The use of Microtox® to assess toxicity removal of industrial effluents from the industrial district of Camaçari (BA, Brazil)

Araújo, Cristiano V.M.; Nascimento, Renato B.; Oliveira, Carolina Soares Viana de; Strotmann, Uwe J.; Silva, Eduardo Mendes da

doi:10.1016/j.chemosphere.2004.10.036

Cited by 47 publications

(40 citation statements)

References 21 publications

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“…The organic load reduction due to the treatment process ranged between 80-90% based on COD determination, with a mean reduction of 83.6%. The results of this study were similar to the observation by Araújo et al (2005) in this same WTP, who reported a mean COD reduction of 83.04%. The data showed a higher variation of EE-COD than of TE-COD load.…”

Section: Activity Respiration and Chemical Demand Oxygen (Cod) Reductionsupporting

confidence: 81%

“…The spiking factor importance arises from the fact that, it allows a clear respiration profile, thus reflecting the capacity of the sludge to response to eventual respiratory effects (Strotmann et al, 1999). Lower respiratory activities of the tanks and lower spiking factors in the TE tests can be due to reduction of the biodegradable compounds after treatment, which results in a reduced toxicity from the WTP (Araújo et al, 2005). No evidence of activated sludge inhibition was detected.…”

Section: Spiking Of Respiration Activitymentioning

confidence: 99%

“…The WTP of this study (12º46'06.7" and 38º06'59.4") has been described by Araújo et al (2005) and receives and processes effluents from the SID, consisting of 52 industries, working in different production sectors: chemical, petrochemical, metallurgy, cellulose and breweries, under tropical conditions. Short-term respiration assays were performed at 20 ± 2 ºC by a modification of the ISO 8192 method (ISO, 1986).…”

Section: Methodsmentioning

confidence: 99%

“…Although AT-4 presented higher organic load reduction, all tanks presented similar respiration activity. In a study with Microtox at this WTP during the same period, Araújo et al (2005) found a mean toxicity reduction of 92.71%. Several authors have shown that Microtox test is more sensitive to the action of toxicants than respirometry (Kilroy and Gray, 1992;Dalzell et al, 2002;Ricco et al, 2004).…”

Section: Activity Respiration and Chemical Demand Oxygen (Cod) Reductionmentioning

confidence: 99%

“…COD ( This could be due to the natural higher variation from the EE-COD, as mentioned by Araújo et al (2005). Biological processes, such as aerobic respiration are similar to all sorts of organisms.…”

Section: Activity Respiration and Chemical Demand Oxygen (Cod) Reductionmentioning

confidence: 99%

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Utilisation of respirometry to assess organic matter reduction of effluents from the Camaçari industrial complex (BA, Brazil)

Oliveira

Araújo

Nascimento

et al. 2007

Braz. arch. biol. technol.

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The treatment efficiency of industrial effluents, after biological treatment by activated sludge in aeration tanks (AT), was assessed through the utilisation of respirometry tests at the Cetrel's-wastewater treatment plant (WTP). Samples of the equalised effluent (EE), prior to treatment, and of the treated effluent (TE), after treatment, were analysed. Twenty bioassays batch were carried out to AT (AT-2, AT-3 and AT-4). Each test consisted of

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Section: Activity Respiration and Chemical Demand Oxygen (Cod) Reductionsupporting

confidence: 81%

Section: Spiking Of Respiration Activitymentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Activity Respiration and Chemical Demand Oxygen (Cod) Reductionmentioning

confidence: 99%

Section: Activity Respiration and Chemical Demand Oxygen (Cod) Reductionmentioning

confidence: 99%

See 3 more Smart Citations

Utilisation of respirometry to assess organic matter reduction of effluents from the Camaçari industrial complex (BA, Brazil)

Oliveira

Araújo

Nascimento

et al. 2007

Braz. arch. biol. technol.

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Recent advances in the development and applications of luminescent bacteria–based biosensors

Li,

Zhao,

et al. 2024

Luminescence

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Luminescent bacteria–based biosensors are widely used for fast and sensitive monitoring of food safety, water quality, and other environmental pollutions. Recent advancements in biomedical engineering technology have led to improved portability, integration, and intelligence of these biotoxicity assays. Moreover, genetic engineering has played a significant role in the development of recombinant luminescent bacterial biosensors, enhancing both detection accuracy and sensitivity. This review provides an overview of recent advances in the development and applications of novel luminescent bacteria–based biosensors, and future perspectives and challenges in the cutting‐edge research, market translation, and practical applications of luminescent bacterial biosensing are discussed.

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Oil spill bioremediation strategies in Brazilian tropical seawater—The role of polycyclic aromatic hydrocarbons degradation

de Souza,

Becker,

Vieira‐da‐Motta

et al. 2023

CLEAN Soil Air Water

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For this research, a 28‐day bioremediation experiment was conducted, simulating an oil spill on the Brazilian coast using mesocosm units and two different bioremediation strategies, adding rate‐limiting nutrients in the form of NPK fertilizer during the first four days (Bior1) and weekly (Bior2). The gas chromatography–mass spectrometry analysis results showed that oil natural degradation (Control) removed 33.8 wt.% of the alkanes on Day 7, while bioremediation processes plus evaporation in Bior1 and Bior2 contributed to minimizing alkanes in 83.4 and 80.8 wt.%, respectively. Bior1 strategy also accelerated the biodegradation of recalcitrant polycyclic aromatic hydrocarbons (PAH) such as phenanthrene, methyl phenanthrenes, and methyl dibenzothiophenes up to the second week when compared to Bior2. Low‐cost NPK fertilizer addition demonstrated efficiency in the bioremediation strategy, especially in the first days of the simulated oil spill (Bior1), leading to savings in time and financial investment in recovering an oil contaminated area. Results also showed the efficiency of the oil‐degrading bacteria Pseudomonas mesophilica, identified for the first time in Brazilian seawater. In addition, results confirmed the influence of tropical temperatures over oil natural natural degradation and bioremediation as an oil spill cleanup solution for recovering contaminated areas in tropical countries, especially in sensitive marine environments.

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The use of Microtox® to assess toxicity removal of industrial effluents from the industrial district of Camaçari (BA, Brazil)

Cited by 47 publications

References 21 publications

Utilisation of respirometry to assess organic matter reduction of effluents from the Camaçari industrial complex (BA, Brazil)

Utilisation of respirometry to assess organic matter reduction of effluents from the Camaçari industrial complex (BA, Brazil)

Recent advances in the development and applications of luminescent bacteria–based biosensors

Oil spill bioremediation strategies in Brazilian tropical seawater—The role of polycyclic aromatic hydrocarbons degradation

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