The growing global demand for meat consumption, especially for poultry, has led to an increase in bone waste production that necessitates sustainable waste management strategies. This study proposes a new processing method for Chicken Bone Waste (CBW) and evaluates the reactant’s potential usage. The novel approach to this issue consists of the integration of an enzymatic pretreatment to CBW before being subjected to the pyrolysis process. First, the CBW were classically processed (CBW classic) and then underwent a novel enzymatic pretreatment that consisted of a mixture of protease, lipase, and amylase (CBW enzymes). The pretreated CBW were slowly pyrolyzed (10 °C/min) at temperatures between 500–900 °C. The increase in temperature led to a decrease in biochar yield of 45 ± 3 wt%. In addition, the biochar thermal stability increased with the augmentation of process temperature. The pyro-gas primary consists of CO2 and ≥ C2, CO, CH4, and H2. Higher process temperatures enhanced the production of ≥ C2 and H2. The maximum oil yields were 45.3 wt% (600 °C, CBW classic) and 38.5 wt% (500 °C, CBW enzymes). The bio-oil obtained from CBW enzymes at 600 °C exhibits higher yielding valuable compounds. Chemicals identified in the main groups can be used as scaffolds for plant protection products, waxes and polishes, fireproofing, textiles, rubber, jet fuel, biodiesel, etc. The study concludes that the novel integrated processing enhances the potential functionalities of pyrolysis products by producing green, renewable chemicals and resources.

中文翻译：

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使用酶预处理和缓慢热解对鸡骨废料进行新的综合加工，以生产绿色化学品


全球对肉类消费的需求不断增长，尤其是家禽，导致骨废料产生的增加，这需要可持续的废物管理策略。本研究提出了一种新的鸡骨废料 （CBW） 处理方法，并评估了该反应物的潜在用途。解决这个问题的新方法包括在进行热解过程之前将酶预处理整合到 CBW 中。首先，CBW 经过经典加工（CBW 经典），然后进行一种新型酶预处理，由蛋白酶、脂肪酶和淀粉酶（CBW 酶）的混合物组成。将预处理的 CBW 在 500–900 °C 的温度下缓慢热解 （10 °C/min）。 温度升高导致生物炭产量下降 45 ± 3 wt%。此外，生物炭的热稳定性随着工艺温度的增加而增加。热释气初级由 CO2 和 ≥ C2、CO、CH4 和 H2 组成。较高的工艺温度促进了 ≥ C2 和 H2 的产生。最大产油率为 45.3 wt%（600 °C，CBW 经典）和 38.5 wt%（500 °C，CBW 酶）。在 600 °C 下从 CBW 酶获得的生物油表现出更高产量的有价值的化合物。在主要组中确定的化学品可用作植物保护产品、蜡和抛光剂、防火、纺织品、橡胶、喷气燃料、生物柴油等的支架。该研究得出的结论是，这种新颖的集成加工通过生产绿色、可再生的化学品和资源来增强热解产品的潜在功能。