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Thermophiles control

As already stated, aggression will also depend on soil Eh according to the scale given in Table 2.21. Temperature is also a controlling factor and both psychrophylic (cold) and thermophilic (hot) forms are known, e.g. in electrical transformers, hot water systems. [Pg.398]

Mid-IR spectroscopy, alongside gravimetric and molecular weight determinations, has also been used to analyse the biodegradation by a thermophilic bacterium (isolated from soil) of an LDPE film [44], The mid-IR studies were undertaken using the ATR sampling technique on control samples, samples that had been UV irradiated, and samples that had been UV irradiated then incubated with bacteria. The study showed that the particular bacterial strain was capable of utilising standard and photo-oxidised polyethylene as the sole carbon source. [Pg.411]

In order to determine more precisely the fate of pharmaceuticals during sludge treatment, different experiments have been conducted in controlled conditions. In continuous anaerobic reactors treating sludge spiked with pharmaceuticals, Carballa et al. [114] observed removals higher than 80% for naproxen, sulfamethoxazole, and roxithromycin, while 40% and 23% of ibuprofen and iopromide, respectively, were eliminated at both mesophilic (37°C) and thermophilic (55°C) temperatures. For diclofenac and diazepam, elimination of about 60% was observed in mesophilic conditions while in thermophilic conditions, 38% and 73% of these two compounds, respectively, were eliminated. In these experiments, the sludge retention time (15 or 30 days) did not seem to influence pharmaceutical removal... [Pg.101]

Seif, H.A.A. Joshi, S.G. Gupta, S.K. Treatment of pharmaceutical wastewater by anaerobic mesophilic and thermophilic fixed film reactors. First Symposium on Hazard Assessment and Control of Environmental Contaminants in Water, Kyoto, Japan, 1991 630-637. [Pg.234]

In the following sections, we will discuss the influence of several reaction parameters such as temperature, degree of stirring, and the presence of gas/liquid surfaces on the deactivation behavior of proteins. Mechanisms of enzyme inactivation and aggregation are still poorly understood so, in the best case, the rate of activity loss can be correlated with system parameters such as surface area, power input, or collision frequency. However, the ability to control the resistance of an enzyme to inactivation due to exposure to elevated temperatures is essential for the understanding of thermophilic behavior and for developing rational approaches to enzyme stabilization. [Pg.501]

In this article, we present our findings on hydrogen production by the extreme thermophilic C. saccharolyticus using paper sludge hydrolysate in a controlled laboratory fermentor, which allowed accurate determinations of hydrogen yields and production rates. [Pg.499]

A control loop based on H2 measurements has been set up by Lloyd and Whitmore [243] and Whitmore et al. [457] in order to prevent inhibition of methanogenesis they controlled the addition of the carbon source to a thermophilic anaerobic digestion process. Even linked p02, pH and OUR control are reported based on direct mass spectrometric measurements [103,312]. [Pg.31]

A managed process that controls the biological decomposition of biodegradable materials into a humus-like substance called compost The aerobic and mesophilic and thermophilic degradation of organic matter to make compost the transformation of biologically decomposable materials through a controlled process of bio-oxidation... [Pg.146]

Ben-Bassat A., Lamed R., and Zeikus J. G. (1981) Ethanol production by thermophilic bacteria metabolic control of end product formation in Thermoanaerobium brockii. J. Bacteriol. 146, pp. 192-199. [Pg.4258]

It is important to develop a cheap and easy control system of culture medium temperature, in order to keep the higher productivity. Also, utilization of a thermophilic microalgae is considered to be an effective choice in summer. [Pg.486]


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See also in sourсe #XX -- [ Pg.385 ]




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Thermophiles

Thermophilic

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