Comparative Study of the Effect of Vacuum-Ultraviolet Irradiation on Natural Organic Matter of Different Sources

2014 ◽  
Vol 140 (3) ◽  
pp. 04013016 ◽  
Author(s):  
Gustavo Imoberdorf ◽  
Madjid Mohseni
Keyword(s):  
Organic Matter ◽  
Comparative Study ◽  
Natural Organic Matter ◽  
Ultraviolet Irradiation ◽  
Vacuum Ultraviolet ◽  
Different Sources

Effects of natural organic matter and nitrate on the behavior of nitrosodimethylamine during ultraviolet irradiation and chloramination

2014 ◽  
Vol 63 (4) ◽  
pp. 260-267 ◽  
Author(s):  
Hiroshi Sakai ◽  
Tatsuro Takamatsu ◽  
Kumiko Oguma ◽  
Michio Murakami ◽  
Koji Kosaka ◽  
...  
Keyword(s):  
Organic Matter ◽  
Natural Organic Matter ◽  
Ultraviolet Irradiation

Comparative Study of Ozone Alone and Catalytic Ozonation for Transformation of Natural Organic Matter in River Water

2011 ◽  
Vol 183-185 ◽  
pp. 1312-1316
Author(s):  
Gang Wen ◽  
Jun Ma ◽  
Xing Fang
Keyword(s):  
Molecular Weight ◽  
Organic Matter ◽  
Water Treatment ◽  
Comparative Study ◽  
River Water ◽  
Natural Organic Matter ◽  
Removal Rate ◽  
Catalytic Ozonation ◽  
Experimental Results ◽  
Promising Method

Ozone alone and catalytic ozonation of natural organic matter had been carried out in semibatch model reactor. The experimental results demonstrated that ozonation alone and catalytic ozonation are equivalent with minimization of natural organic matter(NOM), with the removal rate of TOC, UV254 about 7 % and 50 % respectively. But it is a promising method for changing the molecular weight and specially for enhancement of biodegradation. The AOC in river water was 233 ug L-1, which increase up to 325 ug L-1, 677 ug L-1, 633 ug L-1 in ozonation alone, catalytic ozonation (H2O2) and catalytic ozonation (ZnO) after 30 minutes reaction respectively. Through the research, it can be conclued that catalytic ozonation-BAC may be an promising way for water treatment.

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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