Toxicity evaluation of reactive dyestuffs, auxiliaries and selected effluents in textile finishing industry to luminescent bacteria Vibrio fischeri

Wang, Chunxia; Yediler, Ayfer; Lienert, Doris; Wang, Zijian; Kettrup, A.

doi:10.1016/s0045-6535(01)00086-8

Cited by 221 publications

(126 citation statements)

References 20 publications

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“…Our previous investigations indicated that the first by-products after short-term ozonation are not to be underestimated since they might have higher toxic potential than their original compounds (Wang et al, 2002). In the present study a commonly used azo reactive dye, Remazol Black 5 was chosen as a representative model compound to obtain detailed information on the degradation products during various ozonation period and to evaluate their potential toxic effect on microorganisms and rat hepatoma cells by applying BOD 28 biological degradation test, and two toxicity assays namely the bioluminescence test and the neutral red (NR) cytotoxicity test.…”

Section: Introductionmentioning

confidence: 99%

Ozonation of an azo dye C.I. Remazol Black 5 and toxicological assessment of its oxidation products

et al. 2003

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The effect of ozonation (20.5 mg l À1 ) on the degradation processes of an azo dye, Remazol Black 5 (RB5; CI) was studied. Conventional parameters such as chemical oxygen demand (COD), total organic carbon (TOC), pH, conductivity, colour removal, biodegradability (BOD 5=28 ), and toxic potential of the dye and its degradation products were monitored during the process. The results obtained indicated that ozonation is a highly effective way to remove the colour of a corresponding dye solution. However, a considerable organic load still remained as indicated by high COD and TOC residues. The COD, TOC reductions were about 40% and 25% for 6 h ozonation of 2 g l À1 RB5 aqueous solution. During the ozonation process the rapid decrease of pH and the sharp increase of conductivity indicated the formation of acidic by-products and small fragments and ions which were identified by high performance ion chromatography. The BOD 28 data revealed that first by-products after partial ozonation (10-150 min) of RB5 were more biodegradable than the parent compound and ozonation can enhance the biodegradability of azo dyes. During the first 150 min of total 360 min of oxidation, the formation of first by-products with high toxic potential took place as it could be confirmed by two acute toxicity-screening tests, the bioluminescence test (Vibrio fischerii) and the neutral red cytotoxicity assay (rat hepatoma cells). The significant enhancement of microbial biodegradability after long-term ozonation could also be seen as a decrease of toxic intermediates in correlation with the ozonation time as indicated in BOD 28 biological degradation test results.

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Section: Introductionmentioning

confidence: 99%

Ozonation of an azo dye C.I. Remazol Black 5 and toxicological assessment of its oxidation products

et al. 2003

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“…2 and 3, and in Table 1. Values of percentage inhibition of relative luminescence above 0.2 were assumed as toxic effects to V. fischeri (Wang et al 2002), as shown in Fig. 2.…”

Section: Resultsmentioning

confidence: 99%

Rainwater toxicity and contamination study from São Paulo Metropolitan Region, Brazil

Martins

Abessa

Fornaro

et al. 2013

Environ Monit Assess

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Wet deposition is an important process that removes pollutants from the atmosphere and transfers them to waters and soil. The goal of this study was to assess the biological effects of the atmospheric contamination of rainwater in the metropolitan area of São Paulo (MASP) using Daphnia similis, Ceriodaphnia dubia, and Vibrio fischeri. Experimental assays were carried out according to standard toxicity methodology. Twenty-three rainwater samples were collected from October 2007 to December 2008, at the Nuclear Research Institute (IPEN), in MASP. Major ions were determined by ionic chromatography, which showed NH 4 + and NO 3 − as prevalent ions. Ecotoxicological results confirmed toxic potential of rainwater, as all samples were toxic to D. similis and C. dubia. The V. fischeri luminescence reduction confirmed those negative effects of rainwater and percentage inhibition of relative luminescence ranged from 0.2 to 0.9 for 16 samples. Worse conditions were observed during the rainy season, suggesting convective rains are more effective in transferring contaminants and toxicity from atmosphere to surface.

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“…The wet processes include scouring, singeing and dyeing which use a large amount of water. Among this process dyeing requires immense amount of water which involves changing the color of the textile spun (Wang et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

Exploration of Environmental Friendly Adsorbents for Treatment of Azo Dyes From Textile Wastewater and Its Dosage Optimization

Khan¹,

Rehman²,

Rashid³

et al. 2017

Earth sci. Pak.

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Toxicity evaluation of reactive dyestuffs, auxiliaries and selected effluents in textile finishing industry to luminescent bacteria Vibrio fischeri

Cited by 221 publications

References 20 publications

Ozonation of an azo dye C.I. Remazol Black 5 and toxicological assessment of its oxidation products

Ozonation of an azo dye C.I. Remazol Black 5 and toxicological assessment of its oxidation products

Rainwater toxicity and contamination study from São Paulo Metropolitan Region, Brazil

Exploration of Environmental Friendly Adsorbents for Treatment of Azo Dyes From Textile Wastewater and Its Dosage Optimization

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