Anaerobic biodegradation inhibition

Pearson, F., Shiun-Chung, C., and Gautier, M., Toxic inhibition of anaerobic biodegradation, J. Water Pollut. Control Fed., 52, 472-482, 1980. 

Surfactants such as LAS and NPEO have been found in compartments with low oxygen content, such as anaerobic sludge digesters or anaerobic continental and marine sediments [14,15,18-25]. One of the possible causes of this persistence is the inhibition of the anaerobic digestion [17,26,27]. Battersby and Wilson [27] observed inhibitory effects of NP at 50 mg CL-1 on methane formation in a survey of the anaerobic biodegradation potential of organic chemicals in digesting... 

For coal hquefaction wastewater, phenol and o-, m- and p-cresol were removed from the wastewater but no removal was observed for acetate or propionate. The results of this study could be used to design an effective extraction system for the removal of short-chain fatty acids, which have been shown to inhibit anaerobic biodegradation of different types of waste-waters [93]. This is desirable to avoid the inhibitory effect ofthe short-chain fatty acids on the course of the treatment process. 

Presence of other organic contaminants may inhibit biodegradation Degradation pathways for anaerobic processes not as well understood as aerobic pathways anaerobic processes typically slower... 

Biodegradation of fuel oils in sediments is inhibited under anaerobic conditions (Bartha and Atlas 1977). Under anaerobic conditions, some soil microorganisms are capable of nitrate reduction using fuel oils as the carbon source, although nitrite may be an unwanted by-product. However, the addition of a small amount of oxygen (0.2 volume percent oxygen) to the medium can accelerate the degradation of the oil without the concomitant production of nitrite (Riss and Schweisfurth 1987). 

Gartiser, S., Urich, E., Alexy, R., Kiimmerer, K. (2007). Anaerobic inhibition and biodegradation of antibiotics in ISO test schemes. Chemosphere 66 1839-1848. 

BIOLOGICAL PROPERTIES BOD is moderate persistence for several weeks biodegradation is slow at low concentrations, but will inhibit bacteria at high concentrations 100% loss when 5 and 10 mg/L underwent a static incubation in the dark 25° C with 7 day sewage innoculum if released to soil, will leach extensively aerobic half-life 7 days-4 weeks anaerobic half-life 4 weeks-4 months ground water half-life 14 days-8 weeks surface water half-life 7 days-4 weeks overall half-life in water 2-6 days can be detected in water by EPA Method 603 gas chromatography, or EPA Method 624 gas chromatography plus mass spectrometry... 

Generally, soaps are readily biodegradable up to a concentration of 1000 mg/1. Soaps with shorter alkyl chains are faster degraded. In addition, they do not inhibit the biodegradation of other organic substance contained in domestic waste-water. Soaps are readily biodegradable under anaerobic conditions. Non-soluble calcium soaps show the same behaviour if the particle size is small enough. 

Biodegradation in seawater Anaerobic Adsorption/ biodegradation Desorption in Soil Acute toxicity to fish Acute Toxicity to Invertebrates Growth inhibition test on algae Inhibition of microbiological activity Effects on reproduction and growth on fish... 

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