Results 171 to 180 of about 22,929 (210)
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Effect of ammonia oxidizing bacteria (AOB) kinetics on bioaugmentation
Bioresource Technology, 2012Bioaugmentation with ammonium oxidizing bacteria (AOB) was tested for 620d. A seeding reactor (R1), two seeded reactors (R2 at 21°C; R3 at 15°C) and an unseeded-control reactor (R4 at 21°C) were operated in parallel (2 ...
MUNZ, GIULIO, Szoke N, Oleszkiewicz J.
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Unravelling the reasons for disproportion in the ratio of AOB and NOB in aerobic granular sludge [PDF]
Applied Microbiology and Biotechnology, 2012 In this study, we analysed the nitrifying microbial community (ammonium-oxidizing bacteria (AOB) and nitrite-oxidizing bacteria (NOB)) within three different aerobic granular sludge treatment systems as well as within one flocculent sludge system. Granular samples were taken from one pilot plant run on municipal wastewater as well as from two lab-scale
Robbert Kleerebezem +2 more
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Kinetic analysis on the two-step processes of AOB and NOB in aerobic nitrifying granules
Applied Microbiology and Biotechnology, 2009 Complete granulation of nitrifying sludge was achieved in a sequencing batch reactor. For the granular sludge, batch experiments were conducted to characterize the kinetic features of ammonia oxidizers (AOB) and nitrite oxidizers (NOB) in the granules ...
Han-Qing Yu, Xiao-Yan Li, Fang Fang
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Oxidative Stress and Antioxidant Biofactor (AOB®)
1997Antioxidant biofactor (AOB®) is an unique processed grain food obtained from soybean, wheat, rice germ, rice bran, tear grass, green tea, sesame, citron, green leaves extracts and malted rice. These ingredients were degraded to low molecular weight compounds by roast and fermentation with Aspergilus oryzae (Fig. 1).
Yukiko Minamiyama +4 more
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Effects of ultrasonic treatment on the ammonia-oxidizing bacterial (AOB) growth kinetics
Science of the Total Environment, 2019Ultrasound has in the past few decades found applications in a variety of disciplines including chemistry, medicine, physics, and to a much less extent microbiology. Our previous studies found that ultrasonic treatment increases the activity of ammonia-oxidizing bacteria (AOB) while suppressing nitrite-oxidizing bacteria (NOB), resulting in beneficial ...
Qian Dong, Haoran Duan, Min Zheng
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Effects of temperature gradients on AOB/NOB competition in MABR biofilms
2020<p>The membrane aerated biofilm reactor (MABR) is an emerging wastewater treatment technology that can greatly decrease energy requirements for wastewater treatment. It consists of cassettes of air-supplying, hollow-fiber membranes that can retrofit existing activated sludge processes.
Patricia Perez +3 more
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Simulated distribution nitrification: Nitrification Index evaluation and viable AOB
Journal AWWA, 2013Lab‐scale reactors were used to evaluate the impact of simultaneously increasing temporal influent monochloramine (NH2Cl) concentrations (0.0 to 3.2 mg/L Cl2) and chlorine‐to‐nitrogen mass ratios (0:1 to 3.2:1) on nitrification, allowing evaluation of the recently proposed Nitrification Index (NI) for chloraminated drinking water distribution system ...
Karen A. Schrantz +2 more
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[Inhibiting Form of Ammonium to AOB and Inhibiting Rule].
Huan jing ke xue= Huanjing kexue, 2016The inhibiting form and rule of ammonium to ammonia oxidation bacteria ( AOB) were investigated through a series of batch experiments using biofilm reactor,in which the reaction conditions were controlled to 30 degrees C, HRT 4.76 h, ORP 100 mV. The results showed that when the AOB activity was half-inhibited at an ammonia nitrogen concentration of 2 ...
Jian-hong, Cui +4 more
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Manipulation of DNA damage checkpoint signaling in cancer cells by antioxidant biofactor (AOB)
Food Funct., 2013Antioxidant biofactor (AOB) is one of the fermented grain food supplements commercially available in Japan and other countries. Herein, we investigated the effect of AOB on the UVC (254 nm) induced DNA damage in A549 cells. Both distilled water and MeOH extracts of AOB did not show any significant cell toxicity.
Naoto, Tatewaki +4 more
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