Investigation and optimization of a passively operated compost-based system for remediation of acidic, highly iron- and sulfate-rich industrial waste water

Reactivation of carbon exhausted sulfidogenic bioreactor by fractionated sweetmeat waste dosing: The role of neutralizing substance and nitrogen supplement

“…The exhaustion of available DOC is a common phenomenon in SMC packed bioreactors, as reported previously [6][7].…”

“…One of the limitations of using these plant waste based matrices is the depletion of available nutrients, especially organic carbon, over time, which leads to decreased treatment performance [3,[5][6][7]. SAPS or PRB treating sulfate rich wastewater often experience this problem and require periodic replacement of the matrix to maintain sufficient treatment performance [3].…”

The Family Desulfurellaceae

“…Desulfurella have been detected as part of communities in lactate-fed acidic mineral processing wastewater treatment reactors (Kaksonen et al 2004). Desulfurella were found also as major microbial players of a multistage bioremediation system utilizing composted agricultural waste products for the purification of acidic and iron-and sulfate-rich wastewater enriched from a pretreatment potato cell (Dann et al 2009). If Desulfurellaceae are to have applications in bioremediation, a particular advantage would be their growth under acidic and moderately thermophilic conditions.…”

Mineralogical Study of a Biologically-Based Treatment System That Removes Arsenic, Zinc and Copper from Landfill Leachate

“…Most effective for removal of metals, such as arsenic and zinc, are subsurface flow anaerobic systems, currently referred to as biochemical reactors (BCRs) [6,7]. Microbial activity within the organic-rich matrix creates alkalinity and reducing conditions that are conducive for metal precipitation at circumneutral pH values.…”