Carballo ME, Heydrich M, Rojas N, Salgado I, Romeu B, Manzano AM, Larrea J, Domínguez O, Martínez A, Sánchez MI, Cruz M, Guerra G, Rojas M, Ramos M

Language: English
References: 16
Page: 277-279
PDF size: 158.71 Kb.

ABSTRACT

Contamination of water resources requires of systematic environmental actions, based on integral researches which allow proposing biological process as ecological and economical alternatives in order to decrease its negative impact and to guarantee the integrity of aquatic ecosystems. The objetives of this paper were to determine the microbial and chemical water pollution in Almendares river, and to evaluate the microbial capacity for decrease or eliminate chemical contaminants present on wastewaters, natural ecosystems and industrial wastes. The microbiological and chemical pollution of the Almendares basin exceeded maximum permissible values for recreational waters according to Cuban standards, respect to total and faecal coliforms, to the presence of clinical significance multiresistant microorganisms against antimicrobial agents, and to nitrates, ammonium, phosphates and heavy metals concentrations. It was demonstrated the potential of monocultures and microbial consortiums for the elimination of heavy metals and the capacity of White Rot Fungi to degrade industrial textil colorants. The results indicate the contamination degree in freshwater systems in Cuba, a threat for biodiversity and a risk for human health. Therefore, these results permit to dispose of a microbial collection which represents potential candidates for biotechnological applications, which contribute to the protection of the environment and the preservation of waters as a valuable natural resource.

REFERENCES

1. García-Armisen T, Prats J, Servais P. Comparison of culturable fecal coliforms and Escherichia coli enumeration in freshwaters. Can J Microbiol. 2007;53(6):798- 801.

2. Majeau JA, Brar SK, Tyagi RD. Laccases for removal of recalcitrant and emerging pollutants. Bioresour Technol. 2010;101(7): 2331-50.

3. Guo H, Luo S, Chen L, Xiao X, Xi Q, Wei W, et al. Bioremediation of heavy metals by growing hyperaccumulaor endophytic bacterium Bacillus sp. L14. Bioresour Technol. 2010;101(22):8599-605.

4. NC 27: 1999. Vertimiento de aguas residuales a las aguas terrestres y al alcantarillado: Especificaciones. La Habana: Oficina Nacional de Normalización; 1999. Available in: http://biblioteca.idict. villaclara.cu/UserFiles/File/Normateca/ NC-27-99%20Vertimiento.pdf

5. NC 22: 1999. Lugares de baño en costas y en masas de aguas interiores. Requisitos higiénicos sanitarios. La Habana: Oficina Nacional de Normalización. 1999. http://biblioteca.idict.villaclara.cu/ UserFiles/File/Normateca

6. Ramteke PW, Tewari S. Serogroups of Escherichia coli from drinking water. Environ Monit Assess. 2007;130(1-3): 215-20.

7. Cheung KC, Poon BH, Lan CY, Wong MH. Assessment of metal and nutrient concentrations in river water and sediment collected from the cities in the Pearl River Delta, South China. Chemosphere. 2003; 52(9):1431-40.

8. Wang J, Chen C. Biosorbents for heavy metals removal and their future. Biotechnol Adv. 2009;27(2):195-226.

9. Vijayaraghavan K, Yun YS. Bacterial biosorbents and biosorption. Biotechnol Adv. 2008;26(3):266-91.

10. Singh S, Lee W, Dasilva NA, Mulchandani A, Chen W. Enhanced arsenic accumulation by engineered yeast cells expressing Arabidopsis thaliana phytochelatin synthase. Biotechnol Bioeng. 2008; 99(2):333-40.

11. Kostal J, Yang R, Wu CH, Mulchandani A, Chen W. Enhanced arsenic accumulation in engineered bacterial cells expressing ArsR. Appl Environ Microbiol. 2004; 70(8):4582-7.

12. Wang JL, Chen C. Biosorption of heavy metals by Saccharomyces cerevisiae: a review. Biotechnol Adv. 2006 Sep-Oct; 24(5):427-51.

13. Vullo DL, Ceretti HM, Daniel MA, Ramírez SA, Zalts A. Cadmium, zinc and copper biosorption mediated by Pseudomonas veronii 2E. Bioresour Technol. 2008;99(13):5574-81.

14. Pessoa AK, Tauk-Tornisielo SM, Naves R, De Franceschi D. Performance of the constructed wetland system for the treatment of water from the Corumbataí river. Braz Arch Biol Technol. 2008; 51(6):1279-86.

15. Moreno M, Naranjo B, Koch A. Evaluación de dos métodos para la reducción de nitrógeno, fósforo y DQO de aguas residuales, mediante un cultivo axénico de cianobacterias y un consorcio microbiano, inmovilizados y en suspensión. Rev Ciencia. 2010;13(1):55-61.

16. Vanhulle S, Trovaslet M, Enaud E, Lucas M, Sonveaux M, Decock C, et al. Cytotoxicity and genotoxicity evolution during decolorization of dyes by White Rot Fungi. World J Microbiol Biotechnol. 2008;24(3):337-44.