Biological chromium(VI) reduction using a trickling filter

Dermou, Eftychia; Velissariou, A.; Xenos, D.; Vayenas, D.V.

doi:10.1016/j.jhazmat.2005.06.008

Cited by 97 publications

(58 citation statements)

References 19 publications

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“…This observation has also been made in other studies (Dermou et al, 2005). A. lwoffii was the dominant species in the SA_R culture with other bacterial species, such as P. japonensis (AB008507) and D. lusatiensis (AJ132378), were present as well.…”

Section: Ssupporting

confidence: 86%

“…Advances in the field of environmental microbiology and biotechnology indicate that bacteria (Ahmad et al, 2010;Cheung and Gu, 1990;Congeevaram et al, 2007;Dermou et al, 2005;Gadd, 1990;Garbisu et al, 1998;Stasinakis et al, 2002;Zouboulis et al, 2004), fungi (Congeevaram et al, 2007;Kapoor and Viraraghavan, 1995;Sa, 2001;Sanghi and Sankararamakrishnan, 2009), yeast (Blackwell et al, 1995;Chen and Wang, 2007;Krauter et al, 1996), and algae (Bankar et al, 2009;Muñoz and Guieysse, 2006) either as pure or mixed cultures, can remove, chromium (VI) from aqueous solutions. Different species of Pseudomonas, Sporophyticus, Bacillus, Phanerochaete have been reported to be efficient chromium reducers (Desai et al, 2008;Gopalan and Veeramani, 1994;McLean and Beveridge, 2001;Molokwane et al, 2008;Pogaku and Kulkarni, 2006;Velásquez and Dussan, 2009;Zahoor and Rehman, 2009).…”

Section: Introductionmentioning

confidence: 99%

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The effect of carbon source on microbial community structure and Cr(VI) reduction rate

Tekerlekopoulou

Tsiamis

Dermou

et al. 2010

Biotech & Bioengineering

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In the present work, the effect of the carbon source on microbial community structure in batch cultures derived from industrial sludge and hexavalent chromium reduction was studied. Experiments in aerobic batch reactors were carried out by amending industrial sludge with two different carbon sources: sodium acetate and sucrose. In each of the experiments performed, four different initial Cr(VI) concentrations of: 6, 13, 30 and 115 mg/L were tested. The change of carbon source in the batch reactor from sodium acetate to sucrose led to a 1.3-2.1 fold increase in chromium reduction rate and to a 5- to 9.5-fold increase in biomass. Analysis of the microbial structure in the batch reactor showed that the dominant communities were bacterial species (Acinetobacter lwoffii, Defluvibacter lusatiensis, Pseudoxanthomonas japonensis, Mesorhizium chacoense, and Flavobacterium suncheonense) when sodium acetate was used as carbon source and fungal strains (Trichoderma viride and Pichia jadinii), when sodium acetate was replaced by sucrose. These results indicate that the carbon source is a key parameter for microbial dynamics and enhanced chromium reduction and should be taken into account for efficient bioreactor design.

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Section: Ssupporting

confidence: 86%

Section: Introductionmentioning

confidence: 99%

The effect of carbon source on microbial community structure and Cr(VI) reduction rate

Tekerlekopoulou

Tsiamis

Dermou

et al. 2010

Biotech & Bioengineering

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“…Since then, several researchers have isolated new microorganisms that catalyse Cr(VI) reduction under varying conditions (Ackerley et al, 2004;Chirwa and Wang, 1997a;Ohtake et al, 1990;Ganguli and Tripathi, 2002;Suzuki et al, 1992;Ramírez-Ramírez et al, 2004;Shen and Wang, 1993;Baldi et al, 1990). Other researchers have also observed Cr(VI) reduction in consortium cultures isolated from the environment (Chirwa and Wang, 2000;Stasinakis et al, 2004;Dermou et al, 2005;Chen and Gu, 2005;Chang and Kim, 2007). Cr (VI) reduction has been demonstrated to be cometabolic (not participating in energy conservation) in certain species of bacteria, but is predominantly dissimilatory/respiratory under anaerobic conditions (Ishibashi et al, 1990).…”

Section: Introductionmentioning

confidence: 97%

Chromium (VI) reduction in activated sludge bacteria exposed to high chromium loading: Brits culture (South Africa)

2008

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BiocatalysisBacillus sp. IntroductionHexavalent chromium [Cr(VI)] compounds are used in a wide variety of commercial processes and unregulated disposal of chromium containing effluents has led to the contamination of soil, aquatic sediments, and surface and groundwater environments. Chromium, a steel-grey, lustrous, hard and brittle metal, occurs in nature in the bound form that constitutes 0.1-0.3 mg/kg of the Earth's crust. It has several oxidation states ranging from (ÀII) to (þVI), the trivalent and hexavalent states being the most stable. A maximum acceptable concentration of 50 mg/L for Cr(VI) in drinking water has been established on the basis of health considerations (Kiilunen, 1994). In some American states, the exposure limit for Cr(VI) is as low as 15 mg/L for humans and 10 mg/L for aquatic organisms (Levitskaia et al., 2008) which is below the detection limit for most low cost colorimetric methods. Cr(VI) concentrations above the allowable limit cause cancer in humans and aquatic fauna, and is acutely toxic at much higher concentrations (U.S. EPA, 1978; Federal Register, 2004 A v a i l a b l e a t w w w . s c i e n c e d i r e c t . c o m j o u r n a l h o m e p a g e : w w w . e l s e v i e r . c o m / l o c a t e / w a t r e s ARTICLE IN PRESS0043-1354/$ -see front matter ª

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“…Para cultivo, estes micro-organismos foram dispostos em Erlenmeyers contendo meio de cultura simulando um efluente de curtume e preparado conforme Dermou et al (2005) Para a realização dos experimentos foram construídos dois biorreatores tubulares em escala laboratorial. Um deles possuía ímãs de neodímio de tamanho 10mmx4mmx2mm dispostos ao longo do comprimento do mesmo e, o outro não possuía os ímãs (Figura 1).…”

Section: Materiais E Métodosunclassified

Aplicação De Campo Magnético Em Cultura Mista

Filho¹,

Dias²,

Cardoso³

et al. 2015

Anais Do Congresso Brasileiro De Engenharia Química Em Iniciação Científica - Cobeq IC 2015

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RESUMO -A aplicação de campo magnético em micro-organismos de cultura mista vem sendo utilizada em pesquisas para tratamento de efluentes. Este trabalho utilizou uma cultura mista que já vem sendo estudada no laboratório e adaptada em meio sintético simulando um efluente de curtume. Avaliou-se o comportamento dos micro-organismos presentes nesta cultura durante a aplicação de campo magnético permanente em biorreator com operação em reciclo durante 8 horas de processo e 2:30 h de aplicação de campo. Os resultados da contagem de células viáveis indicaram que os experimentos com e sem a aplicação do campo permaneceram na mesma ordem de grandeza de 10 12 (UFC/mL).

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Biological chromium(VI) reduction using a trickling filter

Cited by 97 publications

References 19 publications

The effect of carbon source on microbial community structure and Cr(VI) reduction rate

The effect of carbon source on microbial community structure and Cr(VI) reduction rate

Chromium (VI) reduction in activated sludge bacteria exposed to high chromium loading: Brits culture (South Africa)

Aplicação De Campo Magnético Em Cultura Mista

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