文献类型：期刊文献

英文题名：Sustainable valorization of salt-tolerant rice straw through microwave fluidized-bed pyrolysis: Product pathways and nitrogen migration

作者：Xu, Qing[1,2];Zhang, Zongliang[1];Xian, Shengxian[1,2];Wu, Yujian[1,2];Li, Haowei[1,2];Chen, Yanxu[1];Chen, Baokang[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：2026

卷号：243

外文期刊名：INDUSTRIAL CROPS AND PRODUCTS

收录：SCI-EXPANDED(收录号：WOS:001729387400001)、、EI(收录号：20261420421068)、WOS

基金：This work was supported by the National Natural Science Foundation of China (No.52476190) , the National Natural Science Foundation of China (No.52376171) , Joint Training Demonstration Base Project for Graduate Students of "Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences" in Guangdong Province, Guangdong Basic and Applied Basic Research Foundation (2023A1515110541) , Guangdong Basic and Applied Basic Research Foundation (2025A1515010722) , Guangdong Basic and Applied Basic Research Foundation (2024A1515010637) , Zhanjiang Marine Youth Talent Innovation Project (Grant No. 2024R3002) .

语种：英文

外文关键词：Salt-tolerant rice; Microwave fluidized-bed pyrolysis; Secondary reactions; Bulk density; Nitrogen migration

外文摘要：The large-scale cultivation of salt-tolerant rice supports food security, and its straw offers potential for resource utilization, but studies on energy applications, particularly in microwave-assisted fluidized bed pyrolysis (MFBP), are still limited. This work compared salt-tolerant and conventional rice straw, examined fluidization effects on product distribution, and explored co-pyrolysis with peanut shell and Ascophyllum nodosum, while analyzing nitrogen migration during pyrolysis. Results indicate that salt-tolerant rice contains higher alkali metals and lipids, producing bio-oil dominated by acids and esters. The high thermal stability of solid-phase nitrogen in salttolerant rice inhibits the release of nitrogen. Bulk density and fluidization strongly influenced product distribution and secondary tar cracking, while fluidization not only shortened the reaction time but also promoted the release of nitrogen-containing gases. As pyrolysis proceeded, unstable nitrogen species were transformed into stable heterocycles such as pyridine and pyrrole. During co-pyrolysis, the addition of peanut shells inhibited the decomposition reaction of biomass and the generation of bio-gas, but increased the bio-oil yield by up to approximately 10%. In contrast, the introduction of Ascophyllum nodosum promoted the decomposition reaction of biomass and maximally increased the hydrogen yield by about 4.5 mmol/g. Gas-phase secondary combination reactions of free radicals promoted macromolecular formation in bio-oil while suppressing gas release, whereas aldehydes and acids reacted with NH3, reducing nitrogen transfer to the gas phase. This study provides a basis for energy utilization of salt-tolerant rice straw.