DOM removal from surface water by activated carbon<i>vs.</i>a nanocomposite: an experimental and modeling approach to optimize treatment

Kummel, Mario L; Shabtai, Itamar; Nir, Shlomo; Mishael, Yael G.

doi:10.1039/d3ew00010a

Cited by 2 publications

(2 citation statements)

References 65 publications

(86 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Here, we present calculations of a simulation of the results in [44]. In the absence of data on toxin removal in the presence of azide, as in Section 3, we estimated the parameters R 0 , C 1 , and D 1 by considering results in [42] and in Kummel et al [47], and tested whether by setting kd = 0, the calculated removal during the first 5 days is complete. The outcome of calculations without degradation is shown in Table 4.…”

Section: B Simulation Of Results In (A) and A Proposed Treatment For ...mentioning

confidence: 99%

Removal of Emerging Contaminants by Degradation during Filtration: A Review of Experimental Procedures and Modeling

Undabeytia,

Jiménez-Barrera,

Nir

2023

Water

Self Cite

View full text Add to dashboard Cite

Here, we review the efficient removal of organic micropollutants from water by degradation during filtration using specialized bacteria and enzymes. In both approaches, the filter provides essential binding sites where efficient degradation can occur. A model is presented that enables the simulation and prediction of the kinetics of filtration for a given pollutant concentration, flow rate, and filter dimensions and can facilitate the design of experiments and capacity estimates; it predicts the establishment of a steady state, during which the emerging concentrations of the pollutants remain constant. One method to remove cyanotoxins produced by Microcystis cyanobacteria, which pose a threat at concentrations above 1.0 µg L−1, is to use an activated granular carbon filter with a biofilm; this method resulted in the complete removal of the filtered toxins (5 µg L−1) during a long experiment (225 d). This system was analyzed using a model which predicted complete toxin removal when applied at a 10-fold-higher concentration. Enzymes are also used in filtration processes for the degradation of trace organic contaminants, mostly through the use of membrane bioreactors, where the enzyme is continuously introduced or maintained in the bioreactor, or it is immobilized on the membrane.

show abstract

Section: B Simulation Of Results In (A) and A Proposed Treatment For ...mentioning

confidence: 99%

Removal of Emerging Contaminants by Degradation during Filtration: A Review of Experimental Procedures and Modeling

Undabeytia,

Jiménez-Barrera,

Nir

2023

Water

Self Cite

View full text Add to dashboard Cite

show abstract

“…In case of obtaining the same UV 254 absorbance per different doses ferric coagulant (for example, <5% difference), the smaller of the two doses was considered as the OFD. Since UV 254 absorbance is a very suitable surrogate parameter to estimate organic carbon (OC) concentrations in natural water, it was selected as the main parameter for measurement [20,21]…”

Section: Batch Experimentsmentioning

confidence: 99%

Effects of Ferrate (VI) Pre-oxidation in the Coagulation Treatment of Drinking Water

Alavi,

Bidhendi,

Mehrdadi

et al. 2023

JERR

View full text Add to dashboard Cite

Although ferrate (Fe(VI)) is introduced as a feasible replacement for pre-oxidation in the treatment of drinking water, limited research is available on effects of utilizing ferrate for the treatment of drinking water sources to produce potable water. In the present study, an experimental program was conducted on the employment of ferrate in drinking water treatment; this program included batch and continuous flow tests on multiple samples of natural water from different sources. According to the batch test results, the ferrate pre-oxidation led to improved ultraviolet light-absorbing compounds (UV254) removal by subsequent coagulation in a small portion of the samples but showed no enhancement in the majority of samples. In continuous flow tests, ferrate was added to small-scale models of existing treatment plants. Compared to the case with no pre-oxidation, ferrate pre-oxidation generally enhanced UV254 absorption, finished water turbidity, and disinfection by-product formation. Therefore, ferrate can be viably used in the treatment systems of drinking water and provide a superior replacement to available oxidants by allowing for the oxidation and disinfection of inorganic materials without negative effects on downstream processes. More researches are needed to examine a more viable combination of ferrate with other methods and obtain more knowledge about the mechanisms of the known synergistic applications of ferrate.

show abstract

DOM removal from surface water by activated carbonvs.a nanocomposite: an experimental and modeling approach to optimize treatment

Abstract: Dissolved organic matter (DOM) is commonly removed from surface water by adsorption columns packed with sand (enhanced with coagulants), high-cost activated carbons, or specifically developed adsorbents. A main challenge in...

Cited by 2 publications

References 65 publications

Removal of Emerging Contaminants by Degradation during Filtration: A Review of Experimental Procedures and Modeling

Removal of Emerging Contaminants by Degradation during Filtration: A Review of Experimental Procedures and Modeling

Effects of Ferrate (VI) Pre-oxidation in the Coagulation Treatment of Drinking Water

Contact Info

Product

Resources

About