第11 卷 第6 期 Vol.11 No.6 2018 年 3 月 March 2018 冷等离子技术对稻草秸秆预处理的研究 陈莉晶 1 ,董阜豪 1 ,王 磊 1 ,刘美祺 1 ,HIBA Shaghaleh 1 , 郭佳雯 1 ,徐 徐 1,2* (1. 南京林业大学化学工程学院,南京 210037; 2. 江苏省生物质绿色燃料与化学品重点实验室,南京 210037) 摘要:以稻草秸秆为原料,在空气氛围中,采用冷等离子体技术对秸秆粉末进行处理,考察在不同处理条件下 稻草秸秆组分含量(质量分数)的变化,并采用 van Soest 差重法测定处理后稻草秸秆纤维素、半纤维素、木 质素等成分的含量。利用傅里叶变换红外光谱(Fourier transform infrared spectroscopy, FTIR)、 X 射线衍射(X-ray diffraction,XRD)和 X 射线光电子光谱(X-ray photoelectron spectroscopy,XPS)分别表征预处理前后的秸 秆性质。研究发现,利用冷等离子技术预处理后,稻草秸秆中半纤维素的含量下降,纤维素的含量上升,木 质素的含量先上升后下降。稻草秸秆内部结构遭到一定程度的破坏,木质素、纤维素之间的连接变得松散。 关键词:有机高分子材料;冷等离子体;稻草秸秆;预处理;木质纤维素 中图分类号:TQ223.122 文献标识码:A 文章编号:1674-2850(2018)06-0555-07 Study on the pre-treatment of straw with cold plasma technology CHEN Lijing 1 , DONG Fuhao 1 , WANG Lei 1 , LIU Meiqi 1 , HIBA Shaghaleh 1 , GUO Jiawen 1 , XU Xu 1, 2 (1. College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China; 2. Jiangsu Key Lab of Biobass-based Green Fuels and Chemicals, Nanjing 210037, China) Abstract: In this paper, the straw stalk was used as raw material, and its powder was pre-treated by cold plasma under the air atmosphere. The effects of different pre-treatment conditions on the components of straw stalk were investigated. The content changes of cellulose, hemicellulose and lignin in straw stalk were determined by van Soest method. The straw stalk were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) before and after pre-treatment by cold plasma, respectively. The results showed that after pre-treatment by cold plasma, the hemicellulose content of straw decreased, the cellulose content increased, and lignin content increased first and then decreased. It may be due to the structure of straw suffered a certain degree of damage after pre-treatment. The connection between lignin and cellulose became loose. Key words: organic macromolecule materials; cold plasma; straw stalk; pre-treatment; lignocellulose 0 引言 作为农业大国,我国是世界上秸秆资源最为丰富的国家之一,每年产生的农作物秸秆约 8 亿 t [1] . 近 年来,秸秆资源任意焚烧和随意丢弃的现象十分严重,这不仅是一种资源浪费,同时也恶化了生态环境。 因此,提高秸秆的转化利用是亟需解决的难题 [2] 。合理利用这些秸秆资源,既可节约大量的木材资源, 基金项目:江苏省自然科学基金(BK20140973) 作者简介:陈莉晶(1991—),女,硕士研究生,主要研究方向:天然产物的化学利用 通信联系人:徐徐,副教授,主要研究方向:天然产物的化学利用. E-mail: [email protected]
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Study on the pre-treatment of straw with cold plasma technology
CHEN Lijing1, DONG Fuhao1, WANG Lei1, LIU Meiqi1, HIBA Shaghaleh1, GUO Jiawen1, XU Xu1, 2
(1. College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China; 2. Jiangsu Key Lab of Biobass-based Green Fuels and Chemicals, Nanjing 210037, China)
Abstract: In this paper, the straw stalk was used as raw material, and its powder was pre-treated by cold plasma under the air atmosphere. The effects of different pre-treatment conditions on the components of straw stalk were investigated. The content changes of cellulose, hemicellulose and lignin in straw stalk were determined by van Soest method. The straw stalk were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) before and after pre-treatment by cold plasma, respectively. The results showed that after pre-treatment by cold plasma, the hemicellulose content of straw decreased, the cellulose content increased, and lignin content increased first and then decreased. It may be due to the structure of straw suffered a certain degree of damage after pre-treatment. The connection between lignin and cellulose became loose. Key words: organic macromolecule materials; cold plasma; straw stalk; pre-treatment; lignocellulose