Alumina nanoparticles-induced effects on wastewater nitrogen and phosphorus removal after short-term and long-term exposure

Chen, Yinguang; Su, Yinglong; Zheng, Xiong; Hong, Changshou; Yang, Hong

doi:10.1016/j.watres.2012.05.042

Cited by 93 publications

(40 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In this sense, Gottenbos et al (2001) showed that the positively charged surfaces have an antimicrobial effect on Gram negative bacteria, like E-coli; this fact could damage the activity of 13X-supported bacteria. Similarly, it was demonstrated that the presence of alumina nanoparticles decreases the denitrification efficiency of activated sludge from 80 to 62% (Chen et al, 2012). The toxicity of some inorganic oxides TiO 2 , SiO 2 , ZnO, CuO in both nano and bulk formulations for different kinds of bacteria was also previously pointed out (Adams et al, 2006;Heinlaan et al, 2008).…”

Section: Resultsmentioning

confidence: 74%

“…Many different materials were previously used as bacteria supports, including metal oxides (Chen et al, 2012;Kurt et al, 1987), zeolites , biodegradable polymers (Chu and Wang, 2013), woods (Yamashita et al, 2011) or carbon materials (Moreno-Castilla et al, 2003). These studies are focused mainly to analyze the morphological characteristics of supports (Nuhoglu et al, 2002;Eldyasti et al, 2012), as previously commented.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Influence of the physicochemical properties of inorganic supports on the activity of immobilized bacteria for water denitrification

Bautista‐Toledo

Espinosa-Iglesias

Carrasco-Marín

et al. 2015

Journal of Environmental Management

View full text Add to dashboard Cite

Section: Resultsmentioning

confidence: 74%

Section: Introductionmentioning

confidence: 99%

Influence of the physicochemical properties of inorganic supports on the activity of immobilized bacteria for water denitrification

Bautista‐Toledo

Espinosa-Iglesias

Carrasco-Marín

et al. 2015

Journal of Environmental Management

View full text Add to dashboard Cite

“…[29] In this study the cell membrane integrity was measured by LDH release. As seen in Figure 2 the presence of PCP induced the similar LDH release to the control, suggesting that PCP did not cause the damage of P. denitrificans cell membrane integrity at these concentrations.…”

Section: Effects Of Pcp On Ldh Release and Ros Productionmentioning

confidence: 99%

Effects of pentachlorophenol on the bacterial denitrification process

Yang

Chen

2016

Chemical Speciation & Bioavailability

View full text Add to dashboard Cite

The use of pentachlorophenol (PCP) was banned or restricted in many countries worldwide because of its adverse influences on the ecological environment and humans. However, the potential disrupting effects of PCP on denitrifying microorganisms have warranted more analysis. In this study, the impacts of PCP on denitrification were investigated by using Paracoccus denitrificans as a model denitrifying bacterium. Compared with the control, the presences of 10 and 50 μM of PCP were found to significantly decrease the denitrification efficiencies from 98.5 to 87.2% and 68.7%, respectively. The mechanism studies showed that PCP induced the generation of reactive oxygen species, which decreased the vital enzymes activities related to glycolysis process, causing the disturbance of the metabolism of P. denitrificans utilizing carbon source (glucose) and the growth of the cell, and subsequently the generation of electron donor (NADH) for denitrification via NAD + reduction was severely depressed. Further studies indicated that PCP also decreased the genes expression of several key enzymes responsible for denitrification, such as napA of nitrate reductase (NAR), nirS of nitrite reductase, norB of nitric oxide reductase, and nosZ of nitrous oxide reductase; however, there was only the enzyme activity of NAR was remarkably inhibited.

show abstract

“…Usually, bacteria related to nitrogen removal are found to be more sensitive than polyphosphate accumulating organisms at the same nanoparticle concentration (Chen et al, 2012b;Zheng et al, 2011a). As a result, NPs often induce a stronger adverse impact on nitrogen removal than phosphorus removal.…”

Section: Impacts Of Nps On Wastewater Treatment and Sewage Sludge Digmentioning

confidence: 99%

Critical review of the influences of nanoparticles on biological wastewater treatment and sludge digestion

Wang

Chen

2015

Critical Reviews in Biotechnology

Self Cite

View full text Add to dashboard Cite

Nanoparticles (NPs), with at least one dimension less than 100 nm, are substantially employed in consumer and industrial products due to their specific physical and chemical properties. The wide uses of engineered NPs inevitably cause their release into the environment, especially wastewater treatment plants. Therefore, it is essential to systematically assess their potential impact on biological wastewater treatment and subsequent sewage sludge digestion. This review aims to provide such support. First, this paper reviews the recent advances on the analytical developments and nano-bio interface of NPs in wastewater and sewage sludge treatment. The effects of NPs on biological wastewater treatment and sewage sludge digestion and related mechanisms are discussed in detail. Finally, the key questions that need to be answered in the future are pointed out, which include on-line revelation of the changes of NPs in sewage and sludge environments, in situ assessment of the variations of microorganisms involved in these biological systems after they are exposed to NPs. Differentiation of the contribution of individual toxicity mechanisms to these systems, and the identification of under what conditions the nanoparticle-induced toxicity will be increased or decreased are also considered.

show abstract

Alumina nanoparticles-induced effects on wastewater nitrogen and phosphorus removal after short-term and long-term exposure

Cited by 93 publications

References 32 publications

Influence of the physicochemical properties of inorganic supports on the activity of immobilized bacteria for water denitrification

Influence of the physicochemical properties of inorganic supports on the activity of immobilized bacteria for water denitrification

Effects of pentachlorophenol on the bacterial denitrification process

Critical review of the influences of nanoparticles on biological wastewater treatment and sludge digestion

Contact Info

Product

Resources

About