Results 231 to 240 of about 13,726 (266)

Enhancing nitrogen removal in the partial denitrification/anammox processes for SO4− - Rich wastewater treatment: Insights into autotrophic and mixotrophic strategies

Journal of Environmental Management
The investigation of partial denitrification/anammox (PD/anammox) processes was conducted under autotrophic (N-S cycle) and mixotrophic (N-S-C cycle) conditions over 180 days.
Dominika Grubba, Hussein E Al-Hazmi, Joanna Majtacz   +2 more
exaly   +2 more sources

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Mathematical modeling of autotrophic denitrification (AD) process with sulphide as electron donor

Water Research, 2016
Autotrophic denitrification (AD) plays a critical role in nitrate removal from organic carbon-deficient wastewaters with a high level of nitrogen oxides. However, the AD process is not included in the current denitrification models, which limits the application of AD technology for wastewater treatment.
Guihua Xu, Fengjun Yin, Shaohua Chen, Yuanjian Xu, Han-Qing Yu   +4 more
openaire   +2 more sources

Optimization of sulfide‐based autotrophic denitrification process in an anaerobic baffled reactor

Journal of Chemical Technology & Biotechnology, 2017
AbstractBACKGROUNDHigh SO42‐, COD, and nitrogen‐containing wastewater treatment requires different bacterial groups and environmental conditions, which can be achieved by sequential separate processes. This study examined the simultaneous removal of SO42‐, COD and nitrogen in a four‐compartment ABR, which allowed enrichment of different group of ...
Ozdemir, Sebnem, Duyar, Ahmet, Akman, Dilek, Akgul, Vildan, ŞAHİNKAYA, ERKAN, CIRIK, KEVSER   +5 more
openaire   +3 more sources

Performance, comparison and utilization of reduced sulfur (−2) compounds (S2−, FeS and SCN−) in autotrophic denitrification process by thiosulfate-driven autotrophic denitrifier

Environmental Research, 2023
The coexistence of reduced sulfur (-2) compounds (S2-, FeS and SCN-) are found in some industrial wastewaters due to pre-treatment of Fe(II) salts. These compounds as electron donors have attracted increasing interest in autotrophic denitrification process.
Liangliang Liu, Yangjin Xu, Hanping Pan, Cunxue Yu, Qian Liu, Chaohai Wei, XiuFang Zhao, Meirong Su, Jianxin Pan   +8 more
openaire   +2 more sources

Simultaneous removal of thiocyanate and nitrogen from wastewater by autotrophic denitritation process

Bioresource Technology, 2018
Pollutants containing sulfur as electron donors will play an important role in the energy-saving denitritation process when organic carbon source was insufficient in wastewater. However, thiocyanate (SCN-), a hazardous pollutant, has not been characterized in denitritation.
Jianxin, Pan, Jingde, Ma, Haizhen, Wu, Yuan, Ren, Bingbing, Fu, Meiling, He, Shuang, Zhu, Chaohai, Wei   +7 more
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[Autotrophic denitrification of groundwater by electrochemical process].

Huan jing ke xue= Huanjing kexue, 2002
An autotrophic denitrification process and its reactor for removing nitrate from groundwater was investigated in this paper. Using activated carbon fiber(ACF) as electrodes, the electrochemical reactions could produce hydrogen as the donor for autotrophic denitrification. In the process, nitrate was removed effectively and no accumulation of nitrite in
J, Qu, B, Fan, S, Liu, P, Lei, H, Liu
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Succession processes in a food web of a two autotroph-one herbivore system

Biosystems, 2000
This paper deals with the succession process of a food web model consisting of one herbivore, two autotrophs and available nutrient in the environment in a closed nutrient flux. The model provides a way of describing successional changes in the form of species replacement with increasing nutrient levels.
D, Kesh, A K, Sarkar, A B, Roy
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Unraveling the impact of perfluorooctanoic acid on sulfur-based autotrophic denitrification process

Journal of Hazardous Materials
PFOA has garnered heightened scrutiny for its impact on denitrification, especially given its frequent detection in secondary effluent discharged from wastewater treatment plants. However, it is still unclear what potential risk PFOA release poses to a typical advanced treatment process, especially the sulfur-based autotrophic denitrification (SAD ...
Hong-Xu, Bao, Zhou-Yang, Li, Chen, Chen, Min, Li, Xue-Ning, Zhang, Kang, Song, Yi-Lu, Sun, Ai-Jie, Wang   +7 more
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Shortcut Nitrification and ANAMMOX Combined Process for Autotrophic Ammonia Removal

2009 3rd International Conference on Bioinformatics and Biomedical Engineering, 2009
The shortcut nitrification was realized in a sequencing batch reactor (SBR) when the temperature and pH value were controlled at 28~30degC and 7.8~8.1. The nitrogen removal loading reached 0.129 kg NH 4 + -Nldrkg -1 VSSldrd -1 by increasing the influent ammonia concentration. More than 85% of the nitrite accumulative efficiency was achieved and the
Yongtao Lu, Lei Wang, Xudong Wang, Ting Sun, Rong Yang, Zhiying Wang   +5 more
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Chapter 14 Economic framework of autotrophic processes

2021
Sarah Refai, Jonathan Z. Bloh, Markus Müller   +2 more
openaire   +1 more source