Variation of total dissolved iron and its impacts during an extreme flooding event in a boreal forest catchment

2018 ◽  
Vol 125 ◽  
pp. 227-234
Author(s):  
Jia Wang ◽  
Jiunian Guan ◽  
Liu Yang ◽  
Zirui Wang ◽  
Nan Lu ◽  
...  
Keyword(s):  
Boreal Forest ◽  
Dissolved Iron ◽  
Flooding Event ◽  
Forest Catchment ◽  
Extreme Flooding ◽  
Total Dissolved Iron

scholarly journals Microbial, Physical, and Chemical Changes in Galveston Bay Following an Extreme Flooding Event, Hurricane Harvey

2020 ◽  
Vol 7 ◽  
Author(s):  
Jamie L. Steichen ◽  
Jessica M. Labonté ◽  
Rachel Windham ◽  
David Hala ◽  
Karl Kaiser ◽  
...  
Keyword(s):  
Galveston Bay ◽  
Chemical Changes ◽  
Flooding Event ◽  
Extreme Flooding ◽  
Physical And Chemical

scholarly journals Evaluating hillslope and riparian contributions to dissolved nitrogen (N) export from a boreal forest catchment

2017 ◽  
Vol 122 (2) ◽  
pp. 324-339 ◽  
Author(s):  
M. Blackburn ◽  
José L. J. Ledesma ◽  
Torgny Näsholm ◽  
Hjalmar Laudon ◽  
Ryan A. Sponseller
Keyword(s):  
Boreal Forest ◽  
Dissolved Nitrogen ◽  
Forest Catchment

scholarly journals Combining Coagulation and Electrocoagulation with UVA-LED Photo-Fenton to Improve the Efficiency and Reduce the Cost of Mature Landfill Leachate Treatment

Molecules ◽  
2021 ◽  
Vol 26 (21) ◽  
pp. 6425
Author(s):  
Javier Tejera ◽  
Daphne Hermosilla ◽  
Antonio Gascó ◽  
Carlos Negro ◽  
Ángeles Blanco
Keyword(s):  
Landfill Leachate ◽  
Treatment Cost ◽  
Great Influence ◽  
Leachate Treatment ◽  
Dissolved Iron ◽  
Pre Treatment ◽  
Cost Efficient ◽  
Mature Landfill Leachate ◽  
Electro Coagulation ◽  
Total Dissolved Iron

This study focused on the reduction of the treatment cost of mature landfill leachate (LL) by enhancing the coagulation pre-treatment before a UVA-LED photo-Fenton process. A more efficient advanced coagulation pretreatment was designed by combining conventional coagulation (CC) and electro-coagulation (EC). Regardless of the order in which the two coagulations were applied, the combination achieved more than 73% color removal, 80% COD removal, and 27% SUVA removal. However, the coagulation order had a great influence on both final pH and total dissolved iron, which were key parameters for the UVA-LED photo-Fenton post-treatment. CC (pH = 5; 2 g L−1 of FeCl36H2O) followed by EC (pH = 5; 10 mA cm−2) resulted in a pH of 6.4 and 100 mg L−1 of dissolved iron, whereas EC (pH = 4; 10 mA cm−2) followed by CC (pH = 6; 1 g L−1 FeCl36H2O) led to a final pH of 3.4 and 210 mg L−1 dissolved iron. This last combination was therefore considered better for the posterior photo-Fenton treatment. Results at the best cost-efficient [H2O2]:COD ratio of 1.063 showed a high treatment efficiency, namely the removal of 99% of the color, 89% of the COD, and 60% of the SUVA. Conductivity was reduced by 17%, and biodegradability increased to BOD5:COD = 0.40. With this proposed treatment, a final COD of only 453 mg O2 L−1 was obtained at a treatment cost of EUR 3.42 kg COD−1.

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