.…”

Section: Adsorption Kineticsmentioning

confidence: 99%

Converting waste polystyrene foam into new value‐added materials: A large‐capacity scavenger to remove cationic dyes and heavy metals

Hao

Xie

et al. 2021

J of Applied Polymer Sci

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Waste white foam, toxic dyes, and metal ions are difficult to degrade in the ecological environment, posing a serious threat to human health and natural beauty, it is of great significance to design a functional material to jointly solve these problems. This study provided a facile approach to convert waste polystyrene foam into a new acid anhydride modified polystyrene adsorbent (PS-MA) for the dyes and heavy metals removal from aqueous solution. The as-obtained absorbent was characterized by Fourier transform infrared spectroscopy, thermogravimetry, scanning electron microscopy, energy dispersive spectroscopy, Brunauer Emmett Teller method, and X-ray photoelectron spectroscopy. Influencing factors are including, pH, dye concentration, contact time and temperature on the adsorption of methylene blue (MB), safranine T (ST), and Cu(II) were systematically studied. Boehm titration showed that the content of surface carboxyl groups reached 4.53 mmol/g. The maximum adsorption capacity had reached 1405.37 mg/g for MB, 2269.33 mg/g for ST, 65.03 mg/g for Cu(II). Moreover, the kinetic data were in good agreement with the pseudo-second-order model and closed to adsorption equilibrium at 20 min. After five times of recycling experiments and the application of mixed dye wastewater with salinity, PS-MA showed excellent stability and removal ability. Abundant efforts revealed a broad application prospect of PS-MA materials in water remediation.

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Section: Adsorption Kineticsmentioning

confidence: 99%

Converting waste polystyrene foam into new value‐added materials: A large‐capacity scavenger to remove cationic dyes and heavy metals

Hao

Xie

et al. 2021

J of Applied Polymer Sci

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“…The adsorption process was the formation of a complex structure of Cu 2+ with the amino group on CS and the hydroxyl group on β‐CD, which indicated that the adsorption process was controlled by chemical reaction rather than diffusion. Figure 9e compared the Cu 2+ removal rate of the knitted tube reinforced CS/β‐CD composite ultrafiltration membrane with other adsorbents reported in the literatures 35–42 . The results showed that the knitted tube reinforced CS/β‐CD composite ultrafiltration membrane had excellent removal rate for Cu 2+ (97%).…”

Section: Resultsmentioning

confidence: 84%

“…Figure 9e compared the Cu 2+ removal rate of the knitted tube reinforced CS/β-CD composite ultrafiltration membrane with other adsorbents reported in the literatures. [35][36][37][38][39][40][41][42] The results showed that the knitted tube reinforced CS/β-CD composite ultrafiltration membrane had excellent removal rate for Cu 2+ (97%). Compared with most reported adsorbents, the knitted tube reinforced CS/β-CD composite ultrafiltration membrane has great practical application potential in removing Cu 2+ from wastewater.…”

Section: Adsorption Kinetics Of the Cs/β-cd Composite Membranementioning

confidence: 96%

Knitted tube reinforced chitosan/β‐cyclodextrin composite ultrafiltration membrane for removing copper ions from water

Tang

et al. 2021

J of Applied Polymer Sci

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Industrial development has brought about serious water pollution problems, and the removal of heavy metals from water to obtain clean water is essential for human survival. Therefore, in this study, a knitted tube reinforced chitosan (CS)/β‐cyclodextrin (CD) composite ultrafiltration membrane was prepared for the removal of Cu2+ from water by a non‐solvent induced phase separation method, and the membrane forming property of CS was improved by using knitted tubes. The removal of Cu2+ by the composite ultrafiltration membrane followed the Langmuir isothermal model and the pseudo‐second‐order kinetic equation, mainly through the complexation between the amino group on CS and the hydroxyl group on β‐CD and Cu2+. Under static conditions, the removal rate of the prepared ultrafiltration membrane for Cu2+ was 97%, and the removal rate increased with the increase of pH and decreased with the increase of temperature. The removal of Cu2+ by the ultrafiltration membrane during filtration was 100% and the regeneration rate was over 95%. This study provided a practical basis for the separation membrane preparation of CS and provided a perspective for the removal of heavy metals by separation membranes.

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“… 42 In the case of lead, Pb(OH) 2 precipitation began to form at pH > 6.0. 43 Therefore, the solution pH value was set at 5.0 for further adsorption experiments.…”

Section: Resultsmentioning

confidence: 99%

Efficient and selective removal of Pb(ii) from aqueous solution by a thioether-functionalized lignin-based magnetic adsorbent

et al. 2022

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Rapid preparation of adsorbent based on mussel inspired chemistry and simultaneous removal of heavy metal ions in water

Cited by 54 publications

References 63 publications

Converting waste polystyrene foam into new value‐added materials: A large‐capacity scavenger to remove cationic dyes and heavy metals

Converting waste polystyrene foam into new value‐added materials: A large‐capacity scavenger to remove cationic dyes and heavy metals

Knitted tube reinforced chitosan/β‐cyclodextrin composite ultrafiltration membrane for removing copper ions from water

Efficient and selective removal of Pb(ii) from aqueous solution by a thioether-functionalized lignin-based magnetic adsorbent

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