[1]严青,仲兆平,张茜芸.采用酸-超声波强化碱预处理稻秆和玉米芯[J].东南大学学报(自然科学版),2013,43(1):105-109.[doi:10.3969/j.issn.1001-0505.2013.01.020]
 Yan Qing,Zhong Zhaoping,Zhang Xiyun.Acid-ultrasound strengthened alkali pretreatment of rice straw and corncob[J].Journal of Southeast University (Natural Science Edition),2013,43(1):105-109.[doi:10.3969/j.issn.1001-0505.2013.01.020]
点击复制

采用酸-超声波强化碱预处理稻秆和玉米芯()
分享到:

《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
43
期数:
2013年第1期
页码:
105-109
栏目:
环境科学与工程
出版日期:
2013-01-20

文章信息/Info

Title:
Acid-ultrasound strengthened alkali pretreatment of rice straw and corncob
作者:
严青仲兆平张茜芸
东南大学能源热转换及其过程测控教育部重点实验室, 南京210096
Author(s):
Yan Qing Zhong Zhaoping Zhang Xiyun
Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, Southeast University, Nanjing 210096, China
关键词:
预处理 酸-碱耦合 超声波 稻秆 玉米芯
Keywords:
pretreatment acid-alkali combination ultrasound rice straw corncob
分类号:
X705
DOI:
10.3969/j.issn.1001-0505.2013.01.020
摘要:
通过对原料成分和糖化率的测定,分析了不同预处理方法对稻秆和玉米芯的预处理效果,同时探讨了超声波对生物质结构的强化机制.分别采用XRD衍射和DNS比色法测定超声波强化预处理后的稻秆和玉米芯结晶度变化以及预处理液中的还原糖得率,并进一步分析了超声波对不同成分原料的作用效果.结果表明:在酸-碱耦合的基础上进行超声波强化能在较短的作用时间内使稻秆中半纤维素的质量分数降低20.61%,而使玉米芯中木质素的质量分数降低45.98%.此外,超声波强化预处理后的稻秆和玉米芯的糖化率分别提高了20.18%和9.47%,同时其结构中的(002)晶面衍射峰均有不同程度的增强.这表明对不同成分的原料,超声波均能有针对性地降低木质素或半纤维素的质量分数,而木质素含量对原料结晶结构有着直接的影响.
Abstract:
Performance of different pretreatment of rice straw and corncob were compared and the strengthening mechanism of ultrasound was investigated through raw material component analysis and saccharification rate analysis. The effect of ultrasound on crystalline structure of rice straw and corncob was studied by XRD(X-ray diffraction)and DNS(3,5-dinitrosalicylic acid)colorimetry was used for the filtrate after ultrasound pretreatment for the saccharification rate. The results show that the mass percentage of hemicellulose in rice straw is decreased by 20.61% and that of lignin in corncob is reduced by 45.98% after ultrasound radiation for a shorter pretreatment time on the basis of acid and alkali combination. Furthermore, the saccharification rate of rice straw and corncob are enhanced by 20.18% and 9.47%,respectively. Meanwhile, an increase in the peak intensity of(002)plane for both materials are clearly observed after ultrasound pretreatment. It demonstrates that for different raw material the ultrasound is beneficial to the reduction of mass percentag of lignin or hemicellulose, and the former directly affects the crysalline structure.

参考文献/References:

[1] Ragauskas Arthur J, Williams Charlotte K, Davison Brian H,et al. The path forward for biofuels and biomaterials [J]. Science, 2006, 311(5760):484-489.
[2] Velmurugan Rajendran, Muthukumar Karuppan. Sono-assisted enzymatic saccharification of sugarcane bagasse for bioethanol production[J]. Biochemical Engineering Journal, 2012, 63:1-9.
[3] Ryan Lisa, Convery Frank, Ferreira Susana. Stimulating the use of biofuels in the European Union: implications for climate change policy[J]. Energy Policy, 2006, 34(17):3184-3194.
[4] 姚秀清,张全. 植物纤维原料发酵生产燃料乙醇研究进展[J].可再生能源,2011,29(2):59-64.
  Yao Xiuqing,Zhang Quan. Status of fuel ethanol production by fermentation of vegetable cellulosic material[J]. Renewable Energy Resources, 2011, 29(2): 59-64.(in Chinese)
[5] Parameswaran Binod,Raveendran Sindhu, Reeta Rani Singhania,et al. Bioethanol production from rice straw: an overview[J]. Bioresource Technology, 2010, 101(13):4767-4774.
[6] Li Mingfei, Fan Yongming, Xu Feng,et al. Cold sodium hydroxide/urea based pretreatment of bamboo for bioethanol production: characterization of the cellulose rich fraction[J]. Industrial Crops and Products, 2010, 32(3):551-559.
[7] 朱振兴,聂俊华,颜涌捷.木质纤维素生物质制取燃料乙醇的化学预处理技术[J].化学与生物工程,2009,26(9):11-14.
  Zhu Zhenxing,Nie Junhua,Yan Yongjie.Chemical pretreatment technology of lignocellulose biomass for fuel ethanol[J]. Chemistry & Bioengineering, 2009, 26(9):11-14.(in Chinese)
[8] 唐锘. 秸秆预处理方法的筛选[J]. 化工时刊,2008,22(7):22-26.
  Tang Nuo. Selection of straw pre-treatment methods[J]. Chemical Industry Times, 2008, 22(7):22-26.(in Chinese)
[9] 晏飞来.基于玉米秸秆乙醇化的氨化预处理与酶解工艺研究[D]. 重庆:西南大学环境工程学院,2010.
[10] 王倩.纤维素酶高产菌株选育与玉米秸秆生产酒精工艺研究[D].保定:河北农业大学农产品加工及贮藏工程学院,2003.
[11] 梁江华.超声波辅助生物催化降解木质纤维素制燃料乙醇的研究[D].天津:天津大学化工学院,2007.
[12] Sasmal Soumya, Goud Vaibhav V, Mohanty Kaustubha. Ultrasound assisted lime pretreatment of lignocellulosic biomass toward bioethanol production[J]. Energy & Fuels, 2012, 26(6):3777-3784.
[13] Chen Wei-Hsin, Ye Song-Ching, Sheen Herng-Kuang. Hydrolysis characteristics of sugarcane bagasse pretreated by dilute acid solution in a microwave irradiation environment[J]. Applied Energy, 2012, 93:237-244.
[14] 李贤军,刘元,高建民,等.高温热处理木材的FTIR和XRD分析[J].北京林业大学学报,2009,31(增刊1):104-107.
  Li Xianjun, Liu Yuan,Gao Jianmin,et al. FTIR and XRD for wood with high-temperature heating treatment[J]. Journal of Beijing Forestry University, 2009, 31(Supp1):104-107.(in Chinese)

备注/Memo

备注/Memo:
作者简介: 严青(1988—),女,硕士生;仲兆平(联系人),男,博士,教授,博士生导师,zzhong@seu.edu.cn.
基金项目: 国家重点基础研究发展计划(973计划)资助项目(2011CB201505).
引文格式: 严青,仲兆平,张茜芸.采用酸-超声波强化碱预处理稻秆和玉米芯的研究[J].东南大学学报:自然科学版,2013,43(1):105-109. [doi:10.3969/j.issn.1001-0505.2013.01.020]
更新日期/Last Update: 2013-01-20