The performance of activated sludge plants compared with the results of various bacterial toxicity tests—A study with 3,5-dichlorphenol

Broecker, B.; Ζahn, Rudolf K.

doi:10.1016/0043-1354(77)90122-1

Cited by 34 publications

(7 citation statements)

References 2 publications

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“…pyriformis cells t o CuZi, Cd", Zn2+ and Pb2+ (Slabbert and Morgan, 1982). Similar findings were reported by Broecker and Zahn (1977) when testing the effect of 3,5-dichlorophenol on bacterial oxygen uptake and uptake rate, and by Schultz et al (1978) when studying the cytotoxicity of synthetic fuel products on T. pyriformis. According to Pawlaczyk-Szpilowa et al (1972) a n increase in respiration caused by low concentrations of toxic substances reflects a state of hypersensitivity which, after exceeding a certain concentration, could be lethal.…”

Section: Growth Testssupporting

confidence: 83%

A rapid water toxicity screening test based on oxygen uptake of pseudomonas putida

Slabbert¹,

Grabow²

1986

Environ. Toxicol. Water Qual.

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SynopsisOxygen uptake of Pseudomonas putida was employed for the rapid screening of toxicants in water. Oxygen uptake was measured over a 10 minute period at constant temperature by means of a biological oxygen monitoring system connected to a potentiometric recorder. Sublethal concentrations of selected chemicals inhibited or stimulated oxygen uptake. A P. putida growth inhibition test proved more sensitive to most individual chemicals than the oxygen uptake assay, but yields results only after some 7 hours. Industrial emuent in low concentrations and domestic wastewater, stimulated both oxygen uptake and growth of P. putida.Higher concentrations of industrial effluent and a laboratory mixture of selected toxicants inhibited both growth and oxygen uptake at equal levels of sensitivity. Sensitivity compared favourably with that of other rapid bioassays, and various toxicants were detected at concentrations well below those allowed in industrial emuents. Since the P . putida oxygen uptake assay is relatively sensitive, simple, economical and exceptionally fast, it should prove useful for the rapid testing of many wastewaters and even excessive contamination of drinking-water supplies while it may serve a valuable purpose as part of a battery of bioassays containing slower tests.

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Section: Growth Testssupporting

confidence: 83%

A rapid water toxicity screening test based on oxygen uptake of pseudomonas putida

Slabbert¹,

Grabow²

1986

Environ. Toxicol. Water Qual.

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“…Respiratory activity assays can detect adverse effects on heterotrophic microorganisms, i.e., those organisms responsible for metabolizing carbonaceous materials obtained from sources such as activated sludge, soil, and sediment (Broecker and Zahn, 1977;Dutka and Kwan, 1984;Ryssov-Nielsen, 1975). The most widely used method for characterizing activated sludge is measurement of its respiratory activity.…”

Section: Introductionmentioning

confidence: 99%

Comparison of three rapid toxicity test procedures: Microtox,® polytox,® and activated sludge respiration inhibition

Elnabarawy¹,

Robideau²,

Beach³

1988

Environ. Toxicol. Water Qual.

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Methods for measuring respiratory activity can detect adverse effects on heterotrophic microorganisms. These methods are useful tools for assessing the impact of chemicals on biological wastewater treatment processes. They are also well suited for evaluating the treatability potential of individual wastes. However, varying results are oRen reported when using municipal or industrial activated sludge substrate in toxicity assessments. The lack of reproducibility of these tests has also greatly limited efforts to measure the effectiveness of treatment plants in removing toxic contaminants. The toxicity of wastewaters and chemicals to biological treatment systems can be determined in 30 min with the new Polytox@ toxicity procedure. The Polytox@ kit utilizes a specialized blend of bacterial cultures. The objective of this paper is to evaluate the relative sensitivity of the new PolytoxQ toxicity procedure with two accepted microbial assay procedures; namely, the MicrotoxQ bioluminescence assay and the Organization for Economic Cooperation and Development's Activated Sludge Respiration Inhibition test. This paper compares toxicity values for selected inorganic and organic chemicals as determined in the three microbial assay systems. The sensitivity and reliability of the new PolytoxQ toxicity procedure is discussed.

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“…The tests were performed (n=8) with the reference substances Zn 2+ and Cu 2+ , as shown in Table 4. 3,5-dichlorophenol is a widely recommended reference compound with A. scheri and activated sludge microorganisms (Broecker and Zahn 1977, Gendig et al 2003, Strotmann et al 2020). In their studies, Strotmann et al (2020) found that the chlorinated phenol compounds have high chemical stability and do not vary with incubation time, culture medium, storage method, and do not form complexes such as Cr 6+ and Zn 2+, which may in uence the bioavailability of the chemical compound.…”

Section: Toxicity Assaysmentioning

confidence: 99%

Comparison between Aliivibrio fischeri and activated sludge microorganisms in the evaluation of the toxic pollutants of leachates from Brazilian landfills

Costa

Valentim

Silva

et al. 2021

Environ Sci Pollut Res

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Ecotoxicological assessment of land ll leachate has become a priority to determine its impacts on the ecosystem. Toxicity assays with microorganisms stand out due to their quick response, low cost and ease of testing. In this context, the present study evaluated the acute toxic effects of leachates from two land lls of different ages and modes of operation to bacterium A. scheri and activated sludge microorganisms and the ammonia nitrogen and humic substances (HS) sensitivity to these organisms. Reductions greater than 30% in leachate toxicity were observed after ammonia removal for A. scheri and activated sludge microorganisms. After 97% removal of HS, the greater reductions in toxicity (44.28 to 79.82%) were veri ed for microbial species studied, indicating that the organic compounds (measured as chemical oxygen demand, total organic carbon and humic substances) were the primary pollutants responsible for the toxicity of the leachates. Concerning the organisms studied, A. scheri showed greater sensitivity to the leachates' pollutants compared to the activated sludge microorganisms. Nevertheless, a strong correlation was observed between A. scheri and activated sludge microorganisms' toxicity responses, suggesting that respirometry assay can be used to determine leachate toxicity.

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The performance of activated sludge plants compared with the results of various bacterial toxicity tests—A study with 3,5-dichlorphenol

Cited by 34 publications

References 2 publications

A rapid water toxicity screening test based on oxygen uptake of pseudomonas putida

A rapid water toxicity screening test based on oxygen uptake of pseudomonas putida

Comparison of three rapid toxicity test procedures: Microtox,® polytox,® and activated sludge respiration inhibition

Comparison between Aliivibrio fischeri and activated sludge microorganisms in the evaluation of the toxic pollutants of leachates from Brazilian landfills

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