Dithiocarbamate-modified starch derivatives with high heavy metal adsorption performance

Xiang, Bin; Fan, Wen; Yi, Xiaowei; Wang, Zuohua; Gao, Feng; Li, Yijiu; Gu, Hongbo

doi:10.1016/j.carbpol.2015.08.065

Cited by 105 publications

(40 citation statements)

References 36 publications

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“…The results suggest that Cu can be well described by the Freundlich isotherm whereas both Ni and Zn are described by the Freundlich and Langmuir isotherms. Overall, the adsorption correlated best with the Freundlich isotherm indicating a multilayer adsorption in line with El‐Hamshary et al . who studied the chelation of heavy metals using poly‐grafted carboxymethylated starch.…”

Section: Resultssupporting

confidence: 81%

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Eco‐Friendly Synthesis of Hydrogels from Starch, Citric Acid, and Itaconic Acid: Swelling Capacity and Metal Chelation Properties

et al. 2020

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In this study, eco‐friendly superabsorbent hydrogels are prepared by the grafting and crosslinking reactions of itaconic acid and citric acid with starch, using potassium persulfate as the free radical initiator. The structure and morphology of the hydrogels are studied using Fourier transform infrared spectroscopy, scanning electron microscopy, and thermogravimetric analysis. The effect of the citric acid to starch ratio on the swelling properties is evaluated, and it is found that equal parts of citric acid and starch produced the highest swelling ratio of 188 g distilled water per g hydrogel. The hydrogels also exhibit pH‐dependent behavior, such that the maximum swelling ratio of 232 g/g is obtained at pH 8. Finally, the metal chelation properties of the hydrogel are tested in solutions of copper, nickel, and zinc, and the adsorption capacity followed the trend Cu > Ni > Zn based on the Freundlich parameter KF.

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Section: Resultssupporting

confidence: 81%

“…Although the K L suggests that the hydrogel capacity for adsorbing Cu (vs Ni and Zn) was much higher, all the metals were adsorbed on the starch hydrogel. Moreover, 1/ n , being related to the distribution of bonded ions on the surface of the starch hydrogel, was close to unity for all the metals indicating favorable adsorption …”

Section: Resultsmentioning

confidence: 80%

Eco‐Friendly Synthesis of Hydrogels from Starch, Citric Acid, and Itaconic Acid: Swelling Capacity and Metal Chelation Properties

et al. 2020

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“…Among these methods, adsorption is of great importance for wastewater treatment due to its high efficiency, exibility in design and operation, renewability and favorable selectivity. [11][12][13][14] It should be pointed out that the type of adsorbent plays a critical role in the adsorption process.…”

mentioning

confidence: 99%

Fast removal of Co(ii) from aqueous solution using porous carboxymethyl chitosan beads and its adsorption mechanism

2018

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Porous carboxymethyl chitosan (PCMC) beads were synthesized via ionic coacervation/chemical crosslinking, using polyethylene glycol (PEG) as a porogen and calcium chloride and glutaraldehyde as physical and chemical cross-linkers. The as-synthesized PCMC beads were characterized using SEM, EDS, BET, TGA, FTIR and XPS analysis and then tested for the removal of Co(II) from aqueous solution. The effects of the initial pH, Co(II) concentration and temperature were investigated. It was found that the adsorption equilibrium is reached within 6 h and the maximum adsorption capacity is 46.25 mg g À1 .In addition, the kinetics and equilibrium data are well described by pseudo-second-order kinetics and the Langmuir isotherm model. Moreover, the desorption and re-adsorption performance was also studied, and the results revealed that the prepared new adsorbent still showed good adsorption performance after five cycles of regeneration. Finally, the adsorption mechanism, including chemical and physical adsorption, was proposed on the basis of the microstructure analysis, adsorption kinetics and isotherm results, and chemical adsorption was found to be the main adsorption mechanism during the process of the removal of Co(II).

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“…As a result of rapid and growing industrialization, heavy metals like Pb(II), Cd(II), Cr(VI), Hg(II), Cu(II) and As(III) are continuously discharged into the environment in excessive amounts causing major environmental pollution and global concern (Xiang et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Surfactant mediated synthesis of poly(acrylic acid) grafted xanthan gum and its efficient role in adsorption of soluble inorganic mercury from water

Pal

Majumder

Bandyopadhyay

2016

Carbohydrate Polymers

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Dithiocarbamate-modified starch derivatives with high heavy metal adsorption performance

Cited by 105 publications

References 36 publications

Eco‐Friendly Synthesis of Hydrogels from Starch, Citric Acid, and Itaconic Acid: Swelling Capacity and Metal Chelation Properties

Eco‐Friendly Synthesis of Hydrogels from Starch, Citric Acid, and Itaconic Acid: Swelling Capacity and Metal Chelation Properties

Fast removal of Co(ii) from aqueous solution using porous carboxymethyl chitosan beads and its adsorption mechanism

Surfactant mediated synthesis of poly(acrylic acid) grafted xanthan gum and its efficient role in adsorption of soluble inorganic mercury from water

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