Efficient removal of high-concentration copper ions from wastewater via 2D g-C3N4 photocatalytic membrane filtration

Mulungulungu, Germain Akonkwa; Mao, Tingting; Han, Kai

doi:10.1016/j.colsurfa.2021.126714

Cited by 32 publications

(8 citation statements)

References 37 publications

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“…69 6 Water purification membranes nanosheets which was used to remove Cu ions from water by filtration and photocatalysis methods. 70 The hydrophilicity of the membrane increased when exposed to light treatment as the contact angle decreased from approximately 73 to 451. The light-treated photocatalytic membrane after 15 h of filtration exhibited a water permeability of 48.82 L m À2 h À1 bar À1 and a rejection rate of 98.03% for a copper ion concentration of 2500 mg L À1 , which is a better performance compared with commercial membranes.…”

Section: Storage Energy Membranesmentioning

confidence: 99%

2D materials towards energy conversion processes in nanofluidics

Acosta,

Ojeda-Galván,

Quintana

2023

Phys. Chem. Chem. Phys.

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Section: Storage Energy Membranesmentioning

confidence: 99%

2D materials towards energy conversion processes in nanofluidics

Acosta,

Ojeda-Galván,

Quintana

2023

Phys. Chem. Chem. Phys.

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“…The negative effects of heavy metals and phenol in water on both the human body and the environment have been known for years. Consumption of water with increased concentrations of iron and copper ions causes health problems such as disorders of the nervous and cardiovascular systems, abnormal metabolism or cancer [1,2]. Conversely, phenol, an organic aromatic compound, has been demonstrated to exert a detrimental impact on the functioning of the human body, manifesting as skin irritation, cardiac, renal and hepatic impairment, visual impairment and metabolic dysfunction [3].…”

Section: Introductionmentioning

confidence: 99%

Removal of Inorganic and Organic Pollutants from Liquid Phase by Membrane Based on Carbonaceous Materials

Przybyl,

Bazan-Wozniak,

Poznan

et al. 2024

Preprint

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The present work reports the effective method for removal of inorganic and organic pollutants using membranes based on different carbonaceous materials. The membranes were prepared based on cellulose acetate (18 wt. %), polyvinylpyrrolidone as a pore generating agent (2 wt. %) and activated carbon (1 wt.%). Activated carbons were developed from residues after extraction of mushroom Inonotus obliguus using microwave radiation. It has been shown that addition of activated carbon the physical (porosity, equilibrium water content and permeability) and chemical (content of the surface oxygen group) properties of the membranes. The addition of carbon material has a positive effect on the removal of copper ions from their aqueous solutions by the cellulose-carbon composites obtained. Moreover, the membranes were proved to be more effective in removal of copper ions than iron ones and phenol. The membranes were found to show higher effectiveness in copper removal from a solution of the initial concentration 800 mg/L. The most efficient in copper ions removal was the membrane containing urea-enriched activated carbon.

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“…They easily accumulate in organisms via the food cycle and destroy the regular physical activities of organisms, producing a great threat to the environment and humans. Hence, there is a need to develop new functional materials or efficient and green technologies to address the water contamination issues caused by heavy metal ions. − To date, a number of technologies such as adsorption sedimentation separation, solvent extraction, ion exchange, and membrane separation have been applied to eliminate anions and cations. Among these strategies, adsorption has the advantages of being inexpensive, convenient, and efficient. , Consequently, it has been accepted as a process for eliminating heavy metal ions.…”

Section: Introductionmentioning

confidence: 99%

“…Hence, there is a need to develop new functional materials or efficient and green technologies to address the water contamination issues caused by heavy metal ions. 7−10 To date, a number of technologies such as adsorption sedimentation separation, 11 solvent extraction, 12 ion exchange, 13 and membrane separation 14 have been applied to eliminate anions and cations. Among these strategies, adsorption has the advantages of being inexpensive, convenient, and efficient.…”

Section: ■ Introductionmentioning

confidence: 99%

Porphyrin-Based Conjugated Microporous Polymers for Highly Efficient Adsorption of Metal Ions

et al. 2022

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The capture and elimination of anions and cations from water have attracted a great deal of attention and are quite vital for clean production and environmental remediation. In this work, we present the synthesis of four porphyrin (Por)-based conjugated microporous polymers (CMPs, namely, Por-CMP-1–4), which were produced through a Sonogashira–Hagihara linked response using porphyrin and acetylene aromatic compounds as building blocks and used as absorbents to eliminate metal ions from water. The as-synthesized Por-CMP-1–4 exhibit an amorphous porous structure and outstanding caloric and physicochemical properties. Taking advantage of their larger specific surface areas, i.e., 541.47, 614.58, 382.38, and 677.90 m2 g–1 for Por-CMP-1–4, respectively, and their chelating active site that originated from the porphyrin ring, Por-CMP-1–4 show better Zn2+, Cu2+, and Pb2+ adsorption ability. Among them, Por-CMP-3 has the greatest adsorbability of 640 mg g–1 for Zn2+, with an adsorption efficiency of 80%, whereas its adsorption capacities for Cu2+ and Pb2+ ions were both 334 mg g–1, with an adsorption efficiency of 42% for Cu2+ and Pb2+. Employing Por-CMP-3 as a representative example, its adsorption kinetics has been systematically investigated. The adsorption behavior of Por-CMP-3 with respect to the Zn2+ ion is shown to exhibit pseudo-first-order kinetics and Langmuir isotherm modes. Meanwhile, the adsorption mechanism is discussed in detail, and it was thought it might be chelation, in which the nitrogen atoms with a single pair of electrons on the porphyrin ring interacted with metal ions to form stable chelation coordination bonds, thus removing metal ions selectively and effectively. Furthermore, Por-CMP-3 exhibited good reusability, retaining 60% of its Zn2+ removal rate after four continuous adsorptions.

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Efficient removal of high-concentration copper ions from wastewater via 2D g-C3N4 photocatalytic membrane filtration

Cited by 32 publications

References 37 publications

2D materials towards energy conversion processes in nanofluidics

2D materials towards energy conversion processes in nanofluidics

Removal of Inorganic and Organic Pollutants from Liquid Phase by Membrane Based on Carbonaceous Materials

Porphyrin-Based Conjugated Microporous Polymers for Highly Efficient Adsorption of Metal Ions

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