Elimination of micronutrients from winery wastewater using entrapped grape marc in alginate beads

Abstract

Nowadays, there exists a major concern about the requirement of decreasing the environmental impact of industrial activities. In general, the food industry produces high amount of effluents that must be treated. There are two ways of focusing on the treatment of effluents and residues from food industry. One interesting strategy consists of the revalorization of residues in order to obtain valuable products, and the other approach is the treatment of these effluents using eco-friendly technologies. In this work, a residue of winery industry consisting of grape marc was entrapped in calcium alginate beads in order to obtain a valuable product that could be used as an adsorbent to remove micronutrients from winery effluents in order to avoid eutrophication. Biodegraded grape marc entrapped in calcium alginate beads was able to remove most of the total nitrogen, NH 4 , and NO 3 present in the water and around 60% of Mg, P, K, and total carbon. Actualmente existe una gran preocupación sobre la necesidad de reducir el impacto medioambiental derivado de actividades industriales. En general, la industria alimentaria produce una gran cantidad de efluentes que deben ser tratados. Existen dos formas de enfocar el tratamiento de estos efluentes y residuos. Una estrategia interesante consiste en revalorizar estos residuos con la finalidad de obtener productos de valor. Otro enfoque se centra en su tratamiento utilizando tecnologías amigables con el medioambiente. En este trabajo, el bagazo de uvaresiduo de la industria vitivinícola -ha sido inmovilizado en esferas de alginato cálcico para obtener un producto de valor utilizable como adsorbente, que elimine micronutrientes de los efluentes vitivinícolas evitando así la eutrofización. El bagazo biodegradado, inmovilizado en esferas de alginato, ha eliminado la mayoría del nitrógeno total, NH 4 y NO 3 existente en el agua y alrededor de un 60% de Mg, P, K y carbono total.

Kinetic and morphology study of alginate-vineyard pruning waste biocomposite vs. non modified vineyard pruning waste for dye removal

“…These results are similar to those achieved by some authors using others lignocellulosic residues. Thus, Perez-Ameneiro et al (2014b) found that, the intercept was between 0.325 and 0.172 using a lignocellulosic biocomposite based on composted grape marc.…”

“…Cellulose is composed of β-1,4 linked glucopyranose units, with polymer chains associated by hydrogen bonds forming bundles of fibrils, also called microfibrillar aggregates, where highly ordered crystalline regions alternate with disordered amorphous domains. Therefore, peat and grape marc compost, entrapped in calcium alginate hydrogels, have been proposed for their dye-binding capability from wastewater (Vecino et al, 2013;Perez-Ameneiro et al, 2014b). Nevertheless, peat and composted grape marc have other uses like soil amendments that can prevent their use as bioadsorbents in comparison with the lignocellulosic fraction of vineyard pruning waste.…”

Evaluation of Calcium Alginate-Based Biopolymers as Potential Component of Membranes for Recovering Biosurfactants from Corn Steep Water

“…Biodegraded grape marc entrapped in calcium alginate beads has been previously tested as an eco-adsorbent. For instance, Perez-Ameneiro et al evaluated the use of a biopolymer based on grape marc entrapped in calcium alginate beads for the removal of pigments from an agro-industrial effluent [30] or dye compounds from winery wastewater [35] as well as to remove micronutrients from winery effluents in order to avoid eutrophication [36]. Additionally, an alginate-based polymer with grape marc has also been tested as an eco-adsorbent for removal of copper (II) from aqueous streams [37]; for adsorption of binary mixtures of dyes [38]; and for the removal of cyanide and transition metals from industrial electroplating process waters [39].…”

“…In the case study of micronutrients [36], the calcium alginate-based biopolymer with grape marc removed most of the TN, NH 4 + and NO 3 − existing in the vinasses (wastewater from winery industry) and about 60% of Mg, P, K, and total carbon. Similar results were obtained in the current study, with 66% of Mg, 75% of P, 55% of K and 49% of TOC.…”

Wastewater treatment enhancement by applying a lipopeptide biosurfactant to a lignocellulosic biocomposite

“…On the other hand, lignocellulosic residues such as vineyard pruning waste or grape marc are also a good source of polymeric hydrocarbons, useful in the formulation of adsorbents for the treatment of industrial wastewater effluents (Perez-Ameneiro, Vecino, Barbosa-Pereira, Cruz, & Moldes, 2014;Perez-Ameneiro, Vecino, Vega, et al, 2014;. Biomass-derived biocomposites are more biodegradable and less toxic than those adsorbents obtained by chemical synthesis.…”