Selective separation of Cd(II), Zn(II) and Pb(II) from Pb-Zn smelter wastewater via shear induced dissociation coupling with ultrafiltration

Le, Huishang; Qiu, Yunren

doi:10.1007/s11814-020-0509-2

Cited by 6 publications

(1 citation statement)

References 41 publications

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“…In this case, the polymer-to-metal ratio was very high-25. The same complexing agent and similar separation conditions were applied in the work of Le and Qiu [33] to treat wastewater from heavy metals: cadmium, zinc, and lead. In this case, the process conditions were pH = 7, a polysulfone membrane with MWCO of 20 kDa, and a ratio of polyacrylate to metal ions of 10.…”

Section: Complex Ultrafiltrationmentioning

confidence: 99%

Membrane Separation in the Nickel-Contaminated Wastewater Treatment

Lech,

Gala,

Helińska

et al. 2023

Waste

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Nowadays, electroplating plants are factories that use huge amounts of water in the coating process of anti-corrosion layers. They are required to decrease the heavy metal content to very low values before releasing the post-process water into the aquatic environment. They very often decrease their content using coagulation combined with flocculation. However, these processes are often not effective enough, and the concentration of a given metal does not reach a satisfactory low level. The use of membrane techniques to purify this type of wastewater leads to a reduction in the content of heavy metals, including nickel, to zero values. This allows for not only reducing the negative impact on the aquatic environment but also a step toward more conscious management of water resources—namely, the reuse of water in the electroplating process. The following review not only describes the membrane methods used to treat the wastewater considered, e.g., nanofiltration, ultrafiltration, or electrodialysis, but also shows the directions of development of these processes.

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Section: Complex Ultrafiltrationmentioning

confidence: 99%

Membrane Separation in the Nickel-Contaminated Wastewater Treatment

Lech,

Gala,

Helińska

et al. 2023

Waste

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Selective Pb2+ removal and electrochemical regeneration of fresh and recycled FeOOH

et al. 2023

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Heavy metal pollution is a key environmental problem. Selectively extracting heavy metals could accomplish water purification and resource recycling simultaneously. Adsorption is a promising approach with a facile process, adaptability for the broad concentration of feed water, and high selectivity. However, the adsorption method faces challenges in synthesizing high-performance sorbents and regenerating adsorbents effectively. FeOOH is an environmentally friendly sorbent with low-cost production on a large scale. Nevertheless, the selectivity behavior and regeneration of FeOOH are seldom studied. Therefore, we investigated the selectivity of FeOOH in a mixed solution of Co2+, Ni2+, and Pb2+ and proposed to enhance the capacity of FeOOH and regenerate it by using external charges. Without charge, the FeOOH electrode shows a Pb2+ uptake capacity of 20 mg/g. After applying a voltage of −0.2/+0.8 V, the uptake capacity increases to a maximum of 42 mg/g and the desorption ratio is 70%–80%. In 35 cycles, FeOOH shows a superior selectivity towards Pb2+ compared with Co2+ and Ni2+, with a purity of 97% ± 3% in the extracts. The high selectivity is attributed to the lower activation energy for Pb2+ sorption. The capacity retentions at the 5th and the 35th cycles are ca. 80% and ca. 50%, respectively, comparable to the chemical regeneration method. With industrially exhausted granular ferric hydroxide as the electrode material, the system exhibits a Pb2+ uptake capacity of 37.4 mg/g with high selectivity. Our work demonstrates the feasibility of regenerating FeOOH by charge and provides a new approach for recycling and upcycling FeOOH sorbent.

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Separation of La(III), Ce(IV) and Ca(II) from bastnaesite using acidic phosphonic chitosan and rotating disk membrane

et al. 2024

Journal of Rare Earths

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Selective separation of Cd(II), Zn(II) and Pb(II) from Pb-Zn smelter wastewater via shear induced dissociation coupling with ultrafiltration

Cited by 6 publications

References 41 publications

Membrane Separation in the Nickel-Contaminated Wastewater Treatment

Membrane Separation in the Nickel-Contaminated Wastewater Treatment

Selective Pb2+ removal and electrochemical regeneration of fresh and recycled FeOOH

Separation of La(III), Ce(IV) and Ca(II) from bastnaesite using acidic phosphonic chitosan and rotating disk membrane

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