Synthesis, utilization, and recycling of graphene oxide-based nanohybrid biopolymeric hydrogels for purification of dye wastewater Article Swipe
Omera Sarwar
,
Ruba Munir
,
Nageen Mushtaq
,
Hina Ambreen
,
Muhammad Zeeshan Bashir
,
Maryam Sana
,
Amna Muneer
,
Murtaza Sayed
,
Saima Noreen
·
YOU?
·
· 2024
· Open Access
·
· DOI: https://doi.org/10.2166/aqua.2024.033
YOU?
·
· 2024
· Open Access
·
· DOI: https://doi.org/10.2166/aqua.2024.033
Wastewater from industries contributes significantly to pollution. Adsorption of acidic dye using nanohybrid biopolymeric hydrogels has evolved as one of the viable techniques. Graphene oxide (GO)/chitosan (CS)–polyvinyl alcohol (PVA), GO/starch–PVA, and GO/agar–PVA hydrogels were synthesized. The results revealed that the following are the ideal values: GO/CS–PVA: 3 pH (8.251 mg g−1), 0.05 g/50mL dosage (8.251 mg g−1), 90 min (8.251 mg g−1), 12 ppm dye concentration (8.251 mg g−1), and 30 °C (8.251 mg g−1); for GO/starch–PVA: 2 pH (7.437 mg g−1), 0.05 g/50 mL dosage (7.437 mg g−1), 90 min (7.437 mg g−1), 12 ppm dye concentration (7.437 mg g−1), and 30 °C (7.437 mg g−1); and for GO/agar–PVA; 3 pH (6.142 mg g−1), 0.05 g/50 mL dosage (6.142 mg g−1), 90 min (6.142 mg g−1), 12 ppm dye concentration (6.142 mg g−1), 30 °C (6.142 mg g−1). GO/CS–PVA outperformed the other hydrogels. The Langmuir model suited GO/CS–PVA data, while GO/starch–PVA and GO/agar–PVA hydrogels followed Freundlich isotherm models. The adsorption capacity data followed a pseudo-second-order model. Negative value of Gibbs free energy and enthalpy showed that the reactions were spontaneous and exothermic in nature. The presence of heavy metals, electrolytes, and detergents/surfactants affected the dye adsorption. Entropy changes positive values implied randomness at the solid/solution contact. The desorption (60, 55, and 58%) of GO/CS–PVA, GO/starch–PVA, and GO/agar–PVA hydrogels was obtained using 0.5 N NaOH. Scanning electron microscope, X-ray diffraction, and Fourier transform infrared (FT-IR) were used for characterization.
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- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.2166/aqua.2024.033
- https://iwaponline.com/aqua/article-pdf/doi/10.2166/aqua.2024.033/1418218/jws2024033.pdf
- OA Status
- diamond
- Cited By
- 5
- References
- 102
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4396801649
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Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W4396801649Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.2166/aqua.2024.033Digital Object Identifier
- Title
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Synthesis, utilization, and recycling of graphene oxide-based nanohybrid biopolymeric hydrogels for purification of dye wastewaterWork title
- Type
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articleOpenAlex work type
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enPrimary language
- Publication year
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2024Year of publication
- Publication date
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2024-05-10Full publication date if available
- Authors
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Omera Sarwar, Ruba Munir, Nageen Mushtaq, Hina Ambreen, Muhammad Zeeshan Bashir, Maryam Sana, Amna Muneer, Murtaza Sayed, Saima NoreenList of authors in order
- Landing page
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https://doi.org/10.2166/aqua.2024.033Publisher landing page
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https://iwaponline.com/aqua/article-pdf/doi/10.2166/aqua.2024.033/1418218/jws2024033.pdfDirect link to full text PDF
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YesWhether a free full text is available
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diamondOpen access status per OpenAlex
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https://iwaponline.com/aqua/article-pdf/doi/10.2166/aqua.2024.033/1418218/jws2024033.pdfDirect OA link when available
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Self-healing hydrogels, Graphene, Wastewater, Oxide, Materials science, Nanotechnology, Chemical engineering, Chemistry, Organic chemistry, Polymer chemistry, Waste management, EngineeringTop concepts (fields/topics) attached by OpenAlex
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5Total citation count in OpenAlex
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2025: 4, 2024: 1Per-year citation counts (last 5 years)
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102Number of works referenced by this work
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10Other works algorithmically related by OpenAlex
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