Transient disturbance of engineered ZnO nanoparticles enhances the resistance and resilience of anammox process in wastewater treatment

Zhang, Zheng-Zhe; Cheng, Ya-Fei; Xu, Lian-Zeng-Ji; Bai, Yu-Hui; Xu, Jiajia; Shi, Zhi-Jian; Zhang, Qianqian; Jin, Ren‐Cun

doi:10.1016/j.scitotenv.2017.12.016

Cited by 67 publications

(15 citation statements)

References 31 publications

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“…Performance deterioration is often measured by respirometry methods (specific oxygen uptake rate) and nitrogen depletion assays (ammonia-utilization rate and/or nitrite/nitrate production rate) (Phan et al, 2020a(Phan et al, , 2020b. Cellular damages are either assessed biochemically (LDH release, ROS production) (Arnaout & Gunsch, 2012;Gu et al, 2014;Wu et al, 2018;Z. Z. Zhang, Cheng, Xu, Bai, Xu, Shi, Zhang, et al, 2018;Z.…”

Section: Methods and Assays For Enp Toxicity Assessmentmentioning

confidence: 99%

“…Z. Zhang, Cheng, Xu, Bai, Xu, Shi, Zhang, et al, 2018). ZnO NPs (~30 nm) were added to the bioreactor at 1.0 mg/L on Day 31, increased to 5.0 mg/L on Day 46 and 10 mg/L on Day 61.…”

Section: Effects Of Enps On Nitrification During Anaerobic Ammonium Oxidationmentioning

confidence: 99%

“…Z. Zhang, Cheng, Xu, Bai, Xu, Shi, Zhang, et al, 2018 accompanied by the disappearance of some species with anammox ability. This observation seems to contradict the findings by Zhang and colleagues in which they reported no long-term adverse effects of AgNPs on anammox activity at concentrations of 1, 10, and 50 mg/L.…”

Section: Effects Of Enps On Nitrification During Anaerobic Ammonium Oxidationmentioning

confidence: 99%

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The effects of engineered nanoparticles on nitrification during biological wastewater treatment

Xing

Harper

2021

Biotech & Bioengineering

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Technological advancements in the past few decades have made it possible to manufacture nanomaterials at a large scale, and engineered nanoparticles (ENPs) are increasingly found in consumer products, such as cosmetics, sports products, and LED displays. A large amount of these ENPs end up in wastewater and potentially impact the performance of wastewater treatment plants (WWTPs). One important function of the WWTP is nitrification, which is carried out by the actions of two groups of bacteria, ammonia-oxidizing bacteria (AOB), and nitrite-oxidizing bacteria (NOB). Since most ENPs are found to have or are designed to have antimicrobial activities, it is a legitimate concern that ENPs entering WWTPs may have negative impacts on nitrification. In this paper, the effects of ENPs on nitrification are discussed, focusing mainly on autotrophic nitrification by AOBs and NOBs. This review also covers ENP effects on anaerobic ammonium oxidation (anammox).Generally, nitrifiers in pure and mixed cultures can be inhibited by a variety of ENPs, but stress response mechanisms may attenuate toxicity. Long-term studies demonstrated that a wide range of NPs could cause severe deterioration of AOBs and/ or NOBs when the influent concentration exceeded an inhibition threshold. Proposed mechanisms include the generation of reactive oxygen species, dissolved metals, physical disruption of cell membranes, bacterial engulfment, and intracellular accumulation of ENPs. Future research needs are also discussed.

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Section: Methods and Assays For Enp Toxicity Assessmentmentioning

confidence: 99%

“…Z. Zhang, Cheng, Xu, Bai, Xu, Shi, Zhang, et al, 2018). ZnO NPs (~30 nm) were added to the bioreactor at 1.0 mg/L on Day 31, increased to 5.0 mg/L on Day 46 and 10 mg/L on Day 61.…”

Section: Effects Of Enps On Nitrification During Anaerobic Ammonium Oxidationmentioning

confidence: 99%

Section: Effects Of Enps On Nitrification During Anaerobic Ammonium Oxidationmentioning

confidence: 99%

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The effects of engineered nanoparticles on nitrification during biological wastewater treatment

Xing

Harper

2021

Biotech & Bioengineering

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“…Nevertheless, as the treated water is often depleted in dissolved oxygen and organic carbon, the successful operation of CNDP necessitates intensive aeration and the supplement of extra organic carbon. Anaerobic ammonium oxidation (ANAMMOX) is an alternative biological nitrogen removal technology [9], in which ammonium reacts with nitrite or nitrate to form nitrogen gas under anaerobic conditions [10]. By virtue of chemoautotrophic anammox bacteria, the ANAMMOX process does not require organic carbon addition and yields less sludge than CNDP [11].…”

