Copper(II) ion toxicity in activated sludge processes as function of operating parameters

Pamukoğlu, M. Yunus; Kargı, Fikret

doi:10.1016/j.enzmictec.2006.09.005

Cited by 35 publications

(24 citation statements)

References 35 publications

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“…Other factors such as initial metal concentrations, activated sludge dosage, temperature, contact time (treatment duration), presence of other ions and organic materials in the bulk solutions (which may be in competition) could affect the efficiency of activated sludge for heavy metal removal. (Sheng-lian et al 2006;Comte et al 2007;Pamukoglu and Kargi 2007). Bieszkiewicz and Hoszowski (1978) reported that activated sludge could tolerate up to 0.8, 1.15 and 20 mg/l only of Cu, Cr III and Cr(VI), respectively after which the activated sludge experienced inferior purification and reduced intensity of respiration of its microorganisms.…”

Section: Heavy Metal Removalsmentioning

confidence: 99%

Bioremediation of heavy metal-contaminated effluent using optimized activated sludge bacteria

et al. 2012

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Removal of heavy metals from contaminated domestic-industrial effluent using eight resistant indigenous bacteria isolated from acclimatized activated sludge was investigated. Molecular identification using 16S rDNA amplification revealed that all strains were Gram-negative among which two were resistant to each of copper, cadmium and cobalt while one was resistant to each of chromium and the heavy metal mixture. They were identified as Enterobacter sp. 320 mg Cd/l, 140 mg Co/l and 29 mg Cr/l respectively. The four resistant strains were used as a mixture to remove heavy metals (elevated concentrations) and reduce the organic load of wastewater effluent. Results revealed that using the proposed activated sludge with the resistant bacterial mixture was more efficient for heavy metal removal compared to the activated sludge alone. It is therefore recommended that the proposed activated sludge system augmented with the acclimatized strains is the best choice to ensure high treatment efficiency and performance under metal stresses especially when industrial effluents are involved.

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Section: Heavy Metal Removalsmentioning

confidence: 99%

Bioremediation of heavy metal-contaminated effluent using optimized activated sludge bacteria

et al. 2012

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“…Monitoring of contaminants in the water is a In recent years, many methods based on biosensors and bioassays device have been developed for detecting and quantifying of toxic ion on activated sludge systems (Pamukoglu and Kargi, 2006). Some of these methods are according to inhibition of enzymatic activity (Strotmann et al, 1992); respiratory activities of the bacteria (Hu et al, 2004); kinetics of bacterial activities (Cabrero et al, 1998).…”

Section: Recent Developments In Biosensor Techniquesmentioning

confidence: 99%

“…Organic and inorganic toxic compounds, such as copper, lead, mercury, formaldehyde, and phenol, present in many industry wastewaters like leather tanning, automobile, petroleum, and textiles dying are known to cause serious pollution problems to the receiving aquatic environment (Pamukoglu and Kargi, 2006). Monitoring of contaminants in the water is a In recent years, many methods based on biosensors and bioassays device have been developed for detecting and quantifying of toxic ion on activated sludge systems (Pamukoglu and Kargi, 2006).…”

Section: Recent Developments In Biosensor Techniquesmentioning

confidence: 99%

“…During the past several decades, many methods based on biosensors or bioassays have been used for detecting and quantifying toxicity or inhibition in activated sludge systems or other biological systems (Pamukoglu and Kargi, 2006). Farre (2003) has reviewed different bioassays and recently developed biosensors on acute toxicity measurements.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of an Anaerobic Granule Biosensor for Upset Early Warning Detection

Jiang

2008

proc water environ fed

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“…The efficiency of degradation processes in an aerobic reactor is highly influenced by temperature (Vogelaar et al, 2002), dissolved oxygen (Wilén and Balmér, 1999), organic matter, nutrients and micronutrients (Pamukoglu and Kargi, 2007). These factors must also be considered for an adequate operation of wastewater treatment plants.…”

Section: Introductionmentioning

confidence: 99%

Activated sludge inhibition capacity index

Surerus

Giordano

Teixeira

2014

Braz. J. Chem. Eng.

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-Toxic compounds in sewage or industrial wastewater may inhibit the biological activity of activated sludge impairing the treatment process. This paper evaluates the Inhibition Capacity Index (ICI) for the assessment of activated sludge in the presence of toxicants. In this study, activated sludge was obtained from industrial treatment plants and was also synthetically produced. Continuous respirometric measurements were carried out in a reactor, and the oxygen uptake rate profile obtained was used to evaluate the impact of inhibiting toxicants, such as dissolved copper, phenol, sodium alkylbenzene sulfonate and amoxicillin, on activated sludge. The results indicate that ICI is an efficient tool to quantify the intoxication capacity. The activated sludge from the pharmaceutical industry showed higher resistance than the sludge from other sources, since toxicants are widely discharged in the biological treatment system. The ICI range was from 58 to 81% when compared to the synthetic effluent with no toxic substances.

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Copper(II) ion toxicity in activated sludge processes as function of operating parameters

Cited by 35 publications

References 35 publications

Bioremediation of heavy metal-contaminated effluent using optimized activated sludge bacteria

Bioremediation of heavy metal-contaminated effluent using optimized activated sludge bacteria

Evaluation of an Anaerobic Granule Biosensor for Upset Early Warning Detection

Activated sludge inhibition capacity index

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