An integrated process for removal and recovery of Cr(VI) from electroplating wastewater by ion exchange and reduction–precipitation based on a silica-supported pyridine resin

Ye, Zhenxiong; Yin, Xiangbiao; Chen, Lifeng; He, Xinyi; Lin, Ziming; Liu, Caocong; Ning, Shunyan; Wang, Xinpeng; Wei, Yuezhou

doi:10.1016/j.jclepro.2019.117631

Cited by 127 publications

(23 citation statements)

References 31 publications

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“…The biosorbent suffered a friendly loss of ,5% in chromium ions recovery efficiency till 3 recycle runs when washed with NaOH solvant. Desorption of Cr (VI) from the PSh biosorbent surface at strong basic pH environment can occur due to the exchange of CrO 4 2À (the dominant species of Cr (VI) in alkaline solution) with hydroxyl ions (Ye et al 2019). Daneshvar et al was found similar results studying Cr (VI) desorption by NaOH solution at pH 12 (Daneshvar et al 2019).…”

Section: Psh Reusability and Cr (Vi) Recoverymentioning

confidence: 99%

Modelling and optimization of hexavalent chromium removal from aqueous solution by adsorption on low-cost agricultural waste biomass using response surface methodological approach

Rzig

Guesmi

Hamrouni

2021

Water Science and Technology

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In this study, response surface methodology (RSM) approach using central composite design (CCD) was investigated to develop mathematical model and to optimize the effects of pH, adsorbent amount and temperature related to the hexavalent chromium removal by biosorption on peanut shells (PSh). The highest removal percentage of 30.28% was found by the predicted model under the optimum conditions (pH of 2.11, 0.73 g of PSh and 37.2 °C) for a 100 mg/L initial Cr (VI) concentration, which was very near to the experimental value (29.92%). The PSh was characterized by SEM, EDX, FTIR, BET, XRD analysis. Moreover, Langmuir isotherm fitted well (R2 = 0.992) with the experimental data, and the maximum adsorption capacity was discovered to be 2.48 and 3.49 mg/g respectively at 25 and 45 °C. Kinetic data was well foreseen by pseudo second order. Thermodynamic study depicted that biosorption of Cr(VI) onto PSh was spontaneous and endothermic. Regeneration of the PSh using NaOH showed a loss <5% in the Cr (VI) removal efficiency till three recycle runs. In summary, the Cr (VI) removal onto economic, sensitive and selective biosorbent (PSh) optimized using CCD to study biosorption behaviors.

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Section: Psh Reusability and Cr (Vi) Recoverymentioning

confidence: 99%

Modelling and optimization of hexavalent chromium removal from aqueous solution by adsorption on low-cost agricultural waste biomass using response surface methodological approach

Rzig

Guesmi

Hamrouni

2021

Water Science and Technology

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“…The distribution of lead species was calculated by the PHREEQC software developed by the United States Geological Survey [38]. The thermodynamic data in the database PHREEQC.dat were employed and listed in Table S1.…”

Section: The Calculation Of Lead Speciesmentioning

confidence: 99%

Fast recovery of lead from hydrochloric acid via a novel silica-supported anion exchange resin for the determination of 210Pb in environmental samples

Chen

Zhang

He³

et al. 2020

Chemical Engineering Journal

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“…The highest adsorption capacity by CPM-97-Fe was 831 mg/g of Congo Red. Ye, Yin, et al (2019) developed an integrated process to achieve Cr(VI)'s efficient removal and high-quality recovery with steps as follows: adsorption by silica-supported pyridine ion exchange resin (SiPyR-N4), reductive desorption, and precipitation recovery. SiPyR-N4 had a moderate adsorption capability but showed a faster rate when compared with two commercially available anion-exchange resins (D201 and IRA-400).…”

Section: Ion Exchangementioning

confidence: 99%

Physico‐chemical processes

Yu¹,

Yao²,

Pan³

et al. 2020

Water Environment Research

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By summarizing 187 relevant research articles published in 2019, the review is focused on the research progress of physicochemical processes for wastewater treatment. This review divides into two sections, physical processes and chemical processes. The physical processes section includes three subsections , that is, adsorption, granular filtration, and dissolved air flotation, whereas the chemical processes section has five subsections , that is, coagulation/flocculation, advanced oxidation processes, electrochemical, capacitive deionization, and ion exchange.

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An integrated process for removal and recovery of Cr(VI) from electroplating wastewater by ion exchange and reduction–precipitation based on a silica-supported pyridine resin

Cited by 127 publications

References 31 publications

Modelling and optimization of hexavalent chromium removal from aqueous solution by adsorption on low-cost agricultural waste biomass using response surface methodological approach

Modelling and optimization of hexavalent chromium removal from aqueous solution by adsorption on low-cost agricultural waste biomass using response surface methodological approach

Fast recovery of lead from hydrochloric acid via a novel silica-supported anion exchange resin for the determination of 210Pb in environmental samples

Physico‐chemical processes

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