Comparative evaluation of short-term stress of Cd(II), Hg(II), Pb(II), As(III) and Cr(VI) on anammox granules by batch test

Cheng, Yu; Song, Yunfeng; Chai, Liyuan; Duan, Cheng-Shan; Tang, Chong–Jian; Ali, Mohammad

doi:10.1016/j.jbiosc.2016.06.008

Cited by 53 publications

(19 citation statements)

References 38 publications

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“…Other toxic metals such as Hg, Mo, Cr, Ag, Co, and As have been investigated in several studies operating at batch or continuous feeding modes. The IC 50 of Hg(II) for anammox sludge dominated by the KSU-1 strain was 60.35 mg/L [128], which is significantly different from that for anammox sludge dominated by "Candidatus Brocadia" (2.33 mg/L) [129] with the same reactor volume and operation mode. Mo was found to be moderately inhibitory to anammox activity at a level of 22.7 mg/L in a batch test [124], whereas in another study with continuous feeding, 0.2 mg/L of Mo could decrease anammox activity by more than 10% [123].…”

Section: Other Toxic Metalsmentioning

confidence: 70%

“…Mo was found to be moderately inhibitory to anammox activity at a level of 22.7 mg/L in a batch test [124], whereas in another study with continuous feeding, 0.2 mg/L of Mo could decrease anammox activity by more than 10% [123]. The IC 50 values of Cr(VI) were 9.84 mg/L for a batch test using 120 mL serum bottles [129] and 26.9 mg/L for a batch test using 25 mL vials [119]. As a well-known antibacterial agent, Ag(I) could decrease anammox activity by up to 50% at an exposure level of 11.52 mg/L [128].…”

Section: Other Toxic Metalsmentioning

confidence: 87%

“…Currently, the inhibitory effect of Cd(II) on anammox bacteria has only been investigated at a batch scale. In a batch test using 120-mL serum bottles, the performance of anammox sludge dominated by "Candidatus Brocadia" was found to be decreased by 50% at a Cd(II) concentration of 7 mg/L [129]. Similarly, the IC 50 values of Cd(II) for anammox bacteria in other batch tests were 11.16 mg/L [128] and 11.2 mg/L [124].…”

Section: Cadmiummentioning

confidence: 89%

“…The IC 50 of Pb(II) was determined differently in studies using different anammox sludges. The Pb(II) concentration of 10.4 mg/L decreased the activity of anammox sludge dominated by "Candidatus Brocadia" up to 50% [129], whereas this level of reduction in inhibition was found at Pb(II) concentration of 45.6 mg/L in a 25 mL vial test using granular sludge dominated by "Candidatus Brocadia fulgida" [119]. However, the activity of anammox sludge dominated by the KSU-1 strain decreased by only 7.19% upon exposure to Pb(II) concentration of 40 mg/L [128].…”

Section: Leadmentioning

confidence: 99%

“…A Co(II) concentration of 5 mg/L could decrease anammox activity by more than 10% in the continuous feeding mode of a 500 mL reactor. As(III), which is more toxic than As(V), was investigated for its inhibitory effect on anammox sludge dominated by "Candidatus Brocadia" [129]. The activity of anammox bacteria was decreased by 29.67% upon exposure to an As(III) concentration of 60 mg/L [129].…”

Section: Other Toxic Metalsmentioning

confidence: 99%

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Performance of Anammox Processes for Wastewater Treatment: A Critical Review on Effects of Operational Conditions and Environmental Stresses

Cho

Kambey

Nguyễn

2019

Water

123

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The anaerobic ammonium oxidation (anammox) process is well-known as a low-energy consuming and eco-friendly technology for treating nitrogen-rich wastewater. Although the anammox reaction was widely investigated in terms of its application in many wastewater treatment processes, practical anammox application at the pilot and industrial scales is limited because nitrogen removal efficiency and anammox activity are dependent on many operational factors such as temperature, pH, dissolved oxygen concentration, nitrogen loading, and organic matter content. In practical application, anammox bacteria are possibly vulnerable to non-essential compounds such as sulfides, toxic metal elements, alcohols, phenols, and antibiotics that are potential inhibitors owing to the complexity of the wastewater stream. This review systematically summarizes up-to-date studies on the effect of various operational factors on nitrogen removal performance along with reactor type, mode of operation (batch or continuous), and cultured anammox bacterial species. The effect of potential anammox inhibition factors such as high nitrite concentration, high salinity, sulfides, toxic metal elements, and toxic organic compounds is listed with a thorough interpretation of the synergistic and antagonistic toxicity of these inhibitors. Finally, the strategy for optimization of anammox processes for wastewater treatment is suggested, and the importance of future studies on anammox applications is indicated.

