尿素浸渍预处理玉米秸秆进行热解制备含氮生物油和氮掺杂生物炭。
Urea impregnation into fungus pretreated corn stover to perform pyrolysis for production of nitrogen-containing bio-oil and nitrogen-doped biochar.
机构信息
School of Life Science and Food Engineering, Jiangsu Provincial Engineering Laboratory for Biomass Conversion and Process Integration, Huaiyin Institute of Technology, Huai'an 223003, China.
School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China.
出版信息
Bioresour Technol. 2023 May;376:128921. doi: 10.1016/j.biortech.2023.128921. Epub 2023 Mar 18.
Urea was introduced into the fungal pretreated corn stover and then the urea soaked materials were subjected to pyrolysis for the production of nitrogen-containing bio-oil and nitrogen-doped biochar. The urea soaking effectively realized the enrichment of nitrogen-containing compounds in the bio-oil and the maximal content of the nitrogen-containing compounds in bio-oils reached up to 66.32% under 4 wt% urea concentration. Among the nitrogen-containing compounds, amines were the most dominant component with the maximal content of 41.17%. The higher urea concentration is beneficial to make more nitrogen be fixed in the biochar. The nitrogen content of the biochar reached up to 12.86 wt% under 8 wt% urea concentration. Nitrogen on the biochar surface existed in the form of pyrrolic-N, pyridinic-N and graphite-N. In conclusion, urea simple soak on fungus pretreated biomass to perform pyrolysis is a promising approach to obtain high value-added nitrogen-containing chemicals and nitrogen-doped biochar with high nitrogen content.
尿素被引入真菌预处理过的玉米秸秆中，然后将尿素浸泡过的材料进行热解，以生产含氮生物油和氮掺杂生物炭。尿素浸泡可以有效地实现含氮化合物在生物油中的富集，在 4wt%尿素浓度下，含氮化合物的最大含量达到 66.32%。在含氮化合物中，胺类是最主要的成分，最大含量为 41.17%。较高的尿素浓度有利于将更多的氮固定在生物炭中。在 8wt%尿素浓度下，生物炭的氮含量达到 12.86wt%。生物炭表面的氮以吡咯氮、吡啶氮和石墨氮的形式存在。总之，在真菌预处理的生物质上简单地用尿素浸泡进行热解是一种很有前途的方法，可以获得高附加值的含氮化学品和高氮含量的氮掺杂生物炭。
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