Adsorption of anionic and cationic dyes by a novel crosslinked cellulose-tetrafluoroterephthalonitrile-tannin polymer

Lv, Hu-Wei; Jiang, Hongliu; He, Fu‐An; Hu, Qing-Di; Zhong, Zhu-Rui; Yang, Yong-Yu

doi:10.1016/j.eurpolymj.2022.111602

Cited by 10 publications

(5 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…where C e is the concentration of the dye solution at the equilibrium (mg/L), Q e is the adsorption capacity at the equilibrium (mg/g), Q m is the maximum adsorption capacity (mg/g), 1/n is the empirical parameter associated with surface heterogeneity, k L is the adsorption constant of the Langmuir model (L/g), and k F is the adsorption constant of the Freundlich model (mg/g (L/g) −1/n ). In general, the Langmuir isotherm model assumes that a monolayer adsorption process can occur on the adsorbent surface without mutual interaction between adsorbed molecules (chemisorption), while the Freundlich isotherm model involves not only adsorption on adsorbents with inhomogeneous surfaces but also adsorption between adsorbed molecules, or the adsorption process occurs in a multilayer (physisorption) [30,31]. This study tends to follow the Langmuir isotherm model, which assumes the adsorption process occurs in a monolayer manner (chemisorption).…”

Section: Regeneration Processmentioning

confidence: 99%

Modified Layered Double Hydroxide Mg/M3+ (M3+ = Al and Cr) Using Metal Oxide (Cu) as Adsorbent for Methyl Orange and Methyl Red Dyes

Wijaya

Siregar

Badri

et al. 2023

Period. Polytech. Chem. Eng.

View full text Add to dashboard Cite

Mg/Cr-layered double hydroxide (Mg/Cr-LDH) and Mg/Al-layered double hydroxide (Mg/Al-LDH) intercalated metal oxide (Mg/Cr-Cu and Mg/Al-Cu) were synthesized by the co-precipitation method which is indicated by the X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), and Brunauer Emmett Teller (BET) analysis. Mg/Cr-LDH intercalated metal oxide increased its surface area from 21.5 to 38.9 m2/g, while the surface area of Mg/Al-LDH from 23.2 to 30.5 m2/g. The adsorption capacity of Mg/Cr-Cu is 64.156 mg/g for methyl orange (MO) and 78.740 mg/g for methyl red (MR), and the adsorption capacity of Mg/Al-Cu is 97.087 mg/g for MO and 108.696 mg/g for MR. Equilibrium time on the adsorption process occurred at 90 minutes with adsorption kinetics followed by pseudo-second-order (PSO). The adsorption isotherm followed the Langmuir isotherm equation. Data of thermodynamic parameters indicate that the adsorption process in this study occurs spontaneously and endothermically. The regeneration results show that Mg/Cr-Cu and Mg/Al-Cu can be used for the 5 cycles regeneration process of MO and MR adsorption process. Interactions that occur between adsorbents and adsorbate include physical interactions, interactions with the involvement of hydrogen bonds, and electrostatic interactions.

show abstract

Section: Regeneration Processmentioning

confidence: 99%

Modified Layered Double Hydroxide Mg/M3+ (M3+ = Al and Cr) Using Metal Oxide (Cu) as Adsorbent for Methyl Orange and Methyl Red Dyes

Wijaya

Siregar

Badri

et al. 2023

Period. Polytech. Chem. Eng.

View full text Add to dashboard Cite

show abstract

“…13,14 These materials have demonstrated potential applications in different sectors, including adhesives, coatings, food packaging, and wound dressing, among other. 15 Yet, their use at an industrial scale is limited by the high costs of purified tannins and the side-stream contamination of the conventional methods used for their incorporation into polymer matrices.…”

Section: Introductionmentioning

confidence: 99%

Laccase‐mediated polymerization of tannins from a pine bark extract: Toward an eco‐friendly valorization of forest wastes

Vera,

Silva,

et al. 2024

J of Applied Polymer Sci

View full text Add to dashboard Cite

The valorization of tannins from forest by‐products is a major opportunity for the sustainable development of the forestry industry. Herein we report the laccase‐mediated polymerization of tannins obtained from an aqueous pine bark extract. The reaction was conducted under an oxygen atmosphere at 50°C for 60 min and followed by UV–Vis, fluorescence intensity, phenol content, and viscosity measurements. An insoluble polymer was obtained after 45 min, which was attributed to coupling reactions triggered by phenoxyl radicals within the tannins mixture. The polymer showed a marked increase in thermal stability compared with the precursor pine bark extract, with a total mass loss of less than 12% at temperatures up to 500°C, suggesting potential practical applications in flame retardant materials. Additionally, the polymer showed an 85% DPPH activity and a 60% attenuation of singlet oxygen release upon light irradiation, which supports antioxidant and photoprotective properties for the prepared material. To the best of our knowledge, this is the first report to describe the formation of an insoluble polymer by direct enzymatic reaction of an aqueous tannin extract. In this case, soluble tannins are the sole reactants used to produce a promising versatile material for forest waste valorization.

show abstract

“…[4] Therefore, the printing and dyeing wastewater needs to be treated to reach the discharge standard before it can be released to the ecological cycle. Currently, physical, [5] chemical, [6] biological, [7] and photocatalytic [8] methods for the treatment of wastewater have been developed. Among these methods, the physical adsorption method is the most mature and widely used.…”

Section: Introductionmentioning

confidence: 99%

Heteroatom‐Doped Carbon Nanotube Membranes from Waste Biomass for Photoelectro‐Catalytic Water Purification

Zhai,

Liu,

Xiang

et al. 2024

Advanced Sustainable Systems

View full text Add to dashboard Cite

Printing and dyeing wastewater, that is discharged after textile printing and dyeing processing, can cause irreversible damage to the aquatic ecosystem and harm the health of human beings. Till now, completely and readily removing dye molecules from industrial wastewater using a single catalyst rather than the combination of several materials remains a significant challenge. Herein, in situ preparation of carbon nanotube membranes (N‐CNTM and N‐TiO2‐CNTM) are reported that are doped using N with/without TiO2, respectively. These membranes can simultaneously function as an adsorber, a photo‐catalyst, and an electrocatalyst to efficiently remove dye pollutes from industrial waste water. Further researches reveal that the formation of p‐n type heterojunction inside of the N‐CNTM and N‐TiO2‐CNTM, can improve the hole separation and charge storage abilities, resulting in the efficient removal of dyes in the industrial waste water. This work provides a promising approach for the preparation of functionalized carbon nanotubes derived from waste biomass for the treatment of industrial water, reflecting the concept of treating waste with waste.

show abstract

Adsorption of anionic and cationic dyes by a novel crosslinked cellulose-tetrafluoroterephthalonitrile-tannin polymer

Cited by 10 publications

References 38 publications

Modified Layered Double Hydroxide Mg/M3+ (M3+ = Al and Cr) Using Metal Oxide (Cu) as Adsorbent for Methyl Orange and Methyl Red Dyes

Modified Layered Double Hydroxide Mg/M3+ (M3+ = Al and Cr) Using Metal Oxide (Cu) as Adsorbent for Methyl Orange and Methyl Red Dyes

Laccase‐mediated polymerization of tannins from a pine bark extract: Toward an eco‐friendly valorization of forest wastes

Heteroatom‐Doped Carbon Nanotube Membranes from Waste Biomass for Photoelectro‐Catalytic Water Purification

Contact Info

Product

Resources

About