Research Article

Simultaneous wet ball milling and mild acid hydrolysis of rice hull

  1. Jinxiang Zhou1,
  2. Ding Chen1,*,
  3. Yonghua Zhu2,*,
  4. Hongdong Liao2,
  5. Li Yuan2,
  6. Zhenhua Chen1,
  7. Xuanming Liu2

Article first published online: 1 OCT 2009

DOI: 10.1002/jctb.2270

Issue

Journal of Chemical Technology and Biotechnology

Journal of Chemical Technology and Biotechnology

Volume 85, Issue 1, pages 85–90, January 2010

Additional Information

How to Cite

Zhou, J., Chen, D., Zhu, Y., Liao, H., Yuan, L., Chen, Z. and Liu, X. (2010), Simultaneous wet ball milling and mild acid hydrolysis of rice hull. J. Chem. Technol. Biotechnol., 85: 85–90. doi: 10.1002/jctb.2270

Author Information

  1. 1

    College of Materials Science and Engineering, Hunan University, Changsha, 410082, PR China

  2. 2

    Institute of Life Science and Biotechnology, Hunan University, Changsha, 410082, PR China

*College of Materials Science and Engineering, Hunan University, Changsha, 410082, PR China.

Publication History

  1. Issue published online: 1 DEC 2009
  2. Article first published online: 1 OCT 2009
  3. Manuscript Accepted: 15 AUG 2009
  4. Manuscript Revised: 3 AUG 2009
  5. Manuscript Received: 15 JUN 2009

Funded by

  • National Natural Science Foundation of China. Grant Number: 50Y574 039
  • Doctorate Fund of the Education Ministry of China. Grant Number: 20 070 532 016
  • State Education Ministry. Grant Number: 757 228 002
  • Planned Science and Technology Project of Hunan Province, China. Grant Number: 2008FJ3120

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Keywords:

  • rice hull;
  • ball milling;
  • citrate solvent;
  • structure analysis;
  • hydrolysis

Abstract

BACKGROUND: Rice hull, an abundant residue but a big issue for the rice processing industry, has the potential to serve as a feedstock for production of ethanol because of its lignocellulosic composition. Simultaneous wet ball milling and mild acid hydrolysis of rice hull was studied in this work.

RESULTS: Ball milling with 150 small stainless steel beads and rotation speed of 600 rpm in citrate solvent of pH 4 was the optimal condition for hydrolysis, and the yield of sugar increased with increased milling time. Corresponding structure transformations before and after milling analyzed by X-ray diffraction (XRD), environmental scanning electron microscopy (ESEM) and transmission fourier transform infrared spectroscopy (FT-IR) clearly indicate that this hydrolysis could be attributed to the crystalline and chemical structure changes of cellulose in rice hull during ball milling in mild acid solvent.

CONCLUSION: This combined treatment of ball milling and citrate solvent greatly changed the crystalline and chemical structure and continuously generated sites accessible to citrate solvent, thus enabling hydrolysis of the rice hull. Copyright © 2009 Society of Chemical Industry

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