Inducement mechanism and control of self-acidification in elemental sulfur fluidizing bioreactor.
- Publisher:
- Elsevier
- Publication Type:
- Journal Article
- Citation:
- Bioresour Technol, 2023, 393, pp. 130081
- Issue Date:
- 2023-11-20
Embargoed
Filename | Description | Size | |||
---|---|---|---|---|---|
Inducement mechanism and control of self-acidification in elemental sulfur fluidizing bioreactor..pdf | Accepted version | 639.27 kB |
Copyright Clearance Process
- Recently Added
- In Progress
- Open Access
This item is currently unavailable due to the publisher's embargo.
The sulfur fluidizing bioreactor (S0FB) has significant superiorities in treating nitrate-rich wastewater. However, substantial self-acidification has been observed in engineering applications, resulting in frequent start-up failures. In this study, self-acidification was reproduced in a lab-scale S0FB. It was demonstrated that self-acidification was mainly induced by sulfur disproportionation process, accounting for 93.4 % of proton generation. Supplying sufficient alkalinity to both the influent (3000 mg/L) and the bulk (2000 mg/L) of S0FB was essential for achieving a successful start-up. Furthermore, the S0FB reached 10.3 kg-N/m3/d of nitrogen removal rate and 0.13 kg-PO43-/m3/d of phosphate removal rate, respectively, surpassing those of the documented sulfur packing bioreactors by 7-129 times and 26-65 times. This study offers a feasible and practical method to avoid self-acidification during restart of S0FB and highlights the considerable potential of S0FB in the treatment of nitrate-rich wastewater.
Please use this identifier to cite or link to this item: