The electronic nose as a rapid sensor for volatile compounds in treated domestic wastewater

Dewettinck, T.; Hege, K. Van; Verstraete, Willy

doi:10.1016/s0043-1354(00)00530-3

Cited by 71 publications

(35 citation statements)

References 18 publications

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“…Fluorescent or enzyme-linked immunoassays have been derived and can be used for a variety of contaminants, including pesticides and chlorinated polycyclic hydrocarbons. Enzymes specific for pollutants and attached to matrices detecting interactions between enzymes and pollutants are used in on-line biosensors of water and gas biotreatment (38,39).…”

Section: Biosensorsmentioning

confidence: 99%

Applications of Environmental Biotechnology

Ivanov

Hung

2010

Environmental Biotechnology

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Environmental biotechnology is a system of scientific and engineering knowledge related to the use of microorganisms and their products in the prevention of environmental pollution through biotreatment of solid, liquid, and gaseous wastes, bioremediation of polluted environments, and biomonitoring of environment and treatment processes. The advantages of biotechnological treatment of wastes are as follows: biodegradation or detoxication of a wide spectrum of hazardous substances by natural microorganisms; availability of a wide range of biotechnological methods for complete destruction of hazardous wastes; and diversity of the conditions suitable for biodegradation. The main considerations for application of biotechnology in waste treatment are technically and economically reasonable rate of biodegradability or detoxication of substances during biotechnological treatment, big volume of treated wastes, and ability of natural microorganisms to degrade substances. Type of biotreatment is based on physiological type of applied microorganisms, such as fermenting anaerobic, anaerobically respiring (anoxic), microaerophilic, and aerobically respiring microorganisms. All types of biotechnological treatment of wastes can be enhanced using optimal environmental factors, better availability of contaminants and nutrients, or addition of selected strain(s) biomass. Bioaugmentation can accelerate start-up or biotreatment process in case microorganisms, which are necessary for hazardous waste treatment, are absent or their concentration is low in the waste; if the rate of bioremediation performed by indigenous microorganisms -T. Hungis not sufficient to achieve the treatment goal within the prescribed duration; when it is necessary to direct the biodegradation to the best pathway of many possible pathways; and to prevent growth and dispersion in waste treatment system of unwanted or nondetermined microbial strain which may be pathogenic or opportunistic one. Biosensors are essential tools in biomonitoring of environment and treatment processes. Combinations of biosensors in array can be used to measure concentration or toxicity of a set of hazardous substances. Microarrays for simultaneous qualitative or quantitative detection of different microorganisms or specific genes in the environmental sample are also useful in the monitoring of environment.Key Words Environmental biotechnology r wastes r biotreatment r biodegradation r bioaugmentation r biosensors r biomonitoring.

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Section: Biosensorsmentioning

confidence: 99%

Applications of Environmental Biotechnology

Ivanov

Hung

2010

Environmental Biotechnology

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“…Its applicability as been tested in such diverse fields as the food industry, environmental studies, the automotive industry, microbiology and so on. E-noses have been used to monitor cultivation processes [1], and indoor air quality [2,3], to discriminate between polymer samples as a means to reduce the unpleasant odor of new cars in the automotive industry [4], to monitor volatile compounds in the effluent of a domestic wastewater treatment plant [5] and many more applications. However, in recent times more published literature has described the use of E-noses in food analysis, which includes process monitoring, shelf life investigation, freshness evaluation, authenticity assessment and other quality control studies [6].…”

Section: Introductionmentioning

confidence: 99%

An Electronic Nose for Reliable Measurement and Correct Classification of Beverages

Mamat

Samad

Hannan

2011

Sensors

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This paper reports the design of an electronic nose (E-nose) prototype for reliable measurement and correct classification of beverages. The prototype was developed and fabricated in the laboratory using commercially available metal oxide gas sensors and a temperature sensor. The repeatability, reproducibility and discriminative ability of the developed E-nose prototype were tested on odors emanating from different beverages such as blackcurrant juice, mango juice and orange juice, respectively. Repeated measurements of three beverages showed very high correlation (r > 0.97) between the same beverages to verify the repeatability. The prototype also produced highly correlated patterns (r > 0.97) in the measurement of beverages using different sensor batches to verify its reproducibility. The E-nose prototype also possessed good discriminative ability whereby it was able to produce different patterns for different beverages, different milk heat treatments (ultra high temperature, pasteurization) and fresh and spoiled milks. The discriminative ability of the E-nose was evaluated using Principal Component Analysis and a Multi Layer Perception Neural Network, with both methods showing good classification results.

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“…Potential applications of these instruments are related to food and beverage [2][3][4][5], cigarette [6], car [7], pharmaceutical [8,9], and paper industry [10], biotechnology [11,12], medicine [13][14][15][16], wastewater treatment plants [17,18], monitoring of indoor air [19] and odour pollution from pig and chicken slurry [20] and sewage treatment works [21]. This work describes the general concept of an electronic nose for the qualification of automotive fuel.…”

Section: Introductionmentioning

confidence: 99%