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Abstract
Temperature is a key operational factor influencing the anammox process kinetics. In particular, at temperatures below 15 °C, the specific anammox activity (SAA) considerably decreases. This study aimed to describe the temperature dependence of the anammox process kinetics in the temperature range from 10 to 55 °C, including the specific characteristics of“cold anammox”. The commonly used Arrhenius and extended and modifiedRatkowsky equations were examined. The Ratkowskyequationsyieldedastrong correlation (coefficient of determination, R2= 0.93–0.96) between the measured and predicted data over the analyzed temperature range(10–55 °C). However, these equations could not correctly reflect the anammox temperature dependence at temperatures below 15 °C (R2= 0.36–0.48). Therefore, a new generalized temperature model was proposed. The generalized temperature equation (GTE) considered the division of the analyzed temperature range into three temperature ranges: 10–15 °C, 15–35 °C and 35–55 °C. The ranges correspond to“cold anammox”,“(low)mesophilic anammox” and “thermophilic anammox”. The applied approach yielded a strong correlation between the measured and predicted SAA (R2= 0.97) over the temperature range from 10 to 55 °C and over the low-temperature range from 10 to 15 °C (R2= 0.99). Overall, the GTE could enhance the predictions of the temperature dependence of the anammox process kinetics. The GTE can help examine anammox-based bioaugmentation systems operating at both high temperatures (sidestream reactors) and low temperatures (mainstream reactors).
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Authors (3)
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Jun Zhai
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- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
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SCIENCE OF THE TOTAL ENVIRONMENT
no. 775,
ISSN: 0048-9697 - Language:
- English
- Publication year:
- 2021
- Bibliographic description:
- Sobotka D., Zhai J., Mąkinia J.: Generalized temperature dependence model for anammox process kinetics// SCIENCE OF THE TOTAL ENVIRONMENT -Vol. 775, (2021), s.145760-
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.scitotenv.2021.145760
- Verified by:
- Gdańsk University of Technology
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