Biological treatment of different food industrial wastewater by Xanthomonas campestris

Dodić, Jelena: Biological treatment of different food industrial wastewater by Xanthomonas campestris. Review of faculty of engineering : analecta technica Szegedinensia 3-4. pp. 41-46. (2012)

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Abstract

Biological wastewater treatment is certainly one of the most important biotechnological processes, which have been used for over a century to treat municipal and industrial wastewaters. Industrial wastewater causes large-scale environmental problems mainly because of its extremely high organic content. Xanthan biosynthesis is usually performed on substrates containing different carbohydrates and nitrogen sources. These nutrients are often obtained from different raw materials that are intermediate or by-products of various food technologies. One of the greatest factors limiting the use of xanthan in large-scale fermentation processes is the cost of production when compared with similar polymers from algae or plants. The cost of feedstock used for polymer production is area where savings could be made in this respect. The present study examines xanthan production by Xanthomonas campestris under aerobic conditions on different food industrial wastewaters. Cultivation media were prepared to contain same amounts of carbon and nitrogen sources and all experiments were performed simultaneously, so that all stages of the biotechnological process would be carried out under identical conditions. In order to determine success of the performed biosynthesis, yield of xanthan and sugar conversion were determined. From this point of view, similar results were obtained. Also, different viscosities of cultivation media at the end of process were compared. Determined significant differences of viscosities and at the same time similar yield of xanthan suggest that biosynthesized polymers have different quality. High values of sugar and nitrogen conversions advocate that significant decrease of organic content in applied industrial wastewaters.

Item Type: Article
Journal or Publication Title: Review of faculty of engineering : analecta technica Szegedinensia
Date: 2012
Number: 3-4
Page Range: pp. 41-46
ISSN: 1788-6392
Language: angol
Uncontrolled Keywords: Mérnöki tudományok
Additional Information: Bibliogr.: 46. p. ; összefoglalás angol nyelven
Date Deposited: 2016. Oct. 15. 12:24
Last Modified: 2019. Jan. 04. 10:56
URI: http://acta.bibl.u-szeged.hu/id/eprint/11914

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