Section: Introductionmentioning

confidence: 99%

Responses of Anammox Granular Sludge to Long-Term Rare Earth Element Feeding: Lanthanum as a Case

Huang

2020

Sustainability

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A tremendous input of ammonium and rare earth elements (REEs) has entered the surroundings on account of the discharge and leak of leaching agents during rare earth in-suit leaching mining, which has threatened various organisms. Anammox has the potential to release nitrogen contamination, but the potential impacts of REEs on anammox bacteria remain unclear. In this study, La (III) was chosen as a case to explore the long-term impacts on anammox granular sludge. The 5 mg L−1 La (III) which was examined hardly affected the anammox granulates because of the defense of extracellular polymeric substances. The high La concentrations (10–50 mg L−1) caused intercellular accumulation and the significant inhibition of nitrogen removal performance and dehydrogenase activity, especially a decrease in the relative abundance of Ca. Kuenenia. Moreover, it also induced patently oxidative damage and affected cell membrane integrity. Notably, extracellular polymeric substances have a limited defense capability; neither La3+ nor Ca2+/Mg2+ efflux-related genes aggravated the intracellular accumulation of La.

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“…This cost‐effective and environment‐friendly nitrogen removal process is widely applied in municipal and industrial wastewater treatment (Li, Carvajal‐Arroyo, Sierra‐Alvarez, & Field, ; Qi, Li, Dong, Wang, & Bo, ). According to the latest survey, there have been more than 100 full‐scale anammox‐based installations worldwide by early 2015 (Zhang, Cheng, et al, ).

\begin{matrix} {NH}_{4}^{+} + 1.32 {NO}_{2}^{-} + 0.066 {HCO}_{3}^{-} + 0.13 H^{+} \\ \to 1.02 N_{2} + 0.26 {NO}_{3}^{-} + 2.03 H_{2} O + 0.066 {CH}_{2} O_{0.5} N_{0.15} \end{matrix}

…”

Section: Introductionmentioning

confidence: 99%

Long‐term nitrogen removal performance and kinetics of anaerobic ammonia oxidation bacteria treating nitrogen‐rich saline wastewater with trehalose addition

Bai

et al. 2019

Water Environment Research

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A sequencing batch reactor was used to study long-term nitrogen removal performance of anaerobic ammonia oxidation bacteria (AnAOB) with trehalose addition treating nitrogen-rich saline wastewater. The operating temperature was controlled at 35 ± 0.5°C with influent pH of 7.5 ± 0.1. Trehalose played a significant role in enhancing long-term nitrogen removal performance. When trehalose was 0.1, 0.2, and 0.3 mM, ammonia removal efficiency (ARE) increased by 4.9%, 16.2%, and 32.4%, and nitrite removal efficiency (NRE) improved by 7.5%, 27.9%, and 42.2%, respectively. Optimal ARE and NRE were 92.4% and 97.4% achieved at 0.35 mM trehalose. Moreover, NO − 2 − N was removed completely within 2 hr at high trehalose content due to the synergistic effect resulting from AnAOB and heterotrophic denitrifying bacteria.The remodified Logistic model and modified Gompertz model were suitable for describing nitrogen removal in an operating cycle with trehalose addition. Fitted ARE max values were consistent with experimental values. Appropriate trehalose addition could shorten the response time of AnAOB coping with hazardous environment stress. Lag time was within 1 hr and the minimal fitted λ value got close to 0 achieved at 0.15 mM trehalose. • Practitioner points• Trehalose enhanced nitrogen removal of AnAOB in saline wastewater treatment.• Optimal ARE and NRE were 92.4% and 97.4% achieved at 0.35 mM trehalose. • Remodified Logistic and Gompertz models can analyze nitrogen removal with trehalose. • Appropriate trehalose can shorten response time of AnAOB coping with salt stress.

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Transient disturbance of engineered ZnO nanoparticles enhances the resistance and resilience of anammox process in wastewater treatment

Cited by 67 publications

References 31 publications

The effects of engineered nanoparticles on nitrification during biological wastewater treatment

The effects of engineered nanoparticles on nitrification during biological wastewater treatment

Responses of Anammox Granular Sludge to Long-Term Rare Earth Element Feeding: Lanthanum as a Case

Long‐term nitrogen removal performance and kinetics of anaerobic ammonia oxidation bacteria treating nitrogen‐rich saline wastewater with trehalose addition

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