| Autor: |
Pottipati, Suryateja, Haq, Izharul, Kalamdhad, Ajay S. |
| Zdroj: |
Biomass Conversion & Biorefinery; Aug2024, Vol. 14 Issue 16, p19581-19595, 15p |
| Abstrakt: |
Vegetable market wastes mixed with the solid waste of cities are significant sources of pollution in India due to their pungent stench and greenhouse gas emissions. The present study assessed the efficacy of optimized biodegradation practice using a large-scale rotary drum composter (5000 L) and a vermicomposter (3000 L) in managing humongous organic waste generated in market areas. The rotary drum reactor was initially commissioned with cow manure before being subjected to a mixture of vegetable waste and dry leaves for 3 months (250 kg/day). The maximum temperatures at the inlet and outlet of the rotary drum were observed to be 78 °C and 45 °C, respectively, providing unequivocal evidence that the reactor developed thermophilic conditions with a 7-day waste retention. The outlet material was then exposed to vermicomposting using Eisenia fetida for just 20 days, which considerably increased the nitrogen content to 4.2%. In addition, the final product was determined to be non-toxic with an SGI% of 98%. Bacterial diversity was studied (16S rRNA) for microbial identification and was found to vary throughout biodegradation. The results indicate that Bacteroidetes, Bacilli, and Proteobacteria dominated the process. Seventy percent of the volume had been lost in 27 days, and the final product was stable and safe for the soil. Thus, optimized biodegradation on a large scale could be a more advanced way for cities to deal with their organic waste. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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