Evaluation of sediment capping with activated carbon and nonwoven fabric mat to interrupt nutrient release from lake sediments

2017 ◽  
Vol 599-600 ◽  
pp. 413-421 ◽  
Author(s):  
Bon-Wun Gu ◽  
Chang-Gu Lee ◽  
Tae-Gu Lee ◽  
Seong-Jik Park
Keyword(s):  
Activated Carbon ◽  
Lake Sediments ◽  
Nutrient Release ◽  
Nonwoven Fabric ◽  
Sediment Capping

scholarly journals Effect of temperature on capping efficiency of zeolite and activated carbon under fabric mats for interrupting nutrient release from sediments

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Seung-Hee Hong ◽  
Jae-In Lee ◽  
Chang-Gu Lee ◽  
Seong-Jik Park
Keyword(s):  
Activated Carbon ◽  
Nutrient Release ◽  
Nonwoven Fabric ◽  
Effect Of Temperature ◽  
Overlying Water ◽  
P Release ◽  
Incubation Experiments ◽  
Different Temperatures ◽  
Influence Of Temperature On ◽  
Do Concentration

Abstract We investigated the influence of temperature on the capping efficiency to interrupt the release of nutrients from lake sediments. A 3-cm layer of Zeolite (ZL) or activated carbon (AC) was placed on the contaminated sediments, and nonwoven fabric mats (NWFM) were placed on top of these capping materials. Laboratory incubation experiments were performed under three different temperatures, namely 4, 15, and 30 °C. Under the uncapped condition at 30 °C, dissolved oxygen (DO) was depleted after 30 days, while at 4 °C and 15 °C, DO was present until the end of this experiment. DO concentration in overlying water was more dependent on the temperature than capping condition. ZL/NWFM effectively blocked the release of N from the sediments, and the capping efficiencies of ZL/NWFM for NH4-N at 4, 15, and 30 °C were 98%, 96%, and 94%, respectively. For the interruption of P release, both ZL/NWFM and AC/NWFM were not effective at 4 and 15 °C. At 30 °C, however, AC/NWFM was effective, and its capping efficiencies at 30 °C for PO4-P and T-P were 74.0% and 79.9%, respectively. In summary, nutrient release from sediments was accelerated at higher temperatures, and the effect of capping was significant at high temperature.

In-situ study on nutrient release fluxes from shallow lake sediments under wind-driven waves

2016 ◽  
Vol 28 (2) ◽  
pp. 247-254 ◽  
Author(s):  
Yuan-jun Sun ◽  
Shi-qiang Lu ◽  
Wei-qing Lin ◽  
Dao-zeng Wang ◽  
Jing-yu Fan ◽  
...  
Keyword(s):  
Lake Sediments ◽  
Shallow Lake ◽  
Nutrient Release ◽  
In Situ Study

Thermal stability and decomposition of perfluoroalkyl substances on spent granular activated carbon

2020 ◽  
Author(s):  
Feng Xiao ◽  
Bin Yao ◽  
Pavankumar Challa Sasi ◽  
Svetlana Golovko ◽  
Dana Soli ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Activated Carbon ◽  
Granular Activated Carbon ◽  
Perfluoroalkyl Substances

Influence of liming on metal burdens in lake sediments

2003 ◽  
Vol 107 ◽  
pp. 1349-1351
Author(s):  
T. Wällstedt ◽  
H. Borg
Keyword(s):  
Lake Sediments

Modification of activated carbon fiber pore structure by coke deposition

2001 ◽  
Vol 11 (PR3) ◽  
pp. Pr3-279-Pr3-286
Author(s):  
X. Dabou ◽  
P. Samaras ◽  
G. P. Sakellaropoulos
Keyword(s):  
Activated Carbon ◽  
Carbon Fiber ◽  
Pore Structure ◽  
Activated Carbon Fiber ◽  
Coke Deposition

Enhancing the power generation of Rhodopseudomonas palustris-based MFC

2020 ◽  
Vol 64 (1-4) ◽  
pp. 1261-1268
Author(s):  
Shu Otani ◽  
Dang-Trang Nguyen ◽  
Kozo Taguchi
Keyword(s):  
Activated Carbon ◽  
Rhodopseudomonas Palustris ◽  
Ozone Treatment ◽  
Maximum Power Density ◽  
On Demand ◽  
Long Time ◽  
Dry Conditions ◽  
Carbon Sheet ◽  
Uv Ozone

In this study, a portable and disposable paper-based microbial fuel cell (MFC) was fabricated. The MFC was powered by Rhodopseudomonas palustris bacteria (R. palustris). An activated carbon sheet-based anode pre-loaded organic matter (starch) and R. palustris was used. By using starch in the anode, R. palustris-loaded on the anode could be preserved for a long time in dry conditions. The MFC could generate electricity on-demand activated by adding water to the anode. The activated carbon sheet anode was treated by UV-ozone treatment to remove impurities and to improve its hydrophilicity before being loaded with R. palustris. The developed MFC could generate the maximum power density of 0.9 μW/cm2 and could be preserved for long-term usage with little performance degradation (10% after four weeks).

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