Enhancement of anammox activity by addition of compatible solutes at high salinity conditions

Mu, Liu; Peng, Yongzhen; Liu, Tiantian; Han, Xiaoyan

doi:10.1016/j.biortech.2014.06.015

Cited by 58 publications

(21 citation statements)

References 16 publications

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“…Salinity exerts toxic effects on microorganisms during biodegradation processes. One common mitigating strategy is to acclimatize the microbial culture by progressively increasing salt concentrations . However, acclimatization time may be quite long and microbial salt resistance can be easily lost if the salt concentration selection pressure is removed .…”

Section: Introductionmentioning

confidence: 99%

“…An alternative approach to deal with saline wastewater is the addition of compatible solutes to enhance sludge activity. A previous study has shown the enhancement effect of compatible solutes under salinity stress and found that compatible solutes addition was a feasible solution to counteract saline conditions . Many microorganisms accumulate organic solutes (called ‘compatible solutes’) to balance osmotic pressure between the cytoplasm and the outer surroundings.…”

Section: Introductionmentioning

confidence: 99%

“…One common mitigating strategy is to acclimatize the microbial culture by progressively increasing salt concentrations. 14 However, acclimatization time may be quite long and microbial salt resistance can be easily lost if the salt concentration selection pressure is removed. 15 Although microorganisms are able to survive in high salinity environments through bio-augmentation with halophilic species to achieve more stable and durable process performance, it is not easy to maintain dominance of such species in mixed culture systems.…”

Section: Introductionmentioning

confidence: 99%

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Enhanced carbon and nitrogen removal performance of simultaneous anammox and denitrification (SAD) with mannitol addition treating saline wastewater

Yang

Zhu

et al. 2018

J of Chemical Tech & Biotech

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BACKGROUND Simultaneous anammox and denitrification (SAD) can remove carbon and nitrogen. However, its performance is suppressed under saline surroundings. In this work, mannitol was used to enhance a SAD process treating saline wastewater. RESULTS The optimum carbon and nitrogen removal was achieved at 0.2 mmol L−1 mannitol, during which ammonium removal efficiency (ARE), nitrite removal efficiency (NRE) and chemical oxygen demand (COD) removal efficiency were 96.95%, 93.70% and 90.05%, respectively. The maximum ammonium removal rate (ARR), nitrite removal rate (NRR) and the specific anammox activity (SAA) were increased by 25.49%, 55.84% and 33.83% with optimum addition (0.2 mmol L−1 mannitol) respectively. The diameter of sludge was enlarged with the addition of mannitol (≤0.2 mmol L−1). The Tseng‐Wayman model was more suitable to simulate the whole SAD process. The modified logistic model, the modified Boltzman model and the modified Gompertz model were all appropriate to describe nitrogen removal in a typical cycle with the addition of mannitol. CONCLUSION Mannitol was effective in enhancing a SAD process treating saline wastewater, and maximum nitrogen removal was achieved at mannitol = 0.2 mmol L−1. The Tseng‐Wayman model satisfactorily predicted the whole SAD process treating saline wastewater with mannitol addition. © 2018 Society of Chemical Industry

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Enhanced carbon and nitrogen removal performance of simultaneous anammox and denitrification (SAD) with mannitol addition treating saline wastewater

Yang

Zhu

et al. 2018

J of Chemical Tech & Biotech

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“…As an autotrophic oxidation process, this process converts ammonium (NH 4 + ) to dinitrogen gas (N 2 ) using nitrite (NO 2 À ) as the electron acceptor, thus without requirement for aeration and addition of exogenous carbon sources compared to the conventional nitrification-denitrification process. Nowadays, the anammox process has been used to treat various wastewaters such as municipal wastewater (Leal et al, 2016), landfill leachate (Li et al, 2014;Wang et al, 2016), turtle breeding wastewater (Chen et al, 2013), swine wastewater (Waki et al, 2010), and high-salinity wastewater (Liu et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Performance and microbial community of simultaneous anammox and denitrification (SAD) process in a sequencing batch reactor

Qiang

et al. 2016

Bioresource Technology

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h i g h l i g h t sSimultaneous nitrogen and carbon removal was achieved in the SAD process. Contributions of anammox and denitrification to nitrogen removal were determined. Anammox and denitrifying bacteria dominated at low and high CODs, respectively. Brocadia sinica could grow with organic matter and tolerate high NO 3 À concentrations.a r t i c l e i n f o exhibited good diversity and abundance, but the diversity of anammox bacteria was less abundant. Brocadia sinica was able to grow in the presence of organic matter and tolerate high nitrite concentration. Anammox bacteria were predominant at low COD contents, while denitrifying bacteria dominated the microbial community at high COD contents. Anammox and denitrifying bacteria could coexist in one reactor to achieve the simultaneous carbon and nitrogen removal through the synergy of anammox and denitrification.

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“…With rapid economic growth, more and more saline wastewater containing high nitrogen content is produced from seafood processing, textile dyeing, chemical, pharmaceutical, and petroleum industries (Liu, Peng, Wang, Liu, & Xiao, ; Xing et al, ). Li, Qi, et al () reported that about 5% of industrial wastewater is saline or hypersaline.…”

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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Enhancement of anammox activity by addition of compatible solutes at high salinity conditions

Cited by 58 publications

References 16 publications

Enhanced carbon and nitrogen removal performance of simultaneous anammox and denitrification (SAD) with mannitol addition treating saline wastewater

Enhanced carbon and nitrogen removal performance of simultaneous anammox and denitrification (SAD) with mannitol addition treating saline wastewater

Performance and microbial community of simultaneous anammox and denitrification (SAD) process in a sequencing batch reactor

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

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