Chemical precipitation enabled UF and MF filtration for lead removal

Xu, Zitong; Gu, Siwei; Rana, Dipak; Matsuura, Takeshi; Lan, Christopher Q.

doi:10.1016/j.jwpe.2021.101987

Cited by 62 publications

(13 citation statements)

References 36 publications

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“…It also has a crucial impact on gastrointestinal and hematopoietic systems and causes renal abnormalities. [16][17][18] Up till now, several purication methods have provided helpful remedies, such as precipitation, 19 membrane ltration, 20 activated sludge, 21 ion exchange, 22 and adsorption. 23 Among these techniques, adsorption has been widely applied as it is simple, low-toxicity, cost-effective, biocompatible, and recyclable.…”

Section: Introductionmentioning

confidence: 99%

The effective removal of Ni²⁺, Cd²⁺, and Pb²⁺ from aqueous solution by adenine-based nano-adsorbent

et al. 2023

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Section: Introductionmentioning

confidence: 99%

The effective removal of Ni²⁺, Cd²⁺, and Pb²⁺ from aqueous solution by adenine-based nano-adsorbent

et al. 2023

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“…At present, there are many technologies for the removal of lead ions from water, including chemical precipitation, electrolysis, solvent extraction, ion exchange, and adsorption. , Among these methods, chemical precipitation and electrolysis have low selectivity and will produce large amounts of sludge, which cannot be extensively applied. Solvent extraction and ion exchange are costly and will cause secondary pollution.…”

Section: Introductionmentioning

confidence: 99%

Design of Zr-MOFs by Introducing Multiple Ligands for Efficient and Selective Capturing of Pb(II) from Aqueous Solutions

Liu

et al. 2023

ACS Appl. Mater. Interfaces

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The existence of lead ions seriously affects the quality of many metal products in metallurgical enterprises. Currently, the various methods of lead-ion removal tried by researchers will affect valuable metals in the removal process, thus resulting in low economic efficiency. In this study, a novel metal–organic framework adsorbent (UiO-FHD) which efficiently and selectively captures lead ions is developed by introducing multiple ligands. The maximum adsorption capacity of lead ions is 433.15 mg/g at pH 5. The adsorption process accords with the pseudo-second-order kinetic and the Langmuir isotherm models at room temperature. Thermodynamic experiments indicate that the removal of Pb(II) is facilitated by appropriate temperature reduction. The performance tests indicate that UiO-FHD maintains a high removal rate of 90.35% for Pb(II) after four consecutive adsorption–desorption cycles. The distribution coefficient of lead ions (26.7 L/g) shows that UiO-FHD has excellent selective adsorption for lead ions. It is revealed that the chelation of the sulfhydryl groups and the electrostatic interaction of the hydroxyl groups are the dominant factors to improve the removal rate of Pb(II) by density functional theory calculations. This study clarifies the value of self-designed novel organic ligands in metal–organic framework materials that selectively capture heavy-metal ions.

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“…The combined purification process combines chemical precipitation [15], electrolysis, and other techniques, which can generally obtain better results, but such combined methods are more complicated, inconvenient to operate, and more expensive.…”

Section: Introductionmentioning

confidence: 99%

Extraction Technology for Manganese Sulfate Solution Purification

Xie

Jin

2023

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Manganese sulfate is an important base manganese salt; nearly 80% of the world's manganese products are produced using manganese sulfate or manganese sulfate solution. Furthermore, manganese sulfate has many applications in industry and agriculture; thus, manganese sulfate solution impurity removal technology is important. This study aims to remove impurities from manganese sulfate solution-using complex low-grade manganese ore and manganese-rich fumes after pressure acid leaching to obtain a manganese sulfate solution, which is then purified through iron removal by oxidation neutralization; finally, the purified liquid is treated using extraction-back-extraction. We investigated the effects of various extraction parameters on the extraction rate of manganese, as well as the effects of various back-extraction parameters on the manganese back-extraction rate and manganese ion concentration in the back-extraction solution, and studied the extraction-back-extraction process. We found that the extraction and back-extraction rates of manganese could reach 95% and 96.9%, respectively, under optimal conditions..

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Chemical precipitation enabled UF and MF filtration for lead removal

Cited by 62 publications

References 36 publications

The effective removal of Ni²⁺, Cd²⁺, and Pb²⁺ from aqueous solution by adenine-based nano-adsorbent

The effective removal of Ni²⁺, Cd²⁺, and Pb²⁺ from aqueous solution by adenine-based nano-adsorbent

Design of Zr-MOFs by Introducing Multiple Ligands for Efficient and Selective Capturing of Pb(II) from Aqueous Solutions

Extraction Technology for Manganese Sulfate Solution Purification

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Chemical precipitation enabled UF and MF filtration for lead removal

Cited by 62 publications

References 36 publications

The effective removal of Ni2+, Cd2+, and Pb2+ from aqueous solution by adenine-based nano-adsorbent

The effective removal of Ni2+, Cd2+, and Pb2+ from aqueous solution by adenine-based nano-adsorbent

Design of Zr-MOFs by Introducing Multiple Ligands for Efficient and Selective Capturing of Pb(II) from Aqueous Solutions

Extraction Technology for Manganese Sulfate Solution Purification

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Product

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The effective removal of Ni²⁺, Cd²⁺, and Pb²⁺ from aqueous solution by adenine-based nano-adsorbent

The effective removal of Ni²⁺, Cd²⁺, and Pb²⁺ from aqueous solution by adenine-based nano-adsorbent