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Section: Other Toxic Metalsmentioning

confidence: 70%

Section: Other Toxic Metalsmentioning

confidence: 87%

Section: Cadmiummentioning

confidence: 89%

Section: Leadmentioning

confidence: 99%

Section: Other Toxic Metalsmentioning

confidence: 99%

See 3 more Smart Citations

Performance of Anammox Processes for Wastewater Treatment: A Critical Review on Effects of Operational Conditions and Environmental Stresses

Cho

Kambey

Nguyễn

2019

Water

123

View full text Add to dashboard Cite

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Feasibility of CANON process for treating nitrogenous wastewater containing heavy metals

Zhao

Zhang

Li³

et al. 2020

J of Chemical Tech & Biotech

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The appearance of heavy metals in wastewater brings a major burden to wastewater treatment plants, due to the high toxicity to microorganisms. Several commonly used heavy metals, including Zn(II), Cd(II), Hg(II), and Pb(II) were adopted to clear the individual and joint toxicity to the completely autotrophic nitrogen removal over nitrite (CANON) process in six sequencing batch reactors. The obtained results suggested that the nitrogen removal performances were transiently inhibited, but rapidly recovered. The restoration period under the stress of Hg(II) and Pb(II) was shorter than that under Zn(II), Cd(II), and the joint heavy metals. During the long-term exposure, Cd(II) in 1mg L −1 slightly inhibited the nitrogen removal, while Zn(II), Hg(II), Pb(II), and mixture showed a negligible impact on CANON process. The defense of extracellular polymeric substances (EPS), the good adaptability of functional bacteria, and the inducement of resistant genera by heavy metals all contributed to the robustness and stability of CANON process. Therefore, it is feasible to treat nitrogenous wastewater containing low heavy metals using CANON process.

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Effect of rare earth element Y(III) on short‐term denitrification performance of anaerobic ammonia oxidized granular sludge

Wan

Xiao

et al. 2022

J of Chemical Tech & Biotech

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BACKGROUND The ammonia‐nitrogen wastewater generated during rare‐earth mining poses a serious hazard to the environment around the mine. This type of wastewater is difficult to treat using conventional biological methods due to its low carbon‐to‐nitrogen ratio. Anaerobic ammonia oxidation (anammox) has become the first choice for treating rare earth mine wastewater. However, the effect of rare earth elements (REEs) in wastewater on anammox bacteria has been insufficiently studied, and this limits the application of this process. Yttrium is a rare earth element present in wastewater, and the study of its effect on anammox can help in the application of this process in rare earth mine wastewater. RESULTS The effect of Y(III) on anammox granular sludge was studied using batch experiments. Anammox activity decreased with increasing Y(III) concentration, from 64.78 ± 0.28 to 17.15 ± 2.70 mg g−1 VSS day−1. The semi‐inhibitory concentration (IC50) of Y(III) for anammox activity was 30.36 mg L−1. Y (III) exhibited low promotion and high inhibition of anammox bacterial extracellular polymer secretion (EPS). Comparing the kinetic models, the Loung model is better suited for describing the kinetic equation of substrate concentration on anammox. CONCLUSION The acute toxicity of Y(III) to anaerobic sludge is influenced by the substrate and Y (III) concentrations. EPS‐based defence strategies play an important role in counteracting the toxicity of Y(III). The Edwards model fits the experimental data well and is suitable for predicting the inhibition of anammox activity by the substrate concentration. © 2022 Society of Chemical Industry (SCI).

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Comparative evaluation of short-term stress of Cd(II), Hg(II), Pb(II), As(III) and Cr(VI) on anammox granules by batch test

Cited by 53 publications

References 38 publications

Performance of Anammox Processes for Wastewater Treatment: A Critical Review on Effects of Operational Conditions and Environmental Stresses

Performance of Anammox Processes for Wastewater Treatment: A Critical Review on Effects of Operational Conditions and Environmental Stresses

Feasibility of CANON process for treating nitrogenous wastewater containing heavy metals

Effect of rare earth element Y(III) on short‐term denitrification performance of anaerobic ammonia oxidized granular sludge

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