The role of indirect photochemical degradation in the environmental fate of pesticides: a review

2014 ◽  
Vol 16 (4) ◽  
pp. 628 ◽  
Author(s):  
Christina K. Remucal
Keyword(s):  
Environmental Fate ◽  
Photochemical Degradation

Role of effluent organic matter in the photochemical degradation of compounds of wastewater origin

2017 ◽  
Vol 110 ◽  
pp. 170-179 ◽  
Author(s):  
Laleen C. Bodhipaksha ◽  
Charles M. Sharpless ◽  
Yu-Ping Chin ◽  
Allison A. MacKay
Keyword(s):  
Organic Matter ◽  
Photochemical Degradation ◽  
Effluent Organic Matter

Photochemical degradation of oxytetracycline: Influence of pH and role of carbonate radical

2015 ◽  
Vol 276 ◽  
pp. 113-121 ◽  
Author(s):  
Yiqing Liu ◽  
Xuexiang He ◽  
Xiaodi Duan ◽  
Yongsheng Fu ◽  
Dionysios D. Dionysiou
Keyword(s):  
Photochemical Degradation ◽  
Carbonate Radical ◽  
Influence Of Ph

scholarly journals Surface Charge governs the adsorption behaviour of glyphosate in Australian Oxisol Soil System

2021 ◽  
Author(s):  
Aman D. Sharma
Keyword(s):  
Surface Charge ◽  
Environmental Fate ◽  
Adsorption Behaviour ◽  
Soil System ◽  
Potentiometric Titrations ◽  
Batch Sorption ◽  
Soil Systems ◽  
The University ◽  
Sydney Australia

Abstract Glyphosate adsorption pattern is important for determining its environmental fate. Oxisol soil systems adsorb maximum glyphosate in the presence of biochar, however, the mechanism was not known. This article provides information concerning the role of surface charge in the case of Oxisol soil systems. Batch sorption experiments were conducted at the University of Sydney, Australia. Potentiometric titrations were done to calculate the surface charge in the case of Oxisol soil systems. Maximum adsorption of glyphosate in the Oxisol soil systems in the presence of char was due to an increase in net positive surface charge. This finding is of great importance to understanding the mechanism of herbicide soil interactions.

scholarly journals Surface Charge governs the adsorption behaviour of glyphosate in Australian Oxisol Soil System

2021 ◽  
Author(s):  
Aman D. Sharma
Keyword(s):  
Surface Charge ◽  
Environmental Fate ◽  
Adsorption Behaviour ◽  
Soil System ◽  
Potentiometric Titrations ◽  
Batch Sorption ◽  
Soil Systems ◽  
The University ◽  
Sydney Australia

Abstract Glyphosate adsorption pattern is important for determining its environmental fate. Oxisol soil systems adsorb maximum glyphosate in the presence of biochar, however, the mechanism was not known. This article provides information concerning the role of surface charge in the case of Oxisol soil systems. Batch sorption experiments were conducted at the University of Sydney, Australia. Potentiometric titrations were done to calculate the surface charge in the case of Oxisol soil systems. Maximum adsorption of glyphosate in the Oxisol soil systems in the presence of char was due to an increase in net positive surface charge. This finding is of great importance to understanding the mechanism of herbicide soil interactions.

The effect of irradiance and temperature on the role of photolysis in the removal of organic micropollutants under Antarctic conditions

2013 ◽  
Vol 10 (5) ◽  
pp. 417 ◽  
Author(s):  
Philipp Emnet ◽  
Rai S. Kookana ◽  
Ali Shareef ◽  
Sally Gaw ◽  
Mike Williams ◽  
...  
Keyword(s):  
Environmental Fate ◽  
Limit Of Detection ◽  
Ice Cover ◽  
Degradation Pathway ◽  
Organic Micropollutants ◽  
Abstract Knowledge ◽  
Photolytic Degradation ◽  
Untreated Sewage ◽  
The Antarctic

Environmental context Antarctica has several scientific research stations located along its coast, where they discharge often untreated sewage containing organic micropollutants. Although degradation of these pollutants by microorganisms is limited by the cold conditions, other pathways such as photodegradation may be significant. Our results indicate that, during the summer, photolysis is a potentially significant degradation pathway for organic micropollutants in Antarctic surface waters, although the rate of loss would depend on ice cover and water depth. Abstract Knowledge of the environmental fate of organic micropollutants in Antarctica is limited, especially with respect to photolysis. The Antarctic is characterised by extreme light conditions of either continuous sunshine or darkness depending on the season. The photolytic degradation of benzophenone-3 (BP-3), bisphenol A (BPA), 17α-ethinylestradiol (EE2), methyl paraben (mParaben), 4-t-octylphenol (4-t-OP) and triclosan in MilliQ and seawater was investigated over a range of irradiance levels and temperatures. Photodegradation was compound specific. Up to 20% of BPA, BP-3 and EE2 was degraded over a 7-h irradiance period. Triclosan and 4-t-OP degraded to below the limit of detection in all experiments whereas mParaben was not degraded. The degradation of triclosan increased with irradiance in both MilliQ (P=2.2×10–16) and seawater (P=2.2×10–16). The degradation of 4-t-OP increased with irradiance in MilliQ (P=8.5×10–9) and seawater (P=1.1×10–5), and with temperature in MilliQ (P=8.5×10–9) and seawater (P=1.0×10–5). Similar relationships could not be established for BPA, BP-3, EE2 and mParaben due to the limited extent of degradation observed. The photolysis of triclosan was enhanced 4-fold in seawater compared to MilliQ water. Results from this study indicate that micropollutants may persist for extended periods of time in Antarctic coastal waters, particularly with ice cover, above and beyond that exhibited in temperate seawater.

Environmental fate of ceftiofur sodium, a cephalosporin antibiotic. Role of animal excreta in its decomposition

1990 ◽  
Vol 38 (3) ◽  
pp. 890-894 ◽  
Author(s):  
Terry J. Gilbertson ◽  
Rex E. Hornish ◽  
Prem S. Jaglan ◽  
K. Thomas Koshy ◽  
John L. Nappier ◽  
...  
Keyword(s):  
Environmental Fate ◽  
Animal Excreta ◽  
Cephalosporin Antibiotic ◽  
Ceftiofur Sodium
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