Comparison of CSTR and UASB reactor configuration for the treatment of sulfate rich wastewaters under acidifying conditions

Performance of a sulfidogenic bioreactor and bacterial community shifts under different alkalinity levels

“…VFA production was the major electron sink throughout the operation (Fig. 1), as was also observed by Lopes et al (2008). Under natural influent alkalinity, 68% of the electrons were channeled to VFA production, and acetate amounted to 49% of the electron flow; while only 5% of the electrons were consumed by sulfate reduction.…”

Sulfidogenesis in Pretreatment of High-Sulfate Acidic Wastewater Using Anaerobic Sequencing Batch Reactor and Upflow Anaerobic Sludge Blanket Reactor

“…UASB reactor using molasses as a carbon source could achieve sulfate reduction above 80% at a COD:S ratio greater than 10 (Annachhatre and Suktrakoolvait, 2001). Higher sulfate removal was found in UASB compared with completely stirred tank reactor (CSTR) operated under the same condition at pH 5-6 (Lopes et al, 2008). Sulfate removal is associated with the presence of sulfate-reducing bacteria (SRB), which tend to grow in a disperse mode.…”

Complete genome analysis of Clostridium bornimense strain M2/40T: A new acidogenic Clostridium species isolated from a mesophilic two-phase laboratory-scale biogas reactor

“…Thereby biogas production from organic wastes is economically favorable and eco-friendly (Chanakya et al, 2009;Divya et al, 2015). As a consequence, many studies addressing biogas production (Havukainen et al, 2014;Chae et al, 2008), optimization of its synthesis (Qiao et al, 2011;Gomez et al, 2006) and different process specifications and configurations (Lopes et al, 2008) have been published.…”