Aquatic Phototransformation of Organic Contaminants Induced by Coloured Dissolved Natural Organic Matter

2005 ◽  
pp. 299-323 ◽  
Author(s):  
Claire Richard ◽  
Silvio Canonica
Keyword(s):  
Organic Matter ◽  
Natural Organic Matter ◽  
Organic Contaminants

scholarly journals NO2 and natural organic matter affect both soot aggregation behavior and sorption of S-metolachlor

2019 ◽  
Vol 21 (10) ◽  
pp. 1729-1735 ◽  
Author(s):  
Gabriel Sigmund ◽  
Stephanie Castan ◽  
Christopher Wabnitz ◽  
Rani Bakkour ◽  
Thorsten Hüffer ◽  
...  
Keyword(s):  
Organic Matter ◽  
Surface Charge ◽  
Natural Organic Matter ◽  
Organic Contaminants ◽  
Aggregation Behavior ◽  
P Transformation

Transformation of soot with NO2 and interactions with NOM decreased the soot surface charge, size and sorption affinity for organic contaminants.

scholarly journals Removal of natural organic matter from groundwater using fenton’s process

2013 ◽  
Vol 15 (1) ◽  
pp. 13-20 ◽  
Keyword(s):  
Organic Matter ◽  
Natural Organic Matter ◽  
Organic Contaminants ◽  
Ph Value ◽  
Research Performance ◽  
Drinking Water Treatment ◽  
Disinfection Byproducts ◽  
Water Disinfection ◽  
Trihalomethane Formation Potential ◽  
Fenton's Process

Groundwater in the area of eastern Croatia contains increased concentrations of organic compounds, primarily natural organic matter (NOM). Organic compounds in water become a problem in drinking water treatment, especially during water disinfection with chlorine, when harmful disinfection by-products like trihalomethanes appear. Therefore, the removal of disinfection byproducts (DBP) precursors gains high importance. This paper deals with the efficiency of NOM removal from groundwater by the Fenton’s process and its influence on trihalomethane formation potential (THMFP). In this research performance of Fenton process at conditions close to conditions of natural groundwater was investigated. pH value was not decreased under 4.5 and attempt was done to perform Fenton’s process at natural iron concentration in groundwater of town Osijek area. Once optimized, process achieved about 50 % removal of TOC (2.5 mM H2O2; 0.1 mM Fe2+; pH 4.5) and decrease of THMFP (A254/A203) for about 70 % (5 mM H2O2; 0.1 mM Fe2+; pH 4.5). Under adequate conditions Fenton process could be successfully used for the removal of organic contaminants from groundwater.

Characterization of dissolved organic matter (DOM) extracted from soils by hot water percolation (HWP)

2010 ◽  
Vol 59 (1) ◽  
pp. 99-108 ◽  
Author(s):  
M. Takács ◽  
Gy. Füleky
Keyword(s):  
Organic Matter ◽  
Humic Acid ◽  
Natural Organic Matter ◽  
Extraction Methods ◽  
Soil Samples ◽  
Hot Water ◽  
Soil Extracts ◽  
Water Percolation ◽  
Soil Humic Acid

The Hot Water Percolation (HWP) technique for preparing soil extracts has several advantages: it is easily carried out, fast, and several parameters can be measured from the same solution. The object of this study was to examine the possible use of HWP extracts for the characterization of soil organic matter. The HPLC-SEC chromatograms, UV-VIS and fluorescence properties of the HWP extracts were studied and the results were compared with those of the International Humic Substances Society (IHSS) Soil Humic Acid (HA), IHSS Soil Fulvic Acid (FA) and IHSS Suwannee Natural Organic Matter (NOM) standards as well as their HA counterparts isolated by traditional extraction methods from the original soil samples. The DOM of the HWP solution is probably a mixture of organic materials, which have some characteristics similar to the Soil FA fractions and NOM. The HWP extracted organic material can be studied and characterized using simple techniques, like UV-VIS and fluorescence spectroscopy.

Characterization and isolation of natural organic matter from a eutrophic reservoir

2000 ◽  
Vol 49 (5) ◽  
pp. 269-280 ◽  
Author(s):  
Cheng-Nan Chang ◽  
Ying-Shih Ma ◽  
Guor-Cheng Fang ◽  
Fang-Fong Zing
Keyword(s):  
Organic Matter ◽  
Natural Organic Matter ◽  
Eutrophic Reservoir
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