The effect of biochar prepared at different pyrolysis temperatures on microbially driven conversion and retention of nitrogen during composting.

Heliyon

Soil Science and Plant Nutrition, UWA School of Agriculture and Environment, The University of Western Australia, 35 Stirling Highway, Perth, WA, 6009, Australia.

Published: March 2023

Aerobic composting is one of the most economical ways to produce organic fertilizer from agricultural wastes. In this research, we independently developed a simple composting simulation reactor. The effects of biochar pyrolysised at different pyrolysis temperatures (B1-450 °C; B2-550 °C; and B3-650 °C) on nitrogen conversion (Total nitrogen (TN), ammonium nitrogen (NH -N), nitrate nitrogen (NO -N), cumulative amount of ammonia (CEA) and nitrous oxide (CEN) emission, nitrogen loss rate (NLR), etc.) and functional microbial community (, and ) structure in the composting system were studied. Results showed that the addition of biochar significantly improved the efficiency of composting, increased the NO -N concentration and reduced the NLR (%) in the composting system (B3 (31.4 ± 2.73)

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9976328PMC
http://dx.doi.org/10.1016/j.heliyon.2023.e13698DOI Listing

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