Preparation and properties of hydrochars from macadamia nut shell via hydrothermal carbonization.
Preparation and properties of hydrochars from macadamia nut shell via hydrothermal carbonization.
复制标题
DOI：
10.1098/rsos.181126
复制
发表时间：
2018-10
影响因子：
3.5
通讯作者：
Kan H
中科院分区：
文献类型：
--
作者：
Fan F;Yang Z;Li H;Shi Z;Kan H
澳洲坚果壳（Macadamia nut shell，MNS）是澳洲坚果生产过程中产生的一种废弃木质纤维素。大量的MNS废弃物造成了严重的资源浪费和环境污染。因此，以MNS为原料，采用水热碳化法制备氢焦具有重要意义。进行MNS的HTC以研究工艺参数，包括HTC温度（180-260°C）和停留时间（60-180 min）对氢焦性质的影响。结果表明，随着HTC温度和停留时间的增加，加氢半焦的质量产率降低，高温热值增加。此外，氢焦的C含量增加，而H和O含量降低。在260°C的温度和120 min的时间下，水热炭的质量产率为46.59%，能量产率为64.55%，较高的热值为26.02 MJ kg−1。通过扫描电子显微镜观察，水热炭的表面结构与MNS相比更粗糙。通过傅里叶变换红外光谱分析了MNS和氢焦的化学和燃烧行为，热重分析表明，脱羧和脱水反应是HTC过程中的主要途径。结果表明，HTC能促进MNS向固体燃料的转化。
Macadamia nut shell (MNS) is a type of waste lignocellulose obtained from macadamia nut production processing. Large MNS wastes caused serious resource waste and environmental pollution. So, preparation of hydrochars from MNS via hydrothermal carbonization (HTC) is of great significance. HTC of MNS was conducted to study the effect of process parameters, including HTC temperature (180–260°C) and residence time (60–180 min) on the properties of hydrochars. Results showed that the increase in HTC temperature and residence time decreased the mass yield of hydrochars and increased the high heating value of hydrochars. Furthermore, the C content of hydrochars increased, whereas the H and O contents decreased. Mass yield of hydrochar is 46.59%, energy yield is 64.55% and the higher heating value is 26.02 MJ kg−1 at a temperature of 260°C and time of 120 min. The surface structure of hydrochars was rougher compared with that of MNS as observed via scanning electron microscopy. The chemical and combustion behaviour of MNS and hydrochars was analysed by Fourier transform infrared spectroscopy, and thermogravimetric analysis indicated that decarboxylation and dehydration reactions were the predominant pathways during the HTC process. Results showed that HTC can facilitate the transformation of MNS into solid fuel.
登录
查看更多内容
影响因子：
9
作者：
Gao, Pin;Zhou, Yiyuan;Xue, Gang
通讯作者：
Xue, Gang
影响因子：
8.1
作者：
Lu, Xiaowei;Jordan, Beth;Berge, Nicole D.
通讯作者：
Berge, Nicole D.
影响因子：
11.2
作者：
Kambo, Harpreet Singh;Dutta, Animesh
通讯作者：
Dutta, Animesh
不同热化学工艺废油茶壳生物炭的制备及表征
影响因子：
5.3
作者：
Fan, Fangyu;Zheng, Yunwu;Zheng, Zhifeng
通讯作者：
Zheng, Zhifeng
影响因子：
10.4
作者：
Ko, Kwang-Hyun;Rawal, Aditya;Sahajwalla, Veena
通讯作者：
Sahajwalla, Veena