1 research outputs found
Utilizaci贸n de albedo deshidratado de citrus para clarificaci贸n de efluentes
De la industrializaci贸n del lim贸n se obtienen muchos subproductos como el jugo concentrado, aceite esencial, c谩scara deshidratada y c谩scara h煤meda. En este trabajo se utiliz贸 el albedo deshidratado de lim贸n para clarificar efluentes, aprovechando la capacidad de absorci贸n de la pectina all铆 presente (Neme,et al 2008). Este residuo de la industria del lim贸n se exporta como pienso para animales. Para su obtenci贸n se extrajo el jugo de lim贸n dejando libre el albedo. Posteriormente se lo sec贸 en una estufa a una temperatura de 60 潞C durante 24 hs para luego triturarlo, obteni茅ndose diferentes granulometr铆as: 54 % 2 mm, 36%1 mm y 10% 0,5 mm. El polvo de albedo de distintas granulometr铆as se coloc贸 en 3 cubas de vidrio de 20 litros. Para evaluar su poder clarificante, se midi贸 la densidad 贸ptica (DO) a 350 nm de longitud de onda (位) a las 24, 48 y 72 hs luego de poner en contacto con el efluentes; observ谩ndose un descenso abrupto de la DO a las 24 hs y permaneciendo casi constante a las 48 y 72 hs de tratado el efluente. El mayor poder clarificante se observ贸 en la granulometr铆a de 0,5 mm; efecto causado por par谩metros relacionados con el tama帽o y forma de las part铆culas, como por ejemplo la estabilidad, sabor, color, absorci贸n, velocidad de disoluci贸n, uniformidad de contenido de la forma.
La reactividad de estos polvos viene dada por la superficie espec铆fica, a menor tama帽o de part铆cula mayor superficie, mayor velocidad de disoluci贸n, mayor absorci贸n; por lo tanto, aumenta la reactividad del polvo y posee superior poder clarificante que se observa a tan solo transcurridos 25 minutos. Las otras granulometr铆as tambi茅n resultaron aclarantes de los efluentes pero despu茅s de transcurridas 24 hs, ninguna de las tres cubas present贸 mal olor. Sin embargo, se observ贸 crecimiento de hongos pasadas las 72 hs en las cubas conteniendo part铆culas de 1 y 2 mm, no as铆 en las de granulometr铆a de 0,5 mm.Many by-products are obtained from the industrialization of lemon, such as concentrated juice, essential oil, dehydrated peel and wet peel. In this work, dehydrated lemon albedo was used to clarify effluents taking advantage of the absorption capacity of pectin present in this lemon fraction. This by-product of the lemon industry is exported as animal feed. To obtain the dehydrated lemon peels, juice was extracted from fresh lemons leaving the albedo free. Subsequently, the peels were dried in a stove at 60 掳C for 24 h and then grinded obtaining different granulometries: 54% 2 mm, 36% 1 mm and 10% 0.5 mm. The albedo powder of different granulometries was placed in 3 glass buckets of 20 liters. To evaluate its clarifying power, the optical density (OD) at 350 nm wavelength (位) was measured 24, 48 and 72 h after being put in contact with the effluents, observing an abrupt decrease of DO at 24 hours and remaining almost constant at 48 and 72 h after treatment of the effluent. The greater clarifying power was observed in the granulometry of 0.5 mm; effect caused by parameters related to the size and shape of the particles, such as stability, taste, color, absorption, dissolution rate, uniformity of content of the form.
The reactivity of these powders is given by the specific surface area, the smaller the particle size, the higher the surface area, the higher the dissolution rate, the higher the absorption. Therefore, it increases the reactivity of the powder and has superior clarifying power that is observed after only 25 minutes. The other granulometries also clarified the effluents but after 24 hours. Even though none of the three buckets had bad smell, fungi growth was observed after 72 h in the buckets containing particles of 1 and 2 mm, but not in that with a particle size of 0.5 mm.Fil: Ju谩rez, Clarisa.Fil: Gonz谩lez, Karina.Fil: Mar铆a, Federico