AI Article Synopsis
- The study examined how hydrodynamic cavitation (HC) impacts the biodegradability of herbal waste in municipal wastewater that had undergone mechanical pre-treatment.
- HC was conducted at an optimal inlet pressure of 3.5 bar, resulting in a significant 70% increase in the BOD/COD ratio within the first 10 minutes, indicating improved biodegradability.
- Analytical techniques like fiber component analysis, FT-IR/ATR, TGA, and SEM confirmed that HC altered the chemical and structural characteristics of herbal waste, reducing components like hemicellulose, cellulose, and lignin without creating harmful by-products for further biological treatment.
Article Abstract
The effect of hydrodynamic cavitation (HC) and the manner it affects the biodegradability of herbal waste suspended on municipal wastewater subjected to mechanical pre-treatment was examined in this paper. The HC was performed at an optimal inlet pressure equal to 3.5 bar and with the cavitation number of 0.11; the number of recirculation passes through the cavitation zone amounted to 30.5. The BOD/COD ratio was enhanced by more than 70% between the 5th and 10th minute of the process, indicating the enhanced biodegradability of herbal waste shortly. Fiber component analysis, FT-IR/ATR, TGA and SEM analysis were conducted to check the findings and to demonstrate changes in the chemical and morphological structure of herbal waste. It confirmed that hydrodynamic cavitation visibly influenced the herbal composition and their structural morphology, decreased hemicellulose, cellulose and lignin content, but did not form the by-products affecting the subsequent biological treatment of herbal waste.
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| http://dx.doi.org/10.1016/j.biortech.2023.128932 | DOI Listing |
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