Effect of cadmium on composition and diversity of bacterial communities in activated sludges

Tsai, Yung‐Pin; You, Sheng‐Jie; Pai, Tzu‐Yi; Chen, Ko-Wei

doi:10.1016/j.ibiod.2005.03.005

Cited by 57 publications

(27 citation statements)

References 13 publications

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“…These bacteria were more abundant in the BNR system, meanwhile inhibited by the high pH in the SSR and they gradually disappeared over the operation time. Band 21 was most closely matched with Rubrivivax gelatinosus, which is a phosphorus accumulating bacteria and a hydrogen producing photosynthetic bacteria (Tsaia et al, 2005). Band 21 was only predominant in lanes 3, 6 and 12, which indicated that the bacteria corresponding to band 21 had gradually concentrated in the SIPER system, and became the dominant bacteria by the end of system operation.…”

Section: Phylogenetic Analysismentioning

confidence: 89%

Investigation of microbial community structure in an advanced activated sludge side-stream reactor process with alkaline treatment

Yan

Wang²,

Chen

et al. 2015

International Biodeterioration & Biodegradation

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Section: Phylogenetic Analysismentioning

confidence: 89%

Investigation of microbial community structure in an advanced activated sludge side-stream reactor process with alkaline treatment

Yan

Wang²,

Chen

et al. 2015

International Biodeterioration & Biodegradation

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“…In AMD ecosystems, the microbial communities respond to these environmental variations because microbes vary widely in their ability to cope with extreme environmental conditions [17,18]. Understanding how the microbial community composition and structure change along such gradients is a vital challenge for researchers to describe and predict the biogeochemical cycles in AMD systems [19].…”

Section: Introductionmentioning

confidence: 99%

Microbial Diversity and Community Assembly across Environmental Gradients in Acid Mine Drainage

et al. 2017

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Abstract:Microorganisms play an important role in weathering sulfide minerals worldwide and thrive in metal-rich and extremely acidic environments in acid mine drainage (AMD). Advanced molecular methods provide in-depth information on the microbial diversity and community dynamics in the AMD-generating environment. Although the diversity is relatively low and in general inversely correlated with the acidity, a considerable number of microbial species have been detected and described in AMD ecosystems. The acidophilic microbial communities dominated by iron/sulfur-oxidizing microbes vary widely in their composition and structure across diverse environmental gradients. Environmental conditions affect the microbial community assembly via direct and indirect interactions with microbes, resulting in an environmentally dependent biogeographic pattern. This article summarizes the latest studies to provide a better understanding of the microbial biodiversity and community assembly in AMD environments.

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“…In another study, Nitrosospira were found to be the predominant microorganism in habitats exposed to high toxic metal concentrations in soil media (Stephen et al 1999). In the study of Tsai et al (2005), Nitrosomonas communis was the predominant microorganism in the class of Betaproteobacteria before Cd addition. However, nitrifiers disappeared as a result of Cd inhibition.…”

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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Effect of cadmium on composition and diversity of bacterial communities in activated sludges

Cited by 57 publications

References 13 publications

Investigation of microbial community structure in an advanced activated sludge side-stream reactor process with alkaline treatment

Investigation of microbial community structure in an advanced activated sludge side-stream reactor process with alkaline treatment

Microbial Diversity and Community Assembly across Environmental Gradients in Acid Mine Drainage

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

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