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A number of researchers have verified the inhibitory effects of elevated H 2 concentrations on various anaerobic fermentation processes. The objective of this work was to investigate the potential for using hydrogen gas production to predict upsets in anaerobic digesters operating on dairy cattle manure. In an ammonia nitrogen overload experiment, urea was added to the experimental digesters...
Alcaligenes xylosoxidans subsp. xylosoxidans (SH91) capable of biodegradation of thiodiglycol (TDG) were immobilized in poly(vinyl) alcohol (PVA) cryogels. Cryoimmobilized biocatalyst was formed as spherical granules with a diameter of 0.5 mm; the biomass concentration inside the gel matrix was as high as 10% (w/w). The immobilized cells were capable of rapid degradation of TDG in tap water or potassium...
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