| Autor: |
Chatterjee, Sayan, Purty, Ram Singh, Asrani, Dishali, Kumar, Prashant, Panda, Swapna Rekha, Asthana, Sudeep |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2024, Vol. 2986 Issue 1, p1-5, 5p |
| Abstrakt: |
Water is a vital resource and one of the major causes of existence of life on earth. There has been no sustainable re-use of this resource and we are on the verge of running out of this resource in no time. The removal of metals and other potential contaminants from used water for reuse needs a validated large-scale cost-effective method. The development of a novel biofilter was aimed in this project with the bio-sorbant as spent tea leaves. The various parameters of the biofiltration processes, their mechanism for heavy metals removal along with the efficiency of the biofilters and its scale up aspects have been studied. The work was targeted towards removal of Nickel (Ni) and Cadmium (Cd), two very common contaminant in urban and rural ground water as well as in industrial spent waters. In a proof-of-concept study, a laboratory-scale closed biofilter system employing the trickle bed process was operated to remove Nickel (Ni) and Cadmium (Cd) from a synthetic waste water sample at a load of 1000 mg/L of the heavy metal. Spent tea leaves after proper pre-treatment was used as filter media. Depth profile analysis of the filter bed showed the reduction of a steep gradient of Nickel (Ni) and Cadmium (Cd) from the top layer to the bottom layer of filter media in the biofilter. Nickel (Ni) and Cadmium (Cd) level at the bottom of the biofilter decreased over 78% over a period of 6-8 hours of experiment. With these observations we have scaled up the process from a 0.050 L to 15.0 L operating volume. The results were comparable in the scaled up set up. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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