Adsorption of copper ion from solution by polyethylenimine modified wheat straw

Dong, Jiajia; Du, Yangyang; Duyu, Rusheng; Shang, Yu; Zhang, Shusheng; Han, Runping

doi:10.1016/j.biteb.2019.02.011

Cited by 83 publications

(21 citation statements)

References 39 publications

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“…Water pollution caused by heavy metal ion poses a significant threat to environment and human health due to its non-degradability and toxicity [1,2]. Cu 2+ ion usually exists in wastewaters of many industries including mining, metallurgical, printed circuits, pipe corrosion, and metal plating industries, etc.…”

Section: Introductionmentioning

confidence: 99%

Efficient Removal of Copper Ion from Wastewater Using a Stable Chitosan Gel Material

et al. 2019

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: Gel adsorption is an efficient method for the removal of metal ion. In the present study, a functional chitosan gel material (FCG) was synthesized successfully, and its structure was detected by different physicochemical techniques. The as-prepared FCG was stable in acid and alkaline media. The as-prepared material showed excellent adsorption properties for the capture of Cu2+ ion from aqueous solution. The maximum adsorption capacity for the FCG was 76.4 mg/g for Cu2+ ion (293 K). The kinetic adsorption data fits the Langmuir isotherm, and experimental isotherm data follows the pseudo-second-order kinetic model well, suggesting that it is a monolayer and the rate-limiting step is the physical adsorption. The separation factor (RL) for Langmuir and the 1/n value for Freundlich isotherm show that the Cu2+ ion is favorably adsorbed by FCG. The negative values of enthalpy (ΔH°) and Gibbs free energy (ΔG°) indicate that the adsorption process are exothermic and spontaneous in nature. Fourier transform infrared (FTIR) spectroscopy and x-ray photoelectron spectroscopy (XPS) analysis of FCG before and after adsorption further reveal that the mechanism of Cu2+ ion adsorption. Further desorption and reuse experiments show that FCG still retains 96% of the original adsorption following the fifth adsorption–desorption cycle. All these results indicate that FCG is a promising recyclable adsorbent for the removal of Cu2+ ion from aqueous solution.

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Section: Introductionmentioning

confidence: 99%

Efficient Removal of Copper Ion from Wastewater Using a Stable Chitosan Gel Material

et al. 2019

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“…Figure S2. Effect of different salt ions on the adsorption capacity of FSAH for to adsorb Pb 2+ (a), Cd 2+ (b), Cu 2+ (c), MB (d), MG (e), and CV (f) [ 50 , 51 , 52 , 53 , 54 ]. Table S5.…”

mentioning

confidence: 99%

Highly Efficient Adsorption of Heavy Metals and Cationic Dyes by Smart Functionalized Sodium Alginate Hydrogels

Shi

Xie

Mo³

et al. 2022

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In this paper, functionalized sodium alginate hydrogel (FSAH) was prepared to efficiently adsorb heavy metals and dyes. Hydrazide-functionalized sodium alginate (SA) prepared hydrazone groups to selectively capture heavy metals (Pb2+, Cd2+, and Cu2+), and another functional group (dopamine grafting), serves as sites for adsorption methylene blue (MB), malachite green (MG), crystal violet (CV). Thermodynamic parameters of adsorption indicated that the adsorption process is endothermic and spontaneous. The heavy metals adsorption by FSAH was physical adsorption mainly due to ΔHθ < 40 kJ/mol, and the adsorption of cationic dyes fitted with the Langmuir models, which indicated that the monolayer adsorption is dominated by hydrogen bonds, electrostatic interactions, and π-π interactions. Moreover, the adsorption efficiency maintained above 70% after five adsorption-desorption cycles. To sum up, FSAH has great application prospect.

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“…the polypyrrole-based activated carbon, sawdust and rice husks were used as adsorbents for the removal of Pb, and the maximum adsorption capacity occurring at pH = 5-6.5 [27][28][29]. Additionally, the removal of copper took place at an initial pH value close to 6 when bottom ash of expired drug incineration, and shells of lentil, wheat and rice were used as adsorbents [30][31][32]. Figure 3 displays the influence of SSA dosage on the adsorption capacity and on the removal rate of Pb (II) and Cu (II).…”

Section: Effect Of Adsorbent Dosagementioning

confidence: 99%

Using Sewage Sludge Ash as an Efficient Adsorbent for Pb (II) and Cu (II) in Single and Binary Systems

et al. 2020

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Incineration of sewage sludge produces every year huge amounts of sewage sludge ash. Due to its porosity and composition, sewage sludge ash can be used as an adsorbent for heavy metal ions removal. The present paper discusses the efficiency and feasibility of its use as an adsorbent for Pb (II) and Cu (II) removal in single and binary systems. Sewage sludge ash dosage, pH influence, equilibrium and kinetic studies were examined. The results show that sewage sludge ash is an effective and environmentally friendly adsorbent. The maximum adsorption capacity was 25.0 mg/g for Pb (II) and 7.5 mg/g for Cu (II). The presence of the competitive metal led to lower adsorption rate. The study concludes that sewage sludge ash is a promising adsorbent for Pb (II) and Cu (II) removal from wastewater presenting both economic and environmental benefits.

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Adsorption of copper ion from solution by polyethylenimine modified wheat straw

Cited by 83 publications

References 39 publications

Efficient Removal of Copper Ion from Wastewater Using a Stable Chitosan Gel Material

Efficient Removal of Copper Ion from Wastewater Using a Stable Chitosan Gel Material

Highly Efficient Adsorption of Heavy Metals and Cationic Dyes by Smart Functionalized Sodium Alginate Hydrogels

Using Sewage Sludge Ash as an Efficient Adsorbent for Pb (II) and Cu (II) in Single and Binary Systems

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