Slow-release NPK fertilizer encapsulated by carboxymethyl cellulose-based nanocomposite with the function of water retention in soil

Olad, Ali; Zebhi, Hamid; Salari, Dariush; Mirmohseni, Abdolreza; Tabar, Adel Reyhani

doi:10.1016/j.msec.2018.04.083

Cited by 198 publications

(104 citation statements)

References 41 publications

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“…However, cellulose‐based superabsorbent materials have been frequently reported to be more expensive and to have lower absorption capacity than oil‐derived polyacrylate‐based materials. To address current drawbacks associated with natural superabsorbents, a novel process for the production of hydrogels from BC was developed.…”

Section: Introductionmentioning

confidence: 99%

“…Also, a natural superabsorbent hydrogel, produced by direct crosslinking of the aldehyde groups of cellulose with the amine groups of carboxymethylated chitosan, exhibited superior swelling properties (water retention of 610 g g −1 ). 34 However, cellulose-based superabsorbent materials have been frequently reported 35,36 to be more expensive and to have lower absorption capacity than oil-derived polyacrylate-based materials. To address current drawbacks associated with natural superabsorbents, a novel process for the production of hydrogels from BC was developed.…”

Section: Introductionmentioning

confidence: 99%

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Novel superabsorbent materials from bacterial cellulose

Chaiyasat

Jearanai

Christopher

et al. 2018

Polymer International

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A novel process for the production of superabsorbent materials (hydrogels) from bacterial cellulose (BC) was developed. Prior to crosslinking with a water‐soluble polyethylene glycol diacrylate (PEGDA), BC was first carboxymethylated and functionalized with glycidyl methacrylate. The degree of crosslinking influenced the swelling properties of the hydrogels. The use of greater amounts of PEGDA enhanced the formation of a thicker macromolecular network containing fewer capillary spaces in the crosslinked gel. The maximum water retention value of the hydrogels containing 2.5–3.5 mmol of carboxyl groups per gram of gel reached 125 g g−1 in distilled water, and 29 g g−1 in saline (0.9% NaCl solution). The highly porous hydrogel architecture with a pore size of 350–600 µm created a high specific surface area. This enables rapid mass penetration in superabsorbent applications. The superabsorbent hydrogels reached 80% of their maximum water absorption capacity in 30 min. © 2018 Society of Chemical Industry

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Novel superabsorbent materials from bacterial cellulose

Chaiyasat

Jearanai

Christopher

et al. 2018

Polymer International

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“…The value of initial diffusion coefficient, D of both samples is affected by the chemical structure and the surface area of the polymer, where the value of D for NPK coated with SAP is higher than NPK coated with SPC. This shows that the incorporation of carbonaceous microsphere filler into the polymer aids in controlling the release rate of the nutrients into soil; the nutrients are released slower from NPK coated with SPC than NPK coated with SAP …”

Section: Resultsmentioning

confidence: 97%

“…, where Mt / M is the released fraction at time t , n is the release exponent, and k is the release factor. According to the Korsmeyer–Peppas model developed in 1983, a value of n of ≤0.5 implies that the fertilizer release mechanism approaches a Fickian diffusion‐controlled release, n = 1.0 signifies that the fertilizer release mechanism approaches Case II transport, which is zero order release, whereas n = 0.5–1.0 indicates that the fertilizer release mechanism is anomalous transport, also known as non Fickian diffusion . Table summarizes the values for N, P, and K release from NPK coated with SAP and NPK coated with SPC in soil.…”

Section: Resultsmentioning

confidence: 99%

Carbonaceous microsphere‐based superabsorbent polymer as filler for coating of NPK fertilizer: Fabrication, properties, swelling, and nitrogen release characteristics

