scholarly journals Influence of Fe3+ Ions on Nitrate Removal by Autotrophic Denitrification Using Thiobacillus denitrificans

2017 ◽  
Vol 31 (2) ◽  
pp. 167-172 ◽  
Author(s):  
Z. Blažková
Keyword(s):  
Nitrate Removal ◽  
Thiobacillus Denitrificans ◽  
Autotrophic Denitrification

Coupled Sulfur and Iron(II) Carbonate-Driven Autotrophic Denitrification for Significantly Enhanced Nitrate Removal

2018 ◽  
Vol 53 (3) ◽  
pp. 1545-1554 ◽  
Author(s):  
Ting-ting Zhu ◽  
Hao-yi Cheng ◽  
Li-hui Yang ◽  
Shi-gang Su ◽  
Hong-cheng Wang ◽  
...  
Keyword(s):  
Nitrate Removal ◽  
Autotrophic Denitrification

scholarly journals Light-driven nitrous oxide production via autotrophic denitrification by self-photosensitized Thiobacillus denitrificans

2019 ◽  
Vol 127 ◽  
pp. 353-360 ◽  
Author(s):  
Man Chen ◽  
Xiao-Fang Zhou ◽  
Yu-Qing Yu ◽  
Xing Liu ◽  
Raymond Jian-Xiong Zeng ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Thiobacillus Denitrificans ◽  
Autotrophic Denitrification ◽  
Oxide Production ◽  
Nitrous Oxide Production

Nitrate removal with lateral flow sulphur autotrophic denitrification reactor

2014 ◽  
Vol 35 (21) ◽  
pp. 2692-2697 ◽  
Author(s):  
Xiaomei Lv ◽  
Mingfei Shao ◽  
Ji Li ◽  
Chuanbo Xie
Keyword(s):  
Nitrate Removal ◽  
Lateral Flow ◽  
Autotrophic Denitrification ◽  
Denitrification Reactor

Nitrate removal and microbial analysis by combined micro-electrolysis and autotrophic denitrification

2016 ◽  
Vol 211 ◽  
pp. 240-247 ◽  
Author(s):  
Wei Xing ◽  
Desheng Li ◽  
Jinlong Li ◽  
Qianyi Hu ◽  
Shihai Deng
Keyword(s):  
Nitrate Removal ◽  
Autotrophic Denitrification ◽  
Microbial Analysis

scholarly journals Nitrate Removal from Actual Wastewater by Coupling Sulfur-Based Autotrophic and Heterotrophic Denitrification under Different Influent Concentrations

Water ◽  
2021 ◽  
Vol 13 (20) ◽  
pp. 2913
Author(s):  
Feng Liu ◽  
Suqin Wang ◽  
Xuezhi Zhang ◽  
Feiyue Qian ◽  
Yaobing Wang ◽  
...  
Keyword(s):  
Removal Efficiency ◽  
Nitrate Removal ◽  
Operating Conditions ◽  
Coupled Systems ◽  
Polluted Water ◽  
Sequencing Analysis ◽  
Autotrophic Denitrification ◽  
Actual Wastewater ◽  
Denitrification Process ◽  
Heterotrophic Denitrification

Contamination of wastewater with organic-limited nitrates has become an urgent problem in wastewater treatment. The cooperating heterotrophic with sulfur autotrophic denitrification is an alternative process and the efficiency has been assessed in many studies treating simulated wastewater under different operating conditions. However, due to the complex and diverse nature of actual wastewater, more studies treating actual wastewater are still needed to evaluate the feasibility of collaborative denitrification. In this study, lab-scale experiments were performed with actual nitrate polluted water of two different concentrations, with glucose and sodium thiosulfate introduced as mixed electron donors in the coupling sulfur-based autotrophic and heterotrophic denitrification. Results showed that the optimum denitrification performance was exhibited when the influent substrate mass ratio of C/N/S was 1.3/1/1.9, with a maximum denitrification rate of 3.52 kg NO3−-N/(m3 day) and nitrate removal efficiency of 93% in the coupled systems. Illumina high-throughput sequencing analysis revealed that autotrophic, facultative, and heterotrophic bacteria jointly contributed to high nitrogen removal efficiency. The autotrophic denitrification maintained as the predominant process, while the second most prevalent denitrification process gradually changed from heterotrophic to facultative with the increase of influent concentration at optimum C/N/S ratio conditions. Furthermore, the initiation of dissimilatory nitrate reduction to ammonium (DNRA) was very pivotal in promoting the entire denitrification process. These results suggested that sulfur-based autotrophic coupled with heterotrophic denitrifying process is an alternative and promising method to treat nitrate containing wastewater.

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