Chitin sponge, extraction procedure from shrimp wastes using green chemistry

Flores, Ronny; Barrera-Rodríguez, Susana; Shirai, Kohji; Durán‐de‐Bazúa, Carmen

doi:10.1002/app.26093

Cited by 16 publications

(8 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The mixed composts made of crab or shrimp wastes used in our study originally contained chitin, which could hardly be classified in a biochemical fraction using the NDF-ADF-ADL procedure. Chitin is a poly (N-acetyl-D-glucosamine) insoluble in water and in most organic solvents because of strong H bonds between polymer chains (Flores et al 2006). However, the oligomeric chitin formed during composting is water soluble and easily hydrolyzed (Roy et al 1997;Labrie et al 2001).…”

Section: Sample Preparation and Analysesmentioning

confidence: 99%

Biological Stability of Carbon and Nitrogen in Organic Products and Crop Residues using Fourier-Transform Near-Infrared Reflectance Spectroscopy

Tremblay

Nduwamungu

Parent

et al. 2010

Communications in Soil Science and Plant Analysis

View full text Add to dashboard Cite

Lignin plus cutin (LIC) content and biological stability index (BSI) are well-recognized indexes of potentially recalcitrant carbon (C) in organic products, and C / nitrogen (N) and lignin/N ratios have been related to potentially mineralizable N (PMN).Our objective was to use Fourier-transform near-infrared (FT-NIR) spectroscopy to estimate PMN and BSI of plant residues, composts, and manures. We also evaluated FT-NIR for determining the C/N, LIC/N, and BSI/N ratios as indexes of N mineralization in selected organic products. We analyzed 148 organic products for biochemical composition and total C and N. A subset of 10 products was incubated in a sandy soil to determine PMN. The FT-NIR successfully determined lignin and cutin (LIC) and BSI from r 2 , the ratio of prediction to standard deviation, and the ratio error range criteria. The PMN was less closely related to the C/N ratio (r 2 = 0.64) than the BSI/N (r 2 = 0.84) and LIC/N (r 2 = 0.87) ratios. There was some N immobilization at an early stage of incubation when C/N, LIC/N, and BSI/N ratios exceeded 14, 10, and 15, respectively. There is a need to characterize a larger number of organic compounds in the soluble and LIC fractions to improve the BSI equation.

show abstract

Section: Sample Preparation and Analysesmentioning

confidence: 99%

Biological Stability of Carbon and Nitrogen in Organic Products and Crop Residues using Fourier-Transform Near-Infrared Reflectance Spectroscopy

Tremblay

Nduwamungu

Parent

et al. 2010

Communications in Soil Science and Plant Analysis

View full text Add to dashboard Cite

show abstract

“…Por lo tanto, métodos de extracción verde son empleados debido a su naturaleza respetuosa con el ambiente. Dentro de este grupo se encuentran los procesos de extracción enzimáticos (Lopes et al, 2017;Younes et al, 2014) y procesos donde el uso de ácidos y álcalis son remplazados por solventes menos drásticos (Flores et al, 2007;Tolesa et al, 2019). En este sentido, Barrera-Rodríguez et al (2011) y Flores-Ortega et al (2006, obtuvieron películas y esponjas de quitina a partir de residuos de camarón usando un disolvente compuesto por metanol, agua y cloruro de calcio para sustituir el uso de HCl y NaOH en los procesos de desmineralización y desproteinización.…”

Section: Introductionunclassified

Adsorción De Triazinas Por Quitosana Obtenida De Residuos De Camarón Empleando Una Mezcla De Cloruro De Calcio/Metanol/Agua Como Disolvente

Borja-Urzola

Bernal‐González

García-Gómez

et al. 2020

View full text Add to dashboard Cite

En este estudio se evaluó la capacidad de adsorción de la quitosana obtenida de residuos de camarón previamente caracterizada frente a herbicidas de la familia de las triazinas. La extracción de quitina y la obtención de quitosana se realizó empleando: un disolvente patentado por la Universidad Nacional Autónoma de México, el disolvente MAC-141© (este disolvente es una mezcla estequiométrica de 1 mol de metanol, 4 moles de agua y 1 mol de cloruro de calcio), ultrasonido y temperatura. La caracterización del compuesto final se realizó por análisis elemental, espectroscopía infrarroja, microscopía electrónica de barrido, análisis termogravimétrico y resonancia magnética nuclear. El uso del disolvente MAC-141©, permitió obtener quitosana con un porcentaje de desacetilación en un rango del 40-44 %, mientras que la caracterización química mostró que se obtuvo un sólido estable a temperaturas inferiores a los 280 °C, con poros en la superficie. La quitosana adsorbió las triazinas disueltas en agua a un pH de 3,6 y concentraciones cercanas a 1 mg/L.

