At Aster Bio we have been bench testing several new organisms with the goal of converting sulfides and H2S into harmless oxidized forms at non-acidic pH. While many Thiobacillus cultures exist that oxidize reduced sulfur, they tend to thrive at pH levels below 5 which is outside the range of many other organisms. So, we started looking for other sulfur oxidizing cultures that worked at higher pH.
After screening a number of candidates, we found some unique microbes with excellent applicability to waste treatment. The first is a Paracoccus denitrificans. This unusual bacterium has a number of key metabolic pathways that are useful in control of both sulfides and malodorous short-chain volatile fatty acids. An additional benefit, is the P. denitrificans can utilize nitrate/nitrate when growing on the short-chain volatile fatty acids. So what does all this mean for waste treatment?
Erik Rumbaugh has been involved in biological waste treatment for over 20 years. He has worked with industrial and municipal wastewater facilities to ensure optimal performance of their treatment systems. He is a founder of Aster Bio (www.asterbio.com) specializing in biological waste treatment.
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