陈伟博士撰写的论文“Influence of Biochar Addition on Nitrogen Transformation during Copyrolysis of Algae and Lignocellulosic Biomass “被《Environmental Science & Technology》期刊录用。在此，对陈伟博士表示祝贺，希望他在未来的学习和工作中继续努力，再创佳绩，也祝流化床与生物质团队蒸蒸日上，成果多多！
Abstract
Algae are extremely promising sustainable feedstock for fuels and chemicals, while they contain high nitrogen content, which may cause some serious nitrogen emission during algae pyrolysis utilization. In this study, we proposed a feasible method to control the nitrogen emission during algae pyrolysis by introducing lignocellulosic biomass and biochar addition. Nitrogen transformation mechanism was investigated through quantitative analysis of N-species in the pyrolysis products. Results showed that co-pyrolysis of algae and lignocellulosic biomass greatly increased nitrogen in solid char with large amount of NH3 and HCN releasing (~20 wt.%), while nitrogen in bio-oil decreased largely. With biochar addition, NH3, HCN, and N-containing intermediates (amines/amides and nitriles) reacted with higher active O-species (O-C=O, -OH, and –COOH) in biochar addition, and formed large amounts of amine/amide-N, pyridinic-N, pyrrolic-N, and quaternary-N on the surface of biochar addition, which led to most nitrogen being enriched in char product and biochar addition (over 75 wt.%) at the expense of amines/amides, nitriles, and N-containing gas (only 3 wt.% NH3 and HCN emission; decrease of 85%). These results demonstrated that biochar addition showed a positive influence on fixation of N-species during thermochemical conversion of algae and could convert nitrogen to valuable N-doped biochar materials.
https://doi.org/10.1021/acs.est.8b02485
