Roshni Bajaj, Kuntal Sagra, Jiwan Singh*
Department of Environmental Science, Babasaheb Bhimrao Ambedkar University, Lucknow-226025, India
Cite this article: Bajaj, R., Sagara, K., Singh, J., 2025. Evaluating the role of pile geometric dimensions on the efficiency and maturity of agitated pile composting of aquatic weeds.J. Appl. Sci. Innov. Technol. 4 (2), 86-93.
Abstract:
This study evaluates the impact of pile geometric dimensions (length × width × height) on the efficiency and maturity of agitated pile composting of invasive weeds, specifically water hyacinth (Eichhorniacrassipes) and alligator weed (Alternantheraphiloxeroides). Three trapezoidal compost piles with varying base and length but uniform height (0.35 m) were constructed and monitored over a 30-day composting period. Regular turning ensured adequate aeration and uniform decomposition. Temperature profiles indicated rapid microbial activity with pile 3 reaching the highest temperature over a 30-day composting period. Regular turning ensured adequate aeration and uniform decomposition of organic wastes. Temperature profiles of all trials indicated rapid microbial activity however temperature of pile 3 was reached the highest (50°C) on 5th Day of composting. Physio-chemical analysis of compost samples revealed that pH was found neural, significant moisture reduction, and decrease in volatile solids, which represent stabilization of organic matter. Nutrient concentration (Na, K, Ca, available phosphorous and total nitrogen) increased across all piles, reflecting nutrient enrichment. Fourier Transform Infrared (FTIR) spectroscopy confirmed substantial organic matter transformation and maturity. Among the piles, Pile 1, with optimized geometric configuration, demonstrated superior chemical stability and maturity, indicating enhanced compost quality. These results highlight the critical role of pile geometry in optimizing agitated pile composting performance for aquatic weed biomass valorisation.
Keywords: Agitated pile composting; Pile geometry optimization; Eichhorniacrassipes; Alternantheraphiloxeroides; FTIR spectroscopy; Nutrient enrichment
Scope: Environmental Science & Technology
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