Kinetics of the toxicity of metals to luminescent bacteria

Ren, Shijin; Frymier, Paul D.

doi:10.1016/s1093-0191(02)00022-9

Cited by 44 publications

(31 citation statements)

References 22 publications

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“…When pH, dissolved oxygen and the alkalinity vary, metal speciation reveal different in toxic effects due to different speciation including oxides, hydroxides or carbonates. Due to the fact that the quality of industrial wastewater is complex, metal speciation was ignored in previous studies [8][9][10].…”

Section: Methodsmentioning

confidence: 99%

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Novel modeling concept for evaluating the effects of cadmium and copper on heterotrophic growth and lysis rates in activated sludge process

Pai

Wang

et al. 2009

Journal of Hazardous Materials

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Section: Methodsmentioning

confidence: 99%

“…growth rate and lysis rate. Although the toxicity of heavy metals to ASP has been studied in numerous works, the main concerns are related to the effect of heavy metal on growth rate constant in most works [7][8][9][10][11][12]. Contrarily, no research has been done on the effect of heavy metals on lysis rate constant.…”

Section: Introductionmentioning

confidence: 99%

Novel modeling concept for evaluating the effects of cadmium and copper on heterotrophic growth and lysis rates in activated sludge process

Pai

Wang

et al. 2009

Journal of Hazardous Materials

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“…Heavy metals are noncompetitive inhibitors as concluded in most of the studies (Beg et al 1982;Lewandowski 1987;Mazierski 1995;Hu et al 2002;Ren and Frymier 2003). In the presence of noncompetitive inhibitors, the specific ammonium utilization rate in the continuous nitrification system can be predicted by Eq.…”

Section: Mechanism Of Heavy Metal Inhibitionmentioning

confidence: 96%

Effect of continuous Cd feeding on the performance of a nitrification reactor

Semerci

Çeçen

2008

Biodegradation

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The inhibitory effect of Cd on nitrification was investigated in a continuous-flow system with enriched nitrifying bacteria. The maximum specific ammonium utilization rate and the half-saturation constant were found as 671 mg NH(4)-N/g VSS day and 0.48 mg/l, respectively. In the case of continuous Cd input at 1 and 2.5 mg/l, nitrification was inhibited by 30% and 47%, respectively. Inhibition ranged from 20% to 40% and no further increase in inhibition was exhibited in new runs except at 10 mg/l influent Cd. At 10 mg/l influent Cd, specific ammonium utilization and nitrate production rates were inhibited by 90%. On the contrary, a serious nitrite accumulation was not observed during this period. When Cd feeding was stopped, recovery from inhibition was observed after 37 day which was seen by the improvement in ammonium utilization and nitrate production rates. A shift in microbial population from the initial Nitrosomonas sp. to the Cd-tolerant Nitrosospira sp. was observed in the recovery period from severe Cd inhibition. After the domination of Nitrosospira species, redosing at 10 mg/l and then at 15 mg/l did not affect the performance as before.

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“…Although many papers have reported the relationships between ecotoxicity and chemical analysis [13][14][15][16][17][18][19][20][21] , few mathematical Influence of the Organic Compounds on the Ecotoxicity Foundry Sludge and Olive Mill Waste 507 equations have been obtained 1,15,20 . Furthermore, in this work, the study of the ecotoxicity in relation to the organic pollutants in the process (S/S and AOP) has been reported.…”

Section: Introductionmentioning

confidence: 99%

Influence of the Organic Compounds on the Ecotoxicity in the Treatment of Foundry Sludge and Olive Mill Waste

et al. 2006

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The study of the ecotoxicity in two industrial waste materials and the relationships with the organic parameters has been conducted. Foundry sludge and olive mill waste have been used as industrial waste materials with organic or mixed character. Stabilisation/solidification (S/S) and advanced oxidation (AOP) processes have been carried out in order to treat both foundry sludge and olive mill waste. Analysis of ecotoxicity, total organic carbon, COD and phenol index have been evaluated in the untreated waste and end-products. The results of the treated samples allow obtaining the best formulations in both processes. The best formulations in the immobilisation process have been obtained with Portland cement and black carbon, activated carbon or foundry sand ashes. In the AOP process, ozone concentrations above 35 mg/l and reaction times equal to 120 minutes have been the optimal variables. The relationships between the organic parameters and the ecotoxicity of the samples have been studied in this paper. Furthermore, the global organic parameters have been studied in relation to the phenolic compounds. Lineal and logarithmic expressions have been obtained between the total organic carbon and phenol index and the ecotoxicity of the samples related to the organic parameters, respectively. Ecotoxicity of the samples with Vibrio fischeri is recommended as a very promising biotest for the study of the characterisation and the evaluation of the treatment of organic and mixed character waste and total organic carbon is recommended as global organic parameter in the treatment of foundry sludge.

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Kinetics of the toxicity of metals to luminescent bacteria

Cited by 44 publications

References 22 publications

Novel modeling concept for evaluating the effects of cadmium and copper on heterotrophic growth and lysis rates in activated sludge process

Novel modeling concept for evaluating the effects of cadmium and copper on heterotrophic growth and lysis rates in activated sludge process

Effect of continuous Cd feeding on the performance of a nitrification reactor

Influence of the Organic Compounds on the Ecotoxicity in the Treatment of Foundry Sludge and Olive Mill Waste

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