Khan

Zakaria

Kim

et al. 2019

J of Applied Polymer Sci

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Recently, the use of controlled release fertilizers in agriculture has resulted in huge benefits in plant growth and cultivation. Superabsorbent polymer (SAP)‐coated fertilizers have the added advantage in retaining water in soil after irrigation and also reduce the nutrient release rate from soil in a controlled manner. This study aimed to produce a nitrogen–phosphorus–potassium (NPK) fertilizer coated with superabsorbent carbonaceous microspheres polymer (SPC) by inverse suspension polymerization method with water‐retention and controlled release properties. Two sets of experiments were conducted: (1) three different weight percentages and (2) different materials. NPK coated with SPC showed increasing water‐retention ability with respect to carbon microsphere percentages and retains >80% water at the 30th day of experiment compared with pure NPK and NPK coated with SAP. The slow release behavior of all samples was investigated by induced coupled plasma mass spectrometry spectrometry and results showed that NPK coated with SAP and SPC has a low release rate with <50% nutrient release compared with uncoated NPK at the 30th day. The release mechanism kinetics of NPK coated with SAP and SPC were studied based on the Kosmeyer–Peppas model. The mechanisms approached Fickian diffusion‐controlled release as the n value for both samples was less than 0.5. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48396.

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“…Wheat straws can be used to produce cellulose-based hydrogel products, which can incorporate nitrogen (N) and phosphorus (P) into fertilizer compounds, which, once introduced into the soil, can release these nutrients over time [2]. Other researchers have used rice husk to obtain silica compounds, which were then encapsulated in nanocomposites based on methyl sulfonate cellulose, acrylic acid, and chemical fertilizer-type NPK, to obtain controlled-release fertilizers [3]. Further, Prunomo et al [4] incorporated NKS-type fertilizers in a matrix that contains fly ash, which is a waste product obtained from sugarcane processing, using molasses as a binder.…”

Section: Introductionmentioning

confidence: 99%

Study Regarding the Potential Use of a Spent Microbial Biomass in Fertilizer Manufacturing

Radu

Chirvase²,

Băbeanu

et al. 2020

Agronomy

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A spent biomass, which results from the biopharma industry, is stabilized and functionalized by biosorption with microelements. The efficiency of this new biomaterial was tested in two experiments: (1) In a mixture with soil to determine its effects of the germination capacity of cereals and vegetables, and (2) in a formulation of mixed fertilizers to determine its influence on the development and production of the two types of vegetables. The results obtained during germination experiments performed in pots showed that at a biomass concentration less than 20%, the germination output was greater than 95% and the germination index was almost 1. The experiments performed in land on vegetables (including Solanum lycopersicum and Capsicum annuum) featured six types of fertilizers formulated with new biomaterials. The obtained results indicated that two types of fertilizers (N 10:0:0 and NP 5:5:0), which were formulated with functionalized biomass and featured the microelements Co, Cu, Fe, Mn, and Zn, exhibited significant effects when compared with vegetables cultivated on unfertilized soil surfaces (the untreated variant). The studies regarding the effect of the new fertilizers obtained based on spent biomass from biopharma industry indicate the following: (a) This material, even if it is stabilized and functionalized, cannot be used as such as a germination substrate for vegetables; in addition, it cannot be introduced into soil together with cereals seeds (during the autumn work), because the germination can be affected negatively; (b) the functionalized biomass can be used in the formulation of different types of fertilizers; if these fertilizers are introduced into soil with the autumn plowing, then they may have a positive influence on the yield of some species of vegetable, such as Solanum lycopersicum and Capsicum annum. The new fertilizers have a major environmental impact due to: (1) Removal of waste, which results from pharmaceutical biosyntheses, with significant impact on soil pollution, due to its storage in the form of waste dumps, on the soil; (2) recovery and reinsertion into the natural circuit of nutrients like C, N,

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Slow-release NPK fertilizer encapsulated by carboxymethyl cellulose-based nanocomposite with the function of water retention in soil

Cited by 198 publications

References 41 publications

Novel superabsorbent materials from bacterial cellulose

Novel superabsorbent materials from bacterial cellulose

Carbonaceous microsphere‐based superabsorbent polymer as filler for coating of NPK fertilizer: Fabrication, properties, swelling, and nitrogen release characteristics

Study Regarding the Potential Use of a Spent Microbial Biomass in Fertilizer Manufacturing

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