Cu (II) removal from tequila using an ion-exchange resin

Carreón-Álvarez, Alejandra; Herrera-González, Azucena; Casillas, Norberto; Prado-Ramirez, Rogelio; Estarrón‐Espinosa, Mirna; Soto, Victor; Cruz, W. de la; Bárcena-Soto, Maximiliano; Gómez-Salazar, Sergio

doi:10.1016/j.foodchem.2011.02.004

Cited by 23 publications

(15 citation statements)

References 20 publications

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“…From the above experimental and analytical results, it can be noted that the adsorption capacity of CCS for Cu (II) (65 mg/g) is signifi cantly higher than that of other sewage sludge-derived absorbents, such as sewage sludge carbon (6.7 mg/g) and sewage sludge carbon chemical activation with ZnCl2 (20.6 mg/g) [24]. The adsorption capacity of CCS is similar to that of commercial cation exchange resins [25,26], indicating that CCS is a promising absorbent for removal of heavy metals from wastewater.…”

Section: Adsorption Isotherm Of Cu (Ii) On Ccsmentioning

confidence: 68%

Preparation and Cu (II) Adsorption Characteristics of Carboxymethyl Cross-Linked Sewage Sludge

Wang

Zhang

2016

Pol. J. Environ. Stud.

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Sewage sludge was cross-linked with epichlorohydrin to increase its mechanical strength and applicability as an absorbent material. We investigated the effect of the conditions of the cross-linking reaction on the mechanical strength and Cu (II) adsorption capacity of epichlorohydrin cross-linking sewage sludge (ECS). Experimental results showed that cross-linking can raise signifi cantly the mechanical strength of sewage sludge. To improve the adsorption capacity of ECS, carboxymethyl cross-linked sewage sludge (CCS) with maximal adsorption capacity (65mg/g) for Cu (II) was synthesized from ECS by using chloroacetic acid as the etherifi cation agent. The experimental results showed that the adsorption properties of CCS for Cu (II) could best be described by the pseudo-second order model and Langmuir model, and the adsorption mechanism was ion exchange. Our data suggest that CCS is a promising absorbent for removal of heavy metals from wastewater.

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Section: Adsorption Isotherm Of Cu (Ii) On Ccsmentioning

confidence: 68%

Preparation and Cu (II) Adsorption Characteristics of Carboxymethyl Cross-Linked Sewage Sludge

Wang

Zhang

2016

Pol. J. Environ. Stud.

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“…Carreon‐Alvarez et al . applied ion‐exchange resin and reduced the copper content of tequila from 7.3 to 0.55 mg L −1 , thus placing the product within the standards established by the Mexican legislation (<2 mg L −1 ).…”

Section: Resultsmentioning

confidence: 99%

“…Similar results were obtained by Franco et al (18), who showed that the re-distillation process promoted significant changes, improving the sensory quality of the sugarcane spirit. Carreon-Alvarez et al (19) applied ion-exchange resin and reduced the copper content of tequila from 7.3 to 0.55 mg L À1 , thus placing the product within the standards established by the Mexican legislation (<2 mg L À1 ).…”

Section: Resultsmentioning

confidence: 99%

“…Lachenmeier et al (7) verified that the biggest problem with Mexican tequilas was the methanol concentration, which reached values of 300 mg (100 mL anhydrous alcohol) À1 . Carreon-Alvarez et al (19) reduced the methanol content in tequila from 311 to 212 mg (100 mL anhydrous alcohol) À1 using filters with ion exchange resins, as a palliative measure. The subsequent distillations could be more effective than ion exchange resins in the reduction of the methanol content if applied to other distilled beverages as well as to sugarcane spirit, like tequila.…”

Section: Resultsmentioning

confidence: 99%

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Influence of the number of distillations on the composition of organic sugarcane spirit

et al. 2013

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Sugarcane spirit is the most consumed distilled beverage in Brazil. Currently the manufacturing industries are trying to widen their market and attract new consumers, and thus it has become necessary to elevate the product to national and international quality standards. This study's aim was to determine the influence of subsequent distillations on the composition of organic sugarcane spirit. From mono-distilled organic sugarcane spirit, bi-, tri-, tetra-and penta-distilled sugarcane spirits were obtained, and analysed for the following: relative density, alcoholic degree, volatile acidity, pH, copper, methanol, aldehydes, furfural, esters, ethyl carbamate and higher alcohols. The most relevant results were reductions of 69.57% volatile acidity, 98.4% copper, 40.9% methanol, 71.5% aldehydes, 100% esters, 100% ethyl carbamate and 32.2% higher alcohols in the penta-distilled sugarcane spirit, as compared with the mono-distilled. It was concluded that subsequent distillations would put sugarcane spirit in line with the international standards for distilled beverages.

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“…For tequila in particular, several studies have been directed to the use of different methodologies that have allowed separating and identifying a great number of volatile compounds in the stages of cooking, fermentation and distillation (Arellano, Pelayo, Ramirez, & Rodriguez, 2008;Carreon-Alvarez et al, 2011;Mancilla-Margalli & Lopez, 2002;Mora´n-Marroquı´n, Co´rdo-va, Valle-Rodrı´guez, Estarro´n-Espinosa, & Dı´az-Montan˜o, 2011;Prado-Ramı´rez et al, 2005). For commercial products, investigations have been made to determine the volatile composition in both Silver and matured tequilas (Benn & Peppard, 1996;Lachenmeier, Richling, Lopez, Frank, & Schreier, 2005;Lachenmeier, Sohnius, Attig, & Lopez, 2006;Lopez & Dufour, 1999;Martı´n del Campo et al, 2011;Pen˜a-Alvarez, Capella, Juarez, & Labastida, 2006;Vallejo-Cordoba, Gonzalez-Cordova, & Estrada-Montoya, 2004).…”

Section: Introductionmentioning

confidence: 99%

Physicochemical quality of tequila during barrel maturation. A preliminary study

López-Ramírez¹,

Campo²,

Escalona‐Buendía³

et al. 2013

CyTA - Journal of Food

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Physicochemical quality of tequila during barrel maturation. A preliminary study Calidad fisicoquímica del tequila durante su maduración en barrica. Un estudio preliminar Silver Tequila 100% agave was aged in new oak barrels from four French regions. The evolution of physicochemical parameters regulated by Official Mexican Standard, as well as color, turbidity, total acidity and pH were assayed during 34 weeks of maturation. Analysis of variance (ANOVA) showed significant differences between barrel origin on furan-2-carboxaldehyde, dry extract, color and turbidity; and throughout maturation time on all evaluated parameters, except for total acidity, ethanol, and butan-2-ol. The principal component analysis (PCA) made it possible to separate three different groups corresponding to Silver (S), Aged (A), and tequilas during ripening transition (G), as well as to describe an evolution in two steps. Finally, general discriminant analysis (GDA) made it possible to classify correctly 69% of the samples according to barrel origin and 100% of the samples as G and A tequilas.

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Cu (II) removal from tequila using an ion-exchange resin

Cited by 23 publications

References 20 publications

Preparation and Cu (II) Adsorption Characteristics of Carboxymethyl Cross-Linked Sewage Sludge

Preparation and Cu (II) Adsorption Characteristics of Carboxymethyl Cross-Linked Sewage Sludge

Influence of the number of distillations on the composition of organic sugarcane spirit

Physicochemical quality of tequila during barrel maturation. A preliminary study

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