Use of fecal and sawdust biochar as a new perfume delivery system,Flavour and Fragrance Journal

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Use of fecal and sawdust biochar as a new perfume delivery system
Flavour and Fragrance Journal ( IF 2.1 ) Pub Date : 2017-09-25 , DOI: 10.1002/ffj.3413
Christian Starkenmann ₁ , Yvan Niclass ₁ , Pascal Beaussoubre ₁ , Janina Zimmermann ₁ , Isabelle Cayeux ₁ , Charles Jean-François Chappuis ₁ , Wolfgang Fieber ₁

Affiliation

Human fecal matter mixed with pine sawdust was heated at 200, 300, 400, 500, 600, or 650°C in the absence of oxygen to generate black solid residues called biochars. These biochars were subsequently evaluated as a perfume delivery system for air care. The performance of biochar was compared to that of cellulosic material, which is commonly used for the release of perfume into the air, and to that of active charcoal, which is used for air purification. A perfume model system consisting of alcohols, aldehydes, alkanes, and terpenes was loaded onto these solid materials. Results showed that the cellulosic material had a good release profile, but that the aldehydes oxidized to some extent, which generates a rancid smell if no antioxidant is added. On the other hand, active charcoal strongly absorbed all volatiles such that no perfume release occurred and no smell was perceived. The biochar heated at 200°C showed good release performance (long lasting) but some fecal off‐notes remained in the background. Biochar prepared at 300°C was the best material as a compromise between the release profile and the energy needed to produce the material. The goal of this work was to add value to biochar and in so doing empower toilet innovators, aid the circular economy, and propose a sustainable solution for malodor control.

中文翻译：

使用粪便和锯末生物炭作为新的香水输送系统

将人类粪便和松木屑混合，在无氧的情况下于200、300、400、500、600或650°C加热，生成黑色固体残渣，称为生物炭。这些生物炭随后被评估为用于空气护理的香水输送系统。将生物炭的性能与通常用于将香料释放到空气中的纤维素材料的性能以及用于空气净化的活性炭的性能进行了比较。将由醇，醛，烷烃和萜烯组成的香料模型系统加载到这些固体材料上。结果表明，纤维素材料具有良好的释放特性，但是醛类被氧化到一定程度，如果不添加抗氧化剂，则会产生腐臭味。另一方面，活性炭强烈吸收了所有挥发物，因此没有香气释放，也没有气味。加热到200°C的生物炭显示出良好的释放性能（持续时间长），但背景中仍留有一些粪便的异味。在300°C下制备的生物炭是最好的材料，因为它是释放曲线与生产该材料所需的能量之间的折衷。这项工作的目的是增加生物炭的价值，从而增强厕所创新者的能力，帮助循环经济，并为臭味控制提供可持续的解决方案。

更新日期：2017-09-25

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