Synthesis, characterization and application of hydrogel derived from cellulose acetate as a substrate for slow-release NPK fertilizer and water retention in soil

Senna, André M.; Carmo, Janaína Braga do; Silva, José Mauro Santana da; Botaro, Vagner Roberto

doi:10.1016/j.jece.2015.03.008

Cited by 67 publications

(48 citation statements)

References 13 publications

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“…In the spectra, absorption peaks characteristic of the expected functional groups are visible, in general agreement with published data [19,20,23,24]. The broad absorption band at 3260 cm −1 is ascribed to hydrogen bond -OH stretching vibration.…”

Section: Preprints (Wwwpreprintsorg) | Not Peer-reviewed | Posted: supporting

confidence: 89%

“…Recently, the diverse applications of superabsorbent polymers are still being expanded to many fields including agriculture and sealing composites, horticulture, drilling fluid additives, artificial snow, medicine, and so on [18][19][20][21]. Superabsorbents have been used to help conserve water in a variety of agriculture and horticultural applications [22][23][24]. The use of SAP for stabilizing soil structure resulted in increasing infiltration and reducing water use and soil erosion [25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

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Valorization of Superabsorbent Polymers from Used Disposable Diapers as Soil Moisture Conditioner

Orozco¹,

Timoteo-Cruz²,

Torres-Blancas³

et al. 2017

Preprint

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This study was conducted to explore the potential of superabsorbent polymers (SAPs) from used disposable diapers as soil moisture conditioner. Swelling behavior of the proposed hydrogel in response to external stimuli such as salt solutions, temperature and pH was studied. In addition, laboratory experiments were carried out to evaluate the effects of incorporation hydrogel on germination of bean (Phaseolus vulgaris L.) and pumpkin (C. pepo) seeds. The structure of the superabsorbent was characterized by Fourier transform infrared spectroscopy (FTIR). The results indicate that the proposed SAP exhibited a maximum swelling capacity of 189 g⋅g -1 of dry gel. It was observed that the swelling capacity decreased with an increase in the ionic strength of the swelling medium. When this SAP was mixed with sandy soil, the mixture was able to lose water more slowly. The seeds germination and seedling growth was remarkably influenced by the application of 0.5, 1.0 and 2.0 w/w% of SAP compared to the untreated soil. Therefore, it follows that it is possible to take advantage of SAPs property from used disposable diapers to retain the moisture in soil as an alternative to value the use of such waste, showing that it has potential for diverse applications in agriculture.

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Section: Preprints (Wwwpreprintsorg) | Not Peer-reviewed | Posted: supporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Valorization of Superabsorbent Polymers from Used Disposable Diapers as Soil Moisture Conditioner

Orozco¹,

Timoteo-Cruz²,

Torres-Blancas³

et al. 2017

Preprint

View full text Add to dashboard Cite

show abstract

“…The formulation PUFM + CHLO retains more nutrients for a longer period of time. It can produce a slower assimilation of the nutrients for the plant, decreasing the possible losses of solubility, the number of applications of the product and a positive economic and environmental effect, according to [45]. Fig.…”

Section: Statistical Studies Of Release Of % K2o Of "In Vitro" Studiesmentioning

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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“…Urea Chitosan [25][26][27] Polyhydroxybutyrate (phb), ethyl cellulose Polyethylene, polyvinyl acetate, polyurethane, polyacrylic, polylatic acid KH 2 PO 4 Chitosan, gellan gum [28] NPK Chitosan [29][30][31] Cellulose, natural gum, rosin, waxes…”

Section: Agrochemical Used Polymer Used Referencementioning

confidence: 99%

Polymers and its applications in agriculture

et al. 2017

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Graphical Abstract RbstractPolymers are a class of soft materials with numerous and versatile mechanical and chemical properties that can be tuned specific to their application. Agriculture is an expanding area due to the requirement for indispensable food to meet the demands of a growing global population. Consequently, development of technology to improve the quality of the soil and agriculture manages is still under development. Intelligent agricultural supplies (controlled or slow release agrochemicals and superabsorbents) and biosorbents contribute to an expanding niche using technology from polymers. This review elucidates the state-of-the-art and will discuss some important aspects of using polymers in intelligent fertilizers, as well as superabsorbent, biosorbent and biodegradation processes in agriculture that are environmentally, technically, socially, and economically sustainable.

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Synthesis, characterization and application of hydrogel derived from cellulose acetate as a substrate for slow-release NPK fertilizer and water retention in soil

Cited by 67 publications

References 13 publications

Valorization of Superabsorbent Polymers from Used Disposable Diapers as Soil Moisture Conditioner

Valorization of Superabsorbent Polymers from Used Disposable Diapers as Soil Moisture Conditioner

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

Polymers and its applications in agriculture

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