Author
Xuan Lu
Bio: Xuan Lu is an academic researcher from Central South University. The author has contributed to research in topics: Anammox. The author has an hindex of 2, co-authored 2 publications receiving 15 citations.
Topics: Anammox
Papers
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TL;DR: In this paper, NH2OH was employed to test the recovery performance because of its stimulation to anammox bacteria, and the recovery efficiency was over 166% with the effluent Cr(VI and Cr(III) below 0.25 and 0.12% respectively.
15 citations
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TL;DR: The results showed that Cu2+ exerted severe inhibition on nitritation performance of an air-lift reactor (ALR) at 25 mg/L, and acted as uncompetitive inhibitor onNitritation process.
Abstract: Biological nitrogen removal process could be affected due to the presence of heavy metals owing to their toxicity and accumulation in the sludge. In this study, the impact of Cu2+ shock on a long-term nitritation operation was investigated in an air-lift reactor with self-recirculation. Both the dynamics of microbial community and inhibition kinetics under Cu2+ stress were ascertained. The results showed that Cu2+ exerted severe inhibition on nitritation performance of an air-lift reactor (ALR) at 25 mg/L. The corresponding NH4+-N removal efficiency decreased to below 50%, which was mainly due to the variation of microbial community structure, especially the inhibition of nitrifiers like Nitrosomonas (the relative abundance decreased from 30% to 1% after Cu2+ inhibition). Kinetic parameters were obtained and compared after fitting the Haldane model. The long-term Cu2+ stress on the ALR aggravated the ammonium affinity and the resistance to substrate self-inhibition of the nitritation sludge, but reduced the resistance to Cu2+ inhibition. Furthermore, Cu2+ acted as uncompetitive inhibitor on nitritation process. Our results provide new insights into the nitritation characteristics under long-term Cu2+ stress.
12 citations
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TL;DR: For quantitative evaluation of the Anammox granules flotation in upflow reactors, an integrated mathematical model was formulated based on the principles that the limitation of substrate diffusion would result in bacterial starvation, lysis and subsequently aiding the formation of cavitation in the inner zone of granules.
74 citations
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University of Sri Jayewardenepura1, University of Kelaniya2, Open University of Sri Lanka3, Pusan National University4, Kalyani Government Engineering College5, Commonwealth Scientific and Industrial Research Organisation6, Universiti Malaysia Terengganu7, Sri Sivasubramaniya Nadar College of Engineering8
TL;DR: In this paper, the authors provide a comprehensive viewpoint on anammox bacteria and the key perspectives in applying them as an efficient strategy for wastewater treatment, and provide a review article on the recent yet comprehensive viewpoint.
38 citations
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TL;DR: In this article, a compilation of the studies assessing the inhibitory effects of different wastewater pollutants towards anammox activity is presented, including antibiotics, aromatics, azoles, surfactants, microplastics, organic solvents, humic substances, biodegradable organic matter, or metallic nanoparticles.
27 citations
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TL;DR: In this paper , NH2OH addition (HA) and bio-augmentation (BA) tactics on start-up and operation performance of DEAMOXs (R1 and R2) under ambient temperature (11.3-31.7 °C).
19 citations
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TL;DR: In this article, NH2OH addition (HA) and bio-augmentation (BA) tactics on start-up and operation performance of DEAMOXs (R1 and R2) under ambient temperature (11.3-31.7°C).
19 citations