Microbe; Removal of Hazardous Organic Compounds

1982 ◽  
Vol 16 (3) ◽  
pp. 170-183 ◽  
Keyword(s):  
Organic Compounds ◽  
Hazardous Organic Compounds

Recent Trends in the Development of Green Microextraction Techniques for the Determination of Hazardous Organic Compounds in Wine

2019 ◽  
Vol 15 (7) ◽  
pp. 788-800 ◽  
Author(s):  
Natasa P. Kalogiouri ◽  
Victoria F. Samanidou
Keyword(s):  
Sample Preparation ◽  
Solid Phase Extraction ◽  
Organic Compounds ◽  
Method Development ◽  
Solid Phase ◽  
Stir Bar Sorptive Extraction ◽  
Phase Extraction ◽  
Microextraction Techniques ◽  
Hazardous Organic Compounds

Background:The sample preparation is the most crucial step in the analytical method development. Taking this into account, it is easily understood why the domain of sample preparation prior to detection is rapidly developing. Following the modern trends towards the automation, miniaturization, simplification and minimization of organic solvents and sample volumes, green microextraction techniques witness rapid growth in the field of food quality and safety. In a globalized market, it is essential to face the consumers need and develop analytical methods that guarantee the quality of food products and beverages. The strive for the accurate determination of organic hazards in a famous and appreciated alcoholic beverage like wine has necessitated the development of microextraction techniques.Objective:The objective of this review is to summarize all the recent microextraction methodologies, including solid phase extraction (SPE), solid phase microextraction (SPME), liquid-phase microextraction (LPME), dispersive liquid-liquid microextraction (DLLME), stir bar sorptive extraction (SBSE), matrix solid-phase dispersion (MSPD), single-drop microextraction (SDME) and dispersive solid phase extraction (DSPE) that were developed for the determination of hazardous organic compounds (pesticides, mycotoxins, colorants, biogenic amines, off-flavors) in wine. The analytical performance of the techniques is evaluated and their advantages and limitations are discussed.Conclusion:An extensive investigation of these techniques remains vital through the development of novel strategies and the implication of new materials that could upgrade the selectivity for the extraction of target analytes.

scholarly journals Removal of Organic Pollution in the Water Environment

Water ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 2017 ◽  
Author(s):  
Joanna Karpińska ◽  
Urszula Kotowska
Keyword(s):  
Organic Compounds ◽  
Organic Contaminants ◽  
Water Environment ◽  
Organic Pollution ◽  
Polluted Water ◽  
New Methods ◽  
Emerging Organic Contaminants ◽  
Hazardous Organic Compounds ◽  
Methods Of Isolation

The development of civilization entails a growing demand for consumer goods. A side effect of the production and use of these materials is the production of solid waste and wastewater. Municipal and industrial wastewater usually contain a large amount of various organic compounds and are the main source of pollution of the aquatic environment with these substances. Therefore, the search for effective methods of wastewater and other polluted water treatment is an important element of caring for the natural environment. This Special Issue contains nine peer-review articles presenting research on the determination and removal of environmentally hazardous organic compounds from aqueous samples. The presented articles were categorized into three major fields: new approaches to the degradation of water pollutants, new methods of isolation and determination of the emerging organic contaminants (EOCs), and the occurrence of EOCs in the water environment. These articles present only selected issues from a very wide area, which is the removal of organic pollution in water environment, but can serve as important references for future studies.

scholarly journals The Spatial Distribution of the Microbial Community in a Contaminated Aquitard below an Industrial Zone

Water ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 2128 ◽  
Author(s):  
Noa Balaban ◽  
Irina Yankelzon ◽  
Eilon Adar ◽  
Faina Gelman ◽  
Zeev Ronen ◽  
...  
Keyword(s):  
Microbial Community ◽  
Organic Compounds ◽  
Polluted Water ◽  
Production Plant ◽  
Industrial Complex ◽  
Groundwater Environment ◽  
Plant Area ◽  
Volatile Halogenated Organic Compounds ◽  
Hazardous Organic Compounds ◽  
Nmds Analysis

The industrial complex Neot Hovav, in Israel, is situated above an anaerobic fractured chalk aquitard, which is polluted by a wide variety of hazardous organic compounds. These include volatile and non-volatile, halogenated, organic compounds. In this study, we characterized the indigenous bacterial population in 17 boreholes of the groundwater environment, while observing the spatial variations in the population and structure as a function of distance from the polluting source. In addition, the de-halogenating potential of the microbial groundwater population was tested through a series of lab microcosm experiments, thus exemplifying the potential and limitations for bioremediation of the site. In all samples, the dominant phylum was Proteobacteria. In the production plant area, the non-obligatory organo-halide respiring bacteria (OHRB) Firmicutes Phylum was also detected in the polluted water, in abundancies of up to 16 %. Non-metric multidimensional scaling (NMDS) analysis of the microbial community structure in the groundwater exhibited clusters of distinct populations following the location in the industrial complex and distance from the polluting source. Dehalogenation of halogenated ethylene was demonstrated in contrast to the persistence of brominated alcohols. Persistence is likely due to the chemical characteristics of brominated alcohols, and not because of the absence of active de-halogenating bacteria.

Mineralisation of hazardous organic compounds in a sludge reed bed and sludge storage

2005 ◽  
Vol 51 (9) ◽  
pp. 109-117 ◽  
Author(s):  
S. Nielsen
Keyword(s):  
Organic Compounds ◽  
Monitoring Programme ◽  
Anaerobic Conditions ◽  
Digested Sludge ◽  
Aerobic Conditions ◽  
Treatment Methods ◽  
Linear Alkylbenzene ◽  
Separate Treatment ◽  
Hazardous Organic Compounds ◽  
Reed Bed

Linear alkylbenzene sulphonates (LAS) and nonylphenolethoxylates (NPE) may be detrimental to the environment if spread in inappropriately large concentrations. Mineralisation of LAS and NPE in mesophilic digested sludge was observed during a 9-month monitoring programme where three separate treatment methods were investigated. Sludge was treated in a sludge reed bed under aerobic conditions, by storage in a container under anaerobic conditions, and by storage in a sludge pile turned over mechanically at intervals to improve the oxygen influx. Treatment in a sludge reed bed was shown to be effective. Mineralisation of 98% of LAS and 93% of NPE was observed. Only limited mineralisation occurred on the surface of the sludge stored in a container. A reduction of LAS and NPE of 90% and 43%, respectively, was observed in the sludge which was stored in a pile and frequently turned.

Kinetic Study of Thermal Degradation of Hazardous Organic Compounds in Different Atmospheres

2018 ◽  
Vol 35 (3) ◽  
pp. 159-168
Author(s):  
Haiping Xiao ◽  
Yu Ru ◽  
Dahai Yan ◽  
Li Li ◽  
Xiaowan Sun ◽  
...  
Keyword(s):  
Thermal Degradation ◽  
Kinetic Study ◽  
Organic Compounds ◽  
Hazardous Organic Compounds
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