This paper aims to examine the influence of biochar produced from lawn waste in accelerating the degradation and mineralization rates of food waste compost. Biochar produced at two different temperatures (350 and 450 °C) was applied at the rates 10 and 15% (w/w) of the total waste to an in-vessel compost bioreactor for evaluating its effects on food waste compost. The quality of compost was assessed against stabilization indices such as moisture contents (MC), electrical conductivity (EC), organic matters (OM) degradation, change in total carbon (TC) and mineral nitrogen contents such as ammonium (NH₄⁺) and nitrate (NO₃⁻). The use of biochar significantly improved the composting process and physiochemical properties of the final compost. Results showed that in comparison to control trial, biochar amended compost mixtures rapidly achieved the thermophilic temperature, increased the OM degradation by 14.4–15.3%, concentration of NH₄⁺ by 37.8–45.6% and NO₃⁻ by 50–62%. The most prominent effects in term of achieving rapid thermophilic temperature and a higher concentration of NH₄⁺ and NO₃⁻ were observed at 15% (w/w) biochar. According to compost quality standard of United States (US), California, Germany, and Austria, the compost stability as a result of biochar addition was achieved in 50–60 days. Nonetheless, the biochar produced at 450 °C had similar effects as to biochar produced at 350 °C for most of the compost parameters. Therefore, it is recommended to produce biochar at 350 °C to reduce the energy requirements for resource recovery of biomass and should be added at a concentration of 15% (w/w) to the compost bioreactor for achieving a stable compost.

本文旨在研究草坪废料产生的生物炭对加速餐厨垃圾堆肥的降解和矿化速率的影响。将在两种不同温度（350和450°C）下产生的生物炭以总废物的10％和15％（w / w）的比例施用于船上堆肥生物反应器，以评估其对食物垃圾堆肥的影响。根据诸如水分含量（MC），电导率（EC），有机物（OM）降解，总碳（TC）和矿物质氮含量（如铵（NH ₄ ⁺）和硝酸盐（NO ₃ ^-）。生物炭的使用显着改善了最终堆肥的堆肥过程和理化特性。结果表明，相比于对照试验中，生物炭修正快速地实现所述嗜热温度堆肥的混合物，由14.4-15.3％，NH的浓度的增加而OM降解₄ ⁺由37.8-45.6％和NO ₃ ^-由50-62％。在实现快速嗜热温度和NH的更高浓度的术语最突出的效果₄ ⁺和NO ₃ ^-观察到生物炭含量为15％（w / w）。根据美国（美国），加利福尼亚，德国和奥地利的堆肥质量标准，由于添加了生物炭而导致的堆肥稳定性在50至60天内就达到了。尽管如此，对于大多数堆肥参数而言，在450°C下产生的生物炭与在350°C下产生的生物炭具有相似的作用。因此，建议在350°C下生产生物炭，以减少回收生物质资源所需的能量，应将其以15％（w / w）的浓度添加到堆肥生物反应器中，以实现稳定的堆肥。