show abstract

“…28 It was shown that chitin is soluble in 9% solution of lithium chloride in 1-methyl-2-pyrrolidinone (NMP) or N,N-dimethylacetamide (DMAc). 31 Moreover, it has to be pointed out that chitin is very often confused with chitosan; indeed, chitosan is prepared by deacetylation and depolymerisation of native chitin, however, one cannot consider these compounds as substitutes and should recognize chitosan as soluble derivative of chitin. Destabilized intra-and inter-molecular hydrogen bonds result in a change of chitin crystalline structure and make it soluble in Li + /NMP solution.…”

Section: Introductionmentioning

confidence: 99%

Towards sustainable power sources: chitin-bound carbon electrodes for electrochemical capacitors

2015

View full text Add to dashboard Cite

Chitin -a naturally occurring biopolymer -was employed for the first time as binder of carbon electrodes and studied in electrochemical capacitor. Chitinbound electrodes have shown excellent performance in neutral aqueous electrolyte up to 5 A g -1 current load with capacitance retention of ca. 80% of initial value for mild regimes. This manuscript reports on the electrochemical behaviour of commercially available activated carbon (Supra 30 NORIT) bound with chitin (10% wt.) in the form of pellets, operating in two different aqueous electrolytes, i.e. 1M Li 2 SO 4 and 1M KI solutions. It has been found that, for the 1M Li 2 SO 4 solution, the carbon electrodes demonstrate moderate capacitance value of 65 F g -1 at 1 A g -1 current density. In 1M KI solution merging electrical double-layer capacitance and faradaic contribution of the iodide/iodine redox couple, at the same current load, the capacitance was of 175 F g -1 and it significantly increased with cycling to 260 F g -1 in case of the chitin binder, and 300 F g -1 for the PTFE-bound electrodes taking into account the total charge supplied during capacitor discharging. Moreover, for the 1M Li 2 SO 4 solution, the chitin-bound electrodes display slightly better charge propagation than the PTFEbound ones, whereas for the 1M KI solution, the energy of the capacitor has been improved by 1 Wh kg -1 . Considering the rather negative impact of the commonly used binding fluoropolymers on the environment, chitin may become a great alternative for development of cheap and environmentally benign 2 electrochemical capacitors, while preserving their mechanical and electrochemical performance. Additionally, fluorine-based (e.g. PVdF or PTFE) electrodes are more hydrophobic and thus electrolyte penetration into the bulk of electrodes is unfavoured. Noteworthy, the formation of a chitin complex with electrochemically generated iodine, which has a tendency to leave the system, may enhance the reversibility of the iodide/iodine redox couple and improve both the capacitance value as well as the cycle life. 11 negligible difference in pore-blocking when compared to PTFE-bound electrode.This suggest that -similarly to PTFE -chitin has an impact on the specific surface area, but there is still a significant part of microporosity accessible for ions from electrolyte solution. Fig. 3. (A) Nitrogen sorption isotherms of Supra 30, PTFE-bound electrode, and chitin-bound electrode (B) pore size distribution of materials estimated by 2D-NDLFTAs mentioned before, the application of chitin as a binder could be an interesting approach to develop environmentally-friendly and safe 18 formation 39 ; this complex may trap the iodine in the chitin structure according to mechanism already deeply investigated and presented in Fig. 8, and enhance the cyclability by reversible redox reaction of iodine to (poly)iodides.On the other hand, if to consider only the slope of discharge profile, i.e. pure electrostatic attraction, the capacitance value remains stable, at the level of 160 F g -1 .

show abstract

Chitin sponge, extraction procedure from shrimp wastes using green chemistry

Cited by 16 publications

References 40 publications

Biological Stability of Carbon and Nitrogen in Organic Products and Crop Residues using Fourier-Transform Near-Infrared Reflectance Spectroscopy

Biological Stability of Carbon and Nitrogen in Organic Products and Crop Residues using Fourier-Transform Near-Infrared Reflectance Spectroscopy

Adsorción De Triazinas Por Quitosana Obtenida De Residuos De Camarón Empleando Una Mezcla De Cloruro De Calcio/Metanol/Agua Como Disolvente

Towards sustainable power sources: chitin-bound carbon electrodes for electrochemical capacitors

Contact Info

Product

Resources

About