Rejection property of geosmin and 2-Methylisoborneol (MIB) with high concentration level at multi stage nanofiltration (NF) membrane system

Biodegradation rates of 2-methylisoborneol (MIB) and geosmin through sand filters and in bioreactors.

Taste and odour (T&O) causing compounds, in particular, 2-methylisoborneol (MIB) and geosmin, are a problem for water authorities as they are recalcitrant to conventional water treatment. In this study, biological sand filtration was shown to be an effective process for the complete removal of MIB and geosmin, with removal shown to be predominantly through biodegradation. In addition, MIB and g...

Nanofiltration of synthetic and industrial dye baths: Influence of temperature on rejection and membrane fouling

Nanofiltration (NF) has become a widely accepted process not only for producing drinking water but also for recovering wastewater in industrial processes or removing pollutants from industrial wastewater effluent. In the textile industry, the treatment of various dye baths with NF at room temperature have already been studied and was found feasible at lab-scale and pilot scale. The aim of this ...

Biochemical and ecological control of geosmin and 2-methylisoborneol in source waters.

The majority of all biologically caused taste-and-odor outbreaks in drinking water characterized worldwide are caused by microbial production of ( )-geosmin [( )-(4S,4aS,8aR)-4,8adimethyloctahydronaphthalen-4a-ol] and ( )-2-methylisoborneol (2-MIB) {(1R-exo)-1,2,7,7-tetramethylbicyclo[2.2.1]heptan-2-ol}. Since they were first identified in the early 1960s, these two earthy-muddy-smelling metabo...

Nanofiltration (NF) membrane process with pre-ozonation for brine treatment

Purge-and-Trap Extraction of Geosmin and 2-Methylisoborneol from Soil

Although a number of techniques are available for estimating the biomass of filamentous microorganisms in soil, determination of their activity is much more difficult. We report on preliminary studies evaluating the potential use of the volatile microbial secondary metabolites geosmin and methylisoborneol as indicators of activity of filamentous microorganisms. The purge-and-trap technique for ...