Recovery of ultra-trace palladium using chitosan and its sulphur-containing derivative in HCl medium

Xie, Qiaoling; Lin, Tao; Chen, Fuming; Wang, Dandan; Yang, Bo

doi:10.1016/j.hydromet.2018.04.007

Cited by 16 publications

(1 citation statement)

References 31 publications

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“…Chitosan (deacetylation degree 80%), chloroacetic acid (ClCH 2 COOH, 98%), carbon disulphide (CS 2 , 99%), acetic acid (CH 3 COOH, 99%), ethanol absolute (CH 3 CH 2 OH, 99.9%), acetone (CH 3 COCH 3 , 99%) and other reagents were purchased from Weifang Dongxing Chitosan Factory, China, Shandong Xiya Chemical Co., LTD, China, Aladdin Industrial Corporation and Tianjin Chemical Reagent Factory, China. Additionally, the water-soluble derivative of chitosan was synthesized by chitosan, CS 2 , chloroacetic acid, ethanol absolute, acetic acid and acetone, as described by Xie et al (2018). The dissolution reagents such as nitric acid (98%), sulphuric acid (98%), hydrochloric acid (36-38%) and sodium hydroxide (99%) were obtained from Tianjin Chemical Reagent Factory, China.…”

Section: Reagents and Apparatusmentioning

confidence: 99%

Selective chelating precipitation of palladium metal from electroplating wastewater using chitosan and its derivative

Xie¹,

Liang

Lin

et al. 2020

Adsorption Science & Technology

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A study on selective chelating precipitation of palladium metal from real electroplating wastewater using chitosan and its water-soluble derivative was conducted. The pH parameter, the concentrations of chitosan and its water-soluble derivative and the chelating precipitation time were experimentally investigated, and the optimum conditions were determined. The results revealed that both chitosan and its water-soluble derivative acted as chelating precipitation agents. Rapid chelating precipitation occurred when chitosan was added to real electroplating wastewater containing the chitosan derivative, thereby improving removal efficiency of palladium in different forms up to 95% under the optimum condition of 0.2 g/L chitosan and 0.16 mg/L derivative at pH 2.5. Then, dissolution experiments showed that chelating precipitation products could be dissolved in aqua regia. Additionally, selective chelating precipitation of palladium by chitosan and its derivative was characterized using X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy. Thus, it can be concluded that the combined utilization of chitosan and its water-soluble derivative is a promising approach method for the removal of different forms of palladium from real electroplating wastewater.

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Section: Reagents and Apparatusmentioning

confidence: 99%

Selective chelating precipitation of palladium metal from electroplating wastewater using chitosan and its derivative

Xie¹,

Liang

Lin

et al. 2020

Adsorption Science & Technology

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View full text Add to dashboard Cite

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Chitosan for Direct Bioflocculation Processes

Lichtfouse

Morin‐Crini

Fourmentin

et al. 2019

Sustainable Agriculture Reviews

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Coagulation-flocculation is a major process allowing to remove suspended particles from municipal and industrial wastewater. This process commonly involves metal salts as coagulants and synthetic organic polymers as flocculants. Although those chemicals are cheap, efficient, available and easy to use, they have drawbacks such water pollution by metals, and production of large amounts of toxic sludges. Therefore, safer biocoagulants and bioflocculants of biological origin are currently developed. For instance, the direct flocculation process involves water-soluble, ionic organic polymers, and thus do not need the addition of metal

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Effect of the degree of sulfoethylation of polyethylenimine on the selectivity of sorption of palladium(ii) from binary solutions

et al. 2021

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Recovery of ultra-trace palladium using chitosan and its sulphur-containing derivative in HCl medium

Cited by 16 publications

References 31 publications

Selective chelating precipitation of palladium metal from electroplating wastewater using chitosan and its derivative

Selective chelating precipitation of palladium metal from electroplating wastewater using chitosan and its derivative

Chitosan for Direct Bioflocculation Processes

Effect of the degree of sulfoethylation of polyethylenimine on the selectivity of sorption of palladium(ii) from binary solutions

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