Effect of ph and nutrient starvation on biodegradation of azo dyes by &lt;i&gt;Cellulomonas&lt;/i&gt; sp.

Oranusi, NA; Ogugbue, Chimezie Jason

doi:10.4314/ajazeb.v6i1.41176

Cited by 4 publications

(5 citation statements)

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“…Moreover decolourisation and degradation can also detoxify the effluent effectively without leaving any residues [31]. Microbial degradation of azo dyes by extra cellular enzymes in Pseudomonas sp., and Pseudomonas luteola and Mycobacterium avium has already been reported [32]. Indvidual and synergistic effects of B.cereus and Pseudomonas sp.…”

Section: Discussionmentioning

confidence: 95%

Isolation, Identification And Characterisation Of Dye-Adapted Bacteria From Textile Effluents Mixed With Sewage Released Into The River Amaravathy, Karur, Tamilnadu, India.

Karthikeyan¹,

Anbusaravanan²

2013

IOSR-JESTFT

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Section: Discussionmentioning

confidence: 95%

Isolation, Identification And Characterisation Of Dye-Adapted Bacteria From Textile Effluents Mixed With Sewage Released Into The River Amaravathy, Karur, Tamilnadu, India.

Karthikeyan¹,

Anbusaravanan²

2013

IOSR-JESTFT

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“…4). Further an efficiency of 98 % (with TiO 2 P-25/Cu as a catalyst in 80 min), is significantly much higher for similar studies on biodegradation of Orange II by Sharma et al (2009) (85 % dye removal in 5 days for 100 ppm Concentration, using Phanerochaete chrysosporium) and Oranusi and Ogugbue (2005) (79.29 % decolorization efficiency using Pseudomonas sp.). Heterogeneous photocatalysis followed the pseudo-firstorder kinetics for OII degradation (Fig.…”

Section: Heterogeneous Photocatalysismentioning

confidence: 87%

Photocatalytic degradation of azo dye Orange II in aqueous solutions using copper-impregnated titania

Divya

Bansal

Jana

2013

Int. J. Environ. Sci. Technol.

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During dyeing process, industries consume large quantity of water and subsequently produce large volume of wastewater. This wastewater is rich in color and contains different dyes. Orange II is one of them. In this article, metal-impregnated TiO 2 P-25 catalyst was used to enhance the photocatalytic degradation of Orange II dye. Photodegradation percentage was followed spectrophotometrically by the measurements of absorbance at k max = 483 nm. The effect of copper-impregnated TiO 2 P-25 photocatalyst for the degradation of Orange II has been investigated in terms of percentage removal of color, chemical oxygen demand (COD) and total organic carbon (TOC). As such 98 % color removal efficiency, 97 % percentage removal of COD and 89 % percentage removal of TOC was achieved with TiO 2 P-25/Cu catalysts under typical conditions. Copper-impregnated TiO 2 P-25 photocatalyst showed comparatively higher activity than UV/ H 2 O 2 homogeneous photodegradation. The relative electrical energy consumption for photocatalytic degradation was considerably lower with TiO 2 P-25/Cu photocatalyst than that with homogeneous photodegradation. Transmission electron microscopic analysis was used for catalyst characterization.

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“…Direct Blue 71 by Pseudomonas sp. under aerobic conditions was investigated as a function of pH and the presence of nutrients (nitrate and sulfate) by Oranusi and Ogugbue . The highest rate of decolorization was 72.4%, and the rate decreased with increasing concentration of nitrate and sulfate.…”

Section: Introductionmentioning

confidence: 99%

Anion-Exchange Resins for C.I. Direct Blue 71 Removal from Aqueous Solutions and Wastewaters: Effects of Basicity and Matrix Composition and Structure

Wawrzkiewicz

2014

Ind. Eng. Chem. Res.

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In this work, eight ion exchangers with different functional groups and various polymeric matrixes (Amberlite IRA 67, Lewatit MonoPlus MP 62, Lewatit MonoPlus MP 64, Amberlite IRA 458, Amberlite IRA 900, Amberlite IRA 958, Lewatit MonoPlus MP 500, and Lewatit MonoPlus M 500) were used for the removal of C.I. Direct Blue 71 textile dye from aqueous solutions and wastewaters. For comparison, the sorption parameters of the low-cost sorbent prepared from orange peel were also measured. The sorption process of the dye was investigated by the column and batch sorption methods. High values of the monolayer sorption capacity (1630.6 mg/g), working ion-exchange capacity (13 mg/mL), and total ion-exchange capacity (128 mg/mL) were obtained for the macroporous anion exchanger Amberlite IRA 958 with quaternary ammonium functionalities. The amount of C.I. Direct Blue 71 retained by Amberlite IRA 958 was found to be dependent on the initial dye concentration and the phase contact time. The solution pH and salt (NaCl and Na2SO4) and anionic surfactant (SDS) concentrations do not influence the anion-exchange resin performance, whereas the presence of the cationic surfactant (CTAB) decreased the dye sorption on Amberlite IRA 958 significantly. Desorption of the dye occurred with 85.4% yield using 1 M NaOH in methanol. The results obtained in the purification of raw wastewaters confirmed that Amberlite IRA 958 can be a promising adsorbent for the removal of textile dyes from wastewaters of different types.

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Effect of ph and nutrient starvation on biodegradation of azo dyes by <i>Cellulomonas</i> sp.

Cited by 4 publications

References 0 publications

Isolation, Identification And Characterisation Of Dye-Adapted Bacteria From Textile Effluents Mixed With Sewage Released Into The River Amaravathy, Karur, Tamilnadu, India.

Isolation, Identification And Characterisation Of Dye-Adapted Bacteria From Textile Effluents Mixed With Sewage Released Into The River Amaravathy, Karur, Tamilnadu, India.

Photocatalytic degradation of azo dye Orange II in aqueous solutions using copper-impregnated titania

Anion-Exchange Resins for C.I. Direct Blue 71 Removal from Aqueous Solutions and Wastewaters: Effects of Basicity and Matrix Composition and Structure

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