Rapid synthesis of a corncob-based semi-interpenetrating polymer network slow-release nitrogen fertilizer by microwave irradiation to control water and nutrient losses

Peng, Wen; Han, Yu; Wu, Zhansheng; He, Yueqiu; Ye, Bang‐Ce; Wang, Jun

doi:10.1016/j.arabjc.2017.03.002

Cited by 70 publications

(34 citation statements)

References 40 publications

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“…3(d)), showing greater water absorption, and this is the same as what was stated by Chang et al [8], the increased space in a hydrogel material is caused by a highly hydrophilic carbonyl group that can absorb many water molecules. When applied to agricultural land, a higher water retention capability can reduce the evaporation rate of water and consequently reduce the loss of fertilizer migrating to the soil surface [24]. It should be noted that on the ground, each hydrogel particle is surrounded by soil particles under the limiting pressure from the soil.…”

Section: Synthesis and Characterization Of Superabsorbent Hydrogelsmentioning

confidence: 99%

Synthesis and Characterization of Controlled-Release Urea Fertilizer from Superabsorbent Hydrogels

et al. 2020

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It is very important to develop controlled-release fertilizers to ensure efficiency and environmental protection. This study aims to make a superabsorbent hydrogel-based controlled-release urea fertilizer. Superabsorbent hydrogels were prepared from the cellulose of corn cobs cross-linking with epichlorohydrin, and then an amount of urea as a fertilizer was stored inside the hydrogels (GEL-A). The GEL-A functionalization with carboxy-methyl was also carried out in this study to improve the hydrophilicity of hydrogels (GEL-B). GEL-A and GEL-B were immersed in water at a certain pH and temperature range and the urea concentration released from the hydrogels was monitored by a spectrophotometer. The results showed that the urea released by GEL-A and GEL-B was not much different. Respectively, the urea efficiency of GEL-A and GEL-Bwas around 5.29% and 5.56% for 180 min. The urea released from both hydrogels was not significantly affected by changes in the temperature of the solution. Urea release was influenced by pH, and the rate of urea release of GEL-B was faster than GEL-A, so pH control was needed in the application of this slow-release fertilizer.

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Section: Synthesis and Characterization Of Superabsorbent Hydrogelsmentioning

confidence: 99%

Synthesis and Characterization of Controlled-Release Urea Fertilizer from Superabsorbent Hydrogels

et al. 2020

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“…This product (biochar) can be used as such or it can be encapsulated with cellulose acetate, ethyl cellulose, or alginates to obtain biochar, in which the nutrients (N) are time released in the soil [1]. 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].…”

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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“…The industry of fertilizers must increase the efficiency of its products, improving or developing new types of fertilizers to avoid or reduce environmental pollution. It is considered that an ideal fertilizer should have at least three characteristics: a high percentage of recovery and production; a minimum negative impact on the environment and with a single application of the product should be enough to cover the nutritional requirements during the entire culture period [9][10][11][12][13][14]. According to these characteristics, Slow Release Fertilizers (SRF) have a relevance nowadays.…”

Section: Introductionmentioning

confidence: 99%

“…The obtention of SRF constitutes a technology that meets the three characteristics of an ideal fertilizer. The use of SRF helps preventing soil degradation, can be used to reduce the amount of fertilizer that is applied and make the nutrients available for longer periods of time after application, since they avoid losses due to leaching and volatilization of the fertilizer [3,[9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Preparation of a Slow Release Biofertilizer From a Polymeric Urea-Formaldehyde Matrix (PUFM)

Martinez¹,

Hurtado²,

Gonzalez³

et al. 2019

Phyton

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Fertilizers industry faces the challenge of improving the efficiency of its products either by optimizing the fertilizers in use or by developing new types of them. During the last decade, controlled and slow release technologies have become more important. These technologies aim to increase the efficiency of the applied substance by increasing its action over time and avoiding losses of all kinds (leaching, volatilization). The main purpose of the current study was to obtain a slow release biofertilizer by incorporating microalgae into a polymeric ureaformaldehyde matrix (PUFM). The quantitative analysis of macronutrients and micronutrients in the microalgae was determined using different techniques including titration, UV and Atomic Adsorption Spectroscopy. The matrix and the formulation obtained (PUFM + CHLO) were also characterized by Infrared Spectroscopy (FTIR) and Scanning Electron Microscopy (SEM). The "in vitro" study showed a typical slow release behavior of nitrogen (N), phosphorus (P) and potassium (K) macronutrients. It was also shown that (PUFM+CHLO) formulation has the slowest macronutrients release time with a maximum release of 28%, 26% y 46% for (N-P-K) macronutrients respectively during a period of 30 days. The "in vivo" study exposed the benefits of the biofertilizer formulation (PUFM + CHLO) from conventional commercial fertilizer (CF) (NPK-14-5-12). Due to the presence of nutrients of natural origin in microalgae, (PUFM + CHLO) shows ecological effects which could also developing sustainable agriculture systems.

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Rapid synthesis of a corncob-based semi-interpenetrating polymer network slow-release nitrogen fertilizer by microwave irradiation to control water and nutrient losses

Cited by 70 publications

References 40 publications

Synthesis and Characterization of Controlled-Release Urea Fertilizer from Superabsorbent Hydrogels

Synthesis and Characterization of Controlled-Release Urea Fertilizer from Superabsorbent Hydrogels

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

Preparation of a Slow Release Biofertilizer From a Polymeric Urea-Formaldehyde Matrix (PUFM)

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