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| Direct Preparation of Lignin Nanoparticles from Ethanol Refining Waste Liquor of Corn Straw and Bambusa Pervariabilis |
| Received:March 21, 2024 Revised:July 04, 2024 |
| DOI：10.11981/j.issn.1000-6842.2025.01.74 |
| Key Words:lignin nanoparticles;ethanol refining waste liquid;surfactants;ultrasonication |
| Fund Project:兴辽英才计划特聘教授项目（XLYC1802025）。 |
| Author Name | Affiliation | Postcode | | MEI Zan | Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery， Dalian Polytechnic University， Dalian， Liaoning Province， 116034 | 116034 | | WANG Bing | Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery， Dalian Polytechnic University， Dalian， Liaoning Province， 116034 | 116034 | | PING Qingwei* | Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery， Dalian Polytechnic University， Dalian， Liaoning Province， 116034 | 116034 | | ZHANG Jian | Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery， Dalian Polytechnic University， Dalian， Liaoning Province， 116034 | 116034 | | SHENG Xueru | Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery， Dalian Polytechnic University， Dalian， Liaoning Province， 116034 | 116034 | | LI Na | Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery， Dalian Polytechnic University， Dalian， Liaoning Province， 116034 | 116034 |
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| Abstract: |
| This study utilized ethanol refining waste liquor of corn straw and Bambusa pervariabilis to directly prepare lignin nanoparticles （LNPs） with good stability and uniform size with ultrasonic-assisted. By adjusting the pH value， adding surfactant dosage， and ultrasonic time， the process parameters were optimized adopting the response surface method. The results showed that the ultrasonic time primarily affected the micro-morphology and distribution uniformity of LNPs. Using cetyltrimethylammonium bromide （CTAB） as a surfactant， under optimized process conditions， LNPs directly prepared from corn straw ethanol refining wastewater had a particle size of 257.1 nm， while that prepared from Bambusa pervariabilis ethanol refining wastewater was 183.0 nm. Similarly， using sodium dodecyl sulfate （SDS） as a surfactant， under optimal process conditions， the LNPs directly prepared from Bambusa pervariabilis ethanol refining wastewater had a particle size of 195.2 nm and showed better dispersion stability in water with retention rate of >60% after allowing the LNPs dispersion to stand for 7 days. The LNPs obtained by various methods all exhibited good thermal stability at <200 ℃. |
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