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Electrodeposition 1

Electroplating wastewater 1

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actual wastewater 1

adsorption 1

chelating ligands 1

chromium removal 1

electroplating 1

heavy metals 1

hydrogen bonding 1

laser surface cladding 1

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plating industry 1

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remanufacturing technology 1

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Hyperbranched magnetic polymer: highly efficient removal of Cr(VI) and application in electroplating

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10,   Pages 1568-1580 doi: 10.1007/s11705-023-2303-2

Abstract: By using a two-step hydrothermal method and trithiocyanuric acid (TTCA), 2,4,6-trihydrazino-1,3,5-triazine (THT), and Fe3O4 as raw materials, a spherical magnetic adsorbent polymer (TTCA/THT@Fe3O4) was synthesized to achieve the efficient removal of Cr(VI) from wastewater. Under optimal adsorption conditions, the maximum adsorption capacity of TTCA/THT@Fe3O4 for Cr(VI) can reach 1340 mg∙g‒1. Notably, the removal efficiency can approach 98.9%, even at the lower concentration of 20 mg∙L‒1 Cr(VI). For actual wastewater containing Cr(VI), the Cr(VI) concentration was reduced from 25.8 to 0.4 mg∙L‒1, a remarkable 20% lower than the current industry discharge standard value. A mechanism for the high adsorption performance of Cr(VI) on TTCA/THT@Fe3O4 was investigated using Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, and density functional theory. It can be plausibly attributed to the formation of Cr/N and Cr/S coordination bonds. Additionally, surface electrostatic adsorption, reduction effects, and the spherical polymer structure increase the contact area with Cr(VI), maximizing adsorption. The synergistic effect of adsorption and reduction enhances the adsorption performance of TTCA/THT@Fe3O4 for Cr(VI) and total chromium in water. The resultant polymer has a simple preparation process, excellent adsorption performance, easy magnetic separation, and promising application for actual wastewater.

Keywords: magnetic polymer     chromium removal     hydrogen bonding     recyclability     actual wastewater    

Recovery of Ni(II) from real electroplating wastewater using fixed-bed resin adsorption and subsequent

Tong Li, Ke Xiao, Bo Yang, Guilong Peng, Fenglei Liu, Liyan Tao, Siyuan Chen, Haoran Wei, Gang Yu, Shubo Deng

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 6, doi: 10.1007/s11783-019-1175-7

Abstract: . • Treated wastewater can meet the Electroplating Pollutant Discharge Standard. • The spent resin isEffective recovery of high-value heavy metals from electroplating wastewater is of great significance, but recovering nickel ions from real electroplating wastewater as nickel sheet has not been reported

Keywords: Nickel removal     Ion exchange     Electroplating wastewater     Regeneration     Electrodeposition    

Efficient removal of heavy metals from electroplating wastewater using polymer ligands

Md. Lutfor RAHMAN,Shaheen M. SARKAR,Mashitah Mohd YUSOFF

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 2,   Pages 352-361 doi: 10.1007/s11783-015-0783-0

Abstract: The wastewater from electroplating plants used in this study, having chromium, zinc, nickel, copper and

Keywords: heavy metals     adsorption     wastewater     chelating ligands     plating industry    

The Application and the Prospect of Remanufacturing Technologies in the Metallurgical Industry

Jie Xiong,Jian-cheng Fan,Jv Yuan

Frontiers of Engineering Management 2016, Volume 3, Issue 2,   Pages 165-170 doi: 10.15302/J-FEM-2016023

Abstract: This paper introduces remanufacturing technologies, including electroplating, overlaying welding, thermal

Keywords: remanufacturing technology     electroplating     overlaying welding     thermal spraying     laser surface cladding    

Title Author Date Type Operation

Hyperbranched magnetic polymer: highly efficient removal of Cr(VI) and application in electroplating

Journal Article

Recovery of Ni(II) from real electroplating wastewater using fixed-bed resin adsorption and subsequent

Tong Li, Ke Xiao, Bo Yang, Guilong Peng, Fenglei Liu, Liyan Tao, Siyuan Chen, Haoran Wei, Gang Yu, Shubo Deng

Journal Article

Efficient removal of heavy metals from electroplating wastewater using polymer ligands

Md. Lutfor RAHMAN,Shaheen M. SARKAR,Mashitah Mohd YUSOFF

Journal Article

The Application and the Prospect of Remanufacturing Technologies in the Metallurgical Industry

Jie Xiong,Jian-cheng Fan,Jv Yuan

Journal Article