scholarly journals Temperature-dependent mechanisms of DOM removal by biological activated carbon filters

2019 ◽  
Vol 5 (12) ◽  
pp. 2232-2241
Author(s):  
Nashita Moona ◽  
Urban J. Wünsch ◽  
Mia Bondelind ◽  
Olof Bergstedt ◽  
Tugba Sapmaz ◽  
...  
Keyword(s):  
Organic Matter ◽  
Activated Carbon ◽  
Microbial Activity ◽  
Active Carbon ◽  
Chemical Adsorption ◽  
Temperature Dependent ◽  
Biological Activated Carbon ◽  
Removal Mechanisms ◽  
Organic Matter Fractions ◽  
Physical And Chemical

Physical and chemical adsorption by aged biological active carbon (BAC) filters were observed for some organic matter fractions, and may represent important removal mechanisms during periods of low microbial activity.

scholarly journals The Study of the Physical and Chemical Behavior of Activated Carbon in the Permeable Concrete for Light Traffic Paving

2019 ◽  
Vol 7 (9) ◽  
pp. 175-192
Author(s):  
Ednei Bruce Da Silva ◽  
Antônio Estanislau Sanches ◽  
David Barbosa de Alencar ◽  
Mike Jordan Braz Izel ◽  
Camily Murrieta Vasconcelos Oliveira Bezerra ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Fine Aggregate ◽  
Light Traffic ◽  
Conventional Concrete ◽  
Biological Activated Carbon ◽  
Treatment Processes ◽  
Basic Sanitation ◽  
Slow Filtration ◽  
Physical And Chemical

The water treatment processes in which microorganisms act are margin filtration, slow filtration and biological activated carbon (CAB) [2]. For this research, a study of permeable concrete with the addition of 2% activated carbon for light traffic paving was performed. The objective of this research is to identify the feasibility of using this concrete so that filtered water can reach at least the basic sanitation networks, with a better quality to be treated. For this, characterizations of the quality of the concrete component materials were made with a novelty, using the fine aggregate (sand). After the characterizations, the permeable concrete traces with mechanical strength of 30MPa were made. Dosing analyzes followed with molding, curing and rupture of concrete specimens. The results of the arithmetic mean of the axial compression of conventional concrete at 28 days were 34.2 MPa and the concrete with the addition of activated carbon was 32.2 MPa, reaching the expectations of strength. Complementary experiments were performed for the quality of the water filtered by the CP's, the pH, the alkalinity and the chlorine content were analyzed. The pH of the conventional concrete found was 7.6 and the concrete with the addition of activated carbon was between 7.2 and 6.8, which may be the best result found

Importance of the order in enhancing EfOM removal by combination of BAC and MIEX®

2011 ◽  
Vol 64 (11) ◽  
pp. 2325-2332 ◽  
Author(s):  
A. Aryal ◽  
A. Sathasivan
Keyword(s):  
Organic Matter ◽  
Activated Carbon ◽  
Organic Carbon ◽  
Ion Exchange ◽  
Exchange Resin ◽  
Wastewater Reuse ◽  
Ion Exchange Resin ◽  
Wastewater Effluent ◽  
Biological Activated Carbon ◽  
Magnetic Ion

Biological activated carbon (BAC) is operationally a simple treatment which can be employed to remove effluent organic matter (EfOM) from secondary wastewater effluent (SWWE). Unfortunately, BAC removes only a limited amount of dissolved organic carbon (DOC). Thus, maximizing DOC removal from SWWE using BAC is a major concern in wastewater reuse. This study has investigated a hybrid system of BAC and Magnetic Ion Exchange Resin (MIEX®) for the enhanced removal of DOC. Performance of both BAC prior to MIEX® (BAC/MIEX®) and reverse (MIEX®/BAC) combination was evaluated in terms of DOC removal. The BAC/MIEX® showed much better DOC removal. This is because microbial activity in the BAC bed converted MIEX® non-amenable DOC to MIEX® amenable DOC. As a result, BAC/MIEX® combination synergised DOC removal. In addition, BAC was also found to be highly effective in reducing MIEX® dose for a given DOC removal from SWWE.

Microbial activity in biological activated carbon bed by pulse responses

1996 ◽  
Vol 34 (5-6) ◽  
pp. 213-222 ◽  
Author(s):  
Akiyoshi Sakoda ◽  
Jianzhong Wang ◽  
Motoyuki Suzuki
Keyword(s):  
Activated Carbon ◽  
Microbial Activity ◽  
Empirical Relationship ◽  
Pond Water ◽  
Biological Activated Carbon ◽  
Dissolved Organics ◽  
Degradation Rates ◽  
One Year ◽  
The Moment ◽  
Micro Organisms

The moment analysis of pulse responses was applied to the biological activated carbon (BAC) in order to elucidate its microbial activity and adsorption capacity separately. The microbial activity derived from this approach was focussed on and the following was found in this work. First, the activity of micro-organisms attached on activated carbon was higher than those on other carriers. Second, the microbial activities of bench-scale BACs treating pond water varied with the pretreatments by ozone and chlorine, but did not change considerably during the operation for about one year. Also, an the empirical relationship was found between the microbial degradation rates of pulse-injected glucose and background dissolved organics. It was concluded that this approach is useful for evaluating the microbial activity in BAC in a relatively easy manner.

scholarly journals Short-term dynamics of soil organic matter fractions and microbial activity in smallholder potato-legume intercropping systems

2019 ◽  
Vol 142 ◽  
pp. 123-135 ◽  
Author(s):  
Shadrack O. Nyawade ◽  
Nancy N. Karanja ◽  
Charles K.K. Gachene ◽  
Harun I. Gitari ◽  
Elmar Schulte-Geldermann ◽  
...  
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Microbial Activity ◽  
Short Term ◽  
Soil Organic Matter Fractions ◽  
Organic Matter Fractions

Characterisation of dissolved organic matter to optimise powdered activated carbon and clarification removal efficiency

2020 ◽  
Vol 6 (8) ◽  
pp. 2065-2077
Author(s):  
Y. Shutova ◽  
N. R. H. Rao ◽  
A. Zamyadi ◽  
A. Baker ◽  
J. Bridgeman ◽  
...  
Keyword(s):  
Organic Matter ◽  
Activated Carbon ◽  
Dissolved Organic Matter ◽  
Removal Efficiency ◽  
Powdered Activated Carbon ◽  
Treatment Processes ◽  
Organic Matter Fractions ◽  
P Removal

Removal of dissolved organic matter fractions via three different treatment processes.

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