Highly degradable chitosan-montmorillonite (MMT) nano-composite hydrogel for controlled fertilizer release

Dou, Zeou; Farias, Maria Vitoria Bini; Chen, Wensi; He, Dongjing; Hu, Yuhang; Xie, Xing

doi:10.1007/s11783-023-1653-9

Cited by 21 publications

(4 citation statements)

References 34 publications

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“…Inorganic particles/polymer composites have advantages over polymer blending systems because they act as polymer reinforcements. Recently, composites based on montmorillonite/chitosan [15], bentonite/carnauba wax [16], and poly(acrylic acid-co-acrylamide)-grafted silica/deproteinized natural rubber [17] were reported as CRF materials. The drive toward more sustainable agriculture has motivated research efforts to minimize and utilize biowastes.…”

Section: Introductionmentioning

confidence: 99%

Nutrient controlled release behaviors and plant growth of NPK encapsulated hydroxyapatite/alginate biocomposite toward agricultural and environmental sustainability

Nooeaid,

Cha-aim,

Chuysinuan

et al. 2024

Mater. Res. Express

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Controlled release fertilizers (CRFs) promote sustainable agriculture by gradually releasing nutrients into the soil while also mitigating environmental pollution. Nitrogen-phosphorus-potassium embedded hydroxyapatite/alginate (NPK-HA/Alg) biocomposite beads were developed using a simple, cost-effective, and environmentally friendly dropping and external gelation method. Addition of eggshell biowaste-derived HA to the alginate matrix improved the structural, thermal, and structural stability of the alginate beads, and enabled the inclusion of significantly high plant nutrients. The biocomposite beads exhibited a prolonged and controlled nutrient release in deionized water over 35 days. Biocomposite bead addition was assessed for the growth of flowering Chinese cabbage in a controlled greenhouse environment. Results confirmed vegetative growth with high values of plant height, number of leaves, and fresh and dry weights. The non-toxic and cost-effective NPK-HA/Alg biocomposite beads demonstrated controlled nutrient release as promising CRF materials to promote sustainable agricultural production.

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Section: Introductionmentioning

confidence: 99%

Nutrient controlled release behaviors and plant growth of NPK encapsulated hydroxyapatite/alginate biocomposite toward agricultural and environmental sustainability

Nooeaid,

Cha-aim,

Chuysinuan

et al. 2024

Mater. Res. Express

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“…It has been reported that a semi-interpenetrated polymer network composed of poly(acrylic acid- co -acrylic amide) and urea–formaldehyde oligomers exhibited slow release of P and potassium nutrients loaded during the preparation . A slow-release fertilizer is a superior alternative to traditional fertilizers in terms of nutrient use efficiency, leaching mitigation, and environmental friendliness …”

Section: Introductionmentioning

confidence: 99%

“…15 A slow-release fertilizer is a superior alternative to traditional fertilizers in terms of nutrient use efficiency, leaching mitigation, and environmental friendliness. 16 To connect the P recovery from wastewater and the subsequent reuse in soil fertilization, we introduce a chitosan− montmorillonite (MMT)−Fe nanocomposite hydrogel as a P adsorbent and controlled releaser. The usage of inorganic layered nanomaterials like clay and clay minerals as a constituent of controlled delivery systems is a well-established practice.…”

Section: Introductionmentioning

confidence: 99%

Chitosan–Montmorillonite–Fe Nanocomposite Hydrogel for Phosphate Recovery and Reuse

Dou

Xie

2023

ACS EST Eng.

