Nutrient release properties of a urea–magnesium–natural rubber composite coated with chitosan

Adlim, Muhammad; Fitri, Zarlaida; Rahmayani, Ratu Fazlia Inda; Wardani, Rauzaton

doi:10.1016/j.eti.2019.100442

Cited by 24 publications

(7 citation statements)

References 25 publications

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“…It was reported that allicin lowers the hydrolysis rate of urea and postpones the availability of nutrients to plants. Adlim et al [ 84 ] developed urea-magnesium-natural rubber composite coated with chitosan. They reported that magnesium interacts with urea to become solid and become trapped in the rubber matrix, holding urea release.…”

Section: Coating Materialsmentioning

confidence: 99%

Controlled Release Fertilizers: A Review on Coating Materials and Mechanism of Release

Lawrencia

Wong

Low

et al. 2021

Plants

276

149

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Rising world population is expected to increase the demand for nitrogen fertilizers to improve crop yield and ensure food security. With existing challenges on low nutrient use efficiency (NUE) of urea and its environmental concerns, controlled release fertilizers (CRFs) have become a potential solution by formulating them to synchronize nutrient release according to the requirement of plants. However, the most significant challenge that persists is the “tailing” effect, which reduces the economic benefits in terms of maximum fertilizer utilization. High materials cost is also a significant obstacle restraining the widespread application of CRF in agriculture. The first part of this review covers issues related to the application of conventional fertilizer and CRFs in general. In the subsequent sections, different raw materials utilized to form CRFs, focusing on inorganic and organic materials and synthetic and natural polymers alongside their physical and chemical preparation methods, are compared. Important factors affecting rate of release, mechanism of release and mathematical modelling approaches to predict nutrient release are also discussed. This review aims to provide a better overview of the developments regarding CRFs in the past ten years, and trends are identified and analyzed to provide an insight for future works in the field of agriculture.

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Section: Coating Materialsmentioning

confidence: 99%

Controlled Release Fertilizers: A Review on Coating Materials and Mechanism of Release

Lawrencia

Wong

Low

et al. 2021

Plants

276

149

View full text Add to dashboard Cite

show abstract

“…The chitosan solution was previously prepared by dissolving 0.6 g of chitosan flakes (medium molecular weight) in 100 mL of a 1.5% aqueous acetic acid solution (Adlim et al, 2019). The Fe-ZnO catalyst was prepared by gradually dissolving 29.8 g of a Zn(NO3)2•6H2O crystal into 100 mL of the chitosan solution with stirring.…”

Section: Preparation Of Fe-znomentioning

confidence: 99%

Photocatalytic Degradation of Skim-Latex-Vapor Odor Using Iron-Doped Zinc Oxide

Muktaridha¹,

Adlim²,

Suhendrayatna³

et al. 2021

IJTech

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The photocatalytic degradation of the vapor odor of skim natural rubber latex, which is composed of volatile organic compounds (VOCs-NR), was conducted using iron-doped zinc oxide (Fe-ZnO) photocatalyst nanoparticles. The research objectives were to study the photocatalyst, to develop the photocatalytic reactor used for the photodegradation of VOCs-NR, and to analyze the odor reduction of the degraded VOCs-NR. Fe-ZnO was prepared by the sol-gel method and immobilized onto fiberglass cloth as the support material, followed by annealing. The Fe-ZnO nanoparticles were dispersed on the fiberglass surface. A photocatalytic reactor was developed for the gas phase. The research findings showed that gas chromatography-mass spectroscopy detected 24 dominant chemical components in the VOC-NR stock before photocatalytic degradation. The components decreased to 11 after 30 min, only 3 components remained after 40 min of the photocatalytic process, and no component was observed after 80 min of photoirradiation. An organoleptic test was conducted to validate that the odor degraded to a very low level.

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“…It is urgent to improve crop yield to meet the needs of human survival. − Agricultural advances in recent decades have led to the use of a variety of fertilizers to ensure crop growth . However, the extensive use of fertilizers has caused numerous environmental problems. − When the fertilizer is applied to the plants, the part that is not absorbed by the corps can easily percolate through the gaps in the soil, resulting in the pollution of underground water sources and eutrophication of water bodies, leading to the formation of chemicals that can no longer be absorbed by plants, resulting in the loss of nutrients. − Therefore, it is necessary to use slow-release fertilizers to delay the release cycle, ensuring the crop yield and reducing the harm to the environment , …”

Section: Introductionmentioning

confidence: 99%

Preparation of Hypromellose-Graft-Polyacrylic Acid Superabsorbent Resin by Ultraviolet Polymerization and Its Slow-Release Performance

Zhu,

Sawut,

Simayi

et al. 2024

ACS Appl. Polym. Mater.

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A hypromellose-graft-poly(acrylic acid) (HPMC-g-PAA) superabsorbent resin was synthesized through the graft polymerization of hydroxypropyl methylcellulose and acrylic acid in an aqueous solution by UV polymerization, with the addition of an initiator and cross-linking agent. Additionally, the HPMC-g-PAA/urea composite was synthesized by using a one-pot method to create a slow-release fertilizer by incorporating urea into the structure of superabsorbent materials. The structures of HPMC-g-PAA and HPMC-g-PAA/urea were characterized by FTIR, TGA and SEM. The effects of preparation conditions such as UV exposure time, HPMC content, neutralization degree, initiator amount, amount of cross-linking agent, and urea content on the water absorption capacity of the superabsorbent polymers were evaluated. Under optimal conditions, the HPMC-g-PAA exhibited a maximum absorption capacity of 1567 g/g in distilled water and 88.5 g/g in NaCl solution (0.9 wt %). Similarly, the HPMC-g-PAA/urea demonstrated a maximum absorption capacity of 1382 g/g in distilled water and 82.3 g/g in NaCl solution (0.9 wt %). The comprehensive investigation encompassed the assessment of slow-release and water-retention properties, as well as a growth experiment conducted on the samples. The slow-release period of sample reached 93% at the 26th hour. The obtained results unequivocally validate the effectiveness of the synthesized superabsorbent resin and slow-release fertilizer in significantly enhancing plant growth.

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Nutrient release properties of a urea–magnesium–natural rubber composite coated with chitosan

Cited by 24 publications

References 25 publications

Controlled Release Fertilizers: A Review on Coating Materials and Mechanism of Release

Controlled Release Fertilizers: A Review on Coating Materials and Mechanism of Release

Photocatalytic Degradation of Skim-Latex-Vapor Odor Using Iron-Doped Zinc Oxide

Preparation of Hypromellose-Graft-Polyacrylic Acid Superabsorbent Resin by Ultraviolet Polymerization and Its Slow-Release Performance

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