Development of new composites materials, carriers of active agents, from biodegradable polymers and wood

Mortain, Ludovic; Dez, Isabelle; Madec, Pierre‐Jean

doi:10.1016/j.crci.2004.03.006

Cited by 20 publications

(11 citation statements)

References 17 publications

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“…Mismanagement of fertilizer, whether organic or inorganic, used in conventional agriculture is well known in inefficiencies of plant nutrient use, leading to a loss in farmer profits, potential damage to the environment, and insufficient use of energy (Mortain et al 2004). Nutrient leaching in soils, with low nutrient retention capacity causes low crop yields and contaminates the ground water (Nelson and Logan 1983;Rao 1991).…”

Section: Introductionmentioning

confidence: 98%

Nutrient-impregnated charcoal: an environmentally friendly slow-release fertilizer

et al. 2007

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The widespread contamination of surface and ground water quality from the heavy use of fertilizer in modern agriculture is the current concern. Therefore, this study was carried out to develop a slow-release fertilizer using charcoal. The morphology of the charcoal impregnated fertilizer was investigated by scanning electron microscopy (SEM). This study also evaluated the release patterns of N, P, and K from impregnated charcoal using a simulated soil solution and distilled water as leaching solutions. The patterns of N, P, and K releases were examined in both static and continuous-flow conditions for 360 h. Releases of N, P, and K from impregnated charcoal were found to be slow and steady. However, the release trends of N, P, and K were higher in soil solution than distilled water under both the above conditions. Dissolution occurred when N, P, and K were released in the above leached solutions. As a result, the fertilizer impregnated charcoal could be developed as slow-release type fertilizer to minimize the contamination.

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Section: Introductionmentioning

confidence: 98%

Nutrient-impregnated charcoal: an environmentally friendly slow-release fertilizer

et al. 2007

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“…However, these matrices are not very biodegradable, so they have to be removed from the field once they have acted to avoid toxicity problems. A possible alternative to these SAP matrices is the use of biodegradable superabsorbent (bio)polymeric (SAB) matrices, which have high biodegradability and no toxicity …”

Section: Introductionmentioning

confidence: 99%

“…A possible alternative to these SAP matrices is the use of biodegradable superabsorbent (bio)polymeric (SAB) matrices, which have high biodegradability and no toxicity. 9 Among all the materials that can be used to elaborate SAB matrices, proteins have technological, economic, and environmental advantages. On the one hand, there is a considerable potential to modulate their properties due to their excellent variability in amino acid composition, the wide range of potential formulations, and the wide variety of applicable processing techniques.…”

Section: Introductionmentioning

confidence: 99%

Development of superabsorbent soy protein‐based bioplastic matrices with incorporated zinc for horticulture

et al. 2019

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BACKGROUND The use of superabsorbent materials in horticulture has spread recently. These materials, which can retain water and release it as crops need it, have strong advantages such as the efficient use of water in periods of drought. However, these materials are made of synthetic polymers, which present problems of degradability and, sometimes, toxicity. For this reason, the main objective of this work is the development of biodegradable superabsorbent bioplastic (SAB) matrices using a soy protein isolate (SPI) as raw material. Zinc is also incorporated into these bioplastic matrices as an essential micronutrient for plants, to increase their added value. RESULTS The incorporation of zinc chelated with 2,2′,2″,2‴‐(Ethene‐1,2‐diyldinitrilo)tetraacetic acid (Zn EDTA) (a salt with which the micronutrient is incorporated) into soy protein‐based bioplastic matrices improved their superabsorbent capacity and provided a controlled release of water and nutrients to the crops. CONCLUSIONS The results show the strong potential for the use of these bioplastic matrices in horticulture as superabsorbent materials that can release nutrients in a controlled manner. © 2019 Society of Chemical Industry

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“…However, little information is available on blended biochar pellets as a slow release fertilizer, which is required to allow nutrients to flow slowly from the soil during the cultivation period. It supplies most nutrients into the crop without leaching and denitrification losses [25] to increase profits and minimize environmental destruction [26].…”

Section: Introductionmentioning

confidence: 99%

Optimum Method Uploaded Nutrient Solution for Blended Biochar Pellet with Application of Nutrient Releasing Model as Slow Release Fertilizer

2019

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The nutrient releasing characteristics of a blended biochar pellet comprising a mixture of biochar and pig manure compost ratio (4:6) uploaded with nitrogen (N), phosphorus (P) and potassium (K) nutrient solutions were investigated with the application of a modified Hyperbola model during a 77-day precipitation period. The experiment consisted of five treatments, i.e., the control, as 100% pig manure compost pellet (PMCP), a urea solution made at room temperature (TN), a urea solution heated to 60 °C (HTN), N, P and K solutions made at room temperature (TNPK), and N, P and K solutions heated to 60 °C (HTNPK). The cumulative ammonium nitrogen (NH4-N) in the blended biochar pellets was slow released over the 77 days of precipitation period, but nitrite nitrogen (NO3-N) was rapidly released, i.e., within 15 days of precipitation (Phase I), close behind on a slower release rate within the final precipitation (Phase II). Accumulated phosphate phosphorus (PO4-P) concentrations were not much different, and slowly released until the final precipitation period, while the highest accumulated K amount was 2493.8 mg L−1 in the TNPK at 8 days, which then remained at a stage state of K. Accumulated silicon dioxide (SiO2) concentrations abruptly increased until 20 days of precipitation, regardless of treatments. For the application of the releasing model for nutrient releasing characteristics, the estimations of accumulated NH4-N, NO3-N, PO4-P, K and SiO2 in all the treatments were significantly (p < 0.01) fitted with a modified Hyperbola model. These findings indicate that blended biochar pellets can be used as a slow release fertilizer for agricultural practices.

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Development of new composites materials, carriers of active agents, from biodegradable polymers and wood

Cited by 20 publications

References 17 publications

Nutrient-impregnated charcoal: an environmentally friendly slow-release fertilizer

Nutrient-impregnated charcoal: an environmentally friendly slow-release fertilizer

Development of superabsorbent soy protein‐based bioplastic matrices with incorporated zinc for horticulture

Optimum Method Uploaded Nutrient Solution for Blended Biochar Pellet with Application of Nutrient Releasing Model as Slow Release Fertilizer

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