Preparation and Characterization of Anionic Composite Hydrogel for Dyes Adsorption and Filtration: Non-linear Isotherm and Kinetics Modeling

Mokhtar, Adel; Abdelkrim, Soumia; Sardi, Amina; Benyoub, Amina; Besnaci, Hadj; Cherrak, Rachida; Hadjel, Mohammed; Boukoussa, Bouhadjar

doi:10.1007/s10924-020-01719-6

Cited by 36 publications

(19 citation statements)

References 62 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The spectra of the three hydrogels show common characteristic peaks at 1099, 1415, 1647, and 2939 cm −1 . 30,37 The peaks at 2939 and 1647 cm −1 are attributed to the C−H stretching vibrations of −CH 3 and −CH 2 groups. 37,38 The characteristic peaks at 1099 and 1415 cm −1 result from C−H and C−O stretching, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…30,37 The peaks at 2939 and 1647 cm −1 are attributed to the C−H stretching vibrations of −CH 3 and −CH 2 groups. 37,38 The characteristic peaks at 1099 and 1415 cm −1 result from C−H and C−O stretching, respectively. 39 Meanwhile, there are broadband O−H stretching peaks around 3310 cm −1 showcasing the large amounts of hydroxyl groups in the hydrogels.…”

Section: Resultsmentioning

confidence: 99%

“…To further understand the chemical structures of PVA, agar, and PVA–agar-150, FTIR characterization was conducted, as shown in Figure b. The spectra of the three hydrogels show common characteristic peaks at 1099, 1415, 1647, and 2939 cm –1 . , The peaks at 2939 and 1647 cm –1 are attributed to the C–H stretching vibrations of −CH 3 and −CH 2 groups. , The characteristic peaks at 1099 and 1415 cm –1 result from C–H and C–O stretching, respectively . Meanwhile, there are broadband O–H stretching peaks around 3310 cm –1 showcasing the large amounts of hydroxyl groups in the hydrogels.…”

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Highly Efficient and Salt-Rejecting Poly(vinyl alcohol) Hydrogels with Excellent Mechanical Strength for Solar Desalination

Wilson

Lim

Lee

2022

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Interfacial solar steam generation (ISSG)-based solar desalination has recently emerged as a promising solution to tackle the global issue of fresh water scarcity. However, the energy-intensive process of conventional vapor generation techniques limits its practical applications. Hydrogels with three-dimensional (3D) structures have been reported to alleviate this energy demand, but their applications in sustainable solar desalination are hindered by their poor mechanical stability. Herein, we propose a 3D poly(vinyl alcohol) (PVA)-based hydrogel with excellent mechanical strength for effective solar desalination. The dual polymer network hydrogel (PVA–agar) incorporated with multi-walled carbon nanotubes (MWCNTs) achieved a noticeable evaporation rate of 3.1 kg m–2 h–1 under 1 sun irradiation, owing to its broadband light absorption, intrinsic water channels, and microporous structure that help reduce the latent heat of vaporization. More importantly, the application of kosmotropic ammonium sulfate ions was found to greatly improve the mechanical strength of the hydrogels using a facile Hofmeister-assisted soaking method. Finally, the PVA–agar–MWCNT hydrogel was able to desalinate seawater efficiently (2.5 kg m–2 h–1) with self-cleaning capability of salt crystals. The salinity level of the desalinated water was also comparable to drinking clean water. The present results would pave the way for fabricating mechanically strong, hydrophilic, and highly efficient hydrogels for effective and sustainable solar desalination.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Highly Efficient and Salt-Rejecting Poly(vinyl alcohol) Hydrogels with Excellent Mechanical Strength for Solar Desalination

Wilson

Lim

Lee

2022

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

“…Pesticides, herbicides, drugs, heavy metals, and dyes are among the essential contaminants which are discharged from numerous industries such as pharmaceutics, cosmetics, plastics industry, textiles, food industry, etc. [2][3][4][5][6][7][8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Cationic dye removal using Pergularia tomentosa L. fruit: kinetics and isotherm characteristics using classical and advanced models

Belmabrouk¹,

Selmi²,

Alshahrani³

et al. 2022

Comptes Rendus. Chimie

View full text Add to dashboard Cite

show abstract

“…The above three hydrogels can be used effectively to treat toxic dyes of polluted wastewater. Hydrogels contain many functional groups such as carboxyl groups, hydroxyl, sulfonic acid, and amide, which have an excellent binding effect on dye molecules 19 . Dyes can quickly diffuse into the network structure and be quickly adsorbed by hydrogels through chemical, electrostatic, and hydrophobic interactions 20 .…”

Section: Introductionmentioning

confidence: 99%

Hydrogel‐biochar composites for removal of methylene blue: Adsorption performance, characterization, and adsorption isotherm, kinetics, thermodynamics analysis

Wang¹,

Zheng²,

Zong³

et al. 2022

J of Applied Polymer Sci

View full text Add to dashboard Cite

Low‐concentration organic dye wastewater severely threatens the growth and reproduction of animals and plants, as well as the survival and development of human beings and the environment. Although versatile hydrogel composites have been prepared owing to their excellent adsorption performance, the high‐removal efficiency and fast adsorption rate are still two crucial problems related to practical applications. Herein, xanthan gum‐g‐poly (acrylic acid‐co‐acrylamide)/biochar composite hydrogels with high‐removal efficiency and fast adsorption rate of methylene blue (MB) are synthesized using sodium dodecyl sulfate as a pore‐foaming agent. The composite hydrogels exhibit rough and porous three‐dimensional structures, which can make the internal active adsorption sites to be fully exposed and facilitate the MB diffusion process. MB's removal efficiency can reach 96.64% within 30 minutes, which is almost the first time that a biochar‐contained hydrogel could show superior removal efficiency of more than 95% in such a short adsorption time. The factors affecting the adsorption performance are studied comprehensively. Langmuir and pseudo‐second‐order models fit the adsorption process well. Moreover, the MB removal rate still exceeds 80% after eight cycles, which is also a vital indicator for practical treatment. Adsorption mechanism analysis shows that the synergistic effect among biochar, xanthan gum, and polymer chains and the porous structure improve the adsorption performance of the composite hydrogels. The proposed hydrogel‐biochar composites with high‐removal efficiency and adsorption rate are highly promising as an alternative adsorbent for advanced printing and dyeing wastewater treatment.

show abstract

Preparation and Characterization of Anionic Composite Hydrogel for Dyes Adsorption and Filtration: Non-linear Isotherm and Kinetics Modeling

Cited by 36 publications

References 62 publications

Highly Efficient and Salt-Rejecting Poly(vinyl alcohol) Hydrogels with Excellent Mechanical Strength for Solar Desalination

Highly Efficient and Salt-Rejecting Poly(vinyl alcohol) Hydrogels with Excellent Mechanical Strength for Solar Desalination

Cationic dye removal using Pergularia tomentosa L. fruit: kinetics and isotherm characteristics using classical and advanced models

Hydrogel‐biochar composites for removal of methylene blue: Adsorption performance, characterization, and adsorption isotherm, kinetics, thermodynamics analysis

Contact Info

Product

Resources

About