scholarly journals The Performance of Coconut Shell-based Activated Carbon (CSAC) in Treating Drinking Water

2013 ◽  
Vol 4 (3) ◽  
pp. 11-16 ◽  
Author(s):  
W. Chali ◽  
I. Yakub
Keyword(s):  
Drinking Water ◽  
Activated Carbon ◽  
Water Treatment ◽  
Lower Cost ◽  
Metal Removal ◽  
Tap Water ◽  
Drinking Water Treatment ◽  
Aesthetic Value ◽  
Market Growth ◽  
Inorganic Adsorbents

The demand and market growth of activated carbon (AC) in drinking water treatment have been increasing over the recent years. This is because of the better properties and relatively lower cost of AC compared to inorganic adsorbents like ceramics. However, there have been limited studies on the effects of AC preparation including type of cleansing agent on the adsorption of metal and the turbidity of treated tap water. Therefore, this research investigated the effect of types of cleansing agent and sorbent dosage on turbidity reduction and metal removal in drinking water treatment. The analysis showed that 200 g dosage of AC that has been cleansed with FeCl3 has the turbidity and metal removal improved the most. For aesthetic value of drinking water though, filtration by using AC cleansed with KOH gave better taste and increasing the sorbent dosage up to 300 g increased this performance.

scholarly journals Fluidisation characteristics of granular activated carbon in drinking water treatment applications

2021 ◽  
Author(s):  
O.J.I. Kramer ◽  
C. van Schaik ◽  
P.D.R. Dacomba-Torres ◽  
P.J. de Moel ◽  
E.S. Boek ◽  
...  
Keyword(s):  
Drinking Water ◽  
Activated Carbon ◽  
Water Treatment ◽  
Drinking Water Treatment ◽  
Granular Activated Carbon

Use of a stable carbon isotope to assess the efficiency of a drinking water treatment method with CO2

2012 ◽  
Vol 65 (6) ◽  
pp. 983-988 ◽  
Author(s):  
M. Poberžnik ◽  
A. Leis ◽  
A. Lobnik
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Dissolved Inorganic Carbon ◽  
Tap Water ◽  
Stable Carbon Isotope ◽  
Research Work ◽  
Drinking Water Treatment ◽  
Treatment Method ◽  
Water Supply Systems ◽  
Co2 Gas

CO2 gas with a special isotopic signature (δ13C = −35.2‰ vs. VPDB) was used as a marker to evaluate the efficiency of a drinking water treatment method and the effect of an ultrasonic (US) stirrer. This treatment was developed to prevent precipitation and corrosion effects in water–supply systems. The research work was performed using a laboratory-scale pilot plant that was filled with tap water. The stable isotope analyses of δ13C-DIC (Dissolved Inorganic Carbon) in the water samples indicated that the maximum content of added CO2 gas in DIC was in the range of 35 to 45%. The use of the US stirrer during the entire experiment decreased the method's overall efficiency by 10%, due to degassing at a late stage of the experiment but accelerated the dissolution process in the early experimental stage.

scholarly journals Pesticide removals in the nitrifying expanded-bed filter at drinking water treatment plant

2020 ◽  
Vol 15 (1) ◽  
pp. 1-13
Author(s):  
Nguyet Thi-Minh Dao ◽  
The-Anh Nguyen ◽  
Viet-Anh Nguyen ◽  
Mitsuharu Terashima ◽  
Hidenari Yasui
Keyword(s):  
Drinking Water ◽  
Activated Carbon ◽  
Water Treatment ◽  
Treatment Plant ◽  
Drinking Water Treatment ◽  
Cost Effective ◽  
Water Treatment Plant ◽  
Field Analysis ◽  
Expanded Bed ◽  
Biological Activated Carbon

The occurrence of pesticides even at low concentrations in drinking water sources might induce potential risks to public health. This study aimed to investigate the removal mechanisms of eight pesticides by the nitrifying expanded-bed filter using biological activated carbon media at the pretreatment of a drinking water plant. The field analysis demonstrated that four pesticides Flutolanil, Buprofezin, Chlorpyrifos, and Fenobucard, were removed at 82%, 55%, 54%, and 52% respectively, while others were not significantly removed. Under controlled laboratory conditions with continuous and batch experiments, the adsorption onto the biological activated carbon media was demonstrated to be the main removal pathway of the pesticides. The contribution of microorganisms to the pesticide removals was rather limited. The pesticide removals observed in the field reactor was speculated to be the adsorption on the suspended solids presented in the influent water. The obtained results highlighted the need to apply a more efficient and cost-effective technology to remove the pesticide in the drinking water treatment process. Keywords: biological activated carbon; drinking water treatment; nitrifying expanded-bed filter; pesticide removal.

Pilot-scale UV/H2O2-BAC process for drinking water treatment – Analysis and comparison of different activated carbon columns

2020 ◽  
Vol 382 ◽  
pp. 123044 ◽  
Author(s):  
Zhenqi Du ◽  
Ruibao Jia ◽  
Congcong Li ◽  
Pengwei Cui ◽  
Wuchang Song ◽  
...  
Keyword(s):  
Drinking Water ◽  
Activated Carbon ◽  
Water Treatment ◽  
Drinking Water Treatment ◽  
Pilot Scale ◽  
Treatment Analysis
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