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Phosphorous (P) recovery from wastewater is a promising solution to the depleting nonrenewable phosphate rocks as the raw material for fertilizer production and to the eutrophication caused by excessive nutrient contamination in surface waters. This work explored the potential of an electrolyte biohydrogel based on chitosan as a phosphate sorbent and controlled releaser to recover the nutrient from wastewater and then release it as a fertilizer to food plants. Sorption kinetics and isotherm were quantified in batch experiments. The hydrogel reached saturation within 2 h, and the projected maximum phosphate sorption capacity was above 86.7 mg·g–1. Mathematic models and characterizations suggested that the sorption involved two main mechanisms: (i) electrosorption with cationic amine groups and (ii) ferric oxide hydrate ligand exchange. Versatile sorption pathways enabled stable capacity across a range of pH. In successive desorption experiments, 72.4% of the loaded P was continuously released over 16 days, a high content of which was bioavailable as indicated by the Mehlich 2 extraction test. With the additional water retaining capability, the P-laden hydrogels have the potential to be reused in soil amendment as a controlled-release P fertilizer.

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“…Clay can be used the prepared PVA/CHT hydrogels in order to impart antimicrobial and nanocomposite properties. Also, it is known that nanoclay (NC) and montmorillonite clay (MMT) used in the preparation of PVA/CHT/KIL nanocomposite hydrogels impart high swelling properties to the hydrogel (Ali, et al 2019;Amri, et al 2019;Chee, et al 2020;Dou, et al 2023; Ghanaatian and Entezam 2019;Noori, et al 2018). Essential oils also can be incorporated in addition to hydrogels to provide antimicrobial activity (Altaf, et al 2021).…”

Section: Introductionmentioning

confidence: 99%

Characterization and Antimicrobial Activity of PVA/ Chitosan/ Clay/ Essential Oil Hydrogel Prepared via Freeze-Thaw

Bayraktar

Copur

Güneş

et al. 2023

Preprint

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In this study, eco-friendly, low-cost and high-antimicrobial activity Polyvinyl alcohol(PVA)/Chitosan (CHT)/Clay/Oil nanocomposite hydrogels were prepared via freeze-thaw (F-T) method. Montmorillonite (MMT) and nanoclay (NC) were added as clay to PVA/CHT/Clay/Oil hydrogels. MMT and NC decreased the number of F-T cycles in the hydrogel and increased the surface hydrophilicity of the hydrogels. Clove, aloe vera and argan oil were added as oil to PVA/CHT/CLAY mixtures. Hydrogels containing clove oil showed antimicrobial activity against eight microorganisms (Escherichia coli ATCC 25922, Pseudomonas aeruginosa ATCC 27853, Klebsiella pneumoniae ATCC 70603, methicilline resistant Staphylococcus aureus ATCC 43300 (MRSA), Salmonella enteritidis ATTC 13076, Sarcina lutea ATCC 9341, Bacillus cereus ATTC 11778, Candida albicans NRRL Y-417). Nanocomposite hydrogels containing clove oil , have been found to have high antimicrobial activity, skin adhesion and swelling degree. Contact angle values less than 90° were measured PVA/CHT-4/MMT-4/ Oilclove2, PVA/CHT-4/NC- 4/Oilclove2 hydrogels. According to FT-IR, SEM, XRD, Contact angle, and swelling test results, PVA/CHT/Clay/Oil hydrogel content was determined as 25 µL of clove oil and 72.7% PVA (400 mg), 9.1% CHT (50 mg), 18.2% Clay (100 mg).

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Highly degradable chitosan-montmorillonite (MMT) nano-composite hydrogel for controlled fertilizer release

Cited by 21 publications

References 34 publications

Nutrient controlled release behaviors and plant growth of NPK encapsulated hydroxyapatite/alginate biocomposite toward agricultural and environmental sustainability

Nutrient controlled release behaviors and plant growth of NPK encapsulated hydroxyapatite/alginate biocomposite toward agricultural and environmental sustainability

Chitosan–Montmorillonite–Fe Nanocomposite Hydrogel for Phosphate Recovery and Reuse

Characterization and Antimicrobial Activity of PVA/ Chitosan/ Clay/ Essential Oil Hydrogel Prepared via Freeze-Thaw

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