Waste to high-value products: The performance and potential of carboxymethylcellulose hydrogels via the circular economy

Kaur, Prabhpreet; Bohidar, Himadri B.; Nisbet, David R.; Pfeffer, Frederick M.; Rifai, Aaqil; Williams, Richard J.; Agrawal, Ruchi

doi:10.1007/s10570-023-05068-0

Cited by 26 publications

(11 citation statements)

References 86 publications

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“…The Indian agriculture research institute (IARA) fabricated a new hydrogel (branded as Pusa hydrogel) and explored for agronomic use to overcome drought and to ensure efficient water use in some semi‐arid and arid regions of India 5 . Initially, sodium and potassium polyacrylate were explored for development of agriculture hydrogel due to their superabsorbent and water insoluble nature 6 . Preparation of hydrogels from natural polymer is currently the focus of modern research in hydrogel agriculture 7…”

Section: Introductionmentioning

confidence: 99%

Eco‐friendly three‐dimensional hydrogels for sustainable agricultural applications: Current and future scenarios

Azeem

Islam

Khan

et al. 2023

Polymers for Advanced Techs

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Modern world is searching for water efficient agriculture techniques as irrigation is becoming scarce. Limited water resources and more food demand are the two key challenges in agriculture. Hydrogels which can respond intelligently by pH, temperature, light, ionic strength, osmotic pressure, magnetic or electric field changes are termed as intelligent or smart hydrogels which are analogous to conventional hydrogels in preparatory methods and features. Lag phase, constant release and decay phase are three steps involved in release of nutrients from polymeric hydrogels. In fact, hydrogels act as little reservoirs of water and dissolve nutrients that are released in controlled manner anchored by plant roots via capillary action. Hydrogels also sustain optimum amount of water in water stress conditions and reabsorb water in moist conditions which ultimately increases seedling, seed germination, plant growth and crop yield. Fertilizer and salt release are majorly dependent upon pH and temperature followed by diffusion‐controlled mechanism. Cross‐linkers, binders and fillers play pivotal role in determining properties, architecture and hydrogel pores. In comparison to potassium (K+) and phosphate (PO4−3) ions, nitrates (NO3−1) and ammonium (NH4+1) ions exhibited faster release rate. This review spotlights application prospects of three dimensional hydrogel in agriculture. Initially, properties of hydrogels, their classification, preparatory methods, effect of natural‐synthetic‐polymer blending and role of fillers are stated. Afterward, hydrogel functioning, significance, advantages, mechanism of fertilizer release and agriculture specific applications of hydrogels are comprehensively described. In conclusion, extraordinary biocompatible, cheaper, stable, biodegradable, durable, non‐toxic and re‐wettable characteristics of hydrogel systems motivated their utilization in agronomical applications.

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Section: Introductionmentioning

confidence: 99%

Eco‐friendly three‐dimensional hydrogels for sustainable agricultural applications: Current and future scenarios

Azeem

Islam

Khan

et al. 2023

Polymers for Advanced Techs

View full text Add to dashboard Cite

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“…Moreover, advancing functionalization techniques to customize SAPs for specific applications is key. Tailoring properties like pore sizes, chemical structures, and responsiveness to environmental stimuli is vital for applications ranging from pollution control to personal care products [ 80 ].…”

Section: Limitations In Using Sustainable Superabsorbent Polymersmentioning

confidence: 99%

“…Comprehensive field trials and long-term studies are essential for evaluating the practical effectiveness, durability, and environmental impact of SAPs in real-world scenarios [ 53 ]. Encouraging interdisciplinary collaboration across fields such as chemistry, materials science, biomedical engineering, environmental science, and chemical engineering is vital for overcoming current challenges and maximizing the potential of SAPs in various applications [ 80 ]. Finally, engaging with regulatory bodies and policymakers to establish supportive frameworks is crucial for facilitating the market entry of sustainable SAPs and promoting the adoption of eco-friendly alternatives.…”

Section: Future Directionsmentioning

confidence: 99%

Advancements in Cellulose-Based Superabsorbent Hydrogels: Sustainable Solutions across Industries

Omidian,

Akhzarmehr,

Chowdhury

2024

Gels

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The development of superabsorbent hydrogels is experiencing a transformative era across industries. While traditional synthetic hydrogels have found broad utility, their non-biodegradable nature has raised environmental concerns, driving the search for eco-friendlier alternatives. Cellulose-based superabsorbents, derived from sustainable sources, are gaining prominence. Innovations include biodegradable polymer hydrogels, natural cellulose-chitosan variants, and cassava starch-based alternatives. These materials are reshaping agriculture by enhancing soil fertility and water retention, serving as potent hemostatic agents in medicine, contributing to pollution control, and providing eco-friendly construction materials. Cellulose-based hydrogels also offer promise in drug delivery and hygiene products. Advanced characterization techniques aid in optimizing their properties, while the shift towards circular economy practices further highlights sustainability. This manuscript provides a comprehensive overview of these advancements, highlighting their diverse applications and environmental benefits.

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“…Carboxymethyl cellulose (CMC) presents carboxylic groups along the cellulosic backbone, which confers high water solubility and chemical reactivity. This derivative is an ideal candidate for obtaining hydrogels with high absorption in physiologically relevant solvents [119], as well as mechanical strength and biodegradability [120]. The high potential of CMC hydrogels in various applications was presented in recent papers [120][121][122][123][124]: wound dressings, foods, water decontamination by removal of toxic dyes, and agricultural applications (holding water in soil or targeted delivery of agrochemicals).…”

Section: Cellulose and Derivativesmentioning

confidence: 99%

Diversity of Bioinspired Hydrogels: From Structure to Applications

Lupu¹,

Grădinaru²,

Gradinaru

et al. 2023

Gels

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Hydrogels are three-dimensional networks with a variety of structures and functions that have a remarkable ability to absorb huge amounts of water or biological fluids. They can incorporate active compounds and release them in a controlled manner. Hydrogels can also be designed to be sensitive to external stimuli: temperature, pH, ionic strength, electrical or magnetic stimuli, specific molecules, etc. Alternative methods for the development of various hydrogels have been outlined in the literature over time. Some hydrogels are toxic and therefore are avoided when obtaining biomaterials, pharmaceuticals, or therapeutic products. Nature is a permanent source of inspiration for new structures and new functionalities of more and more competitive materials. Natural compounds present a series of physico-chemical and biological characteristics suitable for biomaterials, such as biocompatibility, antimicrobial properties, biodegradability, and nontoxicity. Thus, they can generate microenvironments comparable to the intracellular or extracellular matrices in the human body. This paper discusses the main advantages of the presence of biomolecules (polysaccharides, proteins, and polypeptides) in hydrogels. Structural aspects induced by natural compounds and their specific properties are emphasized. The most suitable applications will be highlighted, including drug delivery, self-healing materials for regenerative medicine, cell culture, wound dressings, 3D bioprinting, foods, etc.

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Waste to high-value products: The performance and potential of carboxymethylcellulose hydrogels via the circular economy

Cited by 26 publications

References 86 publications

Eco‐friendly three‐dimensional hydrogels for sustainable agricultural applications: Current and future scenarios

Eco‐friendly three‐dimensional hydrogels for sustainable agricultural applications: Current and future scenarios

Advancements in Cellulose-Based Superabsorbent Hydrogels: Sustainable Solutions across Industries

Diversity of Bioinspired Hydrogels: From Structure to Applications

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