Efficient nitrite accumulation and elemental sulfur recovery in partial sulfide autotrophic denitrification system: Insights of seeding sludge, S/N ratio and flocculation strategy

Chemosphere ◽  
2021 ◽  
pp. 132388
Author(s):  
Zhongling Yuan ◽  
Yongzhi Chen ◽  
Ming Zhang ◽  
Yanrong Qin ◽  
Minan Zhang ◽  
...  
Keyword(s):  
Elemental Sulfur ◽  
Nitrite Accumulation ◽  
Autotrophic Denitrification ◽  
Sulfur Recovery

Evaluation of a hybrid physicochemical/biological technology to remove toxic H2S from air with elemental sulfur recovery

Chemosphere ◽  
2019 ◽  
Vol 222 ◽  
pp. 732-741 ◽  
Author(s):  
Antonio Velasco ◽  
Juan Manuel Morgan-Sagastume ◽  
Armando González-Sánchez
Keyword(s):  
Elemental Sulfur ◽  
Sulfur Recovery ◽  
Biological Technology

A novel boost circuit design and in situ electricity application for elemental sulfur recovery

2014 ◽  
Vol 248 ◽  
pp. 317-322 ◽  
Author(s):  
Jia Liu ◽  
Yujie Feng ◽  
Weihua He ◽  
Yuanyuan Gong ◽  
Youpeng Qu ◽  
...  
Keyword(s):  
Circuit Design ◽  
Elemental Sulfur ◽  
Sulfur Recovery

scholarly journals Autotrophic denitrification via nitrate as an effective approach for removal of dissolved sulfide in anaerobic reactors

2020 ◽  
Vol 82 (8) ◽  
pp. 1628-1634
Author(s):  
Jéssyca de Freitas Lima Brito ◽  
Camylla Rachelle Aguiar Araújo ◽  
Gabriel Alfredo Garcia Neto ◽  
André Bezerra dos Santos ◽  
Marcos Erick Rodrigues da Silva ◽  
...  
Keyword(s):  
Organic Matter ◽  
Elemental Sulfur ◽  
Complete Removal ◽  
Minor Effect ◽  
Autotrophic Denitrification ◽  
High Concentration ◽  
Anaerobic Reactors ◽  
Dissolved Sulfide ◽  
Nitrate Supplementation ◽  
A Minor

Abstract This work assessed the effect of adding different concentrations of nitrate (50–300 mg ·L−1) on the removal of dissolved and gaseous sulfide in an anaerobic reactor treating synthetic effluent containing sulfate (100 mg ·L−1) and organic matter (1 g COD·L−1). Autotrophic denitrification, stimulated by the addition of nitrate, was demonstrated to be a very effective approach for removal of dissolved sulfide even in the presence of a high concentration of organic matter (complete removal with 50 mg mg·L−1). However, it had a minor effect on H2S(g). Sulfide remained partially oxidized to elemental sulfur even with excess nitrate (100–300 mg mg·L−1). Therefore, the competition for this electron acceptor between the autotrophic and heterotrophic denitrification pathways may have prevented the conversion of the generated sulfide into sulfate again. No evidence of inhibition of methanogenesis and sulfidogenesis was found during nitrate supplementation.

Elemental Sulfur Recovery through H2Regeneration of a SO2-Adsorbed CuO/Al2O3

2007 ◽  
Vol 46 (8) ◽  
pp. 2661-2664 ◽  
Author(s):  
Youhua Zhao ◽  
Zhenyu Liu ◽  
Zhehua Jia ◽  
Xinyan Xing
Keyword(s):  
Elemental Sulfur ◽  
Sulfur Recovery
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