文献类型：期刊文献

英文题名：Sulfur release behavior and sulfur fixation mechanism during biomass microwave co-pyrolysis of Ascophyllum and rice straw

作者：Xu, Qing[1,2];Chen, Zijian[1];Xian, Shengxian[1,2];Wu, Yujian[1,2];Li, Ming[1]

机构：[1]Guangdong Ocean Univ, Coll Ocean Engn & Energy, Zhanjiang 524088, Peoples R China;[2]Guangdong Ocean Univ, Guangdong Prov Key Lab Intelligent Equipment South, Zhanjiang 524088, Peoples R China

年份：2024

卷号：407

外文期刊名：BIORESOURCE TECHNOLOGY

收录：SCI-EXPANDED(收录号：WOS:001267961900001)、、EI(收录号：20240174988)、Scopus(收录号：2-s2.0-85198264080)、WOS

基金：This work was supported by the National Natural Science Founda- tion of China (No.52376171) , Guangdong Basic and Applied Basic Research Foundation (2023A1515110541) , the Program for Scientific Research Start-up Funds of Guangdong Ocean University (060302062107) and the Zhanjiang Marine Youth Talent Innovation Project (2023E0011) .

语种：英文

外文关键词：Microwave; Fluidized -bed co -pyrolysis; Biomass; Sulfur fixation; Active functional groups

外文摘要：Co-pyrolysis with low-sulfur biomass is expected to improve the yield and quality of bio-fuels, without the usage of calcium-based desulfurizer. Sulfur transformation during microwave fluidized-bed co-pyrolysis between terrestrial and marine biomass ( Ascophyllum , AS; Rice straw, RS) was investigated. Sulfur release was promoted during biomass co-pyrolysis, but it was inhibited during pyrolysis between AS and low-sulfur char. Thermal cracking of biomass was promoted during co-pyrolysis between biomass, accelerating the combination of H atoms and-SH radicals. Introduction of low-sulfur bio-char (CA) inhibited the generation of bio-char and the release of sulfur. Released sulfur was captured by -OH/C = C functional groups on bio-char through dehydration reactions/addition reactions, forming mercaptan in bio-char. Furthermore, introduction of microwave and biochar promoted the cyclization and aromatization reaction, converting mercaptan to thiophene and improving the thermal stability of solid sulfur, and thus increasing in-situ sulfur fixation rate.