분야
hwp1. Introduction
2. PHB Synthesis Process
2. 1. Fermentation
2. 2. Extraction
2. 3. Compounding
2. 4. Effect of Solvent
3. Solution
3. 1. Digestion Method
3. 2. Combinational Design of Digestion Method
4. The run of the market of PHB
4. 1. Market size
4. 2. Use
5. Conclusion
After the fermentation, the microorganisms(Alcaligenes latus) are filled with PHB in their body. These PHBs have to be separated from microorganisms to make final product. To separate PHBs from biomass, they are extracted from biomass by using solvent. These PHB extracted solvent will experience washing and drying process. After that, PHB can be precipitated as white powder. Most commonly used solvent is Chloroform. After end of this extraction process, the solvent should be separated from water or other impurities and recycled to extraction system because most of solvent is expensive.
2. 3. Compounding
PHB obtained in the extraction process as shape of powder. This powder is transformed into pellets in an extruder to make final product. At the same time, nucleating agents and plasticizers are added to improve processability or mechanical properties.
Figure . Extraction & Compounding Step
- web site : http://biomer.de
2. Effect of Solvent
- 송지용 외 6명, “Development of production process and manufacturing technology for commercialization of PHA”(2002), 178-179p
- 한국 과학기술 연구원 생명공학 연구소, 박영훈 외 5명, “A study on the development of the biodegradable polymer”(1995), 65-69p
3. Solution
- Chi-Wei Lo, Ho-Shing Wu, Yu-Hong Wei, "High throughput study of separation of poly(3-hydroxybutyrate) recombinant Escherichia coli XL1 blue"
4. Run of the market
- 생분해 플라스틱 전문기업 (주) NPI
web site : http://www.npi.co.kr/kor/sub3_2.php?mnu